Abstract:
Compounds are disclosed for the production of chemiluminescent light, particularly for the production of blue/violet light within the range of about 390 nm to less than 438 nm, and most particularly to the use of compounds composed of symmetrically and asymmetrically substituted anthracenes which are effective for increasing the production of such blue/violet light when used as fluorescers in conjunction with chemiluminescent systems. These systems utilize derivatives of 9,10-diphenylanthracene containing one or more fluorines As shown in General Formulae 1-3. The variables shown in Formulae 1-3 are defined in the specification.

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     The present application claims priority to, and the benefit of U.S. Provisional Application No. 61/220,072, filed on Jun. 24, 2009, the contents of which is incorporated by reference herein in its entirety. 
    
    
     FIELD OF THE INVENTION 
     This invention relates to the production of chemiluminescent light, particularly to the production of blue/violet light within the range of about 390 nm to less than 438 nm, and most particularly to the use of compounds composed of symmetrically and asymmetrically substituted anthracenes which are effective for increasing the production of such blue/violet light when used as fluorescers in conjunction with chemiluminescent systems. 
     BACKGROUND OF THE INVENTION 
     The principle techniques for the production of chemiluminescent light comprising the reaction of an oxalate solution including a dye with a solution of hydrogen peroxide containing a suitable catalyst have been well described in the following U.S. Pat. Nos. 6,740,263; 5,232,635; 4,717,511; 4,678,608; 3,888,786; 3,775,336; 3,749,679; 3,597,362; 3,557,233; 3,391,068; 3,391,069, which are incorporated herein by reference. 
     Chemiluminescence is produced by a reaction, in the liquid phase, of an activator such as hydrogen peroxide with a fluorescent agent and an oxalate. Optionally, other secondary compounds can be present such as catalysts, dyes etc. The production of chemiluminescent light by the reaction of a catalyzed hydrogen peroxide solution with a fluorescer solution is well known in the art. Blue, green and yellow chemiluminescent light has been produced depending upon the particular fluorescer employed in the fluorescer solution. Examples of these prior art chemiluminescent light-systems can be found in one or more of the following U.S. Pat. Nos. 3,749,679; 3,391,068; 3,974,368; 3,557,233; 3,597,362; 3,775,336; 3,888,786. 
     Historically, the light output of blue chemiluminescent devices has been based upon 9,10-diphenylanthracene (DPHA) and 2-chloro-9,10-bis(4-methoxyphenyl)anthracene (BPEN). However, although the light output is measured from 400-500 nm, most of the substituted 9,10-diphenylanthracene derivatives have chemiluminescent emission maxima greater than 445 nm. The most common blue used in chemiluminescent devices is BPEN with an emission maximum of 451 nm. None of the reported non-polymeric substituted diphenylanthracene dyes used for chemiluminescence has a listed emission maximum below DPHA (438 nm). This invention teaches the development of dyes suitable for oxalate/peroxide chemiluminescent systems with a spectrum having an emission maximum at a wavelength below the one observed for DPHA, but at wavelengths greater than the ultra-violet region. This would enable the production of a chemiluminescent system with greater output in the violet region of the visible spectrum, particularly, a chemiluminescent system which produces light having an emission maximum from about 390 nm to less than 438 nm without the need for filters to protect the observer from ultraviolet radiation. 
     DESCRIPTION OF THE PRIOR ART 
     U.S. Pat. No. 3,888,786 to Maulding relates to a chemiluminescent system to obtain chemiluminescent light by reacting an oxalic-type compound of the group consisting of an oxalic-type ester with a hydroperoxide compound in the presence of a solvent and chloro, fluoro, or lower alkyl bis(phenylethynyl)-substituted aromatic compound as a fluorescer. Similarly, U.S. Pat. Nos. 3,729,426, 3,948,797, 4,017,415 and 5,122,306 teach the use of substituted anthracene derivatives such as 9,10-bis(phenylethynyl)anthracene, 9,10-bis(4-methoxyphenyl)-2-chloroanthracene, monochloro-substituted 9,10-bis(phenylethynyl)anthracenes such as 1-chloro-9,10-bis(phenylethynyl)anthracene, dichloro-substituted 9,10-bis(phenylethynyl)anthracenes such as 1,8-dichloro-9,10-bis(phenylethynyl)anthracene, 1,5-dichloro-9,10-bis(phenylethynyl)anthracene, 2,3-dichloro-9,10-bis(phenylethynyl)anthracene, 9,10-diphenylanthracene and the like, as suitable fluorescers for chemiluminescent systems. U.S. Pat. No. 3,970,660 to Bollyky is directed toward a chemiluminescent system comprising (1) derivatives of a polycarbonyl compound substituted with at least one nitrogen-containing hetero group and which may have an alkanol or amine substituent, (2) a hydroperoxide compound, (3) a diluent, and (4) a fluorescer, inclusive of halogen substituted anthracenes, said ingredients in combination producing visible chemiluminescent light and a process of producing such light. U.S. Pat. No. 4,076,645 to Vega teaches compositions and methods for producing chemiluminescence by the reaction of bis(6-carbopentoxy-2,4,5-trichlorophenyl)oxalate with a peroxide in presence of 9,10-bis(phenylethynyl)anthracene the initial luminosity on mixing these reaction components in a suitable diluent is increased by using the specific concentration of bis-oxalate ester component in the range from 0.05 to 0.09 mole per liter in the reaction mixture. 
     U.S. Pat. No. 4,859,369 to Baretz et al, teaches aqueous chemiluminescent systems, inclusive of halogen substituted anthracene fluorescers including those emitting in the blue region of the spectrum chemiluminescent systems, which have been found to exhibit improved chemiluminescence due to the presence of minor amounts of a water-soluble polymer. 
     U.S. Pat. No. 5,232,635 to Van Moer et al is directed toward new derivatives of anthracene for the emission of a blue chemiluminescent light. The derivatives are of 9,10-bisphenylanthracene substituted at the 2 position of the anthracene ring and on the phenyl groups including 9,10-bis(4-fluorophenyl)-2-fluoroanthracene. The production of turquoise chemiluminescent light is also disclosed by mixing said derivatives with a green 9,10-bis(phenylethynyl) anthracene. 
     U.S. Pat. No. 6,740,263 to Park et al describes an anthracene and chemiluminescent compositions as shown below. Wherein, R is an alkyl group having 1-8 carbon atoms, and X 1  and X 2  are independently hydrogen or a halogen. 
     
       
                 
         
             
             
         
      
     
     The disclosure of Park et al relates to an anthracene compound and a chemiluminescent composition comprising the compound, and more particularly to a novel anthracene compound, which is capable of emitting a blue light of a high intensity for a prolonged period of time compared with conventional anthracene compounds used as luminescent dyes in chemiluminescent compositions emitting blue light, and a chemiluminescent composition comprising the anthracene compound. 
     The above referenced prior art disclosures fail to teach or suggest the novel compounds as instantly disclosed, nor do they teach a chemiluminescent system which produces light having an emission maximum from about 390 nm to less than 438 nm. 
     SUMMARY OF THE INVENTION 
     It is a primary objective of the instant invention to teach new species of fluoro-substituted 9,10-diphenylanthracenes including symmetrically and/or asymmetrically substituted constituents. 
     It is a further objective of the instant invention to provide fluorescer compounds based upon symmetrical and asymmetrical 9,10-diphenylanthracene derivatives of Formula (1), where the substituents on the anthracene labeled A 1 , A 2 , A 3 , A 4 , A 5 , A 6 , A 7 , and A 8  are either fluorine or hydrogen. 
                                
Furthermore, if Ar 1  and Ar 2  are the same, at least two of the substituents, B 1 , B 2 , B 3 , B 4 , and B 5 , as shown in  FIG. 2 , are not hydrogen, wherein B 1 , B 2 , B 4 , and B 5  are either hydrogen or fluorine and B 3  is either hydrogen, fluorine, trifluoromethyl, or an alkoxy group with 1-10 carbons.
 
                                
Additionally, if Ar 1  and Ar 2  are not the same, Ar 1  will meet the conditions described above and the second ring, as shown in  FIG. 3 , may be completely substituted with hydrogen or wherein at least one of the substituents, C 1 , C 2 , C 3 , C 4 , and C 5  which are not hydrogen, wherein C 1 , C 2 , C 4 , and C 5  are either hydrogen or fluorine and C 3  is either hydrogen, fluorine, trifluoromethyl, or an alkoxy group with 1-10 carbons.
 
     
       
                 
         
             
             
         
      
     
     It is a further objective of the instant invention to provide a chemiluminescent composition comprised of a solution of the fluorescer and oxalate, which when mixed with a solution of hydrogen peroxide in an appropriate solvent provides a chemiluminescent system exhibiting improved light output in the spectral region of about 390 nm to less than 438 nm particularly, a chemiluminescent system which produces light having an emission maximum from about 390 nm to less than 438 nm, and more specifically a chemiluminescent system which produces light having an emission maximum in the region from about 400 nm to about 420 nm. 
     In accordance with the present invention, the oxalate compound is a bis(phenyl) oxalate ester having the formula: 
     
       
                 
         
             
             
         
      
         
         
           
             in which the phenyl groups(P) are substituted by at least one carbalkoxy group of the formula 
           
         
       
    
     
       
                 
         
             
             
         
      
         
         
           
             in which R is (a) an alkyl group (1-18 carbons, straight chain, branched chain, cyclic) or (b) a substituted alkyl group, where said substituents are selected from the group consisting of fluoro, chloro, trifluoromethyl, alkoxy, cyano, carbalkoxy, and phenyl; and in which (2) the phenyl groups P, are substituted by at least two additional substituents selected from the group consisting of fluoro, chloro, bromo, cyano, trifluoromethyl, carbalkoxy, nitro, alkoxy, alkoxy methyl, methyl, and higher alkyl, said additional substituents being selected so that the sum of their Hammett sigma constants for phenols lies between 1.0 and 2. 
           
         
       
    
     In a preferred embodiment the oxalate is bis(2,4,5-trichloro-6-carbopentoxyphenyl)oxalate. 
     Other objects and advantages of this invention will become apparent from the following description taken in conjunction with any accompanying drawings wherein are set forth, by way of illustration and example, certain embodiments of this invention. Any drawings contained herein constitute a part of this specification and include exemplary embodiments of the present invention and illustrate various objects and features thereof. 
    
