Structural and vibrational properties of phenanthrene under pressure

	Structural and vibrational properties of phenanthrene under pressure
	Huang, QW; Zhang, J; Berlie, A; Qin, ZX; Zhao, XM; Zhang, JB; Tang, LY; Liu, J; Zhang, C; Zhong, GH
刊名	JOURNAL OF CHEMICAL PHYSICS
	2013
卷号	139 期号:10 页码:104302
英文摘要	The structural and vibrational properties of phenanthrene are measured at high pressures up to 30.2 GPa by Raman spectroscopy and synchrotron X-ray diffraction techniques. Two phase transitions are observed in the Raman spectra at pressures of 2.3 GPa and 5.4 GPa which correspond to significant changes of intermolecular and intramolecular vibrational modes. Above 10.2 GPa, all the Raman peaks are lost within the fluorescence background; however, upon further compression above 20.0 GPa, three broad peaks are observed at 1600, 2993, and 3181 cm(-1), indicating that phenanthrene has transformed into amorphous phase. Using X-ray diffraction, the structures of corresponding phases observed from Raman spectra are indexed with space groups of P2(1) for phase I (0-2.2 GPa), P2/m for phase II (2.2-5.6 GPa), P2/m+Pmmm for phase III (5.6-11.4 GPa) which has a coexistence of structures, and above 11.4 GPa the structure is indexed with space group of Pmmm. Although phenanthrene has transformed to a hydrogenated amorphous carbon structure above 20.0 GPa, these amorphous clusters still show characteristic crystalline behavior based on our X-ray diffraction patterns. Our results suggest that the long-range periodicity and the local disorder state coexist in phenanthrene at high pressures. (C) 2013 AIP Publishing LLC.
学科主题	Physics
收录类别	SCI
WOS记录号	WOS:000324387400021
公开日期	2016-05-03
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/224615]
专题	高能物理研究所_多学科研究中心
推荐引用方式 GB/T 7714	Huang, QW,Zhang, J,Berlie, A,et al. Structural and vibrational properties of phenanthrene under pressure[J]. JOURNAL OF CHEMICAL PHYSICS,2013,139(10):104302.
APA	Huang, QW.,Zhang, J.,Berlie, A.,Qin, ZX.,Zhao, XM.,...&Chen, XJ；刘景.(2013).Structural and vibrational properties of phenanthrene under pressure.JOURNAL OF CHEMICAL PHYSICS,139(10),104302.
MLA	Huang, QW,et al."Structural and vibrational properties of phenanthrene under pressure".JOURNAL OF CHEMICAL PHYSICS 139.10(2013):104302.