Optical Sol-Gel-Based Dissolved Oxygen Sensor: Progress Towards a Commercial Instrument

被引：0
|
作者：
C.M. Mcdonagh
A.M. Shields
A.K. Mcevoy
B.D. Maccraith
J.F. Gouin
机构：
[1] Dublin City University,School of Physical Sciences
来源：
Journal of Sol-Gel Science and Technology | 1998年 / 13卷
关键词：
optical sensors; sol-gel films; dissolved oxygen;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
A dissolved oxygen sensor based on fluorescence quenching of the oxygen-sensitive ruthenium complex, [Ru(II)-tris(4,7-diphenyl-1,10-phenanthroline]2+, which has been immobilized in a porous silica sol-gel-derived film, is reported. Ormosil sensing films were fabricated using modified silica precursors such as methyltriethoxysilane (MTEOS) and ethyltriethoxysilane (ETEOS) and were dip-coated onto planar glass substrates. Tailoring of the films for dissolved oxygen (DO) sensing is described whereby sensor response is optimized by maximizing film hydrophobicity by the use of the modified precursors. Sensor performance parameters such as limit of detection and sensor resolution are reported. Issues such as dye leaching and photobleaching are discussed. Progress towards a commercial instrument is reported.
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页码：207 / 211
页数：4
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