    
     
       BRIEF DESCRIPTION OF THE FIGURES 
       As follows,  FIGS. 1-88  illustrate anthracene derivatives with the same or symmetrically substituted aryl rings in the 9 and 10 positions, and  FIGS. 89-660  illustrate anthracene derivatives with different or asymmetric aryl rings in the 9 and 10 positions. 
         FIG. 1  illustrates a 9,10-bis(2,3,4,5,6-pentafluorophenyl)anthracene; 
         FIG. 2  illustrates a 9,10-bis[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 3  illustrates a 9,10-bis(3,4,5-trifluorophenyl)anthracene 
         FIG. 4  illustrates a 9,10-bis(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 5  illustrates a 9,10-bis(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 6  illustrates a 9,10-bis(2,6-difluoro-4-methoxyphenyl)anthracene; 
         FIG. 7  illustrates a 9,10-bis(2,4-difluorophenyl)anthracene 
         FIG. 8  illustrates a 9,10-bis(3,4-difluorophenyl)anthracene; 
         FIG. 9  illustrates a 2-fluoro-9,10-bis(2,3,4,5,6-pentafluorophenyl)anthracene; 
         FIG. 10  illustrates a 2-fluoro-9,10-bis[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 11  illustrates a 2-fluoro-9,10-bis(3,4,5-trifluorophenyl)anthracene 
         FIG. 12  illustrates a 2-fluoro-9,10-bis(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 13  illustrates a 2-fluoro-9,10-bis(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 14  illustrates a 9,10-bis(2,6-difluoro-4-methoxyphenyl)-2-fluoroanthracene; 
         FIG. 15  illustrates a 9,10-bis(2,4-difluorophenyl)-2-fluoroanthracene; 
         FIG. 16  illustrates a 9,10-bis(3,4-difluorophenyl)-2-fluoroanthracene anthracene; 
         FIG. 17  illustrates a 1-fluoro-9,10-bis(2,3,4,5,6-pentafluorophenyl)anthracene; 
         FIG. 18  illustrates a 1-fluoro-9,10-bis[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 19  illustrates a 1-fluoro-9,10-bis(3,4,5-trifluorophenyl)anthracene 
         FIG. 20  illustrates a 1-fluoro-9,10-bis(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 21  illustrates a 1-fluoro-9,10-bis(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 22  illustrates a 9,10-bis(2,6-difluoro-4-methoxyphenyl)-1-fluoroanthracene; 
         FIG. 23  illustrates a 9,10-bis(2,4-difluorophenyl)1-fluoroanthracene; 
         FIG. 24  illustrates a 9,10-bis(3,4-difluorophenyl)1-fluoroanthracene; 
         FIG. 25  illustrates a 1,4-difluoro-9,10-bis(2,3,4,5,6-pentafluorophenyl)anthracene; 
         FIG. 26  illustrates a 1,4-difluoro-9,10-bis[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 27  illustrates a 1,4-difluoro-9,10-bis(3,4,5-trifluorophenyl)anthracene; 
         FIG. 28  illustrates a 1,4-difluoro-9,10-bis(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 29  illustrates a 1,4-difluoro-9,10-bis(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 30  illustrates a 9,10-bis(2,6-difluoro-4-methoxyphenyl)-1,4-difluoroanthracene; 
         FIG. 31  illustrates a 9,10-bis(2,4-difluorophenyl)-1,4-difluoroanthracene; 
         FIG. 32  illustrates a 9,10-bis(3,4-difluorophenyl)-1,4-difluoroanthracene; 
         FIG. 33  illustrates a 2,3-difluoro-9,10-bis(2,3,4,5,6-pentafluorophenyl)anthracene; 
         FIG. 34  illustrates a 2,3-difluoro-9,10-bis[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 35  illustrates a 2,3-difluoro-9,10-bis(3,4,5-trifluorophenyl)anthracene; 
         FIG. 36  illustrates a 2,3-difluoro-9,10-bis(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 37  illustrates a 2,3-difluoro-9,10-bis(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 38  illustrates a 9,10-bis(2,6-difluoro-4-methoxyphenyl)-2,3-difluoroanthracene; 
         FIG. 39  illustrates a 9,10-bis(2,4-difluorophenyl)-2,3-difluoroanthracene; 
         FIG. 40  illustrates a 9,10-bis(3,4-difluorophenyl)-2,3-difluoroanthracene; 
         FIG. 41  illustrates a 1,4,5-trifluoro-9,10-bis(2,3,4,5,6-pentafluorophenyl)anthracene; 
         FIG. 42  illustrates a 1,4,5-trifluoro-9,10-bis[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 43  illustrates a 1,4,5-trifluoro-9,10-bis(3,4,5-trifluorophenyl)anthracene; 
         FIG. 44  illustrates a 1,4,5-trifluoro-9,10-bis(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 45  illustrates a 1,4,5-trifluoro-9,10-bis(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 46  illustrates a 9,10-bis(2,6-difluoro-4-methoxyphenyl)-1,4,5-trifluoroanthracene; 
         FIG. 47  illustrates a 9,10-bis(2,4-difluorophenyl)-1,4,5-trifluoroanthracene; 
         FIG. 48  illustrates a 9,10-bis(3,4-difluorophenyl)-1,4,5-trifluoroanthracene; 
         FIG. 49  illustrates a 1,4,6-trifluoro-9,10-bis(2,3,4,5,6-pentafluorophenyl)anthracene; 
         FIG. 50  illustrates a 1,4,6-trifluoro-9,10-bis[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 51  illustrates a 1,4,6-trifluoro-9,10-bis(3,4,5-trifluorophenyl)anthracene; 
         FIG. 52  illustrates a 1,4,6-trifluoro-9,10-bis(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 53  illustrates a 1,4,6-trifluoro-9,10-bis(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 54  illustrates a 9,10-bis(2,6-difluoro-4-methoxyphenyl)-1,4,6-trifluoroanthracene; 
         FIG. 55  illustrates a 9,10-bis(2,4-difluorophenyl)-1,4,6-trifluoroanthracene; 
         FIG. 56  illustrates a 9,10-bis(3,4-difluorophenyl)-1,4,6-trifluoroanthracene; 
         FIG. 57  illustrates a 1,2,3,4-tetrafluoro-9,10-bis(2,3,4,5,6-pentafluorophenyl)anthracene; 
         FIG. 58  illustrates a 1,2,3,4-tetrafluoro-9,10-bis[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 59  illustrates a 1,2,3,4-tetrafluoro-9,10-bis(3,4,5-trifluorophenyl)anthracene 
         FIG. 60  illustrates a 1,2,3,4-tetrafluoro-9,10-bis(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 61  illustrates a 1,2,3,4-tetrafluoro-9,10-bis(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 62  illustrates a 9,10-bis(2,6-difluoro-4-methoxyphenyl)-1,2,3,4-tetrafluoroanthracene; 
         FIG. 63  illustrates a 9,10-bis(2,4-difluorophenyl)-1,2,3,4-tetrafluoroanthracene; 
         FIG. 64  illustrates a 9,10-bis(3,4-difluorophenyl)-1,2,3,4-tetrafluoroanthracene; 
         FIG. 65  illustrates a 1,2,3,4,5-pentafluoro-9,10-bis(2,3,4,5,6-pentafluorophenyl)anthracene; 
         FIG. 66  illustrates a 1,2,3,4,5-pentafluoro-9,10-bis[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 67  illustrates a 1,2,3,4,5-pentafluoro-9,10-bis(3,4,5-trifluorophenyl)anthracene 
         FIG. 68  illustrates a 1,2,3,4,5-pentafluoro-9,10-bis(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 69  illustrates a 1,2,3,4,5-pentafluoro-9,10-bis(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 70  illustrates a 9,10-bis(2,6-difluoro-4-methoxyphenyl)-1,2,3,4,5-pentafluoroanthracene; 
         FIG. 71  illustrates a 9,10-bis(2,4-difluorophenyl)-1,2,3,4,5-pentafluoroanthracene; 
         FIG. 72  illustrates a 9,10-bis(3,4-difluorophenyl)-1,2,3,4,5-pentafluoroanthracene; 
         FIG. 73  illustrates a 1,2,3,4,6-pentafluoro-9,10-bis(2,3,4,5,6-pentafluorophenyl)anthracene; 
         FIG. 74  illustrates a 1,2,3,4,6-pentafluoro-9,10-bis[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 75  illustrates a 1,2,3,4,6-pentafluoro-9,10-bis(3,4,5-trifluorophenyl)anthracene: 
         FIG. 76  illustrates a 1,2,3,4,6-pentafluoro-9,10-bis(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 77  illustrates a 1,2,3,4,6-pentafluoro-9,10-bis(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 78  illustrates a 9,10-bis(2,6-difluoro-4-methoxyphenyl)-1,2,3,4,6-pentafluoroanthracene; 
         FIG. 79  illustrates a 9,10-bis(2,4-difluorophenyl)-1,2,3,4,6-pentafluoroanthracene; 
         FIG. 80  illustrates a 9,10-bis(3,4-difluorophenyl)-1,2,3,4,6-pentafluoroanthracene; 
         FIG. 81  illustrates a 1,2,3,4,5,6,7,8-octafluoro-9,10-bis(2,3,4,5,6-pentafluorophenyl)anthracene; 
         FIG. 82  illustrates a 1,2,3,4,5,6,7,8-octafluoro-9,10-bis[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 83  illustrates a 1,2,3,4,5,6,7,8-octafluoro-9,10-bis(3,4,5-trifluorophenyl)anthracene 
         FIG. 84  illustrates a 1,2,3,4,5,6,7,8-octafluoro-9,10-bis(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 85  illustrates a 1,2,3,4,5,6,7,8-octafluoro-9,10-bis(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 86  illustrates a 9,10-bis(2,6-difluoro-4-methoxyphenyl)-1,2,3,4,5,6,7,8-octafluoroanthracene; 
         FIG. 87  illustrates a 9,10-bis(2,4-difluorophenyl)-1,2,3,4,5,6,7,8-octafluoroanthracene; 
         FIG. 88  illustrates a 9,10-bis(3,4-difluorophenyl)-1,2,3,4,5,6,7,8-octafluoroanthracene; 
         FIG. 89  illustrates a 9-(2,3,4,5,6-pentafluorophenyl)-10-phenylanthracene; 
         FIG. 90  illustrates a 9-(4-methoxyphenyl)-10-(2,3,4,5,6-pentafluorophenyl)anthracene; 
         FIG. 91  illustrates a 9-(2,3,4,5,6-pentafluorophenyl)-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 92  illustrates a 9-(2,3,4,5,6-pentafluorophenyl)-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 93  illustrates a 9-(2,3,4,5,6-pentafluorophenyl)-10-(3,4,5-trifluoro)anthracene; 
         FIG. 94  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-10-(2,3,4,5,6-pentafluorophenyl)anthracene 
         FIG. 95  illustrates a 9-(3,4-difluorophenyl)-10-(2,3,4,5,6-pentafluorophenyl)anthracene; 
         FIG. 96  illustrates a 9-(2,3,4,5,6-pentafluorophenyl)-10-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 97  illustrates a 9-(2,4-difluorophenyl)-10-(2,3,4,5,6-pentafluorophenyl)anthracene; 
         FIG. 98  illustrates a 9-phenyl-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 99  illustrates a 9-(4-methoxyphenyl)-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 100  illustrates a 9-(2,3,5,6-tetrafluorophenyl)-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 101  illustrates a 9-(2,3,5,6-tetrafluorophenyl)-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 102  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 103  illustrates a 9-(3,4-difluorophenyl)-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 104  illustrates a 9-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 105  illustrates a 9-(3,4-difluorophenyl)-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 106  illustrates a 9-phenyl-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 107  illustrates a 9-(4-methoxyphenyl)-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 108  illustrates a 9-(2,3,5,6-tetrafluoro-4-methoxyphenyl)-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 109  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 110  illustrates a 9-(3,4-difluorophenyl)-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 111  illustrates a 9-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 112  illustrates a 9-(2,4-difluorophenyl)-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 113  illustrates a 9-phenyl-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 114  illustrates a 9-(4-methoxyphenyl)-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 115  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 116  illustrates a 9-(3,4-difluorophenyl)-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 117  illustrates a 9-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 118  illustrates a 9-(2,4-difluorophenyl)-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 119  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-10-phenylanthracene: 
         FIG. 120  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-10-(4-methoxyphenyl)anthracene: 
         FIG. 121  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-10-(3,4-difluorophenyl)anthracene; 
         FIG. 122  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-10-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 123  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-10-(2,4-difluorophenyl)anthracene; 
         FIG. 124  illustrates a 9-(3,4-difluorophenyl)-10-phenylanthracene; 
         FIG. 125  illustrates a 9-(3,4-difluorophenyl)-10-(4-methoxyphenyl)anthracene; 
         FIG. 126  illustrates a 9-(3,4-difluorophenyl)-10-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 127  illustrates a 9-(2,4-difluorophenyl)-10-(3,4-difluorophenyl)anthracene, 
         FIG. 128  illustrates a 9-phenyl-10-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 129  illustrates a 9-(4-methoxyphenyl)-10-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 130  illustrates a 9-(2,4-difluorophenyl)-10-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 131  illustrates a 9-(2,4-difluorophenyl)-10-phenylanthracene; 
         FIG. 132  illustrates a 9-(2,4-difluorophenyl)-10-(4-methoxyphenyl)anthracene; 
         FIG. 133  illustrates a 1-fluoro-9-(2,3,4,5,6-pentafluorophenyl)-10-phenylanthracene; 
         FIG. 134  illustrates a 1-fluoro-9-(4-methoxyphenyl)-10-(2,3,4,5,6-pentafluorophenyl)anthracene; 
         FIG. 135  illustrates a 1-fluoro-9-(2,3,4,5,6-pentafluorophenyl)-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 136  illustrates a 1-fluoro-9-(2,3,4,5,6-pentafluorophenyl)-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 137  illustrates a 1-fluoro-9-(2,3,4,5,6-pentafluorophenyl)-10-(3,4,5-trifluoro)anthracene; 
         FIG. 138  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-1-fluoro-10-(2,3,4,5,6-pentafluorophenyl)anthracene 
         FIG. 139  illustrates a 9-(3,4-difluorophenyl)-1-fluoro-10-(2,3,4,5,6-pentafluorophenyl)anthracene; 
         FIG. 140  illustrates a 1-fluoro-9-(2,3,4,5,6-pentafluorophenyl)-10-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 141  illustrates a 9-(2,4-difluorophenyl)-1-fluoro-10-(2,3,4,5,6-pentafluorophenyl)anthracene; 
