Visual Indicator for Trace Organic Volatiles

We describe herein a novel approach for visual indication of trace organic vapors. The sensor utilizes a microporous material within a visual thin film transducer to produce changes in color upon exposure to a very wide range of volatile organic compounds. Visual indication at 5 parts per million (p...

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Bibliographic Details
Published inLangmuir Vol. 26; no. 6; pp. 3767 - 3770
Main Authors Rakow, Neal A, Wendland, Michael S, Trend, John E, Poirier, Richard J, Paolucci, Dora M, Maki, Stephen P, Lyons, Christopher S, Swierczek, Mary J
Format Journal Article
LanguageEnglish
Published Washington, DC American Chemical Society 16.03.2010
Subjects
Chemistry
Colloidal state and disperse state
Exact sciences and technology
General and physical chemistry
Porous materials
Surface physical chemistry
Design
Trace
Microporosity
Optoelectronics
Volatile organic compound
Water vapor
Volatiles
Porous material
Thin film
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Summary:We describe herein a novel approach for visual indication of trace organic vapors. The sensor utilizes a microporous material within a visual thin film transducer to produce changes in color upon exposure to a very wide range of volatile organic compounds. Visual indication at 5 parts per million (ppm) is demonstrated, with optoelectronic detection achieved to below 50 parts per billion (ppb). Through a thoughtful design of the sensor, we are able to avoid interference from water vapor, a critical attribute needed for practical application.
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ISSN:0743-7463
1520-5827
DOI:10.1021/la903483q