Pressure-Induced Emission Enhancement of Carbazole: The Restriction of   Intramolecular Vibration

doi:10.1021/acs.jpclett.7b01796

CORC > 北京大学 > 化学与分子工程学院

	Pressure-Induced Emission Enhancement of Carbazole: The Restriction of Intramolecular Vibration
	Gu, Yarong ; Wang, Kai ; Dai, Yuxiang ; Xiao, Guanjun ; Ma, Yuguo ; Qiao, Yuancun ; Zou, Bo
刊名	JOURNAL OF PHYSICAL CHEMISTRY LETTERS
	2017
关键词	AGGREGATION-INDUCED EMISSION LUMINESCENCE FLUORESCENCE CRYSTAL 2,3,4,5-TETRAPHENYLSILOLES GAS
DOI	10.1021/acs.jpclett.7b01796
英文摘要	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 center dot center dot center dot pi 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.; National Natural Science Foundation of China [21673100, 91227202]; Chang Jiang Scholars Program [T2016051]; Changbai Mountain Scholars Program [2013007]; Jilin Provincial Science & Technology Development Program [20150520087JH]; Chinese Academy of Sciences [KJCX2-SW-N20, KJCX2-SW-N03]; SCI(E); ARTICLE; 17; 4191-4196; 8
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/470917]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Gu, Yarong,Wang, Kai,Dai, Yuxiang,et al. Pressure-Induced Emission Enhancement of Carbazole: The Restriction of Intramolecular Vibration[J]. JOURNAL OF PHYSICAL CHEMISTRY LETTERS,2017.
APA	Gu, Yarong.,Wang, Kai.,Dai, Yuxiang.,Xiao, Guanjun.,Ma, Yuguo.,...&Zou, Bo.(2017).Pressure-Induced Emission Enhancement of Carbazole: The Restriction of Intramolecular Vibration.JOURNAL OF PHYSICAL CHEMISTRY LETTERS.
MLA	Gu, Yarong,et al."Pressure-Induced Emission Enhancement of Carbazole: The Restriction of Intramolecular Vibration".JOURNAL OF PHYSICAL CHEMISTRY LETTERS (2017).