Thieno[3,2-b]thiophene derivatives exhibiting semiconducting liquid-crystalline phases at lower temperatures
| Autor: | Masahiro Funahashi, Nobuyuki Tamaoki, Yuna Kim |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Electron mobility
Materials science business.industry Liquid crystalline General Chemical Engineering Mesogen General Chemistry Atmospheric temperature range law.invention chemistry.chemical_compound Crystallography Semiconductor chemistry Optical microscope law Thiophene Organic chemistry Solubility business |
| Zdroj: | RSC Adv.. 4:60511-60518 |
| ISSN: | 2046-2069 |
| DOI: | 10.1039/c4ra11326h |
| Popis: | We synthesized novel liquid crystalline semiconductors bearing an extended π-conjugated mesogen based on thieno[3,2-b]thiophene, which exhibit high solubility and low phase transition temperature. In particular, lateral methyl substitution to the mesogenic unit led to the formation of efficiently self-organized LC domains at lower temperature than that of reported liquid crystalline thieno[3,2-b]thiophene derivatives. Smectic A and smectic E phases were observed by a polarizing optical microscope over a wide temperature range between 75 and 125 °C. Hole mobility was determined by the time-of-flight (TOF) method, and calculated up to 2 × 10−3 cm2 V−1 s−1. Herein we report the synthesis, thermophysical and carrier transport properties of novel thieno[3,2-b]thiophene based liquid-crystalline semiconductors. |
| Databáze: | OpenAIRE |
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