Please use this identifier to cite or link to this item:
|Title:||Seedless, surfactantless, high-yield synthesis of branched gold nanocrystals in HEPES buffer solution||Authors:||Xie, J.
|Issue Date:||29-May-2007||Citation:||Xie, J., Lee, J.Y., Wang, D.I.C. (2007-05-29). Seedless, surfactantless, high-yield synthesis of branched gold nanocrystals in HEPES buffer solution. Chemistry of Materials 19 (11) : 2823-2830. ScholarBank@NUS Repository.||Abstract:||In this work, three-dimensional branched gold nanocrystals were produced at high yield by reacting an aqueous solution of chloroauric acid with a Good's buffer, HEPES, at room temperature. This particular method of preparation was scalable to gram-quantity. The branched nanocrystals containing one to eight tips were stable at room temperature and could be stored as a powder after freeze-drying. They were, however, unstable at higher temperatures and transformed into spherical particles upon boiling. The formation of the branched gold nanocrystals was kinetically controlled, as shown by the dependence of shapes on temperature and precursor salt concentration. The growth of branched gold nanocrystals in the HEPES buffer was monitored by microscopic and spectroscopic techniques, allowing the detection of several key intermediates in the growth process. Piperazine in HEPES molecule was identified as the principal moiety responsible for forming highly branched Au nanocrystals in the HEPES buffer. © 2007 American Chemical Society.||Source Title:||Chemistry of Materials||URI:||http://scholarbank.nus.edu.sg/handle/10635/64555||ISSN:||08974756|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Mar 14, 2018
WEB OF SCIENCETM
checked on Dec 31, 2018
checked on Oct 13, 2019
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.