近年来，金属表面受限的超分子自组装的研究已经被证明能够为人们理解超分子化学提供直接的单分子甚至原子层次的关键信息，这将推动未来有机纳米光电功能材料和器件的发展。有机分子和金属的配位自组装系统结合了有机分子的可设计性和配位键的较高的稳定性及相互识别性，是制备有应用前景的超分子结构的尤为合适的研究体系。但是，当组装系统包含多种组份（分子、金属配位原子）时，多种非共价互作用之间的合作和竞争，其动力学和热力学的相关机制相互影响，这使得如何可控地获得自组装产物成为多组份组装中的难题。本项目拟利用变温超高真空扫描隧道显微镜研究限制在金属表面上的多组份超分子配位自组装。我们将通过设计分子，选择金属配位原子，控制自组装过程等实验手段，力图建立对超分子自组装系统中的多种配位互作用间的自选择、自意识机制的分子分辨上的描述；并在此基础上，实现可控地制备表面多组份超分子纳米结构。

Surface-confined supramolecular self-assembly has been demonstrated to be of importance in fabrication of (nano)optoelectric materials and devices, as well as in understanding supramolecular chemistry in bulk state at molecular level. In recent decades, metal-organic coordination self-assembly has been studied extensively, benefited from the fact that such a self-assembly can be controlled by the rational design of organic ligands, the selection of metals and the regulation of assembly process. Especially, the self-assembly of multi-component (molecules and metal coordination centers) systems is be of key for people to product the multi-functional and tailorable materials or devices. However, to succeed in these heterogeneous metal-organic surface patterns, people have to fully understand the eleaborate balance among interactions of molecule-molecule, molecule-substrate, molecule-metal centers. Of more importance, dynamics or kinetics will play an important role in controlling the self-assembly. Scanning tunneling microscopy working in the ultra-high vacuum (UHV-STM) has been intensively employed on the studies of surface-confined supramolecular self-assembly, since it offers information at molecular/atomic level of these supramolecular systems. In this project, we will utilize the UHV-STM working at variable temperature to investigate the multi-component supramolecular coordination self-assembly composed of designed ligands and metal atoms, aiming to obtain the dynamic and molecule-level insights of this novel supramolecular system, and to achieve a fully control on the multicomponent self-assembly.