文献类型：专利

英文题名：Multi-environment responsiveness triblock copolymer used for optical information storage, comprises polyethylene glycol-b-polymethylacrylic acid dimethylamine ethyl ester-b-polyazobenzene tri-block copolymer

作者：ZHUANG Z;XING Y;LIN S;HE X;LIN J;ZHUANG Q;ZHU W

机构：[1]UNIV EAST CHINA SCI&TECHNOLOGY

申请号：CN102633960-A

申请日：2012-04-01

公开日：2012-08-15

语种：英文

收录：DERWENT

摘要：NOVELTY - A multi-environment responsiveness triblock copolymer comprises polyethylene glycol-b-polymethylacrylic acid dimethylamine ethyl ester-b-polyazobenzene tri-block copolymer which is obtained by polyethylene glycol-b-polymethylacrylic acid dimethylamine ethyl ester di-block copolymer triggering azo phenyl monomer. USE - A multi-environment responsiveness triblock copolymer for optical information storage (claimed). ADVANTAGE - The multi-environment responsiveness triblock copolymer has desired response to light, temperature and pH value. DETAILED DESCRIPTION - A multi-environment responsiveness triblock copolymer comprises polyethylene glycol-b-polymethylacrylic acid dimethylamine ethyl ester-b-polyazobenzene tri-block copolymer which is obtained by polyethylene glycol-b-polymethylacrylic acid dimethylamine ethyl ester di-block copolymer triggering azo phenyl monomer of formula (I). R=formula (i); and z, y=not defined. n=2-9. An INDEPENDENT CLAIM is included for a method of preparing the multi-environment responsiveness triblock copolymer comprising: (A) subjecting polyethylene glycol and methyl acrylic dimethylamine ethyl ester monomer to atom transfer radical polymerization in the presence of a solvent, catalyst and initiator at 20-60 degrees C for 1-12 hours, adding tetrahydrofuran, leaching, precipitating using n-hexane, filtering, and vacuum drying obtained filter cake to obtain polyethylene glycol polymethylacrylic acid dimethylamine ethyl ester di-block copolymer; and (B) adding solvent A and polyethylene glycol-b-polymethylacrylic acid dimethylamine ethyl ester di-block copolymer as initiator, introducing nitrogen to eliminate oxygen, adding catalyst system, heating at 20-60 degrees C for 6-24 hours, passing through neutral alumina column, eluting with tetrahydrofuran, concentrating the eluate, precipitating using diethyl ether, filtering, and vacuum drying.