PHOTOPHYSICAL PROPERTIES OF RUTHENIUM POLYPYRIDYL PHOTONIC SIO2 GELS

被引：87

作者：

CASTELLANO, FN ^{[1
]}

HEIMER, TA ^{[1
]}

TANDHASETTI, MT ^{[1
]}

MEYER, GJ ^{[1
]}

机构：

[1] JOHNS HOPKINS UNIV,DEPT CHEM,BALTIMORE,MD 21218

来源：

CHEMISTRY OF MATERIALS | 1994年 / 6卷 / 07期

关键词：

D O I：

10.1021/cm00043a028

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 photophysical properties of Ru(bpy)3(PF6)2 and cis-Ru(bpy)2(CN)2 (where bpy = 2,2-bipyridine) doped into monolithic SiO2 aquo and alco gels prepared by sol-gel processing techniques is described. The excited-state properties of the dopants are dramatically altered by the gel matrix. The photoluminescence emission energy and quantum yield of the dopants increase through the sol-to-gel transition. Steady-state fluorescence polarization measurements reveal significant anisotropy. Time-resolved fluorescence decays observed from these photonic materials are complex. Evidence for a bimodal distribution of dopant sites is obtained from modeling the emission decays and from application of the exponential series method. Implications of these results for molecular photonic applications are discussed.

引用

页码：1041 / 1048

页数：8

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