首页 | 本学科首页   官方微博 | 高级检索  
     


Fluorescence spectroscopic studies on the multicomponent system coumarin 1/fluorescein/rhodamine B in ethanol
Authors:Pihong Zhao  Silvio Rodriguez
Affiliation:(1) Lawrence Livermore National Laboratory, Chemistry and Materials Science Directorate, 94550 Livermore, California;(2) Chemistry Department, University of the Pacific, 95211 Stockton, California
Abstract:
The steady-state fluorescence spectra of the three-component system coumarin 1/fluorescein/rhodamine B in 95% ethanol were studied at room temperature. In the appropriate concentration ranges, upon the excitation of coumarin 1 at 377 nm, the ternary dye mixture solution emitted simultaneously with three bands centered at 443, 528, and 575 nm, respectively. The analysis of the data seems to indicate that there is significant energy transfer between these three dyes and that the main contribution corresponds to the Förster nonradiative mechanism. The critical transfer distances between each two of the three components were calculated to be 48.4 Å for the coumarin 1/fluorescein pair, 42.2 Å for the coumarin 1/rhodamine B pair, and 65.5 Å between fluorescein and rhodamine B dyes. The system can potentially be used to obtain three primary outputs at different wavelengths in a dye laser system.
Keywords:Coumarin 1  fluorescein  rhodamine B  fluorescence  non-radiative energy transfer  three-component system
本文献已被 SpringerLink 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号