         FIG. 142  illustrates a 1-fluoro-9-phenyl-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 143  illustrates a 1-fluoro-9-(4-methoxyphenyl)-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 144  illustrates a 1-fluoro-9-(2,3,5,6-tetrafluorophenyl)-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 145  illustrates a 1-fluoro-9-(2,3,5,6-tetrafluorophenyl)-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 146  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-1-fluoro-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 147  illustrates a 9-(3,4-difluorophenyl)-1-fluoro-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 148  illustrates a 1-fluoro-9-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 149  illustrates a 9-(3,4-difluorophenyl)-1-fluoro-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 150  illustrates a 1-fluoro-9-phenyl-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 151  illustrates a 1-fluoro-9-(4-methoxyphenyl)-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 152  illustrates a 1-fluoro-9-(2,3,5,6-tetrafluoro-4-methoxyphenyl)-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 153  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-1-fluoro-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 154  illustrates a 9-(3,4-difluorophenyl)-1-fluoro-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 155  illustrates a 1-fluoro-9-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 156  illustrates a 9-(2,4-difluorophenyl)-1-fluoro-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 157  illustrates a 1-fluoro-9-phenyl-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 158  illustrates a 1-fluoro-9-(4-methoxyphenyl)-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 159  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-1-fluoro-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 160  illustrates a 9-(3,4-difluorophenyl)-1-fluoro-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 161  illustrates a 1-fluoro-9-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 162  illustrates a 9-(2,4-difluorophenyl)-1-fluoro-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 163  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-1-fluoro-10-phenylanthracene: 
         FIG. 164  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-1-fluoro-10-(4-methoxyphenyl)anthracene: 
         FIG. 165  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-10-(3,4-difluorophenyl)-1-fluoroanthracene; 
         FIG. 166  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-1-fluoro-10-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 167  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-1-fluoro-10-(2,4-difluorophenyl)anthracene; 
         FIG. 168  illustrates a 9-(3,4-difluorophenyl)-1-fluoro-10-phenylanthracene; 
         FIG. 169  illustrates a 9-(3,4-difluorophenyl)-1-fluoro-10-(4-methoxyphenyl)anthracene; 
         FIG. 170  illustrates a 9-(3,4-difluorophenyl)-1-fluoro-10-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 171  illustrates a 9-(2,4-difluorophenyl)-1-fluoro-10-(3,4-difluorophenyl)anthracene; 
         FIG. 172  illustrates a 1-fluoro-9-phenyl-10-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 173  illustrates a 1-fluoro-9-(4-methoxyphenyl)-10-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 174  illustrates a 9-(2,4-difluorophenyl)-1-fluoro-10-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 175  illustrates a 9-(2,4-difluorophenyl)-1-fluoro-10-phenylanthracene; 
         FIG. 176  illustrates a 9-(2,4-difluorophenyl)-1-fluoro-10-(4-methoxyphenyl)anthracene; 
         FIG. 177  illustrates a 2-fluoro-9-(2,3,4,5,6-pentafluorophenyl)-10-phenylanthracene; 
         FIG. 178  illustrates a 2-fluoro-9-(4-methoxyphenyl)-10-(2,3,4,5,6-pentafluorophenyl)anthracene; 
         FIG. 179  illustrates a 2-fluoro-9-(2,3,4,5,6-pentafluorophenyl)-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 180  illustrates a 2-fluoro-9-(2,3,4,5,6-pentafluorophenyl)-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 181  illustrates a 2-fluoro-9-(2,3,4,5,6-pentafluorophenyl)-10-(3,4,5-trifluoro)anthracene; 
         FIG. 182  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-2-fluoro-10-(2,3,4,5,6-pentafluorophenyl)anthracene 
         FIG. 183  illustrates a 9-(3,4-difluorophenyl)-2-fluoro-10-(2,3,4,5,6-pentafluorophenyl)anthracene; 
         FIG. 184  illustrates a 2-fluoro-9-(2,3,4,5,6-pentafluorophenyl)-10-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 185  illustrates a 9-(2,4-difluorophenyl)-2-fluoro-10-(2,3,4,5,6-pentafluorophenyl)anthracene; 
         FIG. 186  illustrates a 2-fluoro-9-phenyl-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 187  illustrates a 2-fluoro-9-(4-methoxyphenyl)-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 188  illustrates a 2-fluoro-9-(2,3,5,6-tetrafluorophenyl)-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 189  illustrates a 2-fluoro-9-(2,3,5,6-tetrafluorophenyl)-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 190  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-2-fluoro-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 191  illustrates a 9-(3,4-difluorophenyl)-2-fluoro-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 192  illustrates a 2-fluoro-9-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 193  illustrates a 9-(3,4-difluorophenyl)-2-fluoro-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 194  illustrates a 2-fluoro-9-phenyl-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 195  illustrates a 2-fluoro-9-(4-methoxyphenyl)-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 196  illustrates a 2-fluoro-9-(2,3,5,6-tetrafluoro-4-methoxyphenyl)-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 197  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-2-fluoro-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 198  illustrates a 9-(3,4-difluorophenyl)-2-fluoro-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 199  illustrates a 2-fluoro-9-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 200  illustrates a 9-(2,4-difluorophenyl)-2-fluoro-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 201  illustrates a 2-fluoro-9-phenyl-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 202  illustrates a 2-fluoro-9-(4-methoxyphenyl)-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 203  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-2-fluoro-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 204  illustrates a 9-(3,4-difluorophenyl)-2-fluoro-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 205  illustrates a 2-fluoro-9-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 206  illustrates a 9-(2,4-difluorophenyl)-2-fluoro-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 207  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-2-fluoro-10-phenylanthracene: 
         FIG. 208  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-2-fluoro-10-(4-methoxyphenyl)anthracene: 
         FIG. 209  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-10-(3,4-difluorophenyl)-2-fluoroanthracene; 
         FIG. 210  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-2-fluoro-10-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 211  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-2-fluoro-10-(2,4-difluorophenyl)anthracene; 
         FIG. 212  illustrates a 9-(3,4-difluorophenyl)-2-fluoro-10-phenylanthracene; 
         FIG. 213  illustrates a 9-(3,4-difluorophenyl)-2-fluoro-10-(4-methoxyphenyl)anthracene; 
         FIG. 214  illustrates a 9-(3,4-difluorophenyl)-2-fluoro-10-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 215  illustrates a 9-(2,4-difluorophenyl)-2-fluoro-10-(3,4-difluorophenyl)anthracene; 
         FIG. 216  illustrates a 2-fluoro-9-phenyl-10-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 217  illustrates a 2-fluoro-9-(4-methoxyphenyl)-10-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 218  illustrates a 9-(2,4-difluorophenyl)-2-fluoro-10-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 219  illustrates a 9-(2,4-difluorophenyl)-2-fluoro-10-phenylanthracene; 
         FIG. 220  illustrates a 9-(2,4-difluorophenyl)-2-fluoro-10-(4-methoxyphenyl)anthracene; 
         FIG. 221  illustrates a 1,4-difluoro-9-(2,3,4,5,6-pentafluorophenyl)-10-phenylanthracene; 
         FIG. 222  illustrates a 1,4-difluoro-9-(4-methoxyphenyl)-10-(2,3,4,5,6-pentafluorophenyl)anthracene; 
         FIG. 223  illustrates a 1,4-difluoro-9-(2,3,4,5,6-pentafluorophenyl)-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 224  illustrates a 1,4-difluoro-9-(2,3,4,5,6-pentafluorophenyl)-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 225  illustrates a 1,4-difluoro-9-(2,3,4,5,6-pentafluorophenyl)-10-(3,4,5-trifluoro)anthracene; 
         FIG. 226  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-1,4-difluoro-10-(2,3,4,5,6-pentafluorophenyl)anthracene 
         FIG. 227  illustrates a 9-(3,4-difluorophenyl)-1,4-difluoro-10-(2,3,4,5,6-pentafluorophenyl)anthracene; 
         FIG. 228  illustrates a 1,4-difluoro-9-(2,3,4,5,6-pentafluorophenyl)-10-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 229  illustrates a 9-(2,4-difluorophenyl)-1,4-difluoro-10-(2,3,4,5,6-pentafluorophenyl)anthracene; 
         FIG. 230  illustrates a 1,4-difluoro-9-phenyl-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 231  illustrates a 1,4-difluoro-9-(4-methoxyphenyl)-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 232  illustrates a 1,4-difluoro-9-(2,3,5,6-tetrafluorophenyl)-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 233  illustrates a 1,4-difluoro-9-(2,3,5,6-tetrafluorophenyl)-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 234  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-1,4-difluoro-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 235  illustrates a 9-(3,4-difluorophenyl)-1,4-difluoro-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 236  illustrates a 1,4-difluoro-9-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 237  illustrates a 9-(3,4-difluorophenyl)-1,4-difluoro-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 238  illustrates a 1,4-difluoro-9-phenyl-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 239  illustrates a 1,4-difluoro-9-(4-methoxyphenyl)-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 240  illustrates a 1,4-difluoro-9-(2,3,5,6-tetrafluoro-4-methoxyphenyl)-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 241  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-1,4-difluoro-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 242  illustrates a 9-(3,4-difluorophenyl)-1,4-difluoro-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 243  illustrates a 1,4-difluoro-9-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 244  illustrates a 9-(2,4-difluorophenyl)-1,4-difluoro-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 245  illustrates a 1,4-difluoro-9-phenyl-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 246  illustrates a 1,4-difluoro-9-(4-methoxyphenyl)-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 247  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-1,4-difluoro-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 248  illustrates a 9-(3,4-difluorophenyl)-1,4-difluoro-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 249  illustrates a 1,4-difluoro-9-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 250  illustrates a 9-(2,4-difluorophenyl)-1,4-difluoro-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 251  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-1,4-difluoro-10-phenylanthracene: 
         FIG. 252  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-1,4-difluoro-10-(4-methoxyphenyl)anthracene: 
         FIG. 253  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-10-(3,4-difluorophenyl)-1,4-difluoroanthracene; 
         FIG. 254  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-1,4-difluoro-10-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 255  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-1,4-difluoro-10-(2,4-difluorophenyl)anthracene; 
         FIG. 256  illustrates a 9-(3,4-difluorophenyl)-1,4-difluoro-10-phenylanthracene; 
         FIG. 257  illustrates a 9-(3,4-difluorophenyl)-1,4-difluoro-10-(4-methoxyphenyl)anthracene; 
         FIG. 258  illustrates a 9-(3,4-difluorophenyl)-1,4-difluoro-10-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 259  illustrates a 9-(2,4-difluorophenyl)-1,4-difluoro-10-(3,4-difluorophenyl)anthracene; 
         FIG. 260  illustrates a 1,4-difluoro-9-phenyl-10-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 261  illustrates a 1,4-difluoro-9-(4-methoxyphenyl)-10-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 262  illustrates a 9-(2,4-difluorophenyl)-1,4-difluoro-10-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 263  illustrates a 9-(2,4-difluorophenyl)-1,4-difluoro-10-phenylanthracene; 
         FIG. 264  illustrates a 9-(2,4-difluorophenyl)-1,4-difluoro-10-(4-methoxyphenyl)anthracene; 
         FIG. 265  illustrates a 2,3-difluoro-9-(2,3,4,5,6-pentafluorophenyl)-10-phenylanthracene; 
         FIG. 266  illustrates a 2,3-difluoro-9-(4-methoxyphenyl)-10-(2,3,4,5,6-pentafluorophenyl)anthracene; 
         FIG. 267  illustrates a 2,3-difluoro-9-(2,3,4,5,6-pentafluorophenyl)-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 268  illustrates a 2,3-difluoro-9-(2,3,4,5,6-pentafluorophenyl)-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 269  illustrates a 2,3-difluoro-9-(2,3,4,5,6-pentafluorophenyl)-10-(3,4,5-trifluoro)anthracene; 
         FIG. 270  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-2,3-difluoro-10-(2,3,4,5,6-pentafluorophenyl)anthracene 
         FIG. 271  illustrates a 9-(3,4-difluorophenyl)-2,3-difluoro-10-(2,3,4,5,6-pentafluorophenyl)anthracene; 
         FIG. 272  illustrates a 2,3-difluoro-9-(2,3,4,5,6-pentafluorophenyl)-10-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 273  illustrates a 9-(2,4-difluorophenyl)-2,3-difluoro-10-(2,3,4,5,6-pentafluorophenyl)anthracene; 
         FIG. 274  illustrates a 2,3-difluoro-9-phenyl-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 275  illustrates a 2,3-difluoro-9-(4-methoxyphenyl)-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 276  illustrates a 2,3-difluoro-9-(2,3,5,6-tetrafluorophenyl)-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 277  illustrates a 2,3-difluoro-9-(2,3,5,6-tetrafluorophenyl)-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 278  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-2,3-difluoro-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 279  illustrates a 9-(3,4-difluorophenyl)-2,3-difluoro-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 280  illustrates a 2,3-difluoro-9-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 281  illustrates a 9-(3,4-difluorophenyl)-2,3-difluoro-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 282  illustrates a 2,3-difluoro-9-phenyl-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 283  illustrates a 2,3-difluoro-9-(4-methoxyphenyl)-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 284  illustrates a 2,3-difluoro-9-(2,3,5,6-tetrafluoro-4-methoxyphenyl)-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 285  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-2,3-difluoro-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 286  illustrates a 9-(3,4-difluorophenyl)-2,3-difluoro-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 287  illustrates a 2,3-difluoro-9-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 288  illustrates a 9-(2,4-difluorophenyl)-2,3-difluoro-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 289  illustrates a 2,3-difluoro-9-phenyl-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 290  illustrates a 2,3-difluoro-9-(4-methoxyphenyl)-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 291  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-2,3-difluoro-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 292  illustrates a 9-(3,4-difluorophenyl)-2,3-difluoro-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 293  illustrates a 2,3-difluoro-9-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 294  illustrates a 9-(2,4-difluorophenyl)-2,3-difluoro-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 295  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-2,3-difluoro-10-phenylanthracene: 
