报告题目：Spectroscopic Studies of Chirality, Chirality Recognition, and Chirality Transfer
报  告 人：徐云杰 教授
报告时间：2014年7月15日9：30
报告地点：化学楼二楼一号会议室
报告人及报告简历：
     Yunjie Xu graduated from Xiamen U. with a B.Sc. in Chemistry and in Applied  Mathematics. After receiving her Ph.D. from UBC with M.C.L. Gerry in 1993, she accepted an NRC Research Associate Fellowship to work with A.R.W. McKellar and T. Amano on IR spectra of weakly bound clusters and ions in Ottawa. In 1996, she moved to Edmonton first as an NSERC and later as a Killam PDF fellow. She started as an assistant professor at the U. of Alberta in 2003 and quickly rose to the rank of full professor in 2010. In 2011, She became a Tier I (Senior) Canada Research Chair in Chirality and Chirality Recognition. Her research focuses on developing new spectroscopic strategies to characterize chirality and chiral recognition. Her group uses high resolution IR laser and microwave spectroscopy, IR multiphoton dissociation spectroscopy, vibrational circular dichroism and Raman optical activity, as well as matrix isolation spectroscopy to study chirality recognition processes and chirality transfer phenomena in the gas phase, insolution and at metal nanoparticles. She has published over 100 refereed research articles in leading scientific journals including Science, Angew. Chem. Int. Ed., J. Am. Chem. Soc., J. Phys. Chem. Lett.and Phys. Rev. Lett.
Abstract:
      Chirality is an intrinsic property ofmost biological molecules and chirality recognition events are at the heart of many biological functions. Our research focuses on applying and developing new spectroscopic tools to determine chirality and to establish chirality recognition models at the molecular level. First, I will present our recent spectroscopic studies of chirality recognition in simple chiral contact pairs.Using both the cavity-based and the free space chirped-pulsed Fourier transform microwave (FTMW) techniques, we analyzed their rotational spectra and identified their conformational preferences. Second, I will discuss spectroscopic investigations of solvation of chiral molecules using both vibrational circular dichroism (VCD) and FTMW spectroscopy.I will discuss the structural aspect of water surrounding a chiral solute molecule, a subject of intense current interest. The link between the gas phase and solution studies and the importance of including the bulk water environment using the polarizable continuum model will also be discussed. Finally, I will show some recent applications ofVCD spectroscopy, such as of natural products and of systems with dihydrogen bonds.