文献类型：期刊文献

英文题名：Polymerization of Epoxides via Ring-Opening Coupling on Surfaces

作者：Kang, Li-Xia[1,2];Liu, Jian-Wei[1,2];Li, Shi-Wen[1,2];Li, Can[3,4];Wang, Ying[1,2];Xu, Qian[5];Hu, Jun[5];Ding, Honghe[5];Zhu, Junfa[5];Wang, Shiyong[3,4];Li, Deng-Yuan[1,2];Liu, Pei-Nian[1,2]

机构：[1]East China Univ Sci & Technol, Shanghai Key Lab Funct Mat Chem, Key Lab Adv Mat, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Sch Chem & Mol Engn, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[3]Shanghai Jiao Tong Univ, Minist Educ, Sch Phys & Astron, Key Lab Artificial Struct & Quantum Control,Shenya, Shanghai 200240, Peoples R China;[4]Shanghai Jiao Tong Univ, Tsung Dao Lee Inst, Shanghai 200240, Peoples R China;[5]Univ Sci & Technol China, Natl Synchrotron Radiat Lab, Hefei 230029, Peoples R China

年份：2022

卷号：126

期号：47

起止页码：20049

外文期刊名：JOURNAL OF PHYSICAL CHEMISTRY C

收录：;EI(收录号：20224813173051);WOS:【SCI-EXPANDED(收录号:WOS:000886495500001)】；

基金：This work was supported by the National Natural Science Foundation of China (nos. 21925201, 22272050, 22161160319, and 22002044) , the Shanghai Municipal Science and Technology Qi Ming Xing Project (no. 22QA1403000) , Natural Science Foundation of Shanghai (20ZR1414200) , National Key R&D Program of China (2017YFA0403403) , and the Program for Eastern Scholar Distinguished Professor. We thank the Research Center of Analysis and Test of East China University of Science and Technology for help in the characterization and the Catalysis and Surface Science Endstation at the BL11U beamline in the National Synchrotron Radiation Laboratory (NSRL) for help in the characterizations.

语种：英文

外文关键词：Atomic force microscopy - Chemical bonds - Density functional theory - Ring opening polymerization - Scanning tunneling microscopy - X ray photoelectron spectroscopy

摘要：On-surface covalent polymerization is a powerful tool for the atomically precise synthesis of polymeric materials with interesting properties and functions. Although on-surface covalent polymerization has been achieved with several coupling reactions, ring-opening coupling on surfaces is still rarely used. Herein, we report an unprecedented ring-opening coupling reaction of epoxides on Ag(110) and Ag(111) surfaces and investigate the coupling process using scanning tunneling microscopy, noncontact atomic force microscopy, X-ray photoelectron spectroscopy, and density functional theory calculations. The Ag(110) surface promoted the ring-opening coupling reaction of 1,4-di(oxiran-2-yl)benzene by acting as a template to direct the formation of a zigzag 1,2-ethylene-bridged parylene polyradical oriented in the [1 (1) over bar0] crystallographic direction. In contrast, the ring-opening coupling reaction of the same precursor on the Ag(111) surface formed irregular polymers. Moreover, the ring-opening coupling reaction of 2-([1,1'-biphenyl]-4-yl)oxirane on the Ag(110) surface was proved to involve ring-opening of the ethylene oxide group, C-C coupling, and deoxygenation, whereas C-C coupling was favored along the [1 (1) over bar0] orientation.