標題: Dynamic study on the transformation process of gold nanoclusters
作者: Ma, Xiaoqian
Wen, Xiaoming
Toh, Yon-Rui
Huang, Kuo-Yen
Tang, Jau
Yu, Pyng
光電工程學系
Department of Photonics
關鍵字: gold nanocluster;time-dependent fluorescence spectra;structure transformation;growth mechanism
公開日期: 7-十一月-2014
摘要: In this paper, the transformation process from Au-8 to Au-25 nanoclusters (NCs) is investigated with steady state fluorescence spectroscopy and time-resolved fluorescence spectroscopy at various reaction temperatures and solvent diffusivities. Results demonstrate that Au-8 NCs, protected by bovine serum albumin, transform into Au-25 NCs under controlled pH values through an endothermic reaction with the activation energy of 74 kJ mol(-1). Meanwhile, the characteristic s-shaped curves describing the formation of Au-25 NCs suggest this process involves a diffusion controlled growth mechanism.
URI: http://dx.doi.org/10.1088/0957-4484/25/44/445705
http://hdl.handle.net/11536/123912
ISSN: 0957-4484
DOI: 10.1088/0957-4484/25/44/445705
期刊: NANOTECHNOLOGY
Volume: 25
Issue: 44
顯示於類別:期刊論文


文件中的檔案:

  1. 000344160000022.pdf