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- W2746233587 abstract "Pressure-induced emission enhancement (PIEE), a novel phenomenon in the enhancement of the solid-state emission efficiency of fluorophores, has been arousing wide attention in recent years. However, research on PIEE is still in the early stage. To further pursue more enhanced efficiency, discovering and designing more PIEE systems would be urgently desirable and of great importance. In this Letter, we found that carbazole presented a conspicuous emission enhancement under high pressure up to 1.0 GPa. In situ high-pressure infrared spectroscopy and angle-dispersive X-ray diffraction analysis combined with Hirshfeld surface theory calculation indicated that the PIEE of carbazole was attributed to the decrease of the nonradiation vibration process. This phenomenon mainly resulted from restriction of the N-H stretching vibration by increased N-H···π interactions under high pressure. Our study puts forward a mechanism of PIEE related to the restriction of intramolecular vibration, which provided deep insight into the essential role of intermolecular interaction in fluorescence emission properties." @default.
- W2746233587 created "2017-08-31" @default.
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- W2746233587 date "2017-08-22" @default.
- W2746233587 modified "2023-10-12" @default.
- W2746233587 title "Pressure-Induced Emission Enhancement of Carbazole: The Restriction of Intramolecular Vibration" @default.
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- W2746233587 doi "https://doi.org/10.1021/acs.jpclett.7b01796" @default.
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