Sensors and methods for detecting organic carbonyl species

Details Sensors and methods for detecting organic carbonyl species Sensors and methods for detecting organic carbonyl species

G - Physics

01

N

G01N 21/75 (2006.01) G01N 27/12 (2006.01) G01N 37/00 (2006.01)

Patent

CA 2732202

A method for detecting an organic carbonyl species involves exposing a metal oxide-free film of a polyaniline to an environment suspected of containing an organic carbonyl species, detecting a change in electrical conductivity and/or an optical or luminescent property of the polyaniline, and, correlating the change in electrical conductivity and/or optical or luminescent property to a presence of the organic carbonyl species in the environment. Further, sensors for organic carbonyl species are disclosed having a metal oxide-free film of a polyaniline supported on an electrically insulating substrate. The method and sensors provide a good balance between response time and sensitivity, being considerably faster than metal oxide and metal oxide/polymer based sensors, while having greater sensitivity than other polymer-based sensors.

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