| Statistical theory for hydrogen bonding fluid system of A_aD_d type (I): The geometrical phase transition |
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| 作者姓名： | WANG Haijun HONG Xiaozhong GU Fang & BA Xinwu . College of Chemistry and Environment Science Hebei University Baoding China . International Center for Materials Physics Chinese Academy of Sciences Shenyang China . College of Physics Science and Technology Hebei University Baoding China |
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| 作者单位： | WANG Haijun1，2，HONG Xiaozhong3，GU Fang1 & BA Xinwu1 1. College of Chemistry and Environment Science，Hebei University，Baoding 071002，China; 2. International Center for Materials Physics，Chinese Academy of Sciences，Shenyang 110016，China; 3. College of Physics Science and Technology，Hebei University，Baoding 071002，China |
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| 基金项目： | 国家自然科学基金;河北省自然科学基金;河北省教育厅自然科学基金 |
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| 摘 要： | The influence of hydrogen bonds on the physical and chemical properties of hydrogen bonding fluid system of AaDd type is investigated from two viewpoints by the principle of statistical mechanics. In detail, we proposed two new ways that can be used to obtain the equilibrium size distribution of the hydrogen bonding clusters, and derived the analytical expression of a relationship between the hydrogen bonding free energy and hydrogen bonding degree. For the nonlinear hydrogen bonding systems, it is shown that the sol-gel phase transition can take place under proper conditions, which is further proven to be a kind of geometrical phase transition rather than a thermodynamic one. Moreover, several problems associated with the geometrical phase transition and liquid-solid phase transition in nonlinear hydrogen bonding systems are discussed.
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Statistical theory for hydrogen bonding fluid system of AaDd type (I): The geometrical phase transition |
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| WANG Haijun,,HONG Xiaozhong,GU Fang & BA Xinwu . College of Chemistry and Environment Science,Hebei University,Baoding ,China, . International Center for Materials Physics,Chinese Academy of Sciences,Shenyang ,China, . College of Physics Science and Technology,Hebei University,Baoding ,China.Statistical theory for hydrogen bonding fluid system of A_aD_d type (I): The geometrical phase transition[J].Science in China(Chemistry),2006,49(6). |
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| Authors: | WANG Haijun HONG Xiaozhong GU Fang BA Xinwu |
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| Abstract: | The influence of hydrogen bonds on the physical and chemical properties of hydrogen bonding fluid system of AaDd type is investigated from two viewpoints by the principle of statistical mechanics. In detail, we proposed two new ways that can be used to obtain the equilibrium size distribution of the hydrogen bonding clusters, and derived the analytical expression of a relationship between the hydrogen bonding free energy and hydrogen bonding degree. For the nonlinear hydrogen bonding systems, it is shown that the sol-gel phase transition can take place under proper conditions, which is further proven to be a kind of geometrical phase transition rather than a thermodynamic one. Moreover, several problems associated with the geometrical phase transition and liquid-solid phase transition in nonlinear hydrogen bonding systems are discussed. |
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| Keywords: | hydrogen bonding fluid equilibrium free energy geometrical phase transition |
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