Patent ID: 8753426

Claim:
A polymeric material comprising repeating units of the following Formulae I-III: wherein: Formula I can be connected to Formula II or III, but can not be connected to itself; Formula II can be connect to Formula I or III, but can not be connected to itself; and Formula III can be connected to Formula I or II or itself, wherein: Ar 1 is: a) a tetravalent arylene group having 6 to 24 carbon atoms which is unsubstituted or substituted with at least one substituent selected from the group consisting of C 1 -C 10 alkyl, C 1 -C 10 haloalkyl, C 1 -C 10 alkoxy, and C 1 -C 10 haloalkoxy; b) a tetravalent C 4 -C 24 heteroarylene, which is unsubstituted or substituted with at least one substituent selected from the group consisting of C 1 -C 10 alkyl, C 1 -C 10 haloalkyl, C 1 -C 10 alkoxy, and C 1 -C 10 haloalkoxy; or c) two or more of Ar 1 are fused together to form a fuse ring or are covalently bonded to each other via a functional group selected from the group consisting of O, S, C(═O), CH(OH), S(═O) 2 , Si(CH 3 ) 2 , (CH 2 ) m , (CF 2 ) n , C(CF 3 ) 2 , and C(═O)NH, wherein m is an integer from 1 to 10, and n is an integer from 1 to 10; Ar 2 is: a) a C 6 -C 24 trivalent arylene group; b) a C 4 -C 24 trivalent heteroarylene, which is unsubstituted or substituted with at least one substituent selected from the group consisting of C 1 -C 10 alkyl, C 1 -C 10 haloalkyl, C 1 -C 10 alkoxy, and C 1 -C 10 haloalkoxy; or c) two or more of Ar 2 are joined together to form a fused ring or are covalently bonded to each other via a functional group selected from the group consisting of O, S, C(═O), CH(OH), S(═O) 2 , Si(CH 3 ) 2 , (CH 2 ) m , (CF 2 ) n , C(CF 3 ) 2 , and C(═O)NH, wherein m is an integer from 1 to 10, and n is an integer from 1 to 10, wherein Ar 1 and Ar 2 can be identical or different arylene or heteroarylene ring structures relative to each other; Ar 1 ′ is a divalent group derived from Ar 1 ; Ar 1 ″ is a trivalent group derived from Ar 1 ; and X and Y are identical or different from each other, and are selected from O, S, NH, and NR, wherein R is a substituted or un-substituted C 1 -C 10 alkyl or C 1 -C 10 alkoxy, or a substituted or un-substituted C 6 -C 20 aryl group, or a substituted or un-substituted C 4 - 20 heteroaryl group.