How Graphene Oxide Quenches Fluorescence of Rhodamine 6G |
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| Authors: | Kai-li Fan Zhen-kun Guo Zhi-gang Geng Jing Ge Shen-long Jiang Jia-hua Hu Qun Zhang |
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| Institution: | 1.Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China2.Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026, China3.Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China;Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026, China |
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| Abstract: | We investigate the fluorescence quenching of Rhodamine 6G (R6G), a well known laser dye with a high fluorescence quantum yield, by as-synthesized graphene oxide (GO) in aqueous solution, which is found to be rather efficient. By means of steady-state and time-resolved fluorescence spectroscopy combined with detailed analysis about the linear absorption variation for this R6G-GO system, the pertinent quenching mechanism has been elucidated to be a combination of dynamic and static quenching. Possible ground-state complexes between R6G and GO during the static quenching have also been suggested. Furthermore, the direction of photoinduced electron transfer between R6G and GO has been discussed. |
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| Keywords: | Graphene oxide Rhodamine 6G Fluorescence quenching Interaction Mechanism |
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