Biotin α-end-functionalized gradient glycopolymers synthesized by RAFT copolymerization

被引:37
作者
Gody, Guillaume [1 ,2 ]
Boullanger, Paul [2 ]
Ladaviere, Catherine [1 ]
Charreyre, Marie-Therese [1 ]
Delair, Thierry [1 ]
机构
[1] Ecole Normale Super Lyon, Unite Mixte CNRS Biomerieux, F-69364 Lyon 7, France
[2] UCBL, CNRS, Lab Chim Organ 2, UMR 5622, F-69616 Villeurbanne, France
关键词
biotin; copolymerization; glycopolymer; matrix-assisted laser desorption/ionization mass spectrometry (MALDI MS); reversible addition fragmentation chain transfer (RAFT);
D O I
10.1002/marc.200700768
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Biotinylated gradient glycopolymers have been synthesized via RAFT copolymerization of an acrylamide derivative of galactose with N-acryloylmorpholine in the presence of a biotin CTA. The polymerization was controlled with a linear increase in molecular weights up to 80% conversion. Copolymer chains have a gradient microstructure with an increasing proportion of galactose units towards the omega chain end. The presence of the biotin ligand at the a end of the chains was confirmed by H-1 NMR and MALDI-ToF MS. This strategy based on the use of a biotin-CTA instead of a post-polymerization labelling of the chains resulted in a high percentage of alpha-functionalized chains (92-95%). Such alpha-end-functionalized glycopolymer chains may interact with streptavidin-modified surfaces.
引用
收藏
页码:511 / 519
页数:9
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