报告题目：Simple Chemistry for Complex Nanomaterials
报告人: Younan Xia 教授
Department of Biomedical Engineering, School of Chemistry and Biochemistry
Georgia Institute of Technology, Atlanta, GA 30332, USA
地点: 独墅湖校区907号楼1101报告厅
时间: 2012年06月04日上午10:00-11:30
欢迎感兴趣的师生踊跃参加！
Younan Xia is the Brock Family Chair and GRA Eminent Scholar in Nanomedicine in the Department of Biomedical Engineering at Georgia Institute of Technology. He also holds a joint appointment in the School of Chemistry and Biochemistry.
His research interests include development of new methodologies for controlling the synthesis of nanomaterials and exploration of their applications in biomedical and energy research. He received a Ph.D. degree in physical chemistry from Harvard University (with Professor George M. Whitesides) in 1996. He has received a number of awards, including MRS Fellow (2009); NIH Director's Pioneer Award (2006); ACS Leo Hendrik Baekeland Award (2005); Camille Dreyfus Teacher Scholar (2002); David and Lucile Packard Fellow in Science and Engineering (2000); NSF CAREER Award (2000); Alfred P. Sloan Research Fellow (2000); ACS Victor K. LaMer Award (1999); and Camille and Henry Dreyfus New Faculty Award (1997). He has co-authored more than 480 publications in peer-reviewed journals. He was ranked a Top 10 Chemist and Materials Scientist based on the number of citation per paper. He is an Associate Editor of Nano Letters.
Abstract
The first documented synthesis of nanocrystals can be traced back to the beautiful work by Michael Faraday in 1856 when he demonstrated the preparation of gold colloids with a ruby color. Ever since, many different methods have been developed for preparing nanocrystals, but essentially all the products were troubled by problems such as irregular shapes, broad size distributions, and poorly defined morphologies. Only within the last decade has it become possible to generate nanocrystals with the quality, quantity, and reproducibility needed for a systematic study on their properties as a function of size, shape, and structure. I will briefly cover some of these developments in this talk, with a focus on solution-phase syntheses of noble-metal nanocrystals. While the synthetic methods only involve simple redox reactions, we have been working diligently to understand the complex physics behind the simple chemistry – that is, the nucleation and growth mechanisms leading to the formation of nanocrystals with well-controlled sizes, shapes and properties. The success of these syntheses has enabled us to tailor the plasmonic and catalytic properties of noble-metal nanocrystals for a range of applications including photonics, sensing, imaging, biomedicine, catalysis, and fuel cell technology.
应用化学研究所
博彩平台
2012-05-31
