New NIR dyes for ammonia sensing

被引:5
作者
Simon, P
Landl, M
Breza, M
Kvasnik, F
机构
[1] Slovak Univ Technol Bratislava, Fac Chem & Food Technol, Dept Chem Phys, SK-81237 Bratislava, Slovakia
[2] Univ Manchester, Dept Instrumentat & Analyt Sci, Manchester M60 1QD, Lancs, England
来源
SENSORS AND ACTUATORS B-CHEMICAL | 2003年 / 90卷 / 1-3期
关键词
ammonia; NIR dyes; synthesis; sensor; sensing agent;
D O I
10.1016/S0925-4005(03)00015-7
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
Three series of new cyanine dyes were synthesised and the Vis-NIR spectra of the dyes were measured and interpreted by semi-empirical methods of quantum chemistry. As a basic building block for the synthesis, 4-(dimethylaminomethylene)-5-oxo-2-furfurylidenedimethyliminium perchlorate I was used. The dyes were prepared by condensing I with appropriate salts. The tests for sensitivity to ammonia have shown that the series of mono-substituted dyes III are reversibly sensitive to ammonia in ethanol solutions. The dyes exhibit a peak at 620680 nm arising from the interaction with ammonia and, hence, these dyes are promising as chemical transducers for distributed fibre-optic ammonia sensors. (C) 2003 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:9 / 14
页数:6
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