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Title: Solvent-mediated plasmon-tuning in a gold nanoparticle-poly(ionic liquid) composite.

Abstract

The design, synthesis, and characterization of a hierarchically ordered composite whose structure and optical properties can be reversibly switched by adjustment of solvent conditions are described. Solvent-induced swelling and de-swelling is shown to provide control over the internal packing arrangement and hence, optical properties of in situ synthesized metal nanoparticles. Specifically, a gold-nanoparticle-containing ionic-liquid-derived polymer is synthesized in a single step by UV irradiation of a metal-ion-precursor-doped, self-assembled ionic liquid gel, 1-decyl-3-vinylimidazolium chloride. Small-angle X-ray scattering (SAXS) studies indicate that in the de-swollen state, the freestanding polymer adopts a perforated lamellar structure. Optical spectroscopy of the dried composite reveals plasmon resonances positioned in the near-IR. Strong particle-particle interactions arise from matrix-promoted formation of aggregated 1D clusters or chains of gold nanoparticles. Upon swelling in alcohol, the composite undergoes a structural conversion to a disordered structure, which is accompanied by a color change from purple to pale pink and a shift in the surface plasmon resonance to 527 nm, consistent with isolated, non-interacting particles. These results demonstrate the far-field tuning of the plasmonic spectrum of gold nanoparticles by solvent-mediated changes in its encapsulating matrix, offering a straightforward, low-cost strategy for the fabrication of nanophotonic materials.

Authors:
; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
962534
Report Number(s):
ANL/MSD/JA-56548
Journal ID: ISSN 1616-301X; TRN: US0902879
DOE Contract Number:  
DE-AC02-06CH11357
Resource Type:
Journal Article
Resource Relation:
Journal Name: Adv. Functional Mater.; Journal Volume: 17; Journal Issue: 8 ; May 2007
Country of Publication:
United States
Language:
ENGLISH
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; COLOR; DESIGN; FABRICATION; GOLD; IRRADIATION; OPTICAL PROPERTIES; PLASMONS; POLYMERS; RESONANCE; SCATTERING; SOLVENTS; SPECTROSCOPY; SWELLING; SYNTHESIS; TUNING

Citation Formats

Batra, D., Seifert, S., Varela, L., and Firestone, M. A. Solvent-mediated plasmon-tuning in a gold nanoparticle-poly(ionic liquid) composite.. United States: N. p., 2007. Web. doi:10.1002/adfm.200600797.
Batra, D., Seifert, S., Varela, L., & Firestone, M. A. Solvent-mediated plasmon-tuning in a gold nanoparticle-poly(ionic liquid) composite.. United States. doi:10.1002/adfm.200600797.
Batra, D., Seifert, S., Varela, L., and Firestone, M. A. Tue . "Solvent-mediated plasmon-tuning in a gold nanoparticle-poly(ionic liquid) composite.". United States. doi:10.1002/adfm.200600797.
@article{osti_962534,
title = {Solvent-mediated plasmon-tuning in a gold nanoparticle-poly(ionic liquid) composite.},
author = {Batra, D. and Seifert, S. and Varela, L. and Firestone, M. A.},
abstractNote = {The design, synthesis, and characterization of a hierarchically ordered composite whose structure and optical properties can be reversibly switched by adjustment of solvent conditions are described. Solvent-induced swelling and de-swelling is shown to provide control over the internal packing arrangement and hence, optical properties of in situ synthesized metal nanoparticles. Specifically, a gold-nanoparticle-containing ionic-liquid-derived polymer is synthesized in a single step by UV irradiation of a metal-ion-precursor-doped, self-assembled ionic liquid gel, 1-decyl-3-vinylimidazolium chloride. Small-angle X-ray scattering (SAXS) studies indicate that in the de-swollen state, the freestanding polymer adopts a perforated lamellar structure. Optical spectroscopy of the dried composite reveals plasmon resonances positioned in the near-IR. Strong particle-particle interactions arise from matrix-promoted formation of aggregated 1D clusters or chains of gold nanoparticles. Upon swelling in alcohol, the composite undergoes a structural conversion to a disordered structure, which is accompanied by a color change from purple to pale pink and a shift in the surface plasmon resonance to 527 nm, consistent with isolated, non-interacting particles. These results demonstrate the far-field tuning of the plasmonic spectrum of gold nanoparticles by solvent-mediated changes in its encapsulating matrix, offering a straightforward, low-cost strategy for the fabrication of nanophotonic materials.},
doi = {10.1002/adfm.200600797},
journal = {Adv. Functional Mater.},
number = 8 ; May 2007,
volume = 17,
place = {United States},
year = {Tue May 01 00:00:00 EDT 2007},
month = {Tue May 01 00:00:00 EDT 2007}
}