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学科主题: 物理化学
题名: Ion clustering in aqueous solutions probed with vibrational energy transfer
作者: Bian, Hongtao1;  Wen, Xiewen1;  Li, Jiebo1;  Chen, Hailong1;  Han, Suzee1;  Sun, Xiuquan2;  Song, Jian2;  Zhuang, Wei2;  Zheng, Junrong1
通讯作者: 郑俊荣
刊名: PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
发表日期: 2011-03-22
DOI: 10.1073/pnas.1019565108
卷: 108, 期:12, 页:4737-4742
收录类别: SCI
文章类型: Article
部门归属: 11
项目归属: 1107
产权排名: 2,7
WOS标题词: Science & Technology
类目[WOS]: Multidisciplinary Sciences
摘要: Ion clustering in aqueous solutions probed with vibrational energy transfer
研究领域[WOS]: Science & Technology - Other Topics
英文摘要: Despite prolonged scientific efforts to unravel the hydration structures of ions in water, many open questions remain, in particular concerning the existences and structures of ion clusters in 1:1 strong electrolyte aqueous solutions. A combined ultrafast 2D IR and pump/probe study through vibrational energy transfers directly observes ion clustering in aqueous solutions of LiSCN, NaSCN, KSCN and CsSCN. In a near saturated KSCN aqueous solution (water/KSCN molar ratio - 2.4/1), 95% of the anions form ion clusters. Diluting the solution results in fewer, smaller, and tighter clusters. Cations have significant effects on cluster formation. A small cation results in smaller and fewer clusters. The vibrational energy transfer method holds promise for studying a wide variety of other fast short-range molecular interactions.
关键词[WOS]: CHEMICAL-EXCHANGE SPECTROSCOPY ;  HYDROGEN-BOND ;  2D IR ;  HALIDE SOLUTIONS ;  WATER ;  TIME ;  THIOCYANATE ;  RELAXATION ;  TRANSITION ;  EXCITATION
语种: 英语
WOS记录号: WOS:000288712200014
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/115196
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.Rice Univ, Dept Chem, Houston, TX 77005 USA
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China

Recommended Citation:
Bian, Hongtao,Wen, Xiewen,Li, Jiebo,et al. Ion clustering in aqueous solutions probed with vibrational energy transfer[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2011,108(12):4737-4742.
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