Exploiting cooperative catalysis for the on-surface synthesis of linear heteroaromatic polymers via selective C-H activation

0549986 - FZÚ 2023 RIV DE eng J - Journal Article
Liu, X. - Matěj, Adam - Kratky, T. - Mendieta Moreno, Jesús Ignacio - Günther, S. - Mutombo, Pingo - Decurtins, S. - Aschauer, U. - Repp, J. - Jelínek, Pavel - Liu, S.X. - Patera, L.L.
Exploiting cooperative catalysis for the on-surface synthesis of linear heteroaromatic polymers via selective C-H activation.
Angewandte Chemie - International Edition. Roč. 61, č. 5 (2022), č. článku e202112798. ISSN 1433-7851. E-ISSN 1521-3773
R&D Projects: GA ČR(CZ) GX20-13692X
Grant - others:AV ČR(CZ) AP1601
Program: Akademická prémie - Praemium Academiae
Research Infrastructure: CzechNanoLab - 90110
Institutional support: RVO:68378271
Keywords : nc-AFM * on surface chemistry * polymers * DFT
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 16.6, year: 2022
Method of publishing: Open access

Regiospecific C-H activation is a promising approach to achieve extended polymers with tailored structures. While a recent on-surface synthetic approach has enabled regioselective homocoupling of heteroaromatic molecules, only small oligomers have been achieved. Herein, selective C-H activation for dehydrogenative C-C couplings of hexaazatriphenylene by Scholl reaction is reported for the first time. By combining low-temperature scanning tunneling microscopy (STM) and atomic force microscopy (AFM), we revealed the formation of one-dimensional polymers with a double-chain structure. The details of the growth process are rationalized by density functional theory (DFT) calculations, pointing out a cooperative catalytic action of Na and Ag adatoms in steering the C-H selectivity for the polymerization.
Permanent Link: http://hdl.handle.net/11104/0330434