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How Graphene Oxide Quenches Fluorescence of Rhodamine 6G
Kai-li Fan,Zhen-kun Guo,Zhi-gang Geng,Jing Ge,Shen-long Jiang,Jia-hua Hu,Qun Zhang*
Author NameAffiliationE-mail
Kai-li Fan Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China  
Zhen-kun Guo Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China  
Zhi-gang Geng Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026, China  
Jing Ge Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China  
Shen-long Jiang Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026, China  
Jia-hua Hu Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China  
Qun Zhang* Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, ChinaHefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026, China qunzh@ustc.edu.cn 
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.
Key words:  Graphene oxide, Rhodamine 6G, Fluorescence quenching, Interaction, Mechanism
FundProject:
氧化石墨烯如何猝灭罗丹明6G的荧光
樊凯利,郭镇坤,耿志刚,葛晶,江申龙,胡嘉华,张群*
摘要:
考察了水相溶液中氧化石墨烯对罗丹明6G的高效荧光猝灭.借助稳态及时间分辨荧光光谱测量,结合对该二元体系线性吸收谱变化的细致分析,澄清了相关荧光猝灭机理,即动态猝灭与静态猝灭的联合猝灭机制.提出在静态猝灭过程中罗丹明6G与氧化石墨烯所形成的可能的基态复合物,并进一步讨论了二者之间的光致电子转移过程.
关键词:  氧化石墨烯,罗丹明6G,荧光猝灭,相互作用,机理
DOI:10.1063/1674-0068/26/03/252-258
分类号: