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报告题目 |
Total Structures of Atomically Precise Gold Nanoparticles and Beyond |
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报告时间 |
2016年6月18日下午15 : 30 |
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报告地点 |
化学院环资楼939报告厅 |
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报告人 |
Prof. 金荣超 Carnegie Mellon University |
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报告摘要 |
Determining the total structures of nanoparticles constitutes a major goal in nanoscience research. Gold nanoparticles are particularly attractive due to their extraordinary stability and elegant optical properties. A prerequisite to total structure determination is to obtain atomically precise nanoparticles, which had been a major challenge in the past research and thus hampered the pursuit of fundamental science of nanoparticles. We have recently developed successful methodologies for synthesizing atomically precise gold nanoparticles protected by thiolates (denoted as Aun(SR)m, with n ranging from a few dozens to hundreds). Such ultrasmall nanoparticles (ca. 1-3 nm) exhibit distinct quantum size effects and interesting electronic/optical properties, which are fundamentally different from the plasmon-dominated properties of their larger counterparts (e.g. 5-100 nm nanoparticles). New types of atom-packing structures have been discovered in ultrasmall Aun(SR)m nanoparticles through X-ray crystallographic analysis. These well-defined nanoparticles hold potential in catalysis as new model catalysts, and atomic level structure-reactivity correlation will ultimately offer fundamental understanding on nanocatalysis.
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报告人简介：⑴现在工作单位及职称 ⑵主要研究方向 ⑶学术成就简述（100字以内） Rongchao Jin （金荣超）is a professor in Department of Chemistry at Carnegie Mellon University and associate editor of Nanoscale (Royal Society of Chemistry) .His current research interests are atomically precise nanoparticles, optics of nanoparticles, and catalysis.He has made outstanding achievements in the synthesis and application of new nanomaterials. He has published over 200 papers, including papers published in Science, Nature and other top journals, SCI cited more than 10,000 times. | |
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参加者：所有感兴趣的老师和学生 | |
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主办单位：化学与材料科学学院、微尺度、国际合作与交流部 | |