Rhodamine 6G impregnated porous silica: A photoluminescence study

被引：13

作者：

Anedda, A

Carbonaro, CM

Clemente, F

Corpino, R

Ricci, PC

Rossini, S

机构：

[1] Univ Cagliari, Dipartimento Fis, I-09042 Monserrato, Italy

[2] INMF, UdR Cagliari, I-09042 Monserrato, Italy

来源：

MATERIALS SCIENCE & ENGINEERING C-BIOMIMETIC AND SUPRAMOLECULAR SYSTEMS | 2005年 / 25卷 / 5-8期

关键词：

porous silica; dye; photoluminescence; hybrids;

D O I：

10.1016/j.msec.2005.06.033

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The optical properties of rhodamine 6G dye confined in porous silica are reported. Photoluminescence properties of embedded chromophores in mesoporous hosts can be affected by the surrounding matrices: shifts in emission spectra and variations of photoluminescence quantum yield are found as compared to dye solutions. Host-guest interactions are studied here by varying both SiO2 xerogels porosity and the dye concentration. Comparing samples obtained by impregnating matrices with 5.4 and 18.2 nm pores with solutions having concentrations in the rhodamine 6G high laser gain, matrices with 5.4 nm pores impregnated with a dye concentration of 5 x 10(-4) M are found to be the most stable and efficient in the examined range. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：641 / 644

页数：4

共 22 条

[1] Raman investigation of surface OH-species in porous silica [J].