Optical chemical sensing based on thin films of Prussian Blue

被引：34

作者：

Koncki, R

Wolfbeis, OS

机构：

[1] Univ Warsaw, Dept Chem, PL-02093 Warsaw, Poland

[2] Univ Regensburg, Inst Analyt Chem Chemo & Biosensors, D-93040 Regensburg, Germany

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 1998年 / 51卷 / 1-3期

关键词：

Prussian Blue films; optical sensing; redox sensitivity; pH-sensitivity;

D O I：

10.1016/S0925-4005(98)00287-1

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The potential applications of films of Prussian Blue for optical chemical sensors are investigated. The films are chemically deposited on a non-conductive support, mechanically stable, thin, homogenous and optically transparent. The maximum of the absorption is observed at 720 nm and is fully compatible with semiconductor light sources. Strong reductants cause discoloration of the him. This effect can be used for optical determination of reductants such as ascorbic acid. The film is also suitable for optical determination of pH because the absorption spectra undergo reversible changes in the pH 5-9 range. (C) 1998 Elsevier Science S.A. All rights reserved.

引用

页码：355 / 358

页数：4

共 11 条

[1] Humidity-sensitive optical absorption of Co3O4 film [J].