“2011-iChEM讲座”第15讲:Microdroplet Reactions: A New Frontier in Chemistry

报告题目:Microdroplet Reactions: A New Frontier in Chemistry

报 告 人: Richard N. Zare
     Department of Chemistry, Stanford University, Stanford, California 94305 USA

时    间: 2018年12月8日(周六) 16:00-17:30

地    点: 厦门大学化学化工学院卢嘉锡楼202

My research group has been studying chemical reactions in microdroplets and comparing the findings with the behavior of the same reaction in bulk solution. Our detection method has primarily been high-resolution mass spectrometry, although we also use nuclear magnetic resonance (NMR). Two different experimental setups are employed, one involving fusing together two streams of microdroplets (shown in Fig. l, the panel on the left), the other simply involving desorption electrospray ionization (shown in Fig, 1, the panel on the right):

Figure 1. Two experimental setups used to investigate the chemistry occurring in microdroplets.

One significant advantage of investigating reactions in microdroplets is that this technique allows us to detect and identify fleeting intermediates in complex reactions. Another special feature of microdroplet chemistry is that the rates of some reactions can be accelerated by a factor of 1000 or more! Some speculations will be presented to account for this marked rate enhancement. Microdroplet chemistry is not simply a way to study reactions in bulk solutions but can also present new opportunities, as will be presented, to synthesize molecules and in some cases to make entirely new compounds. Be prepared for some surprises!

Born in 1939 in Cleveland, Ohio, Professor Zare trained in physical and analytical chemistry at Harvard University (B.A. 1961, Ph.D. 1964). His doctoral study under Professor Dudley Herschbach explored photodissociation dynamics. After faculty positions spanning chemistry at the Massachusetts Institute of Technology, chemistry, physics and astrophysics at the University of Colorado, and chemistry at Columbia University, he joined the Stanford chemistry faculty in 1977. He has taught an introductory chemistry class every year since. As a Howard Hughes Medical Institute Professor since 2006, Professor Zare has also developed a course introducing undergraduates to hands-on interdisciplinary research, combining physics, and biology to explore how living systems use molecular interactions with light for vision, photosynthesis and more. Professor Zare served as chair of the Department of Chemistry from 2005 to 2011, and has helped to guide scientific policy as chairman of several national and international science boards. His dedication to research and teaching has been recognized in many awards, including the National Medal of Science, the Wolf Prize in Chemistry, and the Presidential Award for Excellence in Science, Mathematics, and Engineering Mentoring. Among other honors, Professor Zare is a member of the National Academy of Sciences, the American Academy of Arts and Sciences, and the American Philosophical Society. He has also received 11 honorary doctorates.
Please visit the Zarelab website to learn more: http://web.stanford.edu/group/Zarelab/



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