Optical pH sensor based on sol-gel-doped new luminescent dye

Aleksandra Lobnik; Karlheinz Niederreiter; Georg Uray

doi:10.1117/12.371297

23 November 1999 Optical pH sensor based on sol-gel-doped new luminescent dye

Aleksandra Lobnik, Karlheinz Niederreiter, Georg Uray

Proceedings Volume 3856, Internal Standardization and Calibration Architectures for Chemical Sensors; (1999) https://doi.org/10.1117/12.371297
Event: Photonics East '99, 1999, Boston, MA, United States

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.

Citation Download Citation

Aleksandra Lobnik, Karlheinz Niederreiter, and Georg Uray "Optical pH sensor based on sol-gel-doped new luminescent dye", Proc. SPIE 3856, Internal Standardization and Calibration Architectures for Chemical Sensors, (23 November 1999); https://doi.org/10.1117/12.371297

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