Issue 14, 2009
From the journal:

Journal of Materials Chemistry

Localized surface plasmon resonance coupling in Au nanoparticles/phosphorus dendrimer multilayer thin films fabricated by layer-by-layer self-assembly method†

Wen Bo Zhao,a   Jeongju Park,b   Anne-Marie Caminade,c   Seong-Jun Jeong,d   Yoon Hee Jang,a   Sang Ouk Kim,d   Jean-Pierre Majoral,c   Jinhan Cho*b  and  Dong Ha Kim*a  

* Corresponding authors

a Department of Chemistry and Nano Science, Ewha Womans University, 11-1 Daehyun-Dong, Seodaemun-Gu, Seoul, Korea
E-mail: dhkim@ewha.ac.kr
Fax: +82-2-3277-3419
Tel: +82-2-3277-4517

b School of Advanced Materials Engineering, Kookmin University, Chungneung-Dong, Korea
E-mail: jinhan@kookmin.ac.kr
Fax: +82-2-910-4320
Tel: +82-2-910-4287

c Laboratoire de Chimie de Coordination, CNRS UPR 8241, 205 Route de Narbonne, Toulouse Cedex 04, France

d Department of Materials Science and Engineering, KAIST Institute for the Nanocentury, KAIST, Daejeon, Korea

Abstract

Multilayer thin films of anionic gold nanoparticles (AuNPs) and cationic phosphorus dendrimers were deposited on 3-(diethoxymethyl-silyl)propylamine (3-APDMES)-coated substrates using layer-by-layer (LbL) assembly driven by electrostatic interactions. The growth of Au/dendrimer multilayers composed of AuNPs with diameters of ∼3 nm and ∼16 nm and dendrimer with ∼2 nm diameter was monitored by UV-vis spectroscopy. The relative amounts of AuNPs and dendrimers in the multilayer films were calculated using a quartz crystal microbalance. The Au-containing multilayers have two surface plasmon bands at ∼530 nm and ∼600 nm, where the latter exhibits a red shift upon increasing the areal density of AuNPs as well as increasing the layer number. The localized surface plasmon resonance (LSPR) band of the hybrid films can be tuned by adding NaCl to the dendrimer solution or by removing the organic matrix. These results demonstrate that the near-field coupling between the LSPR bands of neighboring Au layers is responsible for the controlled absorption behavior. Au mesoporous films after removing dendrimers show LSPR sensing properties for alcohols with different refractive indices in the range 1.33–1.41. A linear relationship was obtained between the LSPR peak wavelength and the refractive index of the surrounding medium.

Graphical abstract: Localized surface plasmon resonance coupling in Au nanoparticles/phosphorus dendrimer multilayer thin films fabricated by layer-by-layer self-assembly method

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Article information

DOI
https://doi.org/10.1039/B814116A
Article type
Paper
Submitted
14 Aug 2008
Accepted
05 Jan 2009
First published
11 Feb 2009

J. Mater. Chem., 2009,19, 2006-2012

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Localized surface plasmon resonance coupling in Au nanoparticles/phosphorus dendrimer multilayer thin films fabricated by layer-by-layer self-assembly method

W. B. Zhao, J. Park, A. Caminade, S. Jeong, Y. H. Jang, S. O. Kim, J. Majoral, J. Cho and D. H. Kim, J. Mater. Chem., 2009, 19, 2006 DOI: 10.1039/B814116A

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