EVANESCENT SENSING IN DOPED SOL-GEL GLASS-FILMS

被引：80

作者：

LEE, JE ^{[1
]}

SAAVEDRA, SS ^{[1
]}

机构：

[1] UNIV ARIZONA,DEPT CHEM,TUCSON,AZ 85721

来源：

ANALYTICA CHIMICA ACTA | 1994年 / 285卷 / 03期

关键词：

ATTENUATED TOTAL REFLECTANCE; COLORIMETRY; BROMOPHENOL BLUE; INDICATORS; POROUS GLASS FILMS; SOL-GEL METHOD;

D O I：

10.1016/0003-2670(94)80064-2

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Bromophenol blue, a pH indicator, was entrapped in porous glass films prepared by the sol-gel method. The colorimetric response of the films to pH was assessed visibly and by attenuated total reflectance spectrometry. The entrapped indicator was nonleachable and responded to solution pH changes in a reversible manner. The immobilization of indicator molecules in porous sol-gel films appears to be a particularly promising approach to optical waveguide sensor development.

引用

页码：265 / 269

页数：5

共 19 条

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