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

被引：40

作者：

AMMER, F

PENZKOFER, A

WEIDNER, P

机构：

[1] Naturwissenschaftliche Fakultät II-Physik, Universität Regensburg

来源：

CHEMICAL PHYSICS | 1995年 / 192卷 / 03期

关键词：

D O I：

10.1016/0301-0104(94)00388-Q

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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.

引用

页码：325 / 331

页数：7

共 42 条

[1] THE NATURE OF THE SILICA CAGE AS REFLECTED BY SPECTRAL CHANGES AND ENHANCED PHOTOSTABILITY OF TRAPPED RHODAMINE-6G [J].