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Title 

Coordination power adjustment of surface-regulating polymers for shaping gold polyhedral nanocrystals

Authors 

S J LeeG ParkD SeoD KaS Y KimIm Sik ChungH Song

Publisher 

Wiley-Blackwell

Issue Date 

2011

Citation 

Chemistry ? A European Journal, vol. 17, no. 30, pp. 8466-8471

Keywords 

coordinationgoldmorphologynanoparticlespolymers

Abstract 

PVP (poly(vinyl pyrrolidone)) is a common polymer that behaves as a surface-regulating agent that shapes metal nanocrystals in the polyol process. We have used different polymers containing tertiary amide groups, namely PVCL (poly(vinyl caprolactam)) and PDMAm (poly(N,N-dimethyl acrylamide)), for the synthesis of gold polyhedrons, including octahedrons, cuboctahedrons, cubes, and higher polygons, under the present polyol reaction conditions. The basicity and surface coordination power of the polymers are in the order of PVCL, PVP, and PDMAm. A correlation is observed between the coordination power of the polymers and the resulting gold nanocrystal size. Strong coordination and electron donation from the polymer functional groups to the gold surface restrict particle growth rates, which leads to small nanocrystals. The use of PVCL can yield gold polyhedral structures with small sizes, which cannot be achieved in the reactions with PVP. Simultaneous hydrolysis of the amide group in PDMAm leads to carboxylate functionality, which is very useful for generating chemical and bioconjugates through the formation of ester and amide bonds.

ISSN 

0947-6539

Link 

http://dx.doi.org/10.1002/chem.201100472

Appears in Collections

1. Journal Articles > Journal Articles

Registered Date

2019-05-02


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