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液体水中的自由OH及其结构改变
  • ISSN号：1674-0068
  • 期刊名称：《化学物理学报》
  • 时间：0
  • 分类：O6[理学—化学]
  • 作者机构：[1]中国科学技术大学合肥微尺度物质科学国家实验室筹,化学物理系,合肥230026, [2]瑞典皇家理工学院生物工程学院理论化学系,斯德哥尔摩S-10691
  • 相关基金：This work is supported by the National Key Basic Research Special Foundation （No.2010CB923300）, the National Natural Science Foundation of China （No.20925311, No.91127042, and No.21103158）, and the GSran Gustafsson Foundation for Research in Natural Sciences and Medicine.
作者： 林珂[1], 周晓国[1], 刘世林[1], 罗毅[1,2]
关键词： 水, 自由OH, 拉曼光谱, 微观结构, Water, Free -OH, Raman spectrum, Micro-structure
中文摘要：

液体水中自由oH的确认对理解液体水的微观结构非常重要．通过随温度变化的水的拉曼光谱分析其相对强度的变化及退偏比，发现了自由-OH存在的直接证据，结果显示虽然液体水从5℃到85℃结构发生明显变化，但是自由－OH的含量几乎不变，且含量非常少，约为3％．这表明了氢键从四氢键形式断裂时更容易发生在氢键受体部位．

英文摘要：

The molecular structure of liquid water has been an outstanding issue for many years. The identification of free -OH holds the key in differentiating structure models for liquid water. By analyzing the relative changes of the intensity and depolarization ratio in temperature dependent Raman spectra, the occurrence of free -OH in liquid water is unambiguously de- termined. Furthermore, upon the increase of temperature from 5 ~C to 85 ~C, the structure of liquid water undergoes significant change, but the relative proportion of free -OH is con- siderably small and remains almost unchanged. This implies that the breaking of hydrogen bond from the tetrahedral structure prefers to The energetic favoring of the structural change experiments. occur at the site of the hydrogen acceptor. for liquid water is thus clearly revealed from

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期刊信息
  • 《化学物理学报》
  • 中国科技核心期刊
  • 主管单位:中国科协
  • 主办单位:中国物理学会
  • 主编：杨学明
  • 地址：合肥中国科学技术大学
  • 邮编：230026
  • 邮箱：cjcp@ustc.edu.cn
  • 电话：0551-3601122
  • 国际标准刊号：ISSN：1674-0068
  • 国内统一刊号：ISSN：34-1295/O6
  • 邮发代号:26-62
  • 获奖情况:
  • 1998年获安徽省优秀科技期刊一等奖
  • 国内外数据库收录:
  • 俄罗斯文摘杂志,美国化学文摘（网络版）,荷兰文摘与引文数据库,美国科学引文索引（扩展库）,英国科学文摘数据库,日本日本科学技术振兴机构数据库,中国中国科技核心期刊,中国北大核心期刊（2004版）,英国英国皇家化学学会文摘,中国北大核心期刊（2000版）
  • 被引量:4282