Nonresonant Energy Transfers Independent on the Phonon Densities in Polyatomic Liquids
文献类型：期刊论文
| 作者 | Chen, Hailong1; Zhang, Qiang2,3; Guo, Xunmin1; Wen, Xiewen1; Li, Jiebo1; Zhuang, Wei2; Zheng, Junrong1 |
| 刊名 | journal of physical chemistry a
 |
| 出版日期 | 2015-01-29 |
| 卷号 | 119期号:4页码:669-680 |
| 英文摘要 | energy-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. |
| WOS标题词 | science & technology ; physical sciences |
| 类目[WOS] | chemistry, physical ; physics, atomic, molecular & chemical |
| 研究领域[WOS] | chemistry ; physics |
| 关键词[WOS] | normal-mode analysis ; vibrational-relaxation ; molecular-dynamics ; aqueous-solutions ; solids ; spectroscopy ; systems |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000348752400014 |
| 公开日期 | 2016-05-09 |
| 源URL | [http://cas-ir.dicp.ac.cn/handle/321008/145965]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 作者单位 | 1.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 |
| 推荐引用方式 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. |
入库方式： OAI收割
来源：大连化学物理研究所
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