Organic thin film transistors as plastic chiral sensors

Organic thin-film transistor (OTFT) sensors have been recently attracting the attention for their potential exploitation as novel sensors. Specificity and sensitivity are still open issues. Chiral discrimination is both a scientific and technological achievement in itself and, indeed, one of the mos...

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Bibliographic Details
Main Authors: Torsi, L., Farinola, G.M., Marinelli, F., Angione, D., Hassan Omar, O., Valli, L., Giancane, G., Babudri, F., Palmisano, F., Zambonin, P.G., Naso, F.
Format: Conference Proceeding
Language:English
Subjects:
Gas detectors
Optical detectors
Optical films
Optical sensors
Organic semiconductors
Organic thin film transistors
Plastics
Stimulated emission
Thin film sensors
Thin film transistors
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Summary:Organic thin-film transistor (OTFT) sensors have been recently attracting the attention for their potential exploitation as novel sensors. Specificity and sensitivity are still open issues. Chiral discrimination is both a scientific and technological achievement in itself and, indeed, one of the most challenging sensorpsilas bench-test. In the present work, a chiral bilayer OTFT gas sensor - comprising an outermost layer with built in enantioselective properties - is demonstrated to exhibit field-effect amplified sensitivity that allows differential detection of optical isomers in the tens part-per-million (ppm) concentration range. The ad hoc designed organic semiconductor, endowed with chiral side groups, the bilayer structure and the TFT transducer, provide a significant step further in the development of a performing and versatile sensing platform compatible with flexible organic electronic technologies.
ISSN:1930-0395
2168-9229
DOI:10.1109/ICSENS.2008.4716686