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Vibrational spectra and molecular orientation with experimental configuration analysis in surface sum frequency generation (SFG)
Gan, Wei; Wu, Bao-Hua; Zhang, Zhen; Guo, Yuan; Wang, Hong-Fei
Source PublicationJOURNAL OF PHYSICAL CHEMISTRY C
2007-06-28
DOI10.1021/jp067062h
Volume111Issue:25Pages:8716-8725
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
WOS SubjectChemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science
WOS KeywordOPTICAL 2ND-HARMONIC GENERATION ; LIQUID-LIQUID INTERFACE ; ACID-WATER MIXTURES ; REFLECTION GEOMETRY ; ADSORPTION LAYERS ; VAPOR INTERFACE ; GAS INTERFACE ; SPECTROSCOPY ; POLARIZATION ; METHANOL
AbstractRecent developments in sum frequency generation-vibrational spectroscopy (SFG-VS) have shown that SFG-VS is not only a spectroscopic probe of the molecular interfaces but also an important tool for studying molecular spectroscopy in general. It has been demonstrated that through polarization and symmetry analysis a few sets of polarization selection rules can explicitly help the vibrational spectral assignment. This worked because of the coherent nature and the strong orientational dependence of the SFG process from the molecular interfaces or films. In this work, we further discuss the dependence on the experimental configurations in the SFG-VS polarization analysis. Such experiment and analysis can further increase the ability of the SFG-VS as the tool for discerning spectral details and overlapping spectral features, as well as the ability to obtain detailed molecular orientational information. The experimental configuration dependence of the SFG spectra is most significant in the ppp polarization combination, less significant in the sps and ssp polarization combinations, due to the fact that ppp is the result of the combination of four different susceptibility tensor elements, while both ssp and sps are of a single tensor element. Such complexity of the ppp spectrum, which is very useful as demonstrated in this work, used to be avoided in the SFG-VS studies. The spectral details of the SFG-VS from the vapor/methanol, vapor/ethanol, and vapor/ethylene glycol interfaces are studied in different experimental configurations. The strong experimental configuration dependence observed for these liquid interfaces also indicated that they possess well-ordered interfacial structures. The concepts and conclusions in this report may find future applications in studying more complex molecular interfaces and films.
Language英语
WOS IDWOS:000247601900003
Citation statistics
Cited Times:53[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/140448
Collection中国科学院大连化学物理研究所
Affiliation1.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
GB/T 7714
Gan, Wei,Wu, Bao-Hua,Zhang, Zhen,et al. Vibrational spectra and molecular orientation with experimental configuration analysis in surface sum frequency generation (SFG)[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2007,111(25):8716-8725.
APA Gan, Wei,Wu, Bao-Hua,Zhang, Zhen,Guo, Yuan,&Wang, Hong-Fei.(2007).Vibrational spectra and molecular orientation with experimental configuration analysis in surface sum frequency generation (SFG).JOURNAL OF PHYSICAL CHEMISTRY C,111(25),8716-8725.
MLA Gan, Wei,et al."Vibrational spectra and molecular orientation with experimental configuration analysis in surface sum frequency generation (SFG)".JOURNAL OF PHYSICAL CHEMISTRY C 111.25(2007):8716-8725.
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