Fluorescence-intensity changes in organic dyes impregnated in porous glass on exposure to NO2

被引：13

作者：

Ohyama, T ^{[1
]}

Maruo, YY ^{[1
]}

Tanaka, T ^{[1
]}

Hayashi, T ^{[1
]}

机构：

[1] NTT, Integrated Informat & Energy Syst Labs, Musashino, Tokyo 1808585, Japan

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 1999年 / 59卷 / 01期

关键词：

NO2; sensor; organic dye; porous glass; fluorescence quenching;

D O I：

10.1016/S0925-4005(99)00037-4

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

To develop an NO2 sensor that can measure the NO2 concentration in the atmosphere, we studied changes in fluorescence intensities of dyes impregnated in porous glass when exposed to NO2 in N-2 as the first step. The NO2 sensing materials were Squarylium dye 1, Squarylium dye 2, and Rhodamine B. We found that fluorescence quenching by NO2 occurred even in porous glass. The fluorescence quenching (F-0/F) increased as the NO2 concentration increased in the range of 0.2-12.3 ppm, with an almost linear relationship. The minimum detectable concentration of NO2 was 0.2 ppm. (C) 1999 Elsevier Science S.A. All rights reserved.

引用

页码：16 / 20

页数：5

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