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Title: Exceptional enhancement of Raman scattering on silver chlorobromide nanocube photonic crystals: chemical and photonic contributions

Abstract

Photonic crystals made from self-assembly of mono-dispersed AgCl xBr 1-x nanocubes, which are not plasmonically active, have been discovered to exceptionally enhance Raman scattering of molecules chemically adsorbed on their surfaces. Comprehensive control measurements and X-ray absorption near-edge structure spectroscopy indicate that the Raman enhancement on the AgCl xBr 1-x nanocube photonic crystals is primarily ascribed to the chemical enhancement mechanism associated with the chemical interactions between adsorbing molecules and the AgCl xBr 1-x surfaces. In addition, the ordering of the AgCl xBr 1-x nanocubes in the photonic crystals can selectively reflect Raman scattering back to the detector at the bandgap position of the photonic crystals to provide additional enhancement, i.e., photonic mode enhancement. The thiophenol molecules adsorbed on the AgCl 0.44Br 0.56 nanocube photonic crystals exhibit astonishingly strong Raman signals that are on the same order of magnitude as those recorded from the thiophenol molecules adsorbed on the assembled Ag nanocubes.

Authors:
 [1];  [1];  [1];  [1];  [1]
  1. Argonne National Lab. (ANL), Argonne, IL (United States)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1392364
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Journal of Materials Chemistry. C
Additional Journal Information:
Journal Volume: 3; Journal Issue: 11; Journal ID: ISSN 2050-7526
Publisher:
Royal Society of Chemistry
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Li, Zheng, Gosztola, David J., Sun, Cheng-Jun, Heald, Steve M., and Sun, Yugang. Exceptional enhancement of Raman scattering on silver chlorobromide nanocube photonic crystals: chemical and photonic contributions. United States: N. p., 2015. Web. doi:10.1039/c5tc00077g.
Li, Zheng, Gosztola, David J., Sun, Cheng-Jun, Heald, Steve M., & Sun, Yugang. Exceptional enhancement of Raman scattering on silver chlorobromide nanocube photonic crystals: chemical and photonic contributions. United States. doi:10.1039/c5tc00077g.
Li, Zheng, Gosztola, David J., Sun, Cheng-Jun, Heald, Steve M., and Sun, Yugang. Mon . "Exceptional enhancement of Raman scattering on silver chlorobromide nanocube photonic crystals: chemical and photonic contributions". United States. doi:10.1039/c5tc00077g. https://www.osti.gov/servlets/purl/1392364.
@article{osti_1392364,
title = {Exceptional enhancement of Raman scattering on silver chlorobromide nanocube photonic crystals: chemical and photonic contributions},
author = {Li, Zheng and Gosztola, David J. and Sun, Cheng-Jun and Heald, Steve M. and Sun, Yugang},
abstractNote = {Photonic crystals made from self-assembly of mono-dispersed AgClxBr1-x nanocubes, which are not plasmonically active, have been discovered to exceptionally enhance Raman scattering of molecules chemically adsorbed on their surfaces. Comprehensive control measurements and X-ray absorption near-edge structure spectroscopy indicate that the Raman enhancement on the AgClxBr1-x nanocube photonic crystals is primarily ascribed to the chemical enhancement mechanism associated with the chemical interactions between adsorbing molecules and the AgClxBr1-x surfaces. In addition, the ordering of the AgClxBr1-x nanocubes in the photonic crystals can selectively reflect Raman scattering back to the detector at the bandgap position of the photonic crystals to provide additional enhancement, i.e., photonic mode enhancement. The thiophenol molecules adsorbed on the AgCl0.44Br0.56 nanocube photonic crystals exhibit astonishingly strong Raman signals that are on the same order of magnitude as those recorded from the thiophenol molecules adsorbed on the assembled Ag nanocubes.},
doi = {10.1039/c5tc00077g},
journal = {Journal of Materials Chemistry. C},
number = 11,
volume = 3,
place = {United States},
year = {Mon Feb 02 00:00:00 EST 2015},
month = {Mon Feb 02 00:00:00 EST 2015}
}

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Cited by: 2 works
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Works referenced in this record:

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