1 September 2017 Study of the impact of UV radiation on NO2 sensing properties of graft comb copolymers of poly(3-hexylthiophene) at room temperature
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Proceedings Volume 10455, 12th Conference on Integrated Optics: Sensors, Sensing Structures, and Methods; 104550N (2017) https://doi.org/10.1117/12.2282777
Event: Twelfth Integrated Optics – Sensors, Sensing Structures and Methods Conference, 2017, Szczyrk-Gliwice, Poland
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.
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Marcin Procek, Agnieszka Stolarczyk, Erwin Maciak, "Study of the impact of UV radiation on NO2 sensing properties of graft comb copolymers of poly(3-hexylthiophene) at room temperature", Proc. SPIE 10455, 12th Conference on Integrated Optics: Sensors, Sensing Structures, and Methods, 104550N (1 September 2017); doi: 10.1117/12.2282777; https://doi.org/10.1117/12.2282777
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