Covalently cross-linked multilayer thin films composed of diazoresin and brilliant yellow for an optical pH sensor

被引：13

作者：

Egawa, Yuya ^{[1
]}

Hayashida, Ryosuke ^{[1
]}

Anzai, Jun-ichi ^{[1
]}

机构：

[1] Tohoku Univ, Grad Sch Pharmaceut Sci, Sendai, Miyagi 9808578, Japan

来源：

POLYMER | 2007年 / 48卷 / 06期

关键词：

diazoresin; layer-by-layer; pH sensor;

D O I：

10.1016/j.polymer.2007.01.065

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 multilayered thin films composed diazoresin (DR) and brilliant yellow (BY) were fabricated by a layer-by-layer (LbL) deposition technique, and the ionic bonds between diazonium ion in DR and sulfonate residues in BY were converted to covalent bonds by UV light irradiation. The cross-linking between BY and DR prevented BY from desorption even in a pH 13 solution. The cross-linked (DR/BY)(10)DR film exhibited pH-dependent absorption spectra in pH 9-13, and the response was repeatable and quick. The pH response time of the films was within a few seconds upon change from pH 9.0 to 13.0, and ca. 40 s upon change from pH 13.0 to 9.0. (c) 2007 Elsevier Ltd. All rights reserved.

引用

页码：1455 / 1458

页数：4

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