【作者】 蔡亮亮； 孙强； 张弛； 丁元琪； 马红红； 袁春雪； 许维；

【Author】 Liangliang Cai;Qiang Sun;Chi Zhang;Yuanqi Ding;Honghong Ma;Chunxue Yue;Wei Xu;College of Materials Science and Engineering, Tongji University;

【机构】 材料科学与工程学院,同济大学；

【摘要】 近年来,在金属表面通过有机分子化学反应来构建共价纳米结构已然成为表面科学领域新的研究热点。基于这一研究思路,多种化学反应已成功在表面实现,包括Ullmann反应,Bergman环化,脱羧聚合,点击反应,亚胺合成和氮掺杂卡宾杂环的二聚化。其中,烃类化合物由于其在形成新颖的碳纳米结构和材料方面的独特贡献尤为引人关注。利用C-H或C-X（X代表卤素）官能团发生脱氢或脱卤耦合反应为合成新型碳纳米结构提供了一条有效路径。因此,本报告基于烷基链及卤代烷烃分子,探讨其在金属表面上的脱氢/卤耦合反应,通过STM实验和DFT计算揭示其反应路径。^[1,2]更多还原

【Abstract】 Recently, the construction of nanostructures through covalent interlinking of molecular building blocks on metal surfaces has been among the most active subjects of surface science research. Various chemical reactions have been employed on surfaces, including Ullmann reaction, Bergman cyclization, decarboxylative polymerization, azide-alkyne click reaction, imine formation, and dimerization of N-heterocyclic carbenes. In particular, on-surface synthesis involving hydrocarbons has aroused particular attention due to interest in fabricating novel carbon nanostructures and nanomaterials. In this respect, dehydrogenative or dehalogenative homocoupling of reactants with C-H or C-X（X = halogen） groups has proven to be a feasible route. Here, we explored the feasibility of dehydrogenative/dehalogenative homocoupling of alkyl chains/halides on metal surfaces through the interplay of high-resolution scanning tunneling microscopy imaging and density functional theory calculations and revealed their reaction pathways.^[1,2]更多还原