One-step, shape control synthesis of gold nanoparticles stabilized by 3-thiopheneacetic acid

A one-step, size control synthesis of gold nanoparticles under mild conditions by reducing HAuCl 4 with 3-thiopheneacetic acid (TA) was introduced and investigated as a function of TA concentration and molar ratio of TA to gold. Here, TA also acted as a protecting agent by loosely absorbing on the s...

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Bibliographic Details
Published in:Colloids and surfaces. A, Physicochemical and engineering aspects Physicochemical and engineering aspects, 2005-03, Vol.255 (1), p.11-17
Main Authors: Huang, Haizhen, Yang, Xiurong
Format: Article
Language:English
Subjects:
3-Thiopheneacetic acid (TA)
Chemistry
Colloidal state and disperse state
Exact sciences and technology
General and physical chemistry
Gold nanoparticles
Physical and chemical studies. Granulometry. Electrokinetic phenomena
Synthesis
Transmission electron microscopy (TEM)
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Summary:A one-step, size control synthesis of gold nanoparticles under mild conditions by reducing HAuCl 4 with 3-thiopheneacetic acid (TA) was introduced and investigated as a function of TA concentration and molar ratio of TA to gold. Here, TA also acted as a protecting agent by loosely absorbing on the surface of produced Au 0. With a relative higher concentration of TA or under a lower temperature, only spherical gold nanoparticles were formed. While lowering the concentration of TA, increasing the molar ratio of TA to gold, or increasing the reaction temperature, larger gold particles both in spherical and polygonal could be obtained. At the same time, the formation of gold nanoparticles with TA was also investigated by using in situ UV–vis absorption spectroscopy and transmission electron microscopy (TEM).
ISSN:0927-7757
1873-4359
DOI:10.1016/j.colsurfa.2004.12.020