Patent ID: 8378064

Claim:
A polymer selected from the group consisting of: wherein: n is an integer from 100 to 200,000; X is O; R 1 is H; R 2 is selected from the group consisting of COOR′, CONHR′, and SR′, each occurrence of R′ is independently selected from the group consisting of H, Na + , an alkenyl, an alkynyl, COCH 3 , CH 2 CH 2 OH, CH 2 CH 2 OR″, an amino acid, a small or large peptide, COCCH 3 ═CH 2 , COCH═CH 2 , CH 2 CO 2 H, CH 2 CH 2 CO 2 H, CH 2 CH 2 SH, CH 2 CH 2 SR″ and (CH 2 CH 2 O) n′ R′″, n′ is an integer from 1 to 2000; each occurrence of R″ is independently selected from the group consisting of trityl, 4-methyltrityl and 2-pyridyl; and each occurrence of R′″ is independently selected from the group consisting of H, an alkyl, an alkenyl, an alkynyl, COCCH 3 ═CH 2 , COCH═CH 2 , CH 2 CHO, CH 2 CH 2 CHO, CO 2 H, CO 2 R″″, CH 2 CO 2 H, CH 2 CH 2 CO 2 H, CH 2 NH 2 , CH 2 NHR″″, CH 2 N(R″″) 2 , CH 2 CH 2 NH 2 , CH 2 CH 2 NHR, CH 2 CH 2 N(R″″) 2 , SH, CH 2 CO 2 R″″, and CH 2 CH 2 CO 2 R″″, and each occurrence of R″″ is independently selected from the group consisting of maleimide, an amino acid, a small or large peptide, phosphate, sulfate, choline, and an activated ester.