Colorimetric sensor arrays for volatile organic compounds

Michael C. Janzen, Jennifer B. Ponder, Daniel P. Bailey, Crystal K. Ingison, Kenneth S. Suslick

Research output: Contribution to journalArticlepeer-review

Abstract

The development of a low-cost, sensitive colorimetric sensor array for the detection and identification of volatile organic compounds (VOCs) is reported. Using an array composed of chemoresponsive dyes, enormous discriminatory power is possible in a simple device that can be imaged easily with an ordinary flatbed scanner. Excellent differentiation of closely related organic compounds can be achieved, and a library of 100 VOCs is presented. The array discriminates among VOCs by probing a wide range of intermolecular interactions, including Lewis acid/base, Bronsted acid/base, metal ion coordination, hydrogen bonding, and dipolar interactions. Importantly, by proper choice of dyes and substrate, the array is essentially nonresponsive to changes in humidity.

Original languageEnglish (US)
Pages (from-to)3591-3600
Number of pages10
JournalAnalytical chemistry
Volume78
Issue number11
DOIs
StatePublished - Jun 1 2006

ASJC Scopus subject areas

  • Analytical Chemistry

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