NCAFM2023 Programme Booklet

Friday 0940 - 1000

ON SURFACE INVESTIGATION OF ALKANE TRANSFORMATION VIA CHEMICAL BOND IMAGING

Xuechao Li (Presenting) , Haiming Zhang, Lifeng Chi

1 Jiangsu Key Laboratory for Carbon Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, Suzhou, Jiangsu, 215123, China Email: xcli@suda.edu.cn The soaring demand of modern society for materials with extreme physical and chemical properties has inspired the design and synthesis of artificial carbon-based nanostructures. On-surface synthesis, which surmounts the limitation of solubility in solution synthesis, has become a respected modern method to construct molecular nanostructures with novel π-conjugation modes on metal surfaces. In this presentation, I will discuss our recent efforts in selective on-surface reactions of alkanes investigated by chemical bond imaging techniques, including :(1) stereospecificity in the deep dehydrogenation of n-alkanes on Cu(110); (2) strategies to achieve generalized on-surface alkane transformation beyond Cu surfaces; and (3) the possibility to direct transform ethyl groups into ethynyl groups in on-surface synthesized polymers.

on-surface alkane transforma ti on

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References [1] Li, X., Niu, K., Zhang, J., Yu, X., Zhang, H., Wang, Y., Guo, Q., Wang, P., Li, F., Hao, Z., Xu, C., Tang, Y., Xu, Z., Lu, S., Liu, P., Xue, G., Wei, Y., Chi, L., Direct transformation of n-alkane into all-trans conjugated polyene via cascade dehydrogenation. Natl. Sci. Rev. 2021, 8 (10), nwab093. [2] Tang, Y., Ejlli, B., Niu, K., Li, X., Hao, Z., Xu, C., Zhang, H., Rominger, F., Freudenberg, J., Bunz, U. H. F., Muellen, K., Chi, L., On-Surface Debromination of 2,3-Bis(dibromomethyl)- and 2,3-Bis(bromomethyl)naphthalene: Dimerization or Polymerization? Angew. Chem. Int. Ed. 2022, 61 (30), e202204123.

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