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On-surface synthesis of square-type porphyrin tetramers with central antiaromatic cyclooctatetraene moiety
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SYSNO ASEP 0570914 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title On-surface synthesis of square-type porphyrin tetramers with central antiaromatic cyclooctatetraene moiety Author(s) Rascon, E.C. (DE)
Riss, A. (DE)
Matěj, Adam (FZU-D) ORCID
Wiengarten, A. (DE)
Mutombo, Pingo (FZU-D) RID, ORCID
Soler Polo, Diego Manuel (FZU-D)
Jelínek, Pavel (FZU-D) RID, ORCID
Auwärter, W. (DE)Number of authors 8 Source Title Journal of the American Chemical Society. - : American Chemical Society - ISSN 0002-7863
Roč. 145, č. 2 (2023), s. 967-977Number of pages 11 s. Language eng - English Country US - United States Keywords on-surface synthesis ; DFT ; CAS ; SPM Subject RIV BM - Solid Matter Physics ; Magnetism OECD category Condensed matter physics (including formerly solid state physics, supercond.) R&D Projects GX20-13692X GA ČR - Czech Science Foundation (CSF) LM2018110 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Research Infrastructure e-INFRA CZ - 90140 - CESNET, zájmové sdružení právnických osob Method of publishing Limited access Institutional support FZU-D - RVO:68378271 UT WOS 000907023500001 EID SCOPUS 85145473927 DOI 10.1021/jacs.2c10088 Annotation The synthesis of two-dimensionally extended polycyclic heteroatomic molecules keeps attracting considerable attention. In particular, frameworks bearing planar cyclooctatetraenes (COT) moieties can display intriguing properties, including antiaromaticity. Here, we present an on-surface chemistry route to square-type porphyrin tetramers with a central COT ring, coexisting with other oligomers. This approach employing temperature-induced dehydrogenative porphyrin homocoupling in an ultrahigh vacuum environment provides access to surface-supported, unsubstituted porphyrin tetramers that are not easily achievable by conventional synthesis means. Specifically, monomeric free-base (2H-P) and Zn-metalated (Zn-P) porphines (P) were employed to form square type free-base and Zn-functionalized tetramers on Ag(100). An atomic level characterization by bond-resolved atomic force microscopy and scanning tunneling microscopy and spectroscopy is provided, identifying the molecular structures. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2024 Electronic address https://doi.org/10.1021/jacs.2c10088
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