Patent ID: 7728091

Claim:
A polymer comprising one or more of a unit having the formula: wherein: each of a, b and c is an integer of zero or more and a+b+c equals at least 3; each of X 1 , X 2 , and X 3 are the same or different and is an electron pair, a chalcogen, halogen, a Lewis acid, a metal ion, an ylide, an alkoxy, an azide, an alkyl or an alkyl halide; each of R 1 , R 4 , and R 7 are the same or different and is a member selected from the group consisting of: a secondary alkyl; a tertiary alkyl; an alkyl substituted with cycloalkyl, trialkylsilyl, aryl or heteroaryl; an aryl; a heteroaryl; a cycloalkyl; and a heterocycloalkyl, wherein the member comprises at least 3 carbon atoms, heteroatoms if present are selected from —O—, —S—, and —N—, said alkyl, cycloalkyl, heterocycloalkyl, aryl and heteroaryl moieties are optionally substituted with halogen and alkoxy, and said aryl, heteroaryl, cycloalkyl and heterocycloalkyl moieties are optionally substituted with alkyl and alkyl halide; and each of R 2 , R 3 , R 5 , R 6 , R 8 and R 9 are the same or different and is a member selected from the group consisting of: hydrogen; a primary, secondary, or tertiary alkyl; an alkyl substituted with cycloalkyl, trialkylsilyl, aryl or heteroaryl; an aryl; a heteroaryl; a cycloalkyl; and a heterocycloalkyl; wherein heteroatoms if present, are selected from —O—, —S—, and —N—, said alkyl, cycloalkyl, heterocycloalkyl, aryl and heteroaryl moieties are optionally substituted with halogen and alkoxy, and said aryl, heteroaryl, cycloalkyl and heterocycloalkyl moieties are optionally substituted with alkyl and alkyl halide.