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Proceedings Paper

Optical pH sensor based on sol-gel-doped new luminescent dye
Author(s): Aleksandra Lobnik; Karlheinz Niederreiter; Georg Uray
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Paper Abstract

The sol-gel process is an exciting new technology that enables the production of gel glasses and ceramic materials at room temperature. Sol-gel technology offers simple methods for manipulation of the structure, configuration, composition and chemical characteristics of organic matrices. A novel longwave luminescent dye based on the europium luminescence initiated by a covalently bonded antenna fluorophore was designed, synthesized and characterized. The dye was successfully entrapped into various sol-gel and ormosil matrices and consequent optical- , leaching- and light fastness-properties were tested. Finally, sensor layer based on TMOS doped with Eu3+- complex and bromothymol blue was found to be most appropriate for purposes of sensing pH over the range 5-10.

Paper Details

Date Published: 23 November 1999
PDF: 8 pages
Proc. SPIE 3856, Internal Standardization and Calibration Architectures for Chemical Sensors, (23 November 1999); doi: 10.1117/12.371297
Show Author Affiliations
Aleksandra Lobnik, Univ. of Maribor (Slovenia)
Karlheinz Niederreiter, Karl-Franzens-Univ. Graz (Austria)
Georg Uray, Karl-Franzens-Univ. Graz (Austria)

Published in SPIE Proceedings Vol. 3856:
Internal Standardization and Calibration Architectures for Chemical Sensors
Ronald E. Shaffer; Radislav A. Potyrailo, Editor(s)

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