Surfactant-free synthesis of anisotropic gold nanostructures: can dicarboxylic acids alone act as shape directing agents?

TitleSurfactant-free synthesis of anisotropic gold nanostructures: can dicarboxylic acids alone act as shape directing agents?
Publication TypeJournal Article
Year of Publication2013
AuthorsKumar, DVRavi, Kumavat, SR, Chamundeswari, VN, Patra, PPratim, Kulkarni, AA, Prasad, BLV
JournalRSC Advances
Volume3
Issue44
Pagination21641-21647
Date PublishedAUG
ISSN2046-2069
Abstract

The present study describes the synthesis of gold nanostructures using different dicarboxylic (viz. oxalic, malonic, succinic, glutaric and adipic) acids as reducing agents in the absence of any other additives or surfactants. Various anisotropic structures such as kites, tadpoles, triangular/hexagonal plates, and twinned particles were seen to evolve depending on the molar ratio of dicarboxylic acid to HAuCl4 used. It was also demonstrated that gold nanostructure formation is hampered as the chain length/distance between two carboxylic acid groups increases. Among the various structures obtained the kite like structures displayed the largest surface enhanced Raman enhancement factors.

DOI10.1039/c3ra43974g
Type of Journal (Indian or Foreign)Foreign
Impact Factor (IF)3.708
Divison category: 
Chemical Engineering & Process Development
Physical and Materials Chemistry