Construction of deep-blue AIE luminogens with TPE and oxadiazole units |
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Authors: | Jing Huang PengYu Chen Xiao Yang RunLi Tang Lei Wang JinQui Qin Zhen Li |
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Affiliation: | 1. Department of Chemistry, Wuhan University, Wuhan, 430072, China 2. Wuhan National Laboratory for Optoelectronics, School of Optoelectronic Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China
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Abstract: | In this paper, two AIE-active luminogens (Oxa- p TPE and Oxa- m TPE) constructed from tetraphenylethene and oxadiazole units were successfully synthesized and their thermal, optical and electronic properties were investigated. By linking TPE to the oxadiazole core through meta-or para-position, the intramolecular conjugation is effectively controlled. Thanks to the intelligent molecular design and specific AIE feature, when fabricated as emissive layers in non-doped OLEDs, they exhibit blue or deep-blue emission with CIE coordinates of (0.17, 0.23) and (0.15, 0.12), and good efficiencies with η C, max and η P, max up to 1.52 cd A?1 and 0.84 Im W?1, shedding some light on the construction of deep-blue AIE fluorophores. |
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