Effect of PMMA impregnation on the fluorescence quantum yield of sol-gel glasses doped with quinine sulfate

Authors
Meneses-Nava, MA Barbosa-Garcia, O Diaz-Torres, LA Chavez-Cerda, S Torres-Cisneros, M King, TA
Citation
Ma. Meneses-nava et al., Effect of PMMA impregnation on the fluorescence quantum yield of sol-gel glasses doped with quinine sulfate, OPT MATER, 17(3), 2001, pp. 415-418
Citations number
14
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
OPTICAL MATERIALS
ISSN journal
09253467 → ACNP
Volume
17
Issue
3
Year of publication
2001
Pages
415 - 418
Database
ISI
SICI code
0925-3467(200108)17:3<415:EOPIOT>2.0.ZU;2-N
Abstract
The fluorescence quantum yield of quinine sulfate: in sol-gel and PMMA impr egnated glasses is measured. The observed quantum yield improvement in the sol-gel matrix, compared to ethanol, is interpreted as a reduction of nonra diative relaxation channels by isolation of the molecules by the cage of th e glass. PMMA impregnated sol-gel glasses show an extra improvement of the fluorescence yield, which is interpreted as a reduction of the free space a nd the rigid fixation of the molecules to the matrix. (C) 2001 Elsevier Sci ence B.V. All rights reserved.