石墨烯具有的独特二维平面结构和不同寻常的电子特性使得与之相关碳材料的设计和制备也备受关注。构筑二维平面网络并在原子尺度上调控其结构是一个亟待解决的科学难题。因此，自下而上的设计与合成新型二维碳网络具有重要意义。.本项目拟基于石墨炔的拓扑结构提出新型二维π-共轭碳网络，将通过纳米尺度的环状结构单元构筑二维碳网络以考察其结构与功能之间的关系。以四苯基乙烯和六苯基苯等结构基元构筑二维碳网络及其结构单元，采用核磁共振、质谱、吸收和荧光光谱、扫描隧道显微镜等多种研究手段考察其分子结构、凝聚态结构、形貌及性能。同时，将考察二维碳网络的多孔结构对其性能的影响，探索通过多孔二维碳网络制备多孔石墨烯材料的新方法。.本项目的执行将促进新型碳材料的探索与发展，为研究多孔石墨烯等新型碳材料的设计与制备、结构与性能提供实验基础。

Featured with unusual 2D planar carbon networks and extraordinary electronic properties, the design and fabrication of graphene and related carbon materials have drawn numerous interests. However, constructing 2D planar networks and controlling their structure on the atomic scale remain as a challenging field, which also greatly hampered the exploration and development of novel carbon materials. Therefore, the bottom-up design and synthesis of novel 2D carbon materials are of great significance..Synthesizing nano-sized polyphenylene macrocycles and constructing 2D carbon networks based on these cyclic moieties will shed some lights on the relationships between the structure and function of 2D carbon materials, and further promote the manufacture of 2D carbon materials. In this proposal, the research will be aimed at the designing of novel 2D π-conjugated carbon networks based on the topological structure of well-known graphynes, synthesizing the 2D frameworks and their cyclic substructures based on tetraphenylethene and hexaphenylbenzene moieties, and exploring the possibility of fabricating porous graphene materials from these carbon networks. Their molecular geometry, optoelectronic properties, and porous structures will be investigated by using characterization methods, like NMR spectroscopy, mass spectrometry, absorption and fluorescence spectroscopy, STM and BET. Additionally, we will investigate the impacts of porous topology on the performance of carbon materials, and explore the possibility of constructing porous graphene from these 2D carbon networks..This project will study the methodology of building-up 2D π-conjugated carbon networks and their polyphenylene cyclic substructures, and fabricating porous graphene materials, and provide experimental evidence for designing novel carbon materials and investigating their structures and properties.