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

Wen Bo Zhao, Jeongju Park, Anne Marie Caminade, Seong Jun Jeong, Yoon Hee Jang, Sang Ouk Kim, Jean Pierre Majoral, Jinhan Cho, Dong Ha Kim

Research output: Contribution to journalArticle

32 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)2006-2012
Number of pages7
JournalJournal of Materials Chemistry
Volume19
Issue number14
DOIs
Publication statusPublished - 2009 Mar 31
Externally publishedYes

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Dendrimers
Multilayer films
Surface plasmon resonance
Self assembly
Phosphorus
Nanoparticles
Thin films
Refractive index
Multilayers
Propylamines
Quartz crystal microbalances
Coulomb interactions
Ultraviolet spectroscopy
Gold
Alcohols
Wavelength
Substrates

ASJC Scopus subject areas

  • Materials Chemistry
  • Chemistry(all)

Cite this

Localized surface plasmon resonance coupling in Au nanoparticles/phosphorus dendrimer multilayer thin films fabricated by layer-by-layer self-assembly method. / Zhao, Wen Bo; Park, Jeongju; Caminade, Anne Marie; Jeong, Seong Jun; Jang, Yoon Hee; Kim, Sang Ouk; Majoral, Jean Pierre; Cho, Jinhan; Kim, Dong Ha.

In: Journal of Materials Chemistry, Vol. 19, No. 14, 31.03.2009, p. 2006-2012.

Research output: Contribution to journalArticle

Zhao, Wen Bo ; Park, Jeongju ; Caminade, Anne Marie ; Jeong, Seong Jun ; Jang, Yoon Hee ; Kim, Sang Ouk ; Majoral, Jean Pierre ; Cho, Jinhan ; Kim, Dong Ha. / Localized surface plasmon resonance coupling in Au nanoparticles/phosphorus dendrimer multilayer thin films fabricated by layer-by-layer self-assembly method. In: Journal of Materials Chemistry. 2009 ; Vol. 19, No. 14. pp. 2006-2012.
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