分子尺度高端学术系列论坛(十九):Spatiotemporal Control of Chemical Reactions with Sound

作者: 发布时间: 2024-01-22 浏览次数: [ ]

主讲人:Kimoon Kim教授

时间:12510:00

地点:丽湖校区守信楼420会议室

   

报告人简介:

Kimoon Kim,韩国科学院院士,于1976年获得首尔国立大学理学学士学位,1978年于韩国科学技术高级研究所获得硕士学位。1986年于美国斯坦福大学获得博士学位。1986-1988在美国西北大学进行博士后研究,1988年在浦项科技大学化学系(POSTECH)开始自己的学术生涯。主要研究兴趣包括:(1) Supramolecular chemistry: Molecular recognition using synthetic receptors; Synthesis and Applications of topologically interesting molecules such as rotaxanes, polyrotaxanes and molecular necklaces; (2) Materials chemistry: Nonlinear optical materials(NLO) materials; Liquid crystalline materials; micro- and meso porous materials and open-framework materials; (3) Bioinorganic chemistry: model study of the active sites of metalloenymes; (4) Early transition metal porphyrin chemistry/Organometallic chemistry and catalysis。

报告摘要

Patterns from out-of-equilibrium chemical networks, such as the Belousov-Zhabotinsky (BZ) reaction, are generally unpredictable and difficult to control in space and time, although they are reproducible over subsequent cycles. Recently, we have shown that it is possible to control spatiotemporal patterns in out-of-equilibrium chemical reactions and self-assembling systems in the presence of audible sound.[1,2] Audible sound-induced liquid vibrations control the dissolution of atmospheric gases (e.g. O2, CO2) into a solution to generate spatiotemporal chemical patterns in the bulk of the fluid, segregating the solution into spatiotemporal domains of different redox or pH environments. This approach also enables the organization of transiently formed supramolecular aggregates in a predictable spatiotemporal manner. This sound strategy has been extended to regulate multistep enzyme reactions,[3] to control the movement of small cargos on the surface of a solution with light,[4] and to segregate oppositely chiral supramolecular polymers in space and time.[5] Details of this work will be presented.

[1] I. Hwang et al, Nat. Chem., 2020, 12, 808.

[2] I. Lee et al, J. Chem. Educ., 2022, 99, 1539.

[3] P. Dhasaiyan, et al, Nat. Commun., 2022, 13, 2372.

[4] S. Choi et al, Chem, 2022, 8, 2192.

[5] S. K. Sen et al, Chem, 2023, 9, 624.

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