Water-soluble conjugated polymer-induced self-assembly of gold nanoparticles and its application to SERS

Langmuir : the ACS Journal of Surfaces and Colloids
Lakshminarayana Polavarapu, Qing-Hua Xu

Abstract

Gold nanochains were prepared by the assembly of citrate-stabilized gold nanospheres induced by cationic conjugated polymers. This assembly method was rapid, and the assembled product was very stable. A longitudinal plasmon resonance band was formed as a result of the coupling of gold nanoparticles and can be tuned from visible to near-infrared by adjusting the polymer/Au molar ratio. The gold nanochains were used as a SERS substrate and gave an enhancement factor of 8.4 x 10 (9), which is approximately 400 times larger than that on the isolated gold nanosphere substrate. The giant SERS enhancement is ascribed to the large electromagnetic fields of coupled gold nanoparticles.

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Citations

Apr 2, 2011·Analytical and Bioanalytical Chemistry·Li JiangSailing He
Aug 5, 2009·Chemical Communications : Chem Comm·Haibing LiJunyan Zhan
Jan 11, 2013·Physical Chemistry Chemical Physics : PCCP·Lakshminarayana Polavarapu, Luis M Liz-Marzán
Jun 11, 2010·Proceedings of the National Academy of Sciences of the United States of America·Fan XiaKevin W Plaxco
Oct 30, 2012·Nanoscale Research Letters·Xiao-Yang ZhangYuan-Jun Song
Oct 7, 2011·The Journal of Chemical Physics·Lisheng Cheng, Dapeng Cao
Feb 20, 2014·Langmuir : the ACS Journal of Surfaces and Colloids·Priyanka DeyPeter M Fredericks
May 22, 2013·ACS Applied Materials & Interfaces·Cuifeng JiangQing-Hua Xu
Dec 2, 2011·Langmuir : the ACS Journal of Surfaces and Colloids·Yih Hong LeeQing-Hua Xu
Jul 21, 2012·Langmuir : the ACS Journal of Surfaces and Colloids·Yanlin PanQing-Hua Xu
Mar 12, 2013·Langmuir : the ACS Journal of Surfaces and Colloids·Li KongJingcheng Hao
May 8, 2013·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Li JiangThomas Huser
May 25, 2011·Luminescence : the Journal of Biological and Chemical Luminescence·Sang Hak LeeSeikh Mafiz Alam
Nov 6, 2012·Biosensors & Bioelectronics·Hui ZhangHua Zhong
Feb 12, 2014·Optics Express·L O HerrmannJ J Baumberg
May 16, 2017·Langmuir : the ACS Journal of Surfaces and Colloids·Yu ToriiKuniharu Ijiro
May 31, 2017·Langmuir : the ACS Journal of Surfaces and Colloids·Yan LiuRong Guo
Jun 9, 2017·ACS Applied Materials & Interfaces·Sanjeeb Sutradhar, Archita Patnaik

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