title: Colorimetric sensor arrays for volatile organic compounds.
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, Brønsted 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.
authors.affiliation: Department of Chemistry, University of Illinois at Urbana-Champaign, 600 South Mathews Avenur, Urbana, Illinois 61801, USA.
authors.forename: Michael C
authors.initials: MC
authors.lastname: Janzen
authors.forename: Jennifer B
authors.initials: JB
authors.lastname: Ponder
authors.forename: Daniel P
authors.initials: DP
authors.lastname: Bailey
authors.forename: Crystal K
authors.initials: CK
authors.lastname: Ingison
authors.forename: Kenneth S
authors.initials: KS
authors.lastname: Suslick
mesh_terms: D015374:Biosensing Techniques / Q000295:instrumentation* / Q000379:methods*; D003124:Colorimetry / Q000379:methods; D007700:Kinetics; D009930:Organic Chemicals / Q000737:chemistry*; D012822:Silicon Dioxide / Q000737:chemistry; D012996:Solutions; D014835:Volatilization
chemical_list: D009930:Organic Chemicals; D012996:Solutions; D012822:Silicon Dioxide