         FIG. 296  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-2,3-difluoro-10-(4-methoxyphenyl)anthracene: 
         FIG. 297  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-10-(3,4-difluorophenyl)-2,3-difluoroanthracene; 
         FIG. 298  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-2,3-difluoro-10-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 299  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-2,3-difluoro-10-(2,4-difluorophenyl)anthracene; 
         FIG. 300  illustrates a 9-(3,4-difluorophenyl)-2,3-difluoro-10-phenylanthracene; 
         FIG. 301  illustrates a 9-(3,4-difluorophenyl)-2,3-difluoro-10-(4-methoxyphenyl)anthracene; 
         FIG. 302  illustrates a 9-(3,4-difluorophenyl)-2,3-difluoro-10-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 303  illustrates a 9-(2,4-difluorophenyl)-2,3-difluoro-10-(3,4-difluorophenyl)anthracene; 
         FIG. 304  illustrates a 2,3-difluoro-9-phenyl-10-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 305  illustrates a 2,3-difluoro-9-(4-methoxyphenyl)-10-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 306  illustrates a 9-(2,4-difluorophenyl)-2,3-difluoro-10-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 307  illustrates a 9-(2,4-difluorophenyl)-2,3-difluoro-10-phenylanthracene; 
         FIG. 308  illustrates a 9-(2,4-difluorophenyl)-2,3-difluoro-10-(4-methoxyphenyl)anthracene; 
         FIG. 309  illustrates a 1,4,5-trifluoro-9-(2,3,4,5,6-pentafluorophenyl)-10-phenylanthracene; 
         FIG. 310  illustrates a 1,4,5-trifluoro-9-(4-methoxyphenyl)-10-(2,3,4,5,6-pentafluorophenyl)anthracene; 
         FIG. 311  illustrates a 1,4,5-trifluoro-9-(2,3,4,5,6-pentafluorophenyl)-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 312  illustrates a 1,4,5-trifluoro-9-(2,3,4,5,6-pentafluorophenyl)-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 313  illustrates a 1,4,5-trifluoro-9-(2,3,4,5,6-pentafluorophenyl)-10-(3,4,5-trifluoro)anthracene; 
         FIG. 314  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-1,4,5-trifluoro-10-(2,3,4,5,6-pentafluorophenyl)anthracene 
         FIG. 315  illustrates a 9-(3,4-difluorophenyl)-1,4,5-trifluoro-10-(2,3,4,5,6-pentafluorophenyl)anthracene; 
         FIG. 316  illustrates a 1,4,5-trifluoro-9-(2,3,4,5,6-pentafluorophenyl)-10-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 317  illustrates a 9-(2,4-difluorophenyl)-1,4,5-trifluoro-10-(2,3,4,5,6-pentafluorophenyl)anthracene; 
         FIG. 318  illustrates a 1,4,5-trifluoro-9-phenyl-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 319  illustrates a 1,4,5-trifluoro-9-(4-methoxyphenyl)-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 320  illustrates a 1,4,5-trifluoro-9-(2,3,5,6-tetrafluorophenyl)-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 321  illustrates a 1,4,5-trifluoro-9-(2,3,5,6-tetrafluorophenyl)-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 322  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-1,4,5-trifluoro-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 323  illustrates a 9-(3,4-difluorophenyl)-1,4,5-trifluoro-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 324  illustrates a 1,4,5-trifluoro-9-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 325  illustrates a 9-(3,4-difluorophenyl)-1,4,5-trifluoro-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 326  illustrates a 1,4,5-trifluoro-9-phenyl-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 327  illustrates a 1,4,5-trifluoro-9-(4-methoxyphenyl)-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 328  illustrates a 1,4,5-trifluoro-9-(2,3,5,6-tetrafluoro-4-methoxyphenyl)-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 329  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-1,4,5-trifluoro-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 330  illustrates a 9-(3,4-difluorophenyl)-1,4,5-trifluoro-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 331  illustrates a 1,4,5-trifluoro-9-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 332  illustrates a 9-(2,4-difluorophenyl)-1,4,5-trifluoro-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 333  illustrates a 1,4,5-trifluoro-9-phenyl-10-(3,4,5-trifluorophenyl) anthracene; 
         FIG. 334  illustrates a 1,4,5-trifluoro-9-(4-methoxyphenyl)-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 335  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-1,4,5-trifluoro-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 336  illustrates a 9-(3,4-difluorophenyl)-1,4,5-trifluoro-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 337  illustrates a 1,4,5-trifluoro-9-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 338  illustrates a 9-(2,4-difluorophenyl)-1,4,5-trifluoro-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 339  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-1,4,5-trifluoro-10-phenylanthracene: 
         FIG. 340  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-1,4,5-trifluoro-10-(4-methoxyphenyl)anthracene: 
         FIG. 341  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-10-(3,4-difluorophenyl)-1,4,5-trifluoroanthracene; 
         FIG. 342  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-1,4,5-trifluoro-10-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 343  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-1,4,5-trifluoro-10-(2,4-difluorophenyl)anthracene; 
         FIG. 344  illustrates a 9-(3,4-difluorophenyl)-1,4,5-trifluoro-10-phenylanthracene; 
         FIG. 345  illustrates a 9-(3,4-difluorophenyl)-1,4,5-trifluoro-10-(4-methoxyphenyl)anthracene; 
         FIG. 346  illustrates a 9-(3,4-difluorophenyl)-1,4,5-trifluoro-10-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 347  illustrates a 9-(2,4-difluorophenyl)-1,4,5-trifluoro-10-(3,4-difluorophenyl)anthracene; 
         FIG. 348  illustrates a 1,4,5-trifluoro-9-phenyl-10-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 349  illustrates a 1,4,5-trifluoro-9-(4-methoxyphenyl)-10-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 350  illustrates a 9-(2,4-difluorophenyl)-1,4,5-trifluoro-10-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 351  illustrates a 9-(2,4-difluorophenyl)-1,4,5-trifluoro-10-phenylanthracene; 
         FIG. 352  illustrates a 9-(2,4-difluorophenyl)-1,4,5-trifluoro-10-(4-methoxyphenyl)anthracene; 
         FIG. 353  illustrates a 2,3,5-trifluoro-9-(2,3,4,5,6-pentafluorophenyl)-10-phenylanthracene; 
         FIG. 354  illustrates a 2,3,5-trifluoro-9-(4-methoxyphenyl)-10-(2,3,4,5,6-pentafluorophenyl)anthracene; 
         FIG. 355  illustrates a 2,3,5-trifluoro-9-(2,3,4,5,6-pentafluorophenyl)-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 356  illustrates a 2,3,5-trifluoro-9-(2,3,4,5,6-pentafluorophenyl)-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 357  illustrates a 2,3,5-trifluoro-9-(2,3,4,5,6-pentafluorophenyl)-10-(3,4,5-trifluoro)anthracene; 
         FIG. 358  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-2,3,5-trifluoro-10-(2,3,4,5,6-pentafluorophenyl)anthracene 
         FIG. 359  illustrates a 9-(3,4-difluorophenyl)-2,3,5-trifluoro-10-(2,3,4,5,6-pentafluorophenyl)anthracene; 
         FIG. 360  illustrates a 2,3,5-trifluoro-9-(2,3,4,5,6-pentafluorophenyl)-10-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 361  illustrates a 9-(2,4-difluorophenyl)-2,3,5-trifluoro-10-(2,3,4,5,6-pentafluorophenyl)anthracene; 
         FIG. 362  illustrates a 2,3,5-trifluoro-9-phenyl-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 363  illustrates a 2,3,5-trifluoro-9-(4-methoxyphenyl)-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 364  illustrates a 2,3,5-trifluoro-9-(2,3,5,6-tetrafluorophenyl)-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 365  illustrates a 2,3,5-trifluoro-9-(2,3,5,6-tetrafluorophenyl)-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 366  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-2,3,5-trifluoro-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 367  illustrates a 9-(3,4-difluorophenyl)-2,3,5-trifluoro-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 368  illustrates a 2,3,5-trifluoro-9-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 369  illustrates a 9-(3,4-difluorophenyl)-2,3,5-trifluoro-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 370  illustrates a 2,3,5-trifluoro-9-phenyl-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 371  illustrates a 2,3,5-trifluoro-9-(4-methoxyphenyl)-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 372  illustrates a 2,3,5-trifluoro-9-(2,3,5,6-tetrafluoro-4-methoxyphenyl)-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 373  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-2,3,5-trifluoro-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 374  illustrates a 9-(3,4-difluorophenyl)-2,3,5-trifluoro-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 375  illustrates a 2,3,5-trifluoro-9-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 376  illustrates a 9-(2,4-difluorophenyl)-2,3,5-trifluoro-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 377  illustrates a 2,3,5-trifluoro-9-phenyl-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 378  illustrates a 2,3,5-trifluoro-9-(4-methoxyphenyl)-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 379  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-2,3,5-trifluoro-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 380  illustrates a 9-(3,4-difluorophenyl)-2,3,5-trifluoro-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 381  illustrates a 2,3,5-trifluoro-9-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 382  illustrates a 9-(2,4-difluorophenyl)-2,3,5-trifluoro-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 383  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-2,3,5-trifluoro-10-phenylanthracene: 
         FIG. 384  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-2,3,5-trifluoro-10-(4-methoxyphenyl)anthracene: 
         FIG. 385  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-10-(3,4-difluorophenyl)-2,3,5-trifluoroanthracene; 
         FIG. 386  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-2,3,5-trifluoro-10-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 387  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-2,3,5-trifluoro-10-(2,4-difluorophenyl)anthracene; 
         FIG. 388  illustrates a 9-(3,4-difluorophenyl)-2,3,5-trifluoro-10-phenylanthracene; 
         FIG. 389  illustrates a 9-(3,4-difluorophenyl)-2,3,5-trifluoro-10-(4-methoxyphenyl)anthracene; 
         FIG. 390  illustrates a 9-(3,4-difluorophenyl)-2,3,5-trifluoro-10-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 391  illustrates a 9-(2,4-difluorophenyl)-2,3,5-trifluoro-10-(3,4-difluorophenyl)anthracene; 
         FIG. 392  illustrates a 2,3,5-trifluoro-9-phenyl-10-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 393  illustrates a 2,3,5-trifluoro-9-(4-methoxyphenyl)-10-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 394  illustrates a 9-(2,4-difluorophenyl)-2,3,5-trifluoro-10-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 395  illustrates a 9-(2,4-difluorophenyl)-2,3,5-trifluoro-10-phenylanthracene; 
         FIG. 396  illustrates a 9-(2,4-difluorophenyl)-2,3,5-trifluoro-10-(4-methoxyphenyl)anthracene; 
         FIG. 397  illustrates a 1,4,6-trifluoro-9-(2,3,4,5,6-pentafluorophenyl)-10-phenylanthracene; 
         FIG. 398  illustrates a 1,4,6-trifluoro-9-(4-methoxyphenyl)-10-(2,3,4,5,6-pentafluorophenyl)anthracene; 
         FIG. 399  illustrates a 1,4,6-trifluoro-9-(2,3,4,5,6-pentafluorophenyl)-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 400  illustrates a 1,4,6-trifluoro-9-(2,3,4,5,6-pentafluorophenyl)-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 401  illustrates a 1,4,6-trifluoro-9-(2,3,4,5,6-pentafluorophenyl)-10-(3,4,5-trifluoro)anthracene; 
         FIG. 402  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-1,4,6-trifluoro-10-(2,3,4,5,6-pentafluorophenyl)anthracene 
         FIG. 403  illustrates a 9-(3,4-difluorophenyl)-1,4,6-trifluoro-10-(2,3,4,5,6-pentafluorophenyl)anthracene; 
         FIG. 404  illustrates a 1,4,6-trifluoro-9-(2,3,4,5,6-pentafluorophenyl)-10-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 405  illustrates a 9-(2,4-difluorophenyl)-1,4,6-trifluoro-10-(2,3,4,5,6-pentafluorophenyl)anthracene; 
