期刊
MACROMOLECULAR RAPID COMMUNICATIONS
卷 37, 期 23, 页码 1960-1965出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/marc.201600360
关键词
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资金
- MEXT in Japan [A/23245046, S/15H05758]
- Chinese Scholarship Council
- Grants-in-Aid for Scientific Research [15H05758, 25000003] Funding Source: KAKEN
Instead of the reported photoinduced lower critical solution temperature (LCST) phase transition behavior in ionic liquids (ILs) achieved by photofunctional polymers, this study reports the facile photoinduced LCST phase behavior of nonfunctionalized polymers (poly(benzyl methacrylate) (PBnMA) and poly(2-phenylethyl methacrylate) (PPhEtMA)) in mixed ILs (1,3-dimethylimidazolium bis(trifluoromethanesulfonyl) amide; [C(1)mim][NTf2] and a newly designed functionalized IL containing an azobenzene moiety (1-butyl-3-(4-phenylazobenzyl)imidazolium bis(trifluoromethanesulfonyl) amide; [Azo][NTf2])) as a small-molecular photo trigger. Interestingly, the length of the alkyl spacer between the ester and aryl groups, which is the only structural difference between the two polymers, leads to two different photoresponsive LCST phase transition behaviors. On the basis of spectroscopic studies, the different phase transition behaviors of PBnMA and PPhEtMA may attribute to the different cooperative interactions between the polymers and [C(1)mim][NTf2].
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