Thermosensitivity and luminescent properties of new tetraphenylethylene derivatives bearing peripheral oligo(ethylene glycol) chains

被引：23

作者：

Yin, Xiuxiu ^{[1
]}

Meng, Fanxing ^{[1
]}

Wang, Liyan ^{[1
]}

机构：

[1] Jilin Univ, Coll Chem, State Key Lab Supramol Struct & Mat, Changchun 130012, Peoples R China

来源：

JOURNAL OF MATERIALS CHEMISTRY C | 2013年 / 1卷 / 41期

基金：

中国国家自然科学基金;

关键词：

AGGREGATION-INDUCED EMISSION; N-ISOPROPYLACRYLAMIDE; RESPONSIVE POLYMERS; WATER; POLY(N-ISOPROPYLACRYLAMIDE); TRANSITION; DENDRIMERS;

D O I：

10.1039/c3tc31482k

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A class of new compounds consisting of a tetraphenylethene (TPE) core and hydrophilic peripheral oligo(ethylene glycol) chains was synthesized. These newly synthesized compounds showed aggregation-induced emission (AIE) nature which originated from the TPE core, and their peripheral oligo(ethylene glycol) chains impart water-solubility for the whole molecules. These compounds exhibit a lower critical solution temperature behavior in water. The phase transition temperature of TPE derivatives increases with the increase in the length of oligo(ethylene glycol) chains. By taking advantage of the AIE properties and thermosensitivity, these compounds are able to sense temperature by showing different emission intensities. When being heated above its phase-transition temperature, these compounds start to aggregate, which results in the restricted intramolecular rotation of the TPE moiety. Consequently, the aqueous solutions of these compounds show a stronger fluorescence. The temperature-induced fluorescence change is highly reversible.

引用

页码：6767 / 6773

页数：7

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