Study on Liquid-Liquid Interfacial Dynamics of Solvent Extraction Reaction by Total Reflection Laser-Induced Thermal Lens.

全反射激光诱导热透镜溶剂萃取反应液-液界面动力学研究。

• 批准号: 10650801
• 负责人: KAWAZUMI Hirofumi
• 金额: $ 1.92万
• 依托单位: Kinki University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1998
• 资助国家: 日本
• 起止时间: 1998 至 1999
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10650801/
• 关键词: Total Reflection; Thermal Lens; Ion-Association Reaction; Solvent Extraction; Bathophenanthroline; Complex Formation Rate; バソフェナントロリン; 反応速度; バソフィナントロリン

The microscopic information about liquid-liquid interface is very important in analytical chemistry and separation science. A new interfacial thermal lens (TL) technique has been developed for the study on dynamics of solvent extraction.In this report, this technique applied to an ion-association reaction, the formation of Fe(II)-4,7-diphenyl-1,10-phenanthroline (DPP) complex at a benzene-acetate buffer interface. The thin TL effect of the complex adsorbed on the interface could directly present the complex formation by using a combination of total reflection excitation and pump (NdYAG pulse laser)-probe (red diode laser) alignment. At first, an amphiphilic molecule, 10-(1-pyrene) decanoic acid, expanded at a hexane-phosphate buffer solution interface was used to evaluate the specification of this technique. A response is linear to amounts of the expanded molecule and a minimum detectable amount is 1.0 x 10^<-10> mol corresponding about 1/100-monolayer. A time resolution is 0.1 second, which can monitor an initial stage of the complex formation.After the preparation of the interface TL signal increased gradually corresponding to the aging of the interface formation and the complex formation. The interfacial complex formation rate was proportional to the first order of Fe (II) concentration but did not vary with the DPP concentration. Two-step mechanism is proposed ; (1) the interface aging with an adsorption of DPP to the interface up to a constant amount, (2) the interfacial complex formation with Fe (II) from aqueous phase. The Langmuir adsorptions of the complex and the counter ion effects to the complex formation rate were also observed.

液-液界面的微观信息在分析化学和分离科学中占有重要地位。建立了一种用于溶剂萃取动力学研究的界面热透镜（TL）技术。在本报告中，该技术应用于离子结合反应，在苯-乙酸缓冲界面上形成Fe(II)-4,7-二苯基-1,10-菲罗啉（DPP）配合物。采用全反射激发和泵浦（NdYAG脉冲激光器）-探针（红色二极管激光器）对准相结合的方式，吸附在界面上的配合物的薄TL效应可以直接表征配合物的形成。首先，两亲性分子10-（1-芘）癸酸在己烷-磷酸盐缓冲溶液界面上展开，以评估该技术的规格。响应与膨胀分子的量呈线性关系，最小可检测量为1.0 x 10^<-10> mol，约为1/100单层。时间分辨率为0.1秒，可以监测复杂地层的初始阶段。制备后界面TL信号逐渐增大，对应于界面形成和络合物形成的老化。界面络合物的形成速率与一级Fe （II）浓度成正比，而与DPP浓度无关。提出了两步机制；(1)界面老化随着DPP向界面吸附量达到恒定，(2)界面与水相Fe （II）形成络合物。还观察了络合物的Langmuir吸附和反离子效应对络合物形成速率的影响。

项目成果

H.Kawazumi: "Derermination-of interfacial reaction parameters in ion-association extraction by total reflection induced thermal len"Chemical Journal of Chinese Universities. 20. 214 (1999)

H.Kawazumi：“全反射诱导热透镜离子缔合萃取中界面反应参数的确定”，高等学校化学学报。

Kawazumi, H., Kaieda, T., Inoue, T., Ogawa, T.: "Development of an interfacial thermal lens technique : monitoring of dissolving process of amphiphilic molecules at the hexane-water interface."Chemical Physics Letters. 282. 159-163 (1998)

Kawazumi, H.、Kaieda, T.、Inoue, T.、Okawa, T.：“界面热透镜技术的开发：监测己烷-水界面两亲分子的溶解过程。”化学物理快报。

Kawazumi,H.: "Monitoring of chelate formation a liquid-liquid interface by total reflection induced thermal lens."Oji International Seminar on Photothermal Phenomena and their Applications. 169-172 (1998)

Kawazumi,H.：“通过全反射诱导热透镜监测液-液界面螯合物的形成。”王子光热现象及其应用国际研讨会。

H.Kawazumi: "Development of an interfacial thermal lens technique:monitoring of dissolving process of amphiphilic molecules at the hexane-water interface"Chemical Physics Letters. 282. 159-163 (1998)

H.Kawazumi：“界面热透镜技术的发展：己烷-水界面两亲分子溶解过程的监测”《化学物理快报》。

Kawazumi, H., Kaieda, T., Inoue, T., Ogawa, T.: "Monitoring of chelate formation a liquid-liquid interface by total reflection induced thermal."Oji International Seminar on Photothermal Phenomena and their Applications (ISPPA). 169-172 (1998)

Kawazumi, H.、Kaieda, T.、Inoue, T.、Okawa, T.：“通过全反射诱导热监测液-液界面的螯合物形成。”王子光热现象及其应用国际研讨会 (ISPPA)。