CONCENTRATION-DEPENDENT FLUORESCENCE BEHAVIOR OF OXAZINE-750 AND RHODAMINE-6G IN POROUS SILICATE XEROGEL MONOLITHS

AMMER, F and PENZKOFER, A and WEIDNER, P (1995) CONCENTRATION-DEPENDENT FLUORESCENCE BEHAVIOR OF OXAZINE-750 AND RHODAMINE-6G IN POROUS SILICATE XEROGEL MONOLITHS. CHEMICAL PHYSICS, 192 (3). pp. 325-331. ISSN 0301-0104,

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Abstract

The concentration dependent fluorescence quantum efficiency phi(F) and fluorescence polarization P-F of rhodamine 6G (10(-5) 5 to 0.8 mol/dm(3)) and oxazine 750 (10(-5) to 0.01 mol/dm(3)) in porous silicate xerogel monoliths have been studied. The xerogel pores were filled with formamide. The decrease of phi(F) is due to Forster-type energy transfer to closely spaced pair quenching centers, and the decrease of P-F is caused by reorientation of emission transition dipole moments due to energy transfer from excited to unexcited molecules.

Item Type: Article
Uncontrolled Keywords: DYE-LASER; GEL; SPECTROSCOPY; ABSORPTION; MOLECULES; PROSPECTS; GLASSES;
Depositing User: Dr. Gernot Deinzer
Last Modified: 19 Oct 2022 08:38
URI: https://pred.uni-regensburg.de/id/eprint/52690

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