At 191 °C the organic semiconductor -quaterthiophene is demonstrated to undergo a phase transition from the low temperature to the high temperature polymorph. Calorimetry, x-ray diffraction, optical reflectivity, and ellipsometry measurements were employed to analyze this transition and to show that this can be thermally induced on single crystals preserving the single crystalline nature of the sample over large domains.
Crystal to crystal phase transition in alfa quaterthiophene: an optical and structural study
Porzio W
2007
Abstract
At 191 °C the organic semiconductor -quaterthiophene is demonstrated to undergo a phase transition from the low temperature to the high temperature polymorph. Calorimetry, x-ray diffraction, optical reflectivity, and ellipsometry measurements were employed to analyze this transition and to show that this can be thermally induced on single crystals preserving the single crystalline nature of the sample over large domains.File in questo prodotto:
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Descrizione: Crystal-to-crystal phase transition in quaterthiophene: An optical
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