Patent ID: 7982055

Claim:
A heterocyclic monomer compound according to the following formula: wherein X is S or Se, Y is S or Se, wherein one or both of X and Y is Se, and R is a substituent group selected from the group consisting of hydroxyl, alkyl arylalkyl, alkenyl, perfluoroalkyl, perfluororaryl, aryl, alkoxy, cycloalkyl, cycloalkenyl, alkanoyl, alkylthio, aryloxy, alkylthioalkyl, alkynyl, alkylaryl, arylalkyl, amido, alkylsulfinyl, alkoxyalkyl, alkylsulfonyl, aryl, arylamino, diarylamino, alkylamino, dialkylamino, arylarylamino, arylthio, heteroaryl, arylsulfinyl, alkoxycarbonyl, arylsulfonyl, carboxyl, halogen, nitro, cyano, sulfonic acid, alkyl substituted with one or more sulfonic acid, esters of sulfonic acid, phosphoric acid, esters of phosphoric acid, carboxylic acid, esters of carboxylic acid, halo, amino, nitro, hydroxyl, cyano and epoxy moieties, and phenyl substituted with one or more sulfonic acid, esters of sulfonic acid, phosphoric acid, esters of phosphoric acid, carboxylic acid, esters of carboxylic acid, halo, amino, nitro, hydroxyl, cyano and epoxy moieties, in which one or more non-adjacent CH 2 groups in alkyl is optionally replaced, independently, with —O—, —S—, —NH—, —NR′—, —SiR′R″—, —CO—, —COO—, —OCO—, —OCO—O—, —S—CO—, —CO—S—, —CH═CH— or —C:C— in such a manner that O and/or S atoms are not linked directly to one another, each of R′ and R″, independently, being H, aryl, or alkyl with 1 to 12 C-atoms.