Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/43984
Title: Facile synthesis of gold/polymer nanocomposite particles using polymeric amine-based particles as dual reductants and templates
Authors: Tan, NPB
Lee, CH
Chen, L
Ho, KM
Lu, Y
Ballauff, M
Li, P 
Keywords: Core-shell microgel
Gold nanoparticle
Nanocomposites
Issue Date: 2015
Publisher: Elsevier
Source: Polymer, 2015, v. 76, 18101, p. 271-279 How to cite?
Journal: Polymer (United Kingdom) 
Abstract: Herein we report a facile synthesis of gold nanoparticle/polymer nanocomposite particles through a spontaneous reduction of tetrachloroauric (III) acid and encapsulation of resultant gold nanoparticles using amine-rich polymeric particles in water. The particle consisted of core-shell nanostructure with a dense layer of polyethyleneimine (PEI) shell. The hydrophilic PEI shell acted as a reductant to generate gold nanoparticles (AuNPs), while the particle as a polymer template to in-situ encapsulate and stabilize the resultant AuNPs, giving a stable gold/polymer nanocomposite particle in water. The PEI-based core-shell particles with different degree of softness were found to have little influence on the reduction ability of the gold salt, but considerablely affect the encapsulating capability. Increasing the level of softness of particle core gave higher encapsulation efficiency to the gold nanoparticles. A soft type of core-shell microgel, namely poly(N-isopropyl acrylamide)/polyethyleneimine (PNIPAm/PEI) was further investigated with respect to the reduction rate, encapsulation efficiency, as well as nanocomposite stability and properties. Results indicated that reduction rate of gold salts using the PNIPAm/PEI microgels as the reductant was two orders of magnitude faster than that of the native PEI. Solution pH and amine to gold salt ratio also affected the formation of Au@PNIPAm/PEI composite particles. Our results demonstrate that the use of polymeric amine-based particles is a simple and green synthesis of Au@polymer nanocomposite particles in aqueous system which is free from organic solvent, reducing and stabilizing agents.
URI: http://hdl.handle.net/10397/43984
ISSN: 0032-3861
EISSN: 1873-2291
DOI: 10.1016/j.polymer.2015.09.015
Appears in Collections:Journal/Magazine Article

Access
View full-text via PolyU eLinks SFX Query
Show full item record

SCOPUSTM   
Citations

10
Last Week
0
Last month
Citations as of Nov 6, 2017

WEB OF SCIENCETM
Citations

8
Last Week
1
Last month
Citations as of Nov 11, 2017

Page view(s)

35
Last Week
2
Last month
Checked on Nov 13, 2017

Google ScholarTM

Check

Altmetric



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.