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Columnar Liquid Crystalline Corannulenes: Synthesis, Assembly and Charge‐Carrier Transport Properties
Author(s) -
Li Yang,
Wang Zunzhi,
Li Mengwei,
Chen Feiyi,
Zhao Yang,
Wang Qi,
Lu Fanli,
Liu Yi,
Ren XiangKui,
Chen Long
Publication year - 2021
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.202100183
Subject(s) - mesophase , chemistry , side chain , discotic liquid crystal , azobenzene , columnar phase , crystallography , phase (matter) , molecule , alkoxy group , liquid crystal , charge (physics) , corannulene , stereochemistry , organic chemistry , polymer , materials science , optoelectronics , alkyl , physics , quantum mechanics
Main observation and conclusion Two discotic liquid crystalline (LC) molecules consisting of a bowl‐shaped corannulene core and five‐fold photoactive azobenzene branches with different paraffinic side chains were developed. Their self‐assembly, photo‐responsive behavior and charge‐carrier transport properties were investigated in detail. A wider mesophase temperature range was achieved when utilizing longer and furcal flexible side chain substitution. 2D XRD measurements revealed the π‐packed corannulene‐centered 1b ( i.e ., with furcal side alkoxyl chains) exhibited helical columnar LC phase. This packing structure also led to a higher hole charge carrier mobility of 7.07 x 10 –2 cm 2 ·V –1 ·s –1 compared to that of the counterpart 1a with linear side chain substitutions.
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