新加坡国立大学徐清华博士讲座
来源：浙江大学化学系
发布时间：2010-06-01
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报告题目：Conjugated Polymers as One- and Two-Photon Light Harvesting Materials for Biological Applications
报告人：徐清华
报告时间：2010年6月2日（星期三）上午10：30
报告地点：玉泉教八—218室
欢迎各位老师和同学积极参加
Qing-Hua Xu obtained his BS in Zhejiang University (1993), and MS from Beijing University (1996) and University of Chicago (1997). He received his Ph.D. from UC Berkeley (Advisor: Prof. Graham R. Fleming) in 2001. He conducted his postdoctoral research at Stanford University (Advisor: Prof. Michael D. Fayer) and UC Santa Barbara (Advisor: Prof. Alan J. Heeger) before he joined National University of Singapore as an assistant professor in 2005. His primary research interest is the development and application of novel temporally and spatially resolved optical spectroscopic and imaging methods to study low-dimensional materials such as conjugated polymers and nanocrystalline materials in aim of understanding their structure-dynamics-function relationship. For more information about the research in his group, please visit：
内容简介：
Conjugated polymers are novel low-dimensional materials with many interesting optical and electronic properties. Particularly conjugated polymers display optical amplification effect via fluorescence resonance energy transfer (FRET). They can thus be used as light harvesting complex to develop various light based applications with enhanced efficiency. Conjugated polymers also have large two-photon absorption cross sections compared to the small molecule counterpart. They can thus also be used as two-photon excitation light harvesting materials. In this presentation, I will discuss a few applications using cationic conjugated polymers: 1). Label free DNA sequence detection with enhanced sensitivity and further improved selectivity; 2). Label free detection of metal ions with enhanced sensitivity; 3). Two-photon excitation fluorescence energy transfer; 4). Enhanced one-photon and two-photon excitation emission of photosensitizers, which may have implications in two-photon sensing and phototherapy.
浙江大学化学系
2010年5月28日