文献类型：期刊文献

英文题名：Construction of Two-Dimensional Organometallic Coordination Networks with Both Organic Kagome and Semiregular Metal Lattices on Au(111)

作者：Kang, Li-Xia[1];Wang, Bing-Xin[1];Zhang, Xin-Yu[1];Zhu, Ya-Cheng[1];Li, Deng-Yuan[1,2];Liu, Pei-Nian[1,2]

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, State Key Lab Chem Engn, Shanghai Key Lab Funct Mat Chem,Key Lab Adv Mat, Shanghai 200237, Peoples R China;[2]China Pharmaceut Univ, Key Lab Nat Med Dept Med Chem, Nanjing 211198, Peoples R China

年份：2024

卷号：15

期号：23

起止页码：6108

外文期刊名：JOURNAL OF PHYSICAL CHEMISTRY LETTERS

收录：;EI(收录号：20242316220339);WOS:【SCI-EXPANDED(收录号:WOS:001238269800001)】；

基金：This work was supported by the National Natural Science Foundation of China (Nos. 22272050, 21925201, and 22161160319), the Shanghai Municipal Science and Technology Qi Ming Xing Project (No. 22QA1403000), and the Fundamental Research Funds for the Central Universities. We thank the Research Center of Analysis and Testing of East China University of Science and Technology for help in the characterization.

语种：英文

外文关键词：Coordination reactions - Density functional theory - Scanning tunneling microscopy

摘要：Two-dimensional metal-organic networks (2D MONs) having heterogeneous coordination nodes (HCNs) could exhibit excellent performance in catalysis and optoelectronics because of the unbalanced electron distribution of the coordinating metals. Therefore, the design and construction of 2D MONs with HCNs are highly desirable but remain challenging. Here, we report the construction of 2D organometallic coordination networks with an organic Kagome lattice and a semiregular metal lattice on Au(111) via the in situ formation of HCNs. Using a bifunctional precursor 1,4-dibromo-2,5-diisocyanobenzene, the coordination of isocyano with Au adatom on a room-temperature Au(111) yielded metal-organic coordination chains with isocyano-Au-isocyano nodes. In contrast, on a high-temperature Au(111), a selective debromination/coordination cascade reaction occurred, affording 2D organometallic coordination networks with phenyl-Au-isocyano nodes. By combining scanning tunneling microscopy and density functional theory calculations, we determined the structures of coordination products and the nature of coordination nodes, demonstrating a thermodynamically favorable pathway for forming the phenyl-Au-isocyano nodes.