In this work, a new phenylethylene derivative, named 2-((3,5-di(9H-carbazol-9-yl)phenyl)(p-tolyl)methylene) malononitrile (DCPTMM), is synthesized and characterized by 1 H NMR, 13 C NMR spectroscopies, mass spectrum, and X-ray crystallography. Its photophysical properties are systematically studied and the result illustrates that DCPTMM shows aggregation-induced emission (AIE). The X-ray single crystal diffraction shows that the individual structure of crystals is monoclinic system with space

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... oup symbol P2 1 /c and presents a twisted propeller-type structure as well as the packing structure of crystals has multiple types of hydrogen bonds (C-H⋯p and C-H⋯N) formed between adjacent molecules, and there is no p-p interaction between the aromatic rings, which is the main reason for the formation of AIE. Nondoped OLED fabricated with DCPTMM as light emitting layer emits greenish yellow light with a maximum emission peak of 554 nm and has relatively good performance with a maximum current efficiency of 5.53 cd/A and a maximum brightness of 6936 cd/m 2 .