Exploiting Cooperative Catalysis for the On���surface Synthesis of Linear Heteroaromatic Polymers via Selective C���H Activation
| Autor: | Jesús I. Mendieta-Moreno, Pingo Mutombo, Sebastian Günther, Laerte L. Patera, Tim Kratky, Silvio Decurtins, Xunshan Liu, Pavel Jelínek, Jascha Repp, Ulrich Aschauer, Adam Matej, Shi-Xia Liu |
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| Rok vydání: | 2021 |
| Předmět: |
chemistry.chemical_classification
Materials science 010405 organic chemistry General Chemistry Polymer 010402 general chemistry 01 natural sciences Combinatorial chemistry Catalysis 0104 chemical sciences law.invention Scholl reaction chemistry Polymerization law 540 Chemistry Molecule 570 Life sciences biology Density functional theory Scanning tunneling microscope Selectivity |
| Zdroj: | Liu, Xunshan; Matej, Adam; Kratky, Tim; Mendieta-Moreno, Jesús I.; Günther, Sebastian; Mutombo, Pingo; Decurtins, Silvio; Aschauer, Ulrich; Repp, Jascha; Jelinek, Pavel; Liu, Shi-Xia; Patera, Laerte L. (2022). Exploiting Cooperative Catalysis for the On-surface Synthesis of Linear Heteroaromatic Polymers via Selective C-H Activation. Angewandte Chemie (International ed.), 61(5), e202112798. Wiley-VCH 10.1002/anie.202112798 |
| DOI: | 10.48350/161291 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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