Quantum-size-effect accommodation of gold clusters with altered fluorescence of dyes

CORC > 化学研究所 > 中国科学院化学研究所 > 分子动态与稳态结构实验室

	Quantum-size-effect accommodation of gold clusters with altered fluorescence of dyes
	Liu, Xianhu 1,2; Wu, Yishi 1; Li, Shuanghao 3; Zhao, Yan 3; Yuan, Chengqian 1,2; Jia, Meiye 1; Luo, Zhixun 1; Fu, Hongbing 1,4; Yao, Jiannian 1
刊名	RSC ADVANCES
	2015
卷号	5 期号:39 页码:30610-30616
英文摘要	We have synthesized monodispersed Au-25 nanoclusters (NCs) stabilized with eco-friendly glutathione and report here an insight into their interactions with dye molecules. In the presence of such gold NCs, consistent fluorescence quenching was observed for all the dye molecules that we examined in this study regardless of their maximum emission wavelengths. The steady-state and time-resolved spectroscopic results demonstrate that the weakened luminance is associated with the protective ligand pertaining to a static quenching mechanism. Having expounded this issue, we further employed proper laser irradiation enabling dissociation of Au-25(SG)(18) so as to attain a transformation of nonplasmonic NCs into plasmonic gold nanoparticles (NPs) via photo-assisted aggregation of the dissociated gold clusters. As a result, emission enhancement for these dyes was observed, which is largely attributed to the local electromagnetic field enhancement of gold NPs. The alternation of fluorescence quenching to emission enhancement reflects an accommodation of quantum size effects upon the ligand-stabilized gold clusters.
收录类别	SCI
语种	英语
公开日期	2015-11-03
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/28613]
专题	化学研究所_分子动态与稳态结构实验室
作者单位	1.Chinese Acad Sci, Inst Chem, BNLMS, State Key Lab Struct Chem Unstable & Stable Speci, Beijing 100190, Peoples R China 2.GUCAS, Beijing 100049, Peoples R China 3.Beijing Univ Technol, Inst Laser Engn, Beijing 100022, Peoples R China 4.Capital Normal Univ, Dept Chem, Beijing 100048, Peoples R China
推荐引用方式 GB/T 7714	Liu, Xianhu,Wu, Yishi,Li, Shuanghao,et al. Quantum-size-effect accommodation of gold clusters with altered fluorescence of dyes[J]. RSC ADVANCES,2015,5(39):30610-30616.
APA	Liu, Xianhu.,Wu, Yishi.,Li, Shuanghao.,Zhao, Yan.,Yuan, Chengqian.,...&Yao, Jiannian.(2015).Quantum-size-effect accommodation of gold clusters with altered fluorescence of dyes.RSC ADVANCES,5(39),30610-30616.
MLA	Liu, Xianhu,et al."Quantum-size-effect accommodation of gold clusters with altered fluorescence of dyes".RSC ADVANCES 5.39(2015):30610-30616.