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Fluorescent Property of Gold Nanoparticles with Different Surface Structures
Zhi-juan Zhang1, Chun-xia Wang1, Yong Wang1, Shu-hua Niu1, Chang-gui Liu2, De-gang Fu*1
1.State Key Laboratory of Bioelectronics, Southeast University, Nanjing 210096, China;2.School of Electronic Science and Engineering, Southeast University, Nanjing 210096, China
Abstract:
"?Fluorescence spectra of naked gold nanoparticles, triphenylphosphine stabled gold nanoparticles, and 3-mercaptopropionic acid substituted gold nanoparticles were studied. It was found that fluorescence intensities of gold nanoparticles were highly sensitive to surface molecules. The fluorescence quenching effect of these gold nanoparticles on CdSe nanoparticles was also investigated. This quenching effect was related to the overlap degree between the absorption spectra of gold nanoparticles and the emission spectrum of CdSe nanoparticles, and was surface-dependent as well. "
Key words:  Gold nanoparticle, CdSe nanopraticle, Fluorescence, Surface structure
FundProject:
不同表面结构的金纳米粒子荧光性质.
张志娟1, 王春霞1, 王永1, 牛书花1, 吕昌贵2, 付德刚*1
1.东南大学生物电子学国家重点实验室,南京210096;2.东南大学电子科学与工程学院,南京210096
摘要:
"研究了具有不同表面结构的金纳米粒子:裸金纳米粒子、三苯基膦修饰的金纳米粒子、巯基丙酸表面取代的金纳米粒子的荧光性质,及其对CdSe纳米粒子的荧光猝灭作用.发现不同的金纳米粒子荧光信号受粒子表面一价金离子与配体分子之间相互作用的影响,其荧光强度对其表面分子具有强烈的敏感性;具有不同表面结构的金纳米粒子对CdSe纳米粒子的荧光猝灭作用不同,与其吸收光谱和CdSe纳米粒子发射光谱的重叠程度相关."
关键词:  金纳米粒子,CdSe纳米粒子,荧光,表面结构
DOI:10.1088/1674-0068/20/06/796-800
分类号: