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A New Benzodithiophene‐Based Cruciform Electron‐Donor–Electron‐Acceptor Molecule with Ambipolar/Photoresponsive Semiconducting and Red‐Light‐Emissive Properties
Author(s) -
Wang Zhijie,
Liu Zitong,
Gao Zhenhua,
Yang Sifen,
Wang Yuancheng,
Zhang Guanxin,
Zhao Yongsheng,
Zhang Deqing
Publication year - 2017
Publication title -
asian journal of organic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.846
H-Index - 44
eISSN - 2193-5815
pISSN - 2193-5807
DOI - 10.1002/ajoc.201700161
Subject(s) - ambipolar diffusion , cruciform , chemistry , photochemistry , molecule , optoelectronics , acceptor , homo/lumo , electron , materials science , organic chemistry , physics , quantum mechanics , composite material , condensed matter physics
The rational design of multifunctional materials with both emissive and semiconducting properties remains a challenge. A multifunctional cruciform donor–acceptor (D–A) molecule, 2,2′‐(((4,8‐bis(5‐(2‐ethylhexyl)thiophen‐2‐yl)benzo[1,2‐b:4,5‐b′]dithiophene‐2,6‐diyl)bis(thiophene‐5,2‐diyl))bis(methanylylidene))dimalononitrile ( BDTTM ), which contains a benzodithiophene as the central core, has been synthesized and, based on the output and transfer characteristics of the corresponding FETs, thin films of BDTTM exhibited ambipolar semiconducting behavior. Notably, FETs with thin films of BDTTM showed a photoresponse in both p ‐ and n ‐channels, and drain‐source‐current enhancement under white‐light irradiation could be detected, even at a low light intensity of 0.1 mW cm −2 . Furthermore, BDTTM exhibited red‐light emission both in solution and as a crystalline solid. A microplate of BDTTM with red‐light emission displayed typical optical waveguiding behavior.