Acta Photonica Sinica, Volume. 40, Issue 7, 1091(2011)
Influence of SiO2 Nanoparticles to Fluorescence Spectra of EthanolRhodamine 6G Solutions
SiO2 nanoparticles with eight different concentrations were doped in the Rhodanmine 6Gethanol solutions(3×10-4 M and 1×10-4 M).The influence of SiO2 nanoparticles to the fluorescence spectra of R6Gethanol solutions were investigated. The results shows:1)when the concentrations of SiO2 within in the range of n1~n4(1012~1010/mL), the fluorescence spectra at 549 nm were well enhanced, but the fluorescence peaks at 570 nm was obviously quenched and the peaks have a read shift; 2) when the concentrations of SiO2 within in the range of n5~n8(109~107/mL),the fluorescence spectra at 549 nm were not enhanced significantly, but the fluorescence peaks at 570 nm was obviously enhanced, the enhancement factors can get to 10%~20%, and the peaks do not have a red shift. The reasons of the fluorescence enhancing or quenching are relative to the scattering of the nanoparticles to the luminescence and the nonfluorescent Hdimers or fluorescent Jdimers of R6G moleculars.
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YANG Ailing, ZHAO Weina, YANG Yun, YAO Chao. Influence of SiO2 Nanoparticles to Fluorescence Spectra of EthanolRhodamine 6G Solutions[J]. Acta Photonica Sinica, 2011, 40(7): 1091
Received: Feb. 23, 2011
Accepted: --
Published Online: Aug. 10, 2011
The Author Email: Ailing YANG (ailingy@ouc.edu.cn)