Multicolour nanospheres fabricated by in situ transformation of metal nanostructures on the surface of polymer spheres

Cited 0 time in scopus
Metadata Downloads
Title
Multicolour nanospheres fabricated by in situ transformation of metal nanostructures on the surface of polymer spheres
Author(s)
Yong Taik Lim; Jin Kyeong Kim; Bong Hyun Chung
Bibliographic Citation
Nanotechnology, vol. 17, no. 15, pp. 3699-3702
Publication Year
2006
Abstract
The optical properties of polymer nanospheres were tuned by in situ transformation of metal structures on their surfaces. Silver nanoparticles (NPs) deposited on the polystyrene nanospheres were transformed into metal hollows made of gold/silver alloy by a galvanic replacement reaction. The metal hollows made of gold/silver alloy were finally changed into solid gold nanoparticles by the additional treatment of chloroauric acid. Through the transformation process, the optical resonance peak of metal-coated polystyrene (PS) nanospheres was tuned in the 410 to 820nm region. The transformation of metal nanostructures on the surface of PS nanospheres was monitored and characterized by UV-visible-near infrared (NIR) spectroscopy and transmission electron microscopy. The described protocols should be applied to prepare the metal-coated polymer nanospheres with tunable surface plasmon resonance (from 450 to 820nm) which would be very useful for biological assays.
ISSN
0957-4484
Publisher
IOP Publishing Ltd
DOI
http://dx.doi.org/10.1088/0957-4484/17/15/013
Type
Article
Appears in Collections:
1. Journal Articles > Journal Articles
Files in This Item:
  • There are no files associated with this item.


Items in OpenAccess@KRIBB are protected by copyright, with all rights reserved, unless otherwise indicated.