Two-dimensional photonic crystal surfactant detection

Zhang, JT and Smith, N and Asher, SA (2012) Two-dimensional photonic crystal surfactant detection. Analytical Chemistry, 84 (15). 6416 - 6420. ISSN 0003-2700

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Abstract

We developed a novel two-dimensional (2-D) crystalline colloidal array photonic crystal sensing material for the visual detection of amphiphilic molecules in water. A close-packed polystyrene 2-D array monolayer was embedded in a poly(N-isopropylacrylamide) (PNIPAAm)-based hydrogel film. These 2-D photonic crystals placed on a mirror show intense diffraction that enables them to be used for visual determination of analytes. Binding of surfactant molecules attaches ions to the sensor that swells the PNIPAAm-based hydrogel. The resulting increase in particle spacing red shifts the 2-D diffracted light. Incorporation of more hydrophobic monomers increases the sensitivity to surfactants. © 2012 American Chemical Society.

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Details

Item Type:	Article
Status:	Published
Creators/Authors:	Creators Email Pitt Username ORCID Zhang, JT Smith, N Asher, SA asher@pitt.edu ASHER
Date:	7 August 2012
Date Type:	Publication
Journal or Publication Title:	Analytical Chemistry
Volume:	84
Number:	15
Page Range:	6416 - 6420
DOI or Unique Handle:	10.1021/ac300174m
Schools and Programs:	Dietrich School of Arts and Sciences > Chemistry
Refereed:	Yes
ISSN:	0003-2700
PubMed ID:	22720790
Date Deposited:	14 Feb 2013 21:16
Last Modified:	02 Feb 2019 16:58
URI:	http://d-scholarship-dev.library.pitt.edu/id/eprint/17320

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