         FIG. 406  illustrates a 1,4,6-trifluoro-9-phenyl-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 407  illustrates a 1,4,6-trifluoro-9-(4-methoxyphenyl)-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 408  illustrates a 1,4,6-trifluoro-9-(2,3,5,6-tetrafluorophenyl)-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 409  illustrates a 1,4,6-trifluoro-9-(2,3,5,6-tetrafluorophenyl)-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 410  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-1,4,6-trifluoro-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 411  illustrates a 9-(3,4-difluorophenyl)-1,4,6-trifluoro-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 412  illustrates a 1,4,6-trifluoro-9-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 413  illustrates a 9-(3,4-difluorophenyl)-1,4,6-trifluoro-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 414  illustrates a 1,4,6-trifluoro-9-phenyl-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 415  illustrates a 1,4,6-trifluoro-9-(4-methoxyphenyl)-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 416  illustrates a 1,4,6-trifluoro-9-(2,3,5,6-tetrafluoro-4-methoxyphenyl)-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 417  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-1,4,6-trifluoro-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 418  illustrates a 9-(3,4-difluorophenyl)-1,4,6-trifluoro-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 419  illustrates a 1,4,6-trifluoro-9-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 420  illustrates a 9-(2,4-difluorophenyl)-1,4,6-trifluoro-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 421  illustrates a 1,4,6-trifluoro-9-phenyl-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 422  illustrates a 1,4,6-trifluoro-9-(4-methoxyphenyl)-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 423  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-1,4,6-trifluoro-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 424  illustrates a 9-(3,4-difluorophenyl)-1,4,6-trifluoro-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 425  illustrates a 1,4,6-trifluoro-9-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 426  illustrates a 9-(2,4-difluorophenyl)-1,4,6-trifluoro-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 427  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-1,4,6-trifluoro-10-phenylanthracene: 
         FIG. 428  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-1,4,6-trifluoro-10-(4-methoxyphenyl)anthracene: 
         FIG. 429  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-10-(3,4-difluorophenyl)-1,4,6-trifluoroanthracene; 
         FIG. 430  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-1,4,6-trifluoro-10-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 431  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-1,4,6-trifluoro-10-(2,4-difluorophenyl)anthracene; 
         FIG. 432  illustrates a 9-(3,4-difluorophenyl)-1,4,6-trifluoro-10-phenylanthracene; 
         FIG. 433  illustrates a 9-(3,4-difluorophenyl)-1,4,6-trifluoro-10-(4-methoxyphenyl)anthracene; 
         FIG. 434  illustrates a 9-(3,4-difluorophenyl)-1,4,6-trifluoro-10-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 435  illustrates a 9-(2,4-difluorophenyl)-1,4,6-trifluoro-10-(3,4-difluorophenyl)anthracene; 
         FIG. 436  illustrates a 1,4,6-trifluoro-9-phenyl-10-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 437  illustrates a 1,4,6-trifluoro-9-(4-methoxyphenyl)-10-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 438  illustrates a 9-(2,4-difluorophenyl)-1,4,6-trifluoro-10-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 439  illustrates a 9-(2,4-difluorophenyl)-1,4,6-trifluoro-10-phenylanthracene; 
         FIG. 440  illustrates a 9-(2,4-difluorophenyl)-1,4,6-trifluoro-10-(4-methoxyphenyl)anthracene; 
         FIG. 441  illustrates a 2,3,6-trifluoro-9-(2,3,4,5,6-pentafluorophenyl)-10-phenylanthracene; 
         FIG. 442  illustrates a 2,3,6-trifluoro-9-(4-methoxyphenyl)-10-(2,3,4,5,6-pentafluorophenyl)anthracene; 
         FIG. 443  illustrates a 2,3,6-trifluoro-9-(2,3,4,5,6-pentafluorophenyl)-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 444  illustrates a 2,3,6-trifluoro-9-(2,3,4,5,6-pentafluorophenyl)-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 445  illustrates a 2,3,6-trifluoro-9-(2,3,4,5,6-pentafluorophenyl)-10-(3,4,5-trifluoro)anthracene; 
         FIG. 446  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-2,3,6-trifluoro-10-(2,3,4,5,6-pentafluorophenyl)anthracene 
         FIG. 447  illustrates a 9-(3,4-difluorophenyl)-2,3,6-trifluoro-10-(2,3,4,5,6-pentafluorophenyl)anthracene; 
         FIG. 448  illustrates a 2,3,6-trifluoro-9-(2,3,4,5,6-pentafluorophenyl)-10-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 449  illustrates a 9-(2,4-difluorophenyl)-2,3,6-trifluoro-10-(2,3,4,5,6-pentafluorophenyl)anthracene; 
         FIG. 450  illustrates a 2,3,6-trifluoro-9-phenyl-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 451  illustrates a 2,3,6-trifluoro-9-(4-methoxyphenyl)-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 452  illustrates a 2,3,6-trifluoro-9-(2,3,5,6-tetrafluorophenyl)-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 453  illustrates a 2,3,6-trifluoro-9-(2,3,5,6-tetrafluorophenyl)-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 454  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-2,3,6-trifluoro-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 455  illustrates a 9-(3,4-difluorophenyl)-2,3,6-trifluoro-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 456  illustrates a 2,3,6-trifluoro-9-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 457  illustrates a 9-(3,4-difluorophenyl)-2,3,6-trifluoro-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 458  illustrates a 2,3,6-trifluoro-9-phenyl-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 459  illustrates a 2,3,6-trifluoro-9-(4-methoxyphenyl)-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 460  illustrates a 2,3,6-trifluoro-9-(2,3,5,6-tetrafluoro-4-methoxyphenyl)-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 461  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-2,3,6-trifluoro-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 462  illustrates a 9-(3,4-difluorophenyl)-2,3,6-trifluoro-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 463  illustrates a 2,3,6-trifluoro-9-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 464  illustrates a 9-(2,4-difluorophenyl)-2,3,6-trifluoro-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 465  illustrates a 2,3,6-trifluoro-9-phenyl-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 466  illustrates a 2,3,6-trifluoro-9-(4-methoxyphenyl)-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 467  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-2,3,6-trifluoro-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 468  illustrates a 9-(3,4-difluorophenyl)-2,3,6-trifluoro-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 469  illustrates a 2,3,6-trifluoro-9-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 470  illustrates a 9-(2,4-difluorophenyl)-2,3,6-trifluoro-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 471  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-2,3,6-trifluoro-10-phenylanthracene: 
         FIG. 472  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-2,3,6-trifluoro-10-(4-methoxyphenyl)anthracene: 
         FIG. 473  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-10-(3,4-difluorophenyl)-2,3,6-trifluoroanthracene; 
         FIG. 474  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-2,3,6-trifluoro-10-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 475  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-2,3,6-trifluoro-10-(2,4-difluorophenyl)anthracene; 
         FIG. 476  illustrates a 9-(3,4-difluorophenyl)-2,3,6-trifluoro-10-phenylanthracene; 
         FIG. 477  illustrates a 9-(3,4-difluorophenyl)-2,3,6-trifluoro-10-(4-methoxyphenyl)anthracene; 
         FIG. 478  illustrates a 9-(3,4-difluorophenyl)-2,3,6-trifluoro-10-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 479  illustrates a 9-(2,4-difluorophenyl)-2,3,6-trifluoro-10-(3,4-difluorophenyl)anthracene; 
         FIG. 480  illustrates a 2,3,6-trifluoro-9-phenyl-10-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 481  illustrates a 2,3,6-trifluoro-9-(4-methoxyphenyl)-10-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 482  illustrates a 9-(2,4-difluorophenyl)-2,3,6-trifluoro-10-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 483  illustrates a 9-(2,4-difluorophenyl)-2,3,6-trifluoro-10-phenylanthracene; 
         FIG. 484  illustrates a 9-(2,4-difluorophenyl)-2,3,6-trifluoro-10-(4-methoxyphenyl)anthracene; 
         FIG. 485  illustrates a 1,2,3,4-tetrafluoro-9-(2,3,4,5,6-pentafluorophenyl)-10-phenylanthracene; 
         FIG. 486  illustrates a 1,2,3,4-tetrafluoro-9-(4-methoxyphenyl)-10-(2,3,4,5,6-pentafluorophenyl)anthracene; 
         FIG. 487  illustrates a 1,2,3,4-tetrafluoro-9-(2,3,4,5,6-pentafluorophenyl)-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 488  illustrates a 1,2,3,4-tetrafluoro-9-(2,3,4,5,6-pentafluorophenyl)-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 489  illustrates a 1,2,3,4-tetrafluoro-9-(2,3,4,5,6-pentafluorophenyl)-10-(3,4,5-trifluoro)anthracene; 
         FIG. 490  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-1,2,3,4-tetrafluoro-10-(2,3,4,5,6-pentafluorophenyl)anthracene 
         FIG. 491  illustrates a 9-(3,4-difluorophenyl)-1,2,3,4-tetrafluoro-10-(2,3,4,5,6-pentafluorophenyl)anthracene; 
         FIG. 492  illustrates a 1,2,3,4-tetrafluoro-9-(2,3,4,5,6-pentafluorophenyl)-10-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 493  illustrates a 9-(2,4-difluorophenyl)-1,2,3,4-tetrafluoro-10-(2,3,4,5,6-pentafluorophenyl)anthracene; 
         FIG. 494  illustrates a 1,2,3,4-tetrafluoro-9-phenyl-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 495  illustrates a 1,2,3,4-tetrafluoro-9-(4-methoxyphenyl)-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 496  illustrates a 1,2,3,4-tetrafluoro-9-(2,3,5,6-tetrafluorophenyl)-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 497  illustrates a 1,2,3,4-tetrafluoro-9-(2,3,5,6-tetrafluorophenyl)-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 498  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-1,2,3,4-tetrafluoro-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 499  illustrates a 9-(3,4-difluorophenyl)-1,2,3,4-tetrafluoro-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 500  illustrates a 1,2,3,4-tetrafluoro-9-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 501  illustrates a 9-(3,4-difluorophenyl)-1,2,3,4-tetrafluoro-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 502  illustrates a 1,2,3,4-tetrafluoro-9-phenyl-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 503  illustrates a 1,2,3,4-tetrafluoro-9-(4-methoxyphenyl)-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 504  illustrates a 1,2,3,4-tetrafluoro-9-(2,3,5,6-tetrafluoro-4-methoxyphenyl)-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 505  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-1,2,3,4-tetrafluoro-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 506  illustrates a 9-(3,4-difluorophenyl)-1,2,3,4-tetrafluoro-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 507  illustrates a 1,2,3,4-tetrafluoro-9-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 508  illustrates a 9-(2,4-difluorophenyl)-1,2,3,4-tetrafluoro-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 509  illustrates a 1,2,3,4-tetrafluoro-9-phenyl-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 510  illustrates a 1,2,3,4-tetrafluoro-9-(4-methoxyphenyl)-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 511  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-1,2,3,4-tetrafluoro-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 512  illustrates a 9-(3,4-difluorophenyl)-1,2,3,4-tetrafluoro-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 513  illustrates a 1,2,3,4-tetrafluoro-9-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 514  illustrates a 9-(2,4-difluorophenyl)-1,2,3,4-tetrafluoro-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 515  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-1,2,3,4-tetrafluoro-10-phenylanthracene: 
         FIG. 516  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-1,2,3,4-tetrafluoro-10-(4-methoxyphenyl)anthracene: 
         FIG. 517  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-10-(3,4-difluorophenyl)-1,2,3,4-tetrafluoroanthracene; 
         FIG. 518  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-1,2,3,4-tetrafluoro-10-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 519  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-1,2,3,4-tetrafluoro-10-(2,4-difluorophenyl)anthracene; 
         FIG. 520  illustrates a 9-(3,4-difluorophenyl)-1,2,3,4-tetrafluoro-10-phenylanthracene; 
         FIG. 521  illustrates a 9-(3,4-difluorophenyl)-1,2,3,4-tetrafluoro-10-(4-methoxyphenyl)anthracene; 
         FIG. 522  illustrates a 9-(3,4-difluorophenyl)-1,2,3,4-tetrafluoro-10-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 523  illustrates a 9-(2,4-difluorophenyl)-1,2,3,4-tetrafluoro-10-(3,4-difluorophenyl)anthracene; 
         FIG. 524  illustrates a 1,2,3,4-tetrafluoro-9-phenyl-10-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 525  illustrates a 1,2,3,4-tetrafluoro-9-(4-methoxyphenyl)-10-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 526  illustrates a 9-(2,4-difluorophenyl)-1,2,3,4-tetrafluoro-10-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 527  illustrates a 9-(2,4-difluorophenyl)-1,2,3,4-tetrafluoro-10-phenylanthracene; 
         FIG. 528  illustrates a 9-(2,4-difluorophenyl)-1,2,3,4-tetrafluoro-10-(4-methoxyphenyl)anthracene; 
         FIG. 529  illustrates a 1,2,3,4,5-pentafluoro-9-(2,3,4,5,6-pentafluorophenyl)-10-phenylanthracene; 
         FIG. 530  illustrates a 1,2,3,4,5-pentafluoro-9-(4-methoxyphenyl)-10-(2,3,4,5,6-pentafluorophenyl)anthracene; 
         FIG. 531  illustrates a 1,2,3,4,5-pentafluoro-9-(2,3,4,5,6-pentafluorophenyl)-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 532  illustrates a 1,2,3,4,5-pentafluoro-9-(2,3,4,5,6-pentafluorophenyl)-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 533  illustrates a 1,2,3,4,5-pentafluoro-9-(2,3,4,5,6-pentafluorophenyl)-10-(3,4,5-trifluoro)anthracene; 
         FIG. 534  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-1,2,3,4,5-pentafluoro-10-(2,3,4,5,6-pentafluorophenyl)anthracene 
         FIG. 535  illustrates a 9-(3,4-difluorophenyl)-1,2,3,4,5-pentafluoro-10-(2,3,4,5,6-pentafluorophenyl)anthracene; 
         FIG. 536  illustrates a 1,2,3,4,5-pentafluoro-9-(2,3,4,5,6-pentafluorophenyl)-10-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 537  illustrates a 9-(2,4-difluorophenyl)-1,2,3,4,5-pentafluoro-10-(2,3,4,5,6-pentafluorophenyl)anthracene; 
