期刊
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
卷 267, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.saa.2021.120575
关键词
4-Styrylbenzonitrile; Organic fluorophores; Deep Blue fluorescence; Aggregation-induced emission; Solid-state emission
类别
资金
- National Natural Science Foundation of China [21702114, 21977060]
- Shandong Provincial Key Research and Development Program, China [2019GSF107078]
- Beijing National Laboratory for Molecular Sciences, Chinese Academy of Sciences
Organic fluorescent molecules with pi-conjugated system have significant importance in applications such as bioimaging and optoelectronics. This study successfully synthesized highly planar 4-styrylbenzonitrile derivatives and discovered their strong luminescent properties in the solid state.
Organic fluorescent molecules with pi-conjugated system have shown great importance in numerous applications including bioimaging and optoelectronics. Planar aggregation-induced emissive (AIE) organic compounds with efficient solid-state luminescence are rarely developed and urgently needed in various applications. In this work, highly planar 4-styrylbenzonitrile derivatives have been synthe-sized. Most of these compounds show strong AIE properties with hundred-fold fluorescent enhancement. Moreover, these molecules are deep blue emissive in solid state, exhibiting good to excellent fluorescence quantum efficiency. The single crystal analysis shows that adjacent molecules could form special J-type aggregation. The intramolecular rotations are efficiently restricted by various noncovalent interactions. These molecular arrangements could be essential for the observed strong emission in aggregated and solid state. This work has paved a new path to efficient AIE-active organic emitters with highly planar conformations from 4-styrylbenzonitrile structure. (C)& nbsp;2021 Elsevier B.V. All rights reserved.& nbsp;
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