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Thermal Properties of Poly(3-(2′-Ethyl)Hexylthiophene): Study with a Real-Time Combination of Synchrotron X-Ray Scattering and Ultrafast Chip Calorimetryстатья
- Авторы: MELNIKOV Alexey P., ROSENTHAL Martin, ERDMANN Tim, KIRIY Anton, IVANOV Dimitri A.
- Журнал: Key Engineering Materials
- Год издания: 2020
- Издательство: Trans Tech Publications Ltd.
- Местоположение издательства: Germany
- DOI: 10.4028/www.scientific.net/KEM.869.375
- Аннотация: Here we report on reorganization on heating of a perspective organic semiconductorpoly(3-(2′-ethyl)hexylthiophene) (P3EHT). P3EHT is an analogue of a well-known poly(3-hexylthiophene) (P3HT), which has comparable optoelectronic properties and the advantage of alower processing temperature. The processes of structural reorganization during heating of P3EHThave been explored with a combination of synchrotron X-ray scattering and ultrafast chipcalorimetry. The signature of reorganization has been identified from an increase of d-spacing of100 peak of the P3EHT unit cell. It was observed that reorganization operates during heating ofP3EHT at conventional rates of a DSC experiment (i.e., at 10 deg/min), whereas it is largelysuppressed at a heating rate of 100 deg/s. Despite the absence of reorganization at high heating rates the calorimetric curves exhibit pronounced double melting, which corroborates the model of the negative pressure building up during crystallization of semi-rigid chain polymers.
- Добавил в систему: Иванов Дмитрий Анатольевич