An optical fibre pH sensor based on dye doped mesostructured silica

被引：51

作者：

Miled, OB ^{[1
]}

Grosso, D

Sanchez, C

Livage, J

机构：

[1] Fac Sci Monastir, Dept Phys, Monastir, Tunisia

[2] Univ Paris 06, Lab Chim Mat Condensee, UMR 7574, F-75252 Paris, France

来源：

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 2004年 / 65卷 / 10期

关键词：

mesostructured silica; optical fibre pH sensor; evanescent wave; dyes doped;

D O I：

10.1016/j.jpcs.2004.05.005

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

This paper describes the synthesis and optical pH sensing properties of a pH indicator dye activated mesostructured silica coated optical fibre. The pH-sensitive dye bromothymol blue was incorporated into the mesostructure sol precursor and thin films/coatings were used for pH-sensing applications without prior removal of the surfactant. The pH sensitivity range and operating wavelength were analysed by absorption measurements on layer dip-coated on glass slides. The pH sensing properties of coated optical fibre were tested by evanescent wave method. Experiments were carried out by using a series of solutions of known pH. No leaching was observed (except at very high pH) and an excellent reversibility was obtained between pH = 2 and 5. (C) 2004 Elsevier Ltd. All rights reserved.

引用

页码：1751 / 1755

页数：5

共 22 条

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