Synthesis and MALDI-TOF Characterization of β-CD Core ATRP Initiators and RAFT Chain Transfers with Different Degrees of Substitution  

作　　者：Yan Xin Hong Wang Bo-wen Liu 袁金颖 

机构地区：[1]Key Lab of Organic Optoelectronics and Molecular Engineering of Ministry of Education, Department of Chemistry,Tsinghua University

出　　处：《Chinese Journal of Polymer Science》2015年第1期36-48,共13页高分子科学（英文版）

基　　金：financially supported by the National Natural Science Foundation of China(Nos.21174076 and 21374053)

摘　　要：In this paper, three different kinds of β-CD derivatives were synthesized as atom transfer radical polymerization（ATRP） initiator or reversible addition-fragmentation chain transfer polymerization（RAFT） chain transfers. The degree of substitution for each derivative was carefully characterized through 1H-NMR, 13C-NMR spectroscopy and matrix-assisted laser desorption/ionization time of flight mass spectrometry（MALDI-TOF-MS）. The factors influencing the degree of substitution were discussed. Moreover, the comparison between ATRP and RAFT was shown in the polymerization of Nisopropyl acrylamide（NIPAM）.In this paper, three different kinds of β-CD derivatives were synthesized as atom transfer radical polymerization（ATRP） initiator or reversible addition-fragmentation chain transfer polymerization（RAFT） chain transfers. The degree of substitution for each derivative was carefully characterized through 1H-NMR, 13C-NMR spectroscopy and matrix-assisted laser desorption/ionization time of flight mass spectrometry（MALDI-TOF-MS）. The factors influencing the degree of substitution were discussed. Moreover, the comparison between ATRP and RAFT was shown in the polymerization of Nisopropyl acrylamide（NIPAM）.

关 键 词：β-CD core star polymers MALDI-TOF ATRP initiators RAFT chain transfers GPC 

分 类 号：O631.5[理学—高分子化学]