         FIG. 538  illustrates a 1,2,3,4,5-pentafluoro-9-phenyl-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 539  illustrates a 1,2,3,4,5-pentafluoro-9-(4-methoxyphenyl)-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 540  illustrates a 1,2,3,4,5-pentafluoro-9-(2,3,5,6-tetrafluorophenyl)-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 541  illustrates a 1,2,3,4,5-pentafluoro-9-(2,3,5,6-tetrafluorophenyl)-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 542  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-1,2,3,4,5-pentafluoro-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 543  illustrates a 9-(3,4-difluorophenyl)-1,2,3,4,5-pentafluoro-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 544  illustrates a 1,2,3,4,5-pentafluoro-9-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 545  illustrates a 9-(3,4-difluorophenyl)-1,2,3,4,5-pentafluoro-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 546  illustrates a 1,2,3,4,5-pentafluoro-9-phenyl-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 547  illustrates a 1,2,3,4,5-pentafluoro-9-(4-methoxyphenyl)-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 548  illustrates a 1,2,3,4,5-pentafluoro-9-(2,3,5,6-tetrafluoro-4-methoxyphenyl)-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 549  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-1,2,3,4,5-pentafluoro-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 550  illustrates a 9-(3,4-difluorophenyl)-1,2,3,4,5-pentafluoro-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 551  illustrates a 1,2,3,4,5-pentafluoro-9-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 552  illustrates a 9-(2,4-difluorophenyl)-1,2,3,4,5-pentafluoro-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 553  illustrates a 1,2,3,4,5-pentafluoro-9-phenyl-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 554  illustrates a 1,2,3,4,5-pentafluoro-9-(4-methoxyphenyl)-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 555  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-1,2,3,4,5-pentafluoro-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 556  illustrates a 9-(3,4-difluorophenyl)-1,2,3,4,5-pentafluoro-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 557  illustrates a 1,2,3,4,5-pentafluoro-9-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 558  illustrates a 9-(2,4-difluorophenyl)-1,2,3,4,5-pentafluoro-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 559  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-1,2,3,4,5-pentafluoro-10-phenylanthracene: 
         FIG. 560  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-1,2,3,4,5-pentafluoro-10-(4-methoxyphenyl)anthracene: 
         FIG. 561  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-10-(3,4-difluorophenyl)-1,2,3,4,5-pentafluoroanthracene; 
         FIG. 562  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-1,2,3,4,5-pentafluoro-10-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 563  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-1,2,3,4,5-pentafluoro-10-(2,4-difluorophenyl)anthracene; 
         FIG. 564  illustrates a 9-(3,4-difluorophenyl)-1,2,3,4,5-pentafluoro-10-phenylanthracene; 
         FIG. 565  illustrates a 9-(3,4-difluorophenyl)-1,2,3,4,5-pentafluoro-10-(4-methoxyphenyl)anthracene; 
         FIG. 566  illustrates a 9-(3,4-difluorophenyl)-1,2,3,4,5-pentafluoro-10-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 567  illustrates a 9-(2,4-difluorophenyl)-1,2,3,4,5-pentafluoro-10-(3,4-difluorophenyl)anthracene; 
         FIG. 568  illustrates a 1,2,3,4,5-pentafluoro-9-phenyl-10-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 569  illustrates a 1,2,3,4,5-pentafluoro-9-(4-methoxyphenyl)-10-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 570  illustrates a 9-(2,4-difluorophenyl)-1,2,3,4,5-pentafluoro-10-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 571  illustrates a 9-(2,4-difluorophenyl)-1,2,3,4,5-pentafluoro-10-phenylanthracene; 
         FIG. 572  illustrates a 9-(2,4-difluorophenyl)-1,2,3,4,5-pentafluoro-10-(4-methoxyphenyl)anthracene; 
         FIG. 573  illustrates a 1,2,3,4,6-pentafluoro-9-(2,3,4,5,6-pentafluorophenyl)-10-phenylanthracene; 
         FIG. 574  illustrates a 1,2,3,4,6-pentafluoro-9-(4-methoxyphenyl)-10-(2,3,4,5,6-pentafluorophenyl)anthracene; 
         FIG. 575  illustrates a 1,2,3,4,6-pentafluoro-9-(2,3,4,5,6-pentafluorophenyl)-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 576  illustrates a 1,2,3,4,6-pentafluoro-9-(2,3,4,5,6-pentafluorophenyl)-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 577  illustrates a 1,2,3,4,6-pentafluoro-9-(2,3,4,5,6-pentafluorophenyl)-10-(3,4,5-trifluoro)anthracene; 
         FIG. 578  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-1,2,3,4,6-pentafluoro-10-(2,3,4,5,6-pentafluorophenyl)anthracene 
         FIG. 579  illustrates a 9-(3,4-difluorophenyl)-1,2,3,4,6-pentafluoro-10-(2,3,4,5,6-pentafluorophenyl)anthracene; 
         FIG. 580  illustrates a 1,2,3,4,6-pentafluoro-9-(2,3,4,5,6-pentafluorophenyl)-10-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 581  illustrates a 9-(2,4-difluorophenyl)-1,2,3,4,6-pentafluoro-10-(2,3,4,5,6-pentafluorophenyl)anthracene; 
         FIG. 582  illustrates a 1,2,3,4,6-pentafluoro-9-phenyl-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 583  illustrates a 1,2,3,4,6-pentafluoro-9-(4-methoxyphenyl)-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 584  illustrates a 1,2,3,4,6-pentafluoro-9-(2,3,5,6-tetrafluorophenyl)-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 585  illustrates a 1,2,3,4,6-pentafluoro-9-(2,3,5,6-tetrafluorophenyl)-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 586  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-1,2,3,4,6-pentafluoro-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 587  illustrates a 9-(3,4-difluorophenyl)-1,2,3,4,6-pentafluoro-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 588  illustrates a 1,2,3,4,6-pentafluoro-9-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 589  illustrates a 9-(3,4-difluorophenyl)-1,2,3,4,6-pentafluoro-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 590  illustrates a 1,2,3,4,6-pentafluoro-9-phenyl-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 591  illustrates a 1,2,3,4,6-pentafluoro-9-(4-methoxyphenyl)-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 592  illustrates a 1,2,3,4,6-pentafluoro-9-(2,3,5,6-tetrafluoro-4-methoxyphenyl)-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 593  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-1,2,3,4,6-pentafluoro-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 594  illustrates a 9-(3,4-difluorophenyl)-1,2,3,4,6-pentafluoro-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 595  illustrates a 1,2,3,4,6-pentafluoro-9-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 596  illustrates a 9-(2,4-difluorophenyl)-1,2,3,4,6-pentafluoro-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 597  illustrates a 1,2,3,4,6-pentafluoro-9-phenyl-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 598  illustrates a 1,2,3,4,6-pentafluoro-9-(4-methoxyphenyl)-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 599  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-1,2,3,4,6-pentafluoro-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 600  illustrates a 9-(3,4-difluorophenyl)-1,2,3,4,6-pentafluoro-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 601  illustrates a 1,2,3,4,6-pentafluoro-9-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 602  illustrates a 9-(2,4-difluorophenyl)-1,2,3,4,6-pentafluoro-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 603  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-1,2,3,4,6-pentafluoro-10-phenylanthracene: 
         FIG. 604  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-1,2,3,4,6-pentafluoro-10-(4-methoxyphenyl)anthracene: 
         FIG. 605  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-10-(3,4-difluorophenyl)-1,2,3,4,6-pentafluoroanthracene; 
         FIG. 606  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-1,2,3,4,6-pentafluoro-10-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 607  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-1,2,3,4,6-pentafluoro-10-(2,4-difluorophenyl)anthracene; 
         FIG. 608  illustrates a 9-(3,4-difluorophenyl)-1,2,3,4,6-pentafluoro-10-phenylanthracene; 
         FIG. 609  illustrates a 9-(3,4-difluorophenyl)-1,2,3,4,6-pentafluoro-10-(4-methoxyphenyl)anthracene; 
         FIG. 610  illustrates a 9-(3,4-difluorophenyl)-1,2,3,4,6-pentafluoro-10-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 611  illustrates a 9-(2,4-difluorophenyl)-1,2,3,4,6-pentafluoro-10-(3,4-difluorophenyl)anthracene; 
         FIG. 612  illustrates a 1,2,3,4,6-pentafluoro-9-phenyl-10-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 613  illustrates a 1,2,3,4,6-pentafluoro-9-(4-methoxyphenyl)-10-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 614  illustrates a 9-(2,4-difluorophenyl)-1,2,3,4,6-pentafluoro-10-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 615  illustrates a 9-(2,4-difluorophenyl)-1,2,3,4,6-pentafluoro-10-phenylanthracene; 
         FIG. 616  illustrates a 9-(2,4-difluorophenyl)-1,2,3,4,6-pentafluoro-10-(4-methoxyphenyl)anthracene; 
         FIG. 617  illustrates a 1,2,3,4,5,6,7,8-octafluoro-9-(2,3,4,5,6-pentafluorophenyl)-10-phenylanthracene; 
         FIG. 618  illustrates a 1,2,3,4,5,6,7,8-octafluoro-9-(4-methoxyphenyl)-10-(2,3,4,5,6-pentafluorophenyl)anthracene; 
         FIG. 619  illustrates a 1,2,3,4,5,6,7,8-octafluoro-9-(2,3,4,5,6-pentafluorophenyl)-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 620  illustrates a 1,2,3,4,5,6,7,8-octafluoro-9-(2,3,4,5,6-pentafluorophenyl)-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 621  illustrates a 1,2,3,4,5,6,7,8-octafluoro-9-(2,3,4,5,6-pentafluorophenyl)-10-(3,4,5-trifluoro)anthracene; 
         FIG. 622  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-1,2,3,4,5,6,7,8-octafluoro-10-(2,3,4,5,6-pentafluorophenyl)anthracene 
         FIG. 623  illustrates a 9-(3,4-difluorophenyl)-1,2,3,4,5,6,7,8-octafluoro-10-(2,3,4,5,6-pentafluorophenyl)anthracene; 
         FIG. 624  illustrates a 1,2,3,4,5,6,7,8-octafluoro-9-(2,3,4,5,6-pentafluorophenyl)-10-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 625  illustrates a 9-(2,4-difluorophenyl)-1,2,3,4,5,6,7,8-octafluoro-10-(2,3,4,5,6-pentafluorophenyl)anthracene; 
         FIG. 626  illustrates a 1,2,3,4,5,6,7,8-octafluoro-9-phenyl-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 627  illustrates a 1,2,3,4,5,6,7,8-octafluoro-9-(4-methoxyphenyl)-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 628  illustrates a 1,2,3,4,5,6,7,8-octafluoro-9-(2,3,5,6-tetrafluorophenyl)-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 629  illustrates a 1,2,3,4,5,6,7,8-octafluoro-9-(2,3,5,6-tetrafluorophenyl)-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 630  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-1,2,3,4,5,6,7,8-octafluoro-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 631  illustrates a 9-(3,4-difluorophenyl)-1,2,3,4,5,6,7,8-octafluoro-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 632  illustrates a 1,2,3,4,5,6,7,8-octafluoro-9-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 633  illustrates a 9-(3,4-difluorophenyl)-1,2,3,4,5,6,7,8-octafluoro-10-(2,3,5,6-tetrafluorophenyl)anthracene; 
         FIG. 634  illustrates a 1,2,3,4,5,6,7,8-octafluoro-9-phenyl-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 635  illustrates a 1,2,3,4,5,6,7,8-octafluoro-9-(4-methoxyphenyl)-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 636  illustrates a 1,2,3,4,5,6,7,8-octafluoro-9-(2,3,5,6-tetrafluoro-4-methoxyphenyl)-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 637  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-1,2,3,4,5,6,7,8-octafluoro-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 638  illustrates a 9-(3,4-difluorophenyl)-1,2,3,4,5,6,7,8-octafluoro-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 639  illustrates a 1,2,3,4,5,6,7,8-octafluoro-9-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 640  illustrates a 9-(2,4-difluorophenyl)-1,2,3,4,5,6,7,8-octafluoro-10-(2,3,5,6-tetrafluoro-4-methoxyphenyl)anthracene; 
         FIG. 641  illustrates a 1,2,3,4,5,6,7,8-octafluoro-9-phenyl-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 642  illustrates a 1,2,3,4,5,6,7,8-octafluoro-9-(4-methoxyphenyl)-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 643  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-1,2,3,4,5,6,7,8-octafluoro-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 644  illustrates a 9-(3,4-difluorophenyl)-1,2,3,4,5,6,7,8-octafluoro-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 645  illustrates a 1,2,3,4,5,6,7,8-octafluoro-9-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 646  illustrates a 9-(2,4-difluorophenyl)-1,2,3,4,5,6,7,8-octafluoro-10-(3,4,5-trifluorophenyl)anthracene; 
         FIG. 647  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-1,2,3,4,5,6,7,8-octafluoro-10-phenylanthracene: 
         FIG. 648  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-1,2,3,4,5,6,7,8-octafluoro-10-(4-methoxyphenyl)anthracene: 
         FIG. 649  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-10-(3,4-difluorophenyl)-1,2,3,4,5,6,7,8-octafluoroanthracene; 
         FIG. 650  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-1,2,3,4,5,6,7,8-octafluoro-10-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 651  illustrates a 9-(2,6-difluoro-4-methoxyphenyl)-1,2,3,4,5,6,7,8-octafluoro-10-(2,4-difluorophenyl)anthracene; 
         FIG. 652  illustrates a 9-(3,4-difluorophenyl)-1,2,3,4,5,6,7,8-octafluoro-10-phenylanthracene; 
         FIG. 653  illustrates a 9-(3,4-difluorophenyl)-1,2,3,4,5,6,7,8-octafluoro-10-(4-methoxyphenyl)anthracene; 
         FIG. 654  illustrates a 9-(3,4-difluorophenyl)-1,2,3,4,5,6,7,8-octafluoro-10-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 655  illustrates a 9-(2,4-difluorophenyl)-1,2,3,4,5,6,7,8-octafluoro-10-(3,4-difluorophenyl)anthracene; 
         FIG. 656  illustrates a 1,2,3,4,5,6,7,8-octafluoro-9-phenyl-10-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 657  illustrates a 1,2,3,4,5,6,7,8-octafluoro-9-(4-methoxyphenyl)-10-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 658  illustrates a 9-(2,4-difluorophenyl)-1,2,3,4,5,6,7,8-octafluoro-10-[2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl]anthracene; 
         FIG. 659  illustrates a 9-(2,4-difluorophenyl)-1,2,3,4,5,6,7,8-octafluoro-10-phenylanthracene; 
         FIG. 660  illustrates a 9-(2,4-difluorophenyl)-1,2,3,4,5,6,7,8-octafluoro-10-(4-methoxyphenyl)anthracene; 
         FIG. 661  is a graph which illustrates chemiluminescent systems containing several of the instantly disclosed anthracene fluorescers, which are shown to produce light having an emission maximum from about 390 nm to less than 438 nm. 
     
