Patent ID: 6056893
Filing Date: 2000-05-02
Classification: C07C,C09K

Abstract:
A dopant compound of the formula IR.sup.1 -(A.sup.1 -Z.sup.1).sub.n -A.sup.2 -W Iin whichW is ##STR259## X is --C.dbd.C--Y or --CH.dbd.CH--Y, Y isa) H or an alkyl or alkenyl radical having 1-15 carbon atoms which are unsubstituted, monosubstituted by CN or CF.sub.3 or monosubstituted to perhalo-substituted by halogen, where one or more CH.sub.2 groups in these radicals are optionally replaced, in each case independently of one another, by --O--, --CO-- or --CO--O-- in such a way that heteroatoms are not linked directly to one another, orb) a phenylene radical in which one or two CH groups are optionally replaced by N and which is unsubstituted or substituted one or more times by CN, Cl or F or by an alkyl, alkenyl or alkoxy radical having 1 to 8 carbon atoms, in which one or more H atoms are optionally replaced by F atoms,R.sup.a is a straight-chain alkyl radical having 1-15 carbon atomsR.sup.1 is H or an alkyl or alkenyl radical having 1-15 carbon atoms which is unsubstituted, monosubstituted by CN or CF.sub.3 or monosubstituted to perhalosubstituted by halogen, where one or more CH.sub.2 groups in these radicals may optionally replaced, in each case independently of one another by --O--, --S--, --CO--, --CO--O--, --O--CO-- or --O--CO-- --O-- in such a way that heteroatoms are not linked directly to one another,A.sup.1 and A.sup.2, in each case independently of one another, are aa) trans-1,4-cyclohexylene radical, in which one or more nonadjacent CH.sub.2 groups are optionally replaced by --O-- and/or --S--,b) 1,4-cyclohexenylene radical,c) 1,4-phenylene radical, in which one or two CH groups are optionally replaced by N,d) radical from the group consisting of 1,4-bicyclo[2.2.2]octylene, piperidine-1,4-diyl, naphthalene-2,6-diyl, decahydronaphthalene-2,6-diyl and 1,2,3,4-tetrahydronaphthalene-2,6-diyl, where the radicals a), b) and c) are optionally substituted by CN, Cl, F or an alkyl or alkenyl radical having 1 to 5 carbon atoms,Z.sup.1 is --CO--O--, --O--CO--, --CH.sub.2 O--, --O--CH.sub.2 --, --CH.sub.2 CH.sub.2, --CH.dbd.CH--, --C--C-- or a single bond,andn is 0, 1, 2 or 3,with the proviso that, in the case where A.sup.2 is unsubstituted 1,4-phenylene and X is C.tbd.CH, Alis not 1,4-phenylene in which one or two CH groups are optionally replaced by N.