周惠久论坛|​邀请讲座人:程正迪 院士-西安交通大学材料科学与工程学院
周惠久论坛|​邀请讲座人:程正迪 院士
2018-06-08 18:23:14

程院士已发表超过500篇学术论文,H指数现在为69,被引用16,000余次;作邀请报告700余次。他曾获多项美国和世界学术领域大奖,包括:美国总统青年科学家奖、美国物理学会John H. Dillon 奖章、北美热分析学会Mettler-Toledo 奖、国际热分析和量热联合协会TA-Instrument奖、美国化学会高分子材料科学与工程分会合作研究奖、美国物理学会高分子物理奖、日本高分子学会国际奖等。

【报告题目】Topological Engineering of Giant Molecules toward Unconventional Structures and Functions

时间: 10:00-12:00 am, Jun. 11th, 2018

地点: 新材料大楼材料学院第一会议室

摘要:Inverse design and inverse thinking are critical steps in the materials genome approach. When we design materials with specific functional properties, we often start with independent building blocks which possess well-defined molecular functions and precise chemical structures. Using “Lego” type of modules, we can then assemble such elemental building blocks together in preferred secondary structures (or packing schemes) to construct materials possessing topologically mandated hierarchical structures with desired functions. In this talk, a unique approach along this design and thinking path will be presented. Various “giant molecules” based on “nano-atoms” are designed and synthesized. “Nano-atoms” refer to shape-persistent molecular nanoparticles (MNPs) such as fullerenes, polyhedral oligomeric silsesquioxanes, polyoxometalates, and folded globular proteins. These “nano-atoms” possess precisely-defined chemical structures, surface functionalities and molecular shapes, serving as elemental units for the precision synthesis of “giant molecules” by methods such as click chemistry and other efficient chemical transformations. These “giant molecules” include, but are not limited to, giant surfactants, giant shape amphiphiles, and giant polyhedra. These “giant molecules” can assemble into diverse higher order building blocks to further construct the thermodynamically stable and metastable hierarchical structures in the bulk, thin-film, and solution. Unconventional nanostructures can be obtained in various environments via sequence/topology mandated assemblies to exhibit specifically desired properties. This approach has provided a versatile platform for engineering nanostructures that are not only scientifically intriguing, but also technologically relevant.

 

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