Patent ID: 8735536

Claim:
A polymer comprising a repeating unit of the formula: wherein: R a , at each occurrence, independently is selected from H and R e , wherein R e , at each occurrence, independently is selected from a) halogen, b) —CN, c) —NO 2 , d) oxo, e) —OH, f) —O—C 1-20 alkyl, g) —O—C 6-14 aryl, h) —NH 2 , i) —NH(C 1-20 alkyl), j) —N(C 1-20 alkyl) 2 , k) —N(C 1-20 alkyl)-C 6-14 aryl, l) —N(C 6-14 aryl) 2 , m) —SH, n) —S—C 1-20 alkyl, o) —S(O) 2 OH, p) —S(O) 2 —OC 1-20 alkyl, q) —S(O) 2 OC 6-14 aryl, r) —CHO, s) —C(O)—C 1-20 alkyl, t) —C(O)—C 6-14 aryl, u) —C(O)OH, v) —C(O)—OC 1-20 alkyl, w) —C(O)—OC 6-14 aryl, x) —C(O)NH 2 , y) —C(O)NH—C 1-20 alkyl, z) —C(O)N(C 1-20 alkyl) 2 , aa) —C(O)NH—C 6-14 aryl, ab) —C(O)N(C 1-20 alkyl)-C 6-14 aryl, ac) —C(O)N(C 6-14 aryl) 2 , ad) —C(S)NH 2 , ae) —C(S)NH—C 1-20 alkyl, af) —C(S)N(C 1-20 alkyl) 2 , ag) —C(S)N(C 6-14 aryl) 2 , ah) —C(S)N(C 1-20 alkyl)-C 6-14 aryl, ai) —C(S)NH—C 6-14 aryl, aj) SiH 3 , ak) —SiH(C 1-20 alkyl) 2 , al) —SiH 2 (C 1-20 alkyl), am) —Si(C 1-20 alkyl) 3 , an) a C 1-20 alkyl group, ao) a C 2-20 alkenyl group, ap) a C 2-20 alkynyl group, aq) a C 1-20 haloalkyl group, ar) a C 3-10 cycloalkyl group, as) a C 6-14 aryl group, at) a C 6-14 haloaryl group, au) a 3-12 membered cycloheteroalkyl group, and av) a 5-14 membered heteroaryl group; wherein the polymer has a degree of polymerization (n) ranging from 3 to 1,000.