Electron transport of photoconductive n-type liquid crystals based on a redox-active tetraazanaphthacene framework

Kyosuke Isoda; Tomonori Abe; Masahiro Funahashi; Makoto Tadokoro

doi:10.1002/chem.201402288

Electron transport of photoconductive n-type liquid crystals based on a redox-active tetraazanaphthacene framework

Kyosuke Isoda
, Tomonori Abe
, Masahiro Funahashi
, Makoto Tadokoro

Department of Chemistry

Research output: Contribution to journal › Article › peer-review

23 Citations (Scopus)

Abstract

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^-4cm ²V^-1s^-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.

Original language	English
Pages (from-to)	7232-7235
Number of pages	4
Journal	Chemistry - A European Journal
Volume	20
Issue number	24
DOIs	https://doi.org/10.1002/chem.201402288
Publication status	Published - 10 Jun 2014

Keywords

N-heteroacenes
liquid crystals
n-type
self-assembly
semiconductor

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10.1002/chem.201402288

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abstract = "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 10-4cm 2V-1s-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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T1 - Electron transport of photoconductive n-type liquid crystals based on a redox-active tetraazanaphthacene framework

AU - Isoda, Kyosuke

AU - Abe, Tomonori

AU - Funahashi, Masahiro

AU - Tadokoro, Makoto

PY - 2014/6/10

Y1 - 2014/6/10

N2 - 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 10-4cm 2V-1s-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.

AB - 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 10-4cm 2V-1s-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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KW - liquid crystals

KW - n-type

KW - self-assembly

KW - semiconductor

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DO - 10.1002/chem.201402288

M3 - Article

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JO - Chemistry - A European Journal

JF - Chemistry - A European Journal

IS - 24

ER -

Electron transport of photoconductive n-type liquid crystals based on a redox-active tetraazanaphthacene framework

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