Reversible and efficient proton dissociation of spirobenzopyran-functionalized poly(N-isopropylacrylamide) in aqueous solution triggered by light irradiation and temporary temperature rise

被引：46

作者：

Sumaru, K

Kameda, M

Kanamori, T

Shinbo, T

机构：

[1] Natl Inst Adv Ind Sci & Technol, Res Ctr Adv Bion, Tsukuba, Ibaraki 3058565, Japan

[2] Natl Inst Adv Ind Sci & Technol, Inst Mat & Chem Proc, Tsukuba, Ibaraki 3058565, Japan

来源：

MACROMOLECULES | 2004年 / 37卷 / 21期

关键词：

D O I：

10.1021/ma0487249

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The reversible proton dissociation in an aqueous solution of spirobenzopyran chromophore introduced in poly(N-isopropylacrylamide) (pNIPAAm) which was triggered by both light irradiation and temporary temperature rise was discussed. It was observed that on irradiation NIPAAm aqueous solution showed changes in specific conductance and absorbance. It was found that isomerization of McH to closed ring form was caused by the thermally induced dehydration of pNIPAAm main chain. The results show that pNIPAAm as a side chain exhibits photoresponsive proton dissociation in an acidic aqueous solution.

引用

页码：7854 / 7856

页数：3

共 8 条

[1] PHOTOCHROMISM OF A SURFACE-ACTIVE SPIROBENZOPYRAN MOIETY IN DIOXANE WATER MIXTURES AND SELF-ASSEMBLED SURFACTANT AGGREGATES [J].