A novel fluorescent poly(pyridine-imide) acid chemosensor

被引：51

作者：

Wang, Kun-Li ^{[1
]}

Liou, Wun-Tai ^{[1
]}

Liaw, Der-Jang ^{[2
]}

Chen, Wen-Tung ^{[3
]}

机构：

[1] Natl Taipei Univ Technol, Dept Chem Engn & Biotechnol, Taipei 106, Taiwan

[2] Natl Taiwan Univ Sci & Technol, Dept Chem Engn, Taipei 106, Taiwan

[3] TTRI, Dept Raw Mat & Yarn Format, Taipei 23674, Taiwan

来源：

DYES AND PIGMENTS | 2008年 / 78卷 / 02期

关键词：

pyridine; protonation; triphenylamine; chemosensor; polyimide;

D O I：

10.1016/j.dyepig.2007.10.015

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

A novel diamine containing heterocyclic pyridine and triphenylamine substituents namely, 4-(4-triphenylamine)-2,6-bis(4-aminophenyl)pyridine was synthesized via the Chichibabin reaction and reduction. The diamine was used in the preparation of poly(pyridine-imide) by direct polycondensation with 4,4'-hexafluoroisopropylidenediphthalic anhydride in N-methyl-2-pyrrolidinone. The poly(pyridine-imide) was converted into a lightly colored, optically transparent, flexible and tough polyimide film which exhibited good thermal stability (T-d(10) = 538 degrees C in air and high glass transition temperature (T-g = 342 degrees C; the polyimide film had a tensile strength of 71 MPa and a tensile modulus of 2.2 Gpa. The UV-vis absorption cutoff at 400 nm and fluorescence at similar to 600 nm following protonation with acid, enable the film to act as an "off-on " fluorescent switcher for acids. (c) 2007 Published by Elsevier Ltd.

引用

页码：93 / 100

页数：8

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