Format

Send to

Choose Destination
See comment in PubMed Commons below
Small. 2011 Aug 8;7(15):2188-94. doi: 10.1002/smll.201100365. Epub 2011 May 31.

One-step high-yield aqueous synthesis of size-tunable multispiked gold nanoparticles.

Author information

1
International Institute of Information Technology-Hyderabad, Gachibowli, Hyderabad-500032, A.P., India.

Abstract

Multispiked gold nanoparticles are required in large quantities for many fundamental studies and applications like (bio)sensing, but their preparation in high yield by the bottom-up chemical synthetic method is challenging. A water-based, non-'seed-mediated', straightforward method for the synthesis of gold nanoparticles with well-developed surface spikes is reported here. The yield of multispiked gold particles is very high (>90%). The method allows the tuning of the number and size of the spikes and the overall size of the particles, and hence the localized surface plasmon resonances of the particles over the broad spectral range in the visible and near-infrared. A mechanism for the evolution of twinned, sharp-tipped surface protrusions has been proposed based on systematic spectrophotometric and transmission electron microscopic studies, which were employed to elucidate the morphological features, structure, chemical composition, and optical properties of the multispiked gold nanoparticles.

PMID:
21630442
DOI:
10.1002/smll.201100365
[Indexed for MEDLINE]
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for Wiley
    Loading ...
    Support Center