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Nonresonant Energy Transfers Independent on the Phonon Densities in Polyatomic Liquids
Chen, Hailong1; Zhang, Qiang2,3; Guo, Xunmin1; Wen, Xiewen1; Li, Jiebo1; Zhuang, Wei2; Zheng, Junrong1
Source PublicationJOURNAL OF PHYSICAL CHEMISTRY A
2015-01-29
DOI10.1021/jp511651t
Volume119Issue:4Pages:669-680
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
WOS SubjectChemistry, Physical ; Physics, Atomic, Molecular & Chemical
WOS Research AreaChemistry ; Physics
WOS KeywordNORMAL-MODE ANALYSIS ; VIBRATIONAL-RELAXATION ; MOLECULAR-DYNAMICS ; AQUEOUS-SOLUTIONS ; SOLIDS ; SPECTROSCOPY ; SYSTEMS
AbstractEnergy-gap-dependent vibrational-energy transfers among the nitrile stretches of KSCN/(KSCN)-C-13/(KSCN)-C-13-N-15 in D2O, DMF, and formamide liquid solutions at room temperature were measured by the vibrational-energy-exchange method. The energy transfers are slower with a larger energy donor/acceptor gap, independent of the calculated instantaneous normal mode (phonons in liquids) densities or the terahertz absorption spectra. The energy-gap dependences of the nonresonant energy transfers cannot be described by phonon compensation mechanisms with the assumption that phonons are the instantaneous normal modes of the liquids. Instead, the experimental energy-gap dependences can be quantitatively reproduced by the dephasing mechanism. A simple theoretical derivation shows that the fast molecular motions in liquids randomize the modulations on the energy donor and acceptor by phonons and diminish the phonon compensation efficiency on energy transfer. Estimations based on the theoretical derivations suggest that, for most nonresonant intermolecular vibrational-energy transfers in liquids with energy gaps smaller than the thermal energy, the dephasing mechanism dominates the energy-transfer process.
Language英语
WOS IDWOS:000348752400014
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/145965
Collection中国科学院大连化学物理研究所
Affiliation1.Rice Univ, Dept Chem, Houston, TX 77005 USA
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Liaoning, Peoples R China
3.Bohai Univ, Inst Chem Chem Engn & Food Safety, Jinzhou 121000, Peoples R China
Recommended Citation
GB/T 7714
Chen, Hailong,Zhang, Qiang,Guo, Xunmin,et al. Nonresonant Energy Transfers Independent on the Phonon Densities in Polyatomic Liquids[J]. JOURNAL OF PHYSICAL CHEMISTRY A,2015,119(4):669-680.
APA Chen, Hailong.,Zhang, Qiang.,Guo, Xunmin.,Wen, Xiewen.,Li, Jiebo.,...&Zheng, Junrong.(2015).Nonresonant Energy Transfers Independent on the Phonon Densities in Polyatomic Liquids.JOURNAL OF PHYSICAL CHEMISTRY A,119(4),669-680.
MLA Chen, Hailong,et al."Nonresonant Energy Transfers Independent on the Phonon Densities in Polyatomic Liquids".JOURNAL OF PHYSICAL CHEMISTRY A 119.4(2015):669-680.
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