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タイトル
和文: 
英文:Electronic conduction in nematic phase of small molecules 
著者
和文: 徳永圭治, 高屋敷由紀子, 飯野裕明, 半那純一.  
英文: Keiji Tokunaga, Yukiko Takayashiki, Hiroaki Iino, Jun-ichi Hanna.  
言語 English 
掲載誌/書名
和文: 
英文:PHYSICAL REVIEW B 
巻, 号, ページ Vol. 79    No. 3    pp. 033201
出版年月 2009年1月 
出版者
和文: 
英文:The American Physical Society 
会議名称
和文: 
英文: 
開催地
和文: 
英文: 
公式リンク http://link.aps.org/doi/10.1103/PhysRevB.79.033201
 
DOI https://doi.org/10.1103/PhysRevB.79.033201
アブストラクト We investigated charge-carrier transport in the nematic phase of small molecules such as 2-phenylbenzothiazoles by time-of-flight experiments, in which the conduction mechanism has been considered to be ionic. As a result, we established the hole and electron transports in the nematic phase of highly purified samples: we found that there were two transits, namely, fast and slow transits, in less pure samples; the slow transit was attributed to ionic conduction originating from trace amounts of impurities and the fast transit was attributed to electronic conduction whose attribution was elucidated by mobility changes in the diluted samples with a hydrocarbon of n-tetradecane (n-C14H30). From these results, we conclude that the intrinsic conduction mechanism in the nematic phase of small molecules is ambipolar and electronic, irrespective of the size of the pi-conjugate system of the core moiety. Thus, they provide a new insight into the conduction mechanism in fluidic materials.

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