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
     The present invention can be achieved by providing a compound represented by Formula (1): 
     
       
                 
         
             
             
         
      
         
         
           
             wherein Ar 1  has a structure represented by Formula (2), where An shows the attachment to the anthracene ring as described in Formula (1), 
           
         
       
    
     
       
                 
         
             
             
         
      
         
         
           
             wherein Ar 2  has a structure represented by Formula (3), where An shows the attachment to the anthracene ring, 
           
         
       
    
     
       
                 
         
             
             
         
      
         
         
           
             wherein Ar 1  and Ar 2  are the same or different from each other. 
           
         
       
    
     The new species of anthracenes according to the invention may be prepared by a method, according to one of the Reaction Schemes given below. 
     
       
                 
         
             
             
         
      
       
                 
         
             
             
         
       
     
     One process of the present invention, as shown in Reaction Scheme 1, to obtain derivatives in Formula (1) where Ar 1  and Ar 2  are the same may be described as a synthetic process comprising steps of:
         a) generation of a fluorinated aryl organometallic metallic reagent by the reaction of an fluorinated aryl halide with magnesium or n-butyllithium or by the substitution of an aryl hydrogen using n-butyllithium;   b) reaction of the organometallic reagent [RMgX or RLi] with an anthraquinone derivative to form a diol, wherein R is represented by Formula 2 and X may be a halogen. It is further contemplated that this reaction may be carried out in the presence of lithium chloride or zinc chloride;   c) reduction of said diol to form a DPHA derivative using either a combination of sodium hypophosphite and potassium iodide in acetic acid (U.S. Pat. No. 5,232,635 to Van Moer et al) or a solution of stannous chloride in a solution of stannous chloride in glacial acetic acid (U.S. Pat. No. 6,740,263 to Park et al).
 
wherein, A 1 , A 2 , A 3 , A 4 , A 5 , A 6 , A 7 , and A 8  represents one selected from the group consisting of hydrogen or fluorine, and B 1 , B 2 , B 4 , and B 5  represents one selected from the group consisting of hydrogen and fluorine, where at least two of these are fluorine, and B 3  represents one selected from a group consisting of hydrogen, fluorine, trifluoromethyl, and an alkoxy group with 1-10 carbons.
       

     
       
                 
         
             
             
         
      
     
     Fluorinated anthraquinones represented by Formula (4) may be purchased from commercial sources or made as described by Tannaci et al. ( J. Org. Chem.  2007, 72, 5567-5573), Mallory et al. ( J. Am. Chem. Soc.  1990, 112, 2577-2581), and Moer et al. (U.S. Pat. No. 5,232,635). 
     
