期刊
CHEMISTRY-A EUROPEAN JOURNAL
卷 20, 期 24, 页码 7232-7235出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201402288
关键词
liquid crystals; N-heteroacenes; n-type; self-assembly; semiconductor
资金
- Ministry of Education, Culture, Sports, Science, and Technology of Japan [2401, 25102540, 26410099]
- Nippon Sheet Glass Foundation for Materials Science and Engineering
- Futaba Electronics Memorial Foundation
- The Kurata Grant, Kurata Memorial Hitachi Science and Technology Foundation
- Grants-in-Aid for Scientific Research [25620154, 26410099, 25102533, 25102540] Funding Source: KAKEN
The preparation of two liquid crystals composed of a redox-active tetraazanaphthacene (TANC) framework is reported. The materials form smectic A (SmA) thin-film liquid-crystalline (LC) phases over a wide temperature range. Cyclic voltammetry analysis revealed that LC TANCs behave as organic electron acceptors. The electron mobilities of the thin films were determined by time-of-flight (TOF) measurements, which are the order of 10(-4) cm(2)V(-1) s(-1) in the SmA LC phase. This value is two orders of magnitude larger than those of amorphous organic semiconductors. To the best of our knowledge, very few reports exist on the electron-transporting behaviors of LC N-heteroacene semiconductors.
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