Dye-doped organically modified silica glass for fluorescence based carbon dioxide gas detection
- 1 January 1998
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in The Analyst
- Vol. 123 (11) , 2373-2376
- https://doi.org/10.1039/a805803b
Abstract
The sol–gel process was used to prepare organically modified silica glass in which the fluorescent pH-sensitive reagent 1-hydroxypyrene-3,6,8-trisulfonate is entrapped. An ion-pair approach was used to incorporate the hydrophilic dye in the hydrophobic glass. Good sensitivity to gas phase carbon dioxide was observed in the 0–20% range, with rapid response. A solid-state optical sensor device is described which could lead to thin film waveguide sensors suitable for mass production.Keywords
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