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Study of the impact of UV radiation on NO2 sensing properties of graft comb copolymers of poly(3-hexylthiophene) at room temperature
Author(s): Marcin Procek; Agnieszka Stolarczyk; Erwin Maciak
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Paper Abstract

In this paper graft copolymer of poly(3-hexylthiophene) and poly(ethylene) glycol on the polymethylsiloxane core are investigated as a receptor material for resistance gas sensor. Sensor response to 5 ppm of NO2 and its recovery after the interaction with NO2 are studied at different conditions: room temperature (RT), RT with ultraviolet (UV) radiation and at elevated temperature (50 °C). Results shows that sensor regeneration occurred faster at RT with UV than at 50 °C in dark conditions. The sensor response at RT is also higher than at 50 °C. The mixed operation conditions, namely dark conditions for adsorption and UV for desorption, provides high sensor response (3590% for 5 ppm of NO2) and relatively good regeneration (250% deviation from base-line after 30 min). Thanks to this investigated graft copolymers are promising receptor materials for chemical NO2 sensors operating at RT.

Paper Details

Date Published: 1 September 2017
PDF: 5 pages
Proc. SPIE 10455, 12th Conference on Integrated Optics: Sensors, Sensing Structures, and Methods, 104550N (1 September 2017); doi: 10.1117/12.2282777
Show Author Affiliations
Marcin Procek, Silesian Univ. of Technology (Poland)
Agnieszka Stolarczyk, Silesian Univ. of Technology (Poland)
Erwin Maciak, Silesian Univ. of Technology (Poland)

Published in SPIE Proceedings Vol. 10455:
12th Conference on Integrated Optics: Sensors, Sensing Structures, and Methods
Przemyslaw Struk; Tadeusz Pustelny, Editor(s)

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