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Templated photonic crystal fabrication of stoichiometrically complex nanoparticles for resonance raman solid cross section determinations

Wang, L and Tuschel, D and Asher, SA (2011) Templated photonic crystal fabrication of stoichiometrically complex nanoparticles for resonance raman solid cross section determinations. Journal of Physical Chemistry C, 115 (32). 15767 - 15771. ISSN 1932-7447

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Abstract

Development of methods to fabricate nanoparticles is of great interest for many applications. In this paper, we developed a facile method to fabricate complex stoichiometrically defined nanoparticles by ultilizing the defined volume interstices of close-packed photonic crystals. Fabrication of small defined size nanoparticles enables measurements of resonance Raman cross sections of solid materials. We successfully ultilized this method to fabricate mixed NaNO3/Na2SO4 nanoparticles with a defined stoichiometry on the surface of the photonic crystal spherical particles. We used these stoichiometrically defined NaNO3/Na2SO 4 nanoparticles to determine the solid UV resonance Raman cross section of the NO31 symmetric stretching band (229 nm excitation wavelength) by monitoring the Raman spectrum of Na2SO4 as an internal standard. These are the first resonance Raman cross section measurements of solids that avoid the biasing of self-absorption. These NaNO3/Na2SO4 nanoparticles appear to show a more facile photolysis than is observed for normal solid NaNO3 samples. This templated photonic crystal fabrication of complex nanoparticle method will be important for many applications. © 2011 American Chemical Society.


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Details

Item Type: Article
Status: Published
Creators/Authors:
CreatorsEmailPitt UsernameORCID
Wang, L
Tuschel, D
Asher, SAasher@pitt.eduASHER
Date: 18 August 2011
Date Type: Publication
Journal or Publication Title: Journal of Physical Chemistry C
Volume: 115
Number: 32
Page Range: 15767 - 15771
DOI or Unique Handle: 10.1021/jp2021038
Schools and Programs: Dietrich School of Arts and Sciences > Chemistry
Refereed: Yes
ISSN: 1932-7447
Date Deposited: 01 Mar 2013 15:49
Last Modified: 01 Mar 2019 14:55
URI: http://d-scholarship.pitt.edu/id/eprint/17453

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