Field-effect sensitivity enhanced bilayer chiral sensor
| Autor: | L. TORSI, G. M. FARINOLA, F. MARINELLI, M. C. TANESE, O. HASSAN OMAR, F. BABUDRI, F. PALMISANO, P. G. ZAMBONIN, F. NASO, VALLI, Ludovico |
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| Přispěvatelé: | L., Torsi, G. M., Farinola, F., Marinelli, M. C., Tanese, O., HASSAN OMAR, Valli, Ludovico, F., Babudri, F., Palmisano, P. G., Zambonin, F., Naso |
| Jazyk: | angličtina |
| Rok vydání: | 2008 |
| Předmět: | |
| Popis: | Organic thin-film transistor sensors have been recently attracting the attention of the plastic electronics community for their potential exploitation in novel sensing platforms. Specificity and sensitivity are however still open issues: in this respect chiral discrimination—being a scientific and technological achievement in itself—is indeed one of the most challenging sensor bench-tests. So far, conducting-polymer solid-state chiral detection has been carried out at part-per-thousand concentration levels. Here, a novel chiral bilayer organic thin-film transistor gas sensor—comprising an outermost layer with built-in enantioselective properties—is demonstrated to show field-effect amplified sensitivity that enables differential detection of optical isomers in the tens-of-parts-permillion concentration range. The ad-hoc-designed organic semiconductor endowed with chiral side groups, the bilayer structure and the thin-film transistor transducer provide a significant step forward in the development of a high-performance and versatile sensing platform compatible with flexible organic electronic technologies. |
| Databáze: | OpenAIRE |
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