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Title 

Bovine serum albumin as an effective surface regulating biopolymer for morphology control of gold polyhedrons

Authors 

S J LeeN ScottiN RavasioIm Sik ChungH Song

Publisher 

American Chemical Society

Issue Date 

2013

Citation 

Crystal Growth and Design, vol. 13, no. 9, pp. 4131-4137

Keywords 

11-mercaptoundecanoic acidBovine serum albuminsModified polyol processMorphology controlPartial denaturationPoly vinyl pyrrolidoneStable dispersionsUnderpotential deposition

Abstract 

Morphology control of gold nanocrystals was successfully carried out via a modified polyol process using bovine serum albumin (BSA) as a surface regulating biopolymer. By combining a small amount of AgNO3 as an additive, BSA yielded regular Au octahedrons, cubes, and higher polygons owing to the underpotential deposition of Ag species onto {100} facets. Unexpectedly, a uniform tetrahexahedral morphology that had high-index facets of {740} and {210} on the surface was formed at a relatively high concentration of AgNO 3 with BSA, and was due to the coordination power of BSA to a gold surface weaker than that of poly(vinyl pyrrolidone). The resulting gold polyhedrons were aggregated after the synthesis because of the partial denaturation of BSA, but the simple surface exchange with 11-mercaptoundecanoic acid enabled a stable dispersion in aqueous solution.

ISSN 

1528-7483

Link 

http://dx.doi.org/10.1021/cg400949x

Appears in Collections

1. Journal Articles > Journal Articles

Registered Date

2017-04-19


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