【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.更多还原

【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.更多还原