Please use this identifier to cite or link to this item:
|Title:||Identification of active biomolecules in the high-yield synthesis of single-crystalline gold nanoplates in algal solutions|
|Authors:||Xie, J. |
|Citation:||Xie, J., Lee, J.Y., Wang, D.I.C., Ting, Y.P. (2007-04). Identification of active biomolecules in the high-yield synthesis of single-crystalline gold nanoplates in algal solutions. Small 3 (4) : 672-682. ScholarBank@NUS Repository. https://doi.org/10.1002/smll.200600612|
|Abstract:||In this work, single-crystalline gold nanoplates were produced by treating an aqueous solution of chloroauric acid with the extract of the unicellular green alga Chlorella vulgaris at room temperature. The results suggest proteins as the primary biomolecules involved in providing the dual function of Au III reduction and the size- and shape-controlled synthesis of the nanogold crystals. A protein with a molecular weight of approximately 28 kDa was isolated and purified by reversed-phase HPLC; this protein tested positive for the reduction of chloroauric acid in aqueous solution. The isolated protein (named gold shape-directing protein, or GSP for convenience) was then used to produce gold nanoplates with distinctive triangular and hexagonal shapes in high yields (≈90%). The kinetics of the reduction reaction could be manipulated through changes in the GSP concentration to produce plates with lateral sizes ranging from nanometers to micrometers. The growth of gold nanoplates in the GSP solution with time was monitored by microscopic and spectroscopic techniques, thereby allowing the detection of several key intermediates in the growth process. © 2007 Wiley-VCH Verlag GmbH & Co. KGaA.|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Mar 17, 2019
WEB OF SCIENCETM
checked on Mar 6, 2019
checked on Mar 9, 2019
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.