       
                 
         
             
             
         
      
     
     Alternatively, symmetrical derivatives may be made via the Suzuki-Miyaura reaction or variation thereof using either a 9,10-dichloroanthracene, 9,10-dibromoanthracene, or 9,10-diiodoanthracene derivative and an aryl boronic acid, boronic ester, or trifluoroborate. Additionally, a 9,10-anthracenediboronic acid, equivalent ester, or trifluoroborate can be reacted with an aryl halide or triflate. Both pathways are as shown in Reaction Scheme 2 comprising the reaction of:
         a) a boronic acid, dialkylboronate ester, or trifluoroborate indicated by B(OR) 2 , or BF 3 K with the preferred examples being the boronic acid, the dimethyl ester of the boronic acid, or the picolinate ester of boronic acid, an aryl species, where X is either bromine, iodine, or a triflate, with the preferred example being bromine, a palladium catalyst from a large family of commercially available compounds, with the preferred examples being palladium(II) acetate, tetrakis(triphenylphosphine)palladium(0), and dichlorobis(chlorodi-tert-butylphosphine)palladium(II), a suitable base, with the preferred examples being potassium phosphate, sodium carbonate, potassium carbonate, and potassium fluoride, a suitable solvent, with the preferred examples being toluene, tetrahydrofuran, isopropanol, and 1,2-dimethoxyethane.       

     
       
                 
         
             
             
         
      
     
     Another process of the invention, as shown is Reaction Scheme 3, to produce asymmetrical anthracene derivatives, where Ar 1  and Ar 2  are not the same, may be described as a synthetic process comprising steps of:
         a) a coupling reaction between: i) a 9-substituted anthracene, where X is bromine, iodine, or triflate; ii) a fluorinated arylboronic acid, arylboronic ester, or aryltrifluoroborate, wherein the other substituents are as defined in  FIG. 2 ; iii) a palladium catalyst from a large family of commercially available compounds, with the preferred examples being palladium(II) acetate, tetrakis(triphenylphosphine)palladium(0), and dichlorobis(chlorodi-tert-butylphosphine)palladium(II); iv) a suitable base, with the preferred examples being potassium phosphate, sodium carbonate, and potassium fluoride, and a suitable solvent, with the preferred examples being toluene, tetrahydrofuran, isopropanol, and 1,2-dimethoxyethane; v) optionally including a phosphorous ligand;   b) halogenation of the 10 position of the anthracene using, for example, bromine in tetrachloromethane as illustrated; and   c) a second coupling reaction similar to the one described in part a), wherein the other substituents are as defined in  FIG. 3  with the addition of a phosphorous ligand, with the preferred examples being 2-cyclohexylphosphino-2′6′-dimethoxy-1,1′-biphenyl (S-Phos) or tris(o-tolyl)phosphine.       

     
       
                 
         
             
             
         
      
     
     Alternatively, the asymmetric derivatives of the present invention can be made by via a synthetic coupling reaction as shown in Reaction Scheme 4 containing:
         a) either a 9-haloanthracene or a 9-halo-10-arylanthracene, where the halogen is bromine or chlorine, with the preferred example being bromine and the aryl group R is described by  FIG. 3 ; b) an aryl ring with at least 3 to 4 fluorines, at least one hydrogen, where the remaining substituent can be hydrogen, fluorine, an alkoxy group, or a trifluoromethyl group; c) palladium acetate; d) 2-cyclohexylphosphino-2′6′-dimethoxy-1,1′-biphenyl (S-Phos); e) a suitable acetate solvent, with the preferred example being isopropyl acetate.       

     The production of a chemiluminescent system exhibiting a blue/violet emission spectrum with a maximum in the range of about 390 nm to less than-438 nm according to the present invention is accomplished by the combination of two solutions, A and B:
         wherein solution A comprises:   an oxalate selected from a family of substituted carbalkoxyphenyloxalates at a concentration of 10 to 30 percent by weight, with the preferred example being bis(2,4,5-trichloro-6-carbopentoxyphenyl)oxalate at a concentration of 14 to 23; percent, an anthracene of Formula 1 as described in this invention at a concentration of 0.025 to 0.5 percent by weight, with the preferred amount being 0.10 to 0.25 percent; and   a suitable solvent from a family of phthalates, benzoates, and citrates, with the preferred solvent being butyl benzoate;   wherein solution B comprises:   a solution of 70% aqueous hydrogen peroxide at a concentration of 2 to 6.5 percent of the total weight, with the preferred amount being 3 to 4 percent; and   a catalyst from a family of salicylates:   wherein said catalyst is at a concentration of 0.0015 to 0.05 percent by weight with the preferred amount being 0.005 to 0.010 percent; and   a solvent from a family of phthalates, benzoates, and citrates, with the preferred example being dimethyl phthalate, dibutyl phthalate, triethyl citrate, benzyl benzoate, butyl benzoate, propylene glycol dibenzoate, ethylhexyl diphenyl phosphate, ethylene glycol dibenzoate, and n-butyl,tri-n-hexyl citrate, or the like phthalates, benzoates and citrates. Optionally, a solvent miscible in water and most organic solvents at a concentration of 5 to 20 percent by weight, with the preferred example being tert-butanol at a concentration of 5 to 15 percent may be included.       

     Compounds which are generally suitable to catalyze the reaction between the activator and oxalate type esters are basic compounds, such as amines, hydroxides, alkoxides, carboxylic acid salts and phenolic salts. Preferred salts of carboxylic acids and phenols are derived from compounds having a pKa in the range of from about 1 to about 6 as measured in aqueous solution, for example tetrabutylammonium salicylate, sodium salicylate, ethyl-2-acetoxy salicylate, various tetraalkylammonium salicylates, lithium salicylate, lithium 5-t-butyl salicylate sodium-5-bromosalicylate, sodium-5-chlorosalicylate, and sodium-5-fluorosalicylate or the like, with the preferred catalyst being sodium salicylate. 
     EXAMPLES 
     Starting materials and solvents were purchased from Aldrich, Matrix, Synthonix, and Alfa Aesar. All of the desired compounds were analyzed via HPLC, and their spectra (absorption, chemiluminescent emission, and NMR) recorded. 
     Example 1 
     Procedure for Producing 9,10-bis(2,3,4,5,6-pentafluorophenyl)anthracene ( FIG. 1 ) 
     To a suspension of 6.25 g of 9,10-anthraquinone in 60 mL of anhydrous 1,4-dioxane, was added 0.1 mole of pentafluorophenylmagnesium bromide in 30 mL of diethyl ether prepared as described in  Organic Synthesis , Coll. Vol. 6, p. 875. The mixture was brought to a reflux and held there overnight. The reaction was quenched in a mixture of 25 mL of saturated aqueous ammonium chloride and 25 mL of water. After bringing the pH of the aqueous portion of the solution to pH 3-4 using dilute aqueous hydrochloric acid, 100 mL of ethyl acetate was added. The layers were separated, and the aqueous layer was extracted with an additional 100 mL of ethyl acetate. The combined organic extracts were dried with magnesium sulfate and concentrated. The residue was recrystallized from toluene to give 8.66 g of off-white crystals. 
     The reduction of the diol was accomplished by taking 5.44 g of 9,10-bis(pentafluorophenyl)-9,10-dihydro-9,10-anthracenediol in 50 mL of acetic acid and refluxing it with 9 g of potassium iodide and 9 g of sodium hypophosphite for 4 hours. After cooling, white crystals were filtered off. The crude product was recrystallized using a 1:1 mixture of toluene and hexane to yield 2.00 g of 9,10-bis(pentafluorophenyl)anthracene with a melting point of 337-338° C. 
     This method was used for compounds depicted in  FIGS. 1-88 . 
     Example 2 
     Symmetrically and asymmetrically substituted anthracenes can be made via Reaction Scheme 2 and Reaction Scheme 3 or a variation thereof using the procedures in the following: patents and patent applications, US 2004/0161633 A1, U.S. Pat. No. 6,815,094 B2, US, 2007/0176544 A1; literature references,  Org. Lett.  2007, 9, 4893-4896 . J. Am. Chem. Soc.  2008, 130, 1012-1016, and  J. Org. Chem.  2008, 73, 5589-5591; and references therein. 
     This method was used for the symmetrically substituted compounds depicted in  FIGS. 3 ,  6 - 8 ,  22 - 24 , and  38 - 40  and most of the asymmetrically substituted compounds or a portion thereof. 
     Example 3 
     Procedure for Producing 9-(4-methoxy-2,3,5,6-tetrafluorophenyl)-10-phenylanthracene ( FIG. 106 ) 
     This compound was made using the method depicted in Reaction Scheme 4. A flask with a magnetic stir bar was charged with 1.00 g of potassium carbonate, 0.15 g of dicyclohexylphosphinodimethoxybiphenyl (S-Phos), and 0.04 g of palladium acetate. The reaction vessel was evacuated and backfilled with argon three times. A solution of 1.29 g of 2,3,5,6-tetrafluoroanisole in 8 mL of isopropyl acetate was added via syringe, and the reaction mixture was stirred for one minute. A solution of 9-bromo-10-phenylanthracene in 4 mL in isopropyl acetate was added. The reaction mixture was heated to 80° C. and held at that temperature overnight. The reaction was filtered and the crude material purified via column chromatography on silica gel using 5% diethyl ether in heptane to yield 350 mg of a white solid with a melting point of 153-154° C. 
     This method was used to attach pentafluorophenyl, 2,3,5,6-tetrafluorophenyl, and 2,3,5,6-tetrafluoro-4-methoxyphenyl groups to a 9-haloanthracene or a 9-halo-10-arylanthracene as described in  Org. Lett.  2006, 8, 5097-5100 and references therein. 
     Example 4 
     The light output of the compounds was also tested. The process for producing chemiluminesence is described as follows;
         (A) A quantity of butyl benzoate is heated to 70° C. and purged with nitrogen gas and brought to room temperature under nitrogen. To a suitable vessel are added 85.81 parts by weight of butyl benzoate and 14.0 parts by weight of bis(2,4,5-trichloro-6-carbopentoxyphenyl)oxalate, with stirring, until the oxalate is dissolved. To the resultant solution is then added 0.19 parts by weight of the blue/violet fluorescer. The solution is allowed to cool and stored under nitrogen. The resultant solution is called Solution A.   (B) To a second vessel are added 86.7 parts by weight of dimethyl phthalate and 10.0 parts by weight of t-butyl alcohol. To this mixture are added 3.3 parts by weight of 70% hydrogen peroxide and 0.0072 parts of sodium salicylate. The resultant solution is called Solution B. Optionally, Solution B can be made by combining 96.7 parts of triethylcitrate, 0.0100 parts of sodium salicylate, and 3.3 parts of 70% hydrogen peroxide.   (C) To 4.7 parts by weight of Solution A is added 5.6 parts by weight of Solution B with thorough mixing. The result is the generation of a blue/violet chemiluminescent light.       

     The emission spectra for several of anthracene fluorescers are shown in  FIG. 661 . This figure illustrates the enhanced percentage of light in the region where the emission maximum is from about 390 nm to less than 438 nm for compounds described herein. 
     All patents and publications mentioned in this specification are indicative of the levels of those skilled in the art to which the invention pertains. All patents and publications are herein incorporated by reference to the same extent as if each individual publication was specifically and individually indicated to be incorporated by reference. 
     It is to be understood that while a certain form of the invention is illustrated, it is not to be limited to the specific form or arrangement herein described and shown. It will be apparent to those skilled in the art that various changes may be made without departing from the scope of the invention and the invention is not to be considered limited to what is shown and described in the specification and any drawings/figures included herein. 
     One skilled in the art will readily appreciate that the present invention is well adapted to carry out the objectives and obtain the ends and advantages mentioned, as well as those inherent therein. The embodiments, methods, procedures and techniques described herein are presently representative of the preferred embodiments, are intended to be exemplary and are not intended as limitations on the scope. Changes therein and other uses will occur to those skilled in the art which are encompassed within the spirit of the invention and are defined by the scope of the appended claims. Although the invention has been described in connection with specific preferred embodiments, it should be understood that the invention as claimed should not be unduly limited to such specific embodiments. Indeed, various modifications of the described modes for carrying out the invention which are obvious to those skilled in the art are intended to be within the scope of the following claims.