A polymer comprising those selected from the group consisting of at least one of Formula (I), Formula (II), or mixtures thereof wherein each R1 to R10 is independently hydrogen, alkyl, aryl, alkoxy, halogen, arylalkyl, cyano, or nitro providing that R1 and R2 exclude halogen, nitro and cyano;...http://www.google.com/patents/US20070238851?utm_source=gb-gplus-sharePatent US20070238851 - Semiconductor polymers
