报告题目：Interfacial Effects in Molecular Devices: From Concept to Function
报告人：郭雪峰博士（北京大学化学与分子工程学院）
报告时间：2012年11月1日（周四）16:00-17:00
报告地点：曹光彪326会议室
报告摘要：
In the scenario of device miniaturization motivated by the limits of the inherent quantum effects of conventional silicon-based devices, a systematic research is that we have developed a reliable and reproducible e-beam lithographic system to covalently wire conjugated molecules into gaps in the range of 1-10 nm on precisely-cut single-walled carbon nanotube (SWNTs) or graphene point contacts through amide linkages. This strategy is robust and allows a wide-variety of single molecules or a small collection of molecules to be tested electrically. On the basis of this methodology, we demonstrated a universal platform of how to utilize the diversities of single molecules with special functions and how to install functionalities on molecule-bridged SWNTs and graphene, allowing the conductance of the single-molecule devices sensitive to external stimuli, such as proton, light, ion, and chemical/biological effects, but also demonstrated a powerful tool of SWNTs or graphenes as ultrasmall point contacts to realize polyacene monolayer and single column transistors, which indicate the interesting chemoresponsive or efficacious light-to-current converting semiconducting properties. These studies apparently provide the deeper understanding of the interplay between molecular structure, assembly, and emergent functions at the molecular level and consequently the novel insights into designing and creating novel molecule-scale optoelectronic devices.
报告人简介：
郭雪峰：北京师范大学学士和硕士（1994, 9-2001, 7: 北京师范大学化学系学士和硕士），中科院化学所博士（2004. 07），哥伦比亚大学纳米中心博士后，北京大学化学学院研究员（2008年1月起），先后获得全国百篇优秀博士论文奖，日本化学年会“The Distinguished Lectureship Award”，北京市科技新星奖，霍英东教育基金奖，中国化学学会青年化学奖。
