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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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基于量子点的荧光共振能量转移
, PP. 1036-1039
Keywords: 量子点,十六烷基三甲基溴化胺,巯基乙酸,荧光共振能量转移
Abstract:
研究了具有相反电荷的两种量子点间的荧光共振能量转移。分别以巯基乙酸(TGA)和十六烷基三甲基溴化胺(CTMAB)修饰发射绿色和红色荧光的CdSe/ZnS量子点,使其由油溶性变为水溶性,且表面带相反的电荷,并对修饰后的水相量子点进行琼脂糖凝胶电泳、荧光成像、量子产率等系列表征。对两种量子点间的荧光共振能量转移现象进行研究。结果表明:在激发波长为400nm时,两种量子点在磷酸盐缓冲溶液(pH7.5)中具有较好的荧光共振能量转移效率(猝灭效率0.54,增强效率0.27)。
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