Elementary process from electronic energy to thermal energy and the quantum effect to molecular diffusion process
从电子能到热能的基本过程以及量子效应到分子扩散过程
基本信息
- 批准号:10206202
- 负责人:
- 金额:$ 16.51万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Scientific Research on Priority Areas (B)
- 财政年份:1998
- 资助国家:日本
- 起止时间:1998 至 2000
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
The laser induced transient grating was used to study the molecular dynamics in solution phase.1.The elementary energy transfer process from the electronic energy to the thermal energy was revealed by newly developed methods such as the temperature lens, temperature grating, acoustic peak shift method, and molecular heater-molecular thermometer system. We found that the time profile of the intermolecular energy transfer was expressed by a bi-exponential function. The fast process represents the energy transfer from the photoexcited molecule to the nearest solvent molecules. The slower process represents the heat conduction process among the solvent molecules. The relationship between the transfer rate and the intermolecular interaction was revealed for Betaine-30 in various solvents.2.Molecular diffusion processes of chemically reactive molecules were studied by the transient grating technique. We found that the diffusion process of the reaction intermediate species was very much different from that of chemically stable mole cules. The origin of the slow diffusion of the radicals was attributed to the enhanced intermolecular interaction between the radical and the solvent molecules.3.Several protein dynamic were studied using a new measurement we have developed from a point of view of the enthalpy change and the volume change.
采用激光诱导瞬态光栅技术研究溶液相分子动力学:1.利用温度透镜、温度光栅、声峰位移法、分子加热器-分子温度计系统等新方法,揭示了溶液相电子能量向热能的基本能量传递过程。我们发现分子间能量转移的时间分布可用双指数函数表示。快速过程代表从光激发分子到最近的溶剂分子的能量转移。较慢的过程代表溶剂分子之间的热传导过程。研究了甜菜碱-30在不同溶剂中的扩散速率与分子间相互作用的关系。2.利用瞬态光栅技术研究了化学反应性分子的扩散过程。我们发现反应中间物种的扩散过程与化学稳定分子的扩散过程有很大的不同。自由基扩散缓慢的原因是自由基与溶剂分子之间的分子间相互作用增强。3.从焓变和体积变化的角度研究了几种蛋白质的动力学。
项目成果
期刊论文数量(35)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
K.Takeshita: "Temperature dependent volume change of initial step of the photoreaction of Photoactive Yellow Protein studied by the transient grating"J.Am.Chem.Soc.. 122. 8524-8528 (2000)
K.Takeshita:“通过瞬态光栅研究光活性黄色蛋白光反应初始步骤的温度依赖性体积变化”J.Am.Chem.Soc.. 122. 8524-8528 (2000)
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- 影响因子:0
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K.Okamoto: "Diffusion of photochemical intermediate radicals in water/ethanol mixed solvents." J.Phys.Chem.A. 102. 3447-3454 (1998)
K.Okamoto:“光化学中间体自由基在水/乙醇混合溶剂中的扩散。”
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- 影响因子:0
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- 通讯作者:
A. Ukai, N. Hirota, M. Terazima: "Diffusion of organic molecules in the excited triplet states detected by the transient grating with a high wavenumber"J. Phys. Chem. A. 104. 6681-6688 (2000)
A. Ukai、N. Hirota、M. Terazima:“高波数瞬态光栅检测到激发三重态有机分子的扩散”J。
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- 影响因子:0
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K. Takeshita, N. Hirota, Y. Imamoto, M. Kataoka, F. Tokunaga, M. Terazima: "Temperature dependent volume change of initial step of the photoreaction of Photoactive Yellow Protein studied by the transient grating"J. Am. Chem. Soc.. 122. 8524-8528 (2000)
K. Takeshita、N. Hirota、Y. Imamoto、M. Kataoka、F. Tokunaga、M. Terazima:“通过瞬态光栅研究光活性黄色蛋白光反应初始步骤的温度依赖性体积变化”J。
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- 影响因子:0
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M. Terazima: "Optical heterodyne detected transient grating for studies of photochemical reactions and solution dynamics"Chem. Phys. Lett.. 304. 343-349 (1999)
M. Terazima:“用于光化学反应和溶液动力学研究的光学外差检测瞬态光栅”Chem。
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TERAZIMA Masahide其他文献
TERAZIMA Masahide的其他文献
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{{ truncateString('TERAZIMA Masahide', 18)}}的其他基金
Creation of time-resolved thermodynamics and application to elucidation of protein reaction mechanism
时间分辨热力学的创建及其在阐明蛋白质反应机制中的应用
- 批准号:
18205002 - 财政年份:2006
- 资助金额:
$ 16.51万 - 项目类别:
Grant-in-Aid for Scientific Research (A)
Conformational changes and fluctuations of proteins in wide range during reactions
反应过程中蛋白质大范围的构象变化和波动
- 批准号:
13853002 - 财政年份:2001
- 资助金额:
$ 16.51万 - 项目类别:
Grant-in-Aid for Scientific Research (S)
Study of Space and Time Distribution of Precipitation in Tropics by Doppler Radars
多普勒雷达研究热带降水时空分布
- 批准号:
12440164 - 财政年份:2000
- 资助金额:
$ 16.51万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
Studies of structural dynamics of protein and the coherent motion by nonlinear optical spectroscopy
非线性光谱研究蛋白质的结构动力学和相干运动
- 批准号:
10440173 - 财政年份:1998
- 资助金额:
$ 16.51万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
Development of a new detection method of time resolved circular dichroism
时间分辨圆二色性新检测方法的开发
- 批准号:
08554021 - 财政年份:1996
- 资助金额:
$ 16.51万 - 项目类别:
Grant-in-Aid for Scientific Research (A)
Development of a new spectroscopy based on several transient lens effects and its application to chemical reactions
基于几种瞬态透镜效应的新型光谱学的开发及其在化学反应中的应用
- 批准号:
06453023 - 财政年份:1994
- 资助金额:
$ 16.51万 - 项目类别:
Grant-in-Aid for General Scientific Research (B)
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