学術雑誌論文 Dinaphthotetrathiafulvalene Bisimides: A New Member of the Family of π-Extended TTF Stable p-Type Semiconductors

Yamashita, Masataka  ,  Kawano, Koki  ,  Matsumoto, Akinobu  ,  Aratani, Naoki  ,  Hayashi, Hironobu  ,  Suzuki, Mitsuharu  ,  Zhang, Lei  ,  Briseno, Alejandro L.  ,  Yamada, Hiroko

2017-07-27 , Wiley-VCH Verlag
ISSN:1521-3765
内容記述
Air-stable organic semiconductors based on tetrathiafuluvalene (TTF) were developed by synthesising a series of dinaphthotetrathiafulvalene bisimides (DNTTF-Im) using electron-donating TTF, π-extended naphthalene, and electron-withdrawing imide. Electron-spin-resonance spectroscopy and X-ray single-crystal structure analysis of aryl-substituted DNTTF-Im radical cations confirmed that localisation of the spin resides on the electron-donating TTF moiety. The organic field-effect transistor properties derived from the use of highly crystalline n-butyl (C4) and n-hexyl(C6)-substituted DNTTF-Im were assessed. The hole carrier mobility of C6-DNTTF-Im was improved from 3.7×10-3 cm2 V-1 s-1 to 0.30 cm2 V-1 s-1 in ambient conditions. This is attributed to the raise of the substrate temperature from 25 ℃ to 200 ℃ during sublimation. The XRD and microscopy analysis suggested that increasing the substrate temperature accelerates the end-on packing resulting in larger grains suitable for hole charge transport parallel to the substrate.
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http://dx.doi.org/10.1002/chem.201702657

http://library.naist.jp/dspace/xmlui/bitstream/10061/12187/1/yamashita.pdf

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