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题名: Determination of the two methyl group orientations at vapor/acetone interface with polarization null angle method in SFG vibrational spectroscopy
作者: Chen, H;  Gan, W;  Wu, BH;  Wu, D;  Zhang, Z;  Wang, HF
刊名: CHEMICAL PHYSICS LETTERS
发表日期: 2005-06-17
DOI: 10.1016/j.cplett.2005.04.033
卷: 408, 期:4-6, 页:284-289
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Physical ;  Physics, Atomic, Molecular & Chemical
研究领域[WOS]: Chemistry ;  Physics
英文摘要: We report a direct measurement of the orientation of the two CH3 groups of acetone molecule at the vapor/acetone interface. The interfacial acetone molecule is found well-ordered, with one methyl group points away around 14.4 degrees +/- 1.9 degrees and another into the bulk liquid around 102.8 degrees +/- 1.9 degrees from the interface normal, and thus the C = O group points into the bulk around 135.8 degrees +/- 1.9 degrees. These results directly confirmed the highly ordered and even crystal like interfacial structure of the vapor/acetone interface from previous MD simulation. The general formulation and accurate determination of the orientational parameter D can be used to treat interfaces with complex molecular orientations. (c) 2005 Elsevier B.V. All rights reserved.
关键词[WOS]: SUM-FREQUENCY GENERATION ;  AIR-WATER-INTERFACE ;  SURFACE-ADSORPTION LAYERS ;  LIQUID-VAPOR INTERFACE ;  2ND-HARMONIC GENERATION ;  MOLECULAR-ORIENTATION ;  AIR/WATER INTERFACE ;  METHANOL ;  SPECTRA ;  ACETONE
语种: 英语
WOS记录号: WOS:000229824700020
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/139637
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Chem, State Key Lab Mol React Dynam, Beijing 100080, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100864, Peoples R China

Recommended Citation:
Chen, H,Gan, W,Wu, BH,et al. Determination of the two methyl group orientations at vapor/acetone interface with polarization null angle method in SFG vibrational spectroscopy[J]. CHEMICAL PHYSICS LETTERS,2005,408(4-6):284-289.
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