NDLI: Controllable synthesis of gold nanoparticles with ultrasmall size and high monodispersity via continuous Supplementary of precursor

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Controllable synthesis of gold nanoparticles with ultrasmall size and high monodispersity via continuous Supplementary of precursor

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Cheng, Hao Pan, Guoqiang Sun, Zhihu Li, Yuanyuan Wei, Shiqiang Yan, Wensheng Huang, Yuying Liu, Shoujie Yao, Tao Jiang, Zheng Jiang, Yong Xie, Zhi Huang, Yuanyuan
Description	Author Affiliation: Li Y ( National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui 230029, PR China.)
Abstract	Synthesis of monodisperse small Au nanoparticles in a controllable manner is of great importance for fundamental science and technical applications. Here, we report a “precursor continuous-supply” strategy for controllable synthesis of 0.9–3.3 nm Au nanoparticles with a narrow size distribution of 0.1–0.2 nm, using a weak reductant to slow-down the reducing rate of $AuClPPh_{3}$ precursor in ethanol . Time-dependent X-ray absorption and UV-Vis absorption measurements revealed that owing to the joint use of $AuClPPh_{3}$ and ethanol , the remnant $AuClPPh_{3}$ was self-supplied and the precursor concentration was maintained at a level near to its equilibrium solubility (ca. 1.65 mmol $L^{−1})$ in ethanol . Hence the nucleation duration was extended that focused the initial size distribution of the Au clusters. With reaction going on for 58 min, most of $AuClPPh_{3}$ with a nominal Au concentration of 17.86 mmol $L^{−1}$ was converted to ethanol -soluble Au clusters with a size of about 1.0 nm, resulting in a high-yield synthesis.
ISSN	14779226
Issue Number	38
Journal	Dalton Trans.
Volume Number	41
e-ISSN	13645447
Language	English
Publisher	Royal Society of Chemistry
Publisher Date	2012-10-14
Publisher Place	Great Britain (UK)
Access Restriction	Subscribed
Subject Keyword	Chemistry
Content Type	Text
Resource Type	Article
Subject	Inorganic Chemistry

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