二维有序分子聚合结构的表面制备及其电子学性质研究

项目名称： 二维有序分子聚合结构的表面制备及其电子学性质研究

项目编号： No.21473174

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 数理科学和化学

项目作者： 赵爱迪

作者单位： 中国科学技术大学

项目金额： 40万元

中文摘要： 二维聚合结构因其在物理、化学、信息和能源等领域的潜在应用成为当前表面物理化学领域的一个重要研究方向。基于超高真空的方法通过表面上分子的聚合来制备低维纳米结构具有独特的优越性，在近年来得到了迅速发展，然而要制备大面积有序的二维分子聚合结构仍然存在亟待解决的难点。在本申请项目中，我们拟开展基于超高真空技术和扫描隧道显微学的表面二维分子聚合结构的制备和性质研究。我们拟发展新的分子源和超高真空控制手段，解决残留物毒化表面和难以自修复等影响聚合质量的关键问题，通过原位紫外光源等手段，探索新的表面聚合反应路线和机制，以实现大面积有序分子聚合结构。我们拟开展的上述研究将物理方法和化学反应有机结合起来，有望形成一个有特色的表面物理化学研究方向，为阐明表面分子聚合的机制并实现有序的聚合提供研究基础。

中文关键词： 扫描隧道显微学；单分子；锡烯；石墨烯条带；金属有机网格

英文摘要： Two-dimensional (2D) polymerized frameworks have attracted much attention because of their potential applications in physical and chemical sciences, as well as information and energy technologies. On-surface synthesis of low-dimensional nanostructure via polymerization of surface-supported molecules on the basis of ultra-high vacuum (UHV) techniques has been fast developed due to the unique advantages of UHV methods. However, there still have some key problems to be solved before we can get large-area highly-ordered 2D polymerized network. In this proposal, we plan to study the preparation and characterization of on-surface of 2D polymerized molecular framework with the aid of UHV techniques and scanning tunneling microscopy. Surface poision by reaction residue and self-corrected issues which influences the quality of 2D polymerization, are to be studied and solved by developing new source techniques and controlling methods. We will explore new reaction mechanism and routes including ultra-violet radiation etc. to finally realize large-area highly-ordered 2D molecular frameworks. We will also develop methods for isolating and transferring the synthesized 2D framework, and study their electronic properties by making prototype devices. The proposed research will combine physical techniques, chemical reactions and

英文关键词： scanning tunneling microscopy；single molecule；stanene；graphene nanoribbon；metal-organic framework