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	Naphthalene diimide based near-infrared luminogens with aggregation-induced emission characteristics for biological imaging and high mobility ambipolar transistors
	Guo, De1,2,3; Li, Lin3; Zhu, Xianqi3; Heeney, Martin4,5; Li, Jing1; Dong, Lichun6; Yu, Qingsong3; Gan, Zhihua3; Gu, Xinggui3; Tan, Luxi6
	2020-06-28
摘要	Organic conjugated materials combining high conductivity with strong solid-state emission are highly desired for organic electronic applications, yet still rather rare. Herein, a novel luminogen (TEN) comprised by linking naphthalene diimides and tri-phenyl ethylene with vinyl bridges is reported. TEN exhibits aggregation-induced emission (AIE) behavior of a strong near-infrared fluorescence over 700 nm and the efficiency above 60.5% in the solid state, while also shows promising applicationin vivobio-imaging with good permeability and extremely low background. Single crystal of TEN reveals intra- and intermolecular C-HMIDLINE HORIZONTAL ELLIPSISO hydrogen bonds, contributing to an inclined molecular stacking along thea-axis of the cell, creating a 1D charge carrier transporting channel under a short pi-pi interaction distance of 3.42 A, which might benefit the solid emission and charge transport ability simultaneously. Solution processed bottom contact, top gate organic field effect transistors based on TEN reveal a high ambipolar charge transport ability with the hole mobility up to 0.13 cm(2)V(-1)s(-1)and electron mobility up to 0.010 cm(2)V(-1)s(-1). Further atomic force microscopy and X-ray diffraction analysis on TEN thin film confirm the existence of the 1D pi-pi stacking channel, suggesting the stacking geometry revealed in crystal crucial for facilitating high charge carrier mobility while preserving the strong solid emission at the same time.
关键词	aggregation induced emission (AIE) naphthalene diimides (NDI) near-infrared (NIR) solid emission organic field effect transistors (OFETs) bio-imaging
DOI	10.1007/s11426-020-9776-8
发表期刊	SCIENCE CHINA-CHEMISTRY
ISSN	1674-7291
页码	10
通讯作者	Gu, Xinggui(guxinggui@mail.buct.edu.cn) ; Tan, Luxi(tanluxi@cqu.edu.cn)
收录类别	SCI
WOS记录号	WOS:000544861600001
语种	英语