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Wu F, Barragán A, Gallardo A, Yang L, Biswas K, Écija D, Mendieta-Moreno JI, Urgel JI, Ma J, Feng X. Structural Expansion of Cyclohepta[def]fluorene towards Azulene-Embedded Non-Benzenoid Nanographenes. Chemistry 2023; 29:e202301739. [PMID: 37339368 DOI: 10.1002/chem.202301739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 06/20/2023] [Accepted: 06/20/2023] [Indexed: 06/22/2023]
Abstract
Non-benzenoid non-alternant nanographenes (NGs) have attracted increasing attention on account of their distinct electronic and structural features in comparison to their isomeric benzenoid counterparts. In this work, we present a series of unprecedented azulene-embedded NGs on Au(111) during the attempted synthesis of cyclohepta[def]fluorene-based high-spin non-Kekulé structure. Comprehensive scanning tunneling microscopy (STM) and non-contact atomic force microscopy (nc-AFM) evidence the structures and conformations of these unexpected products. The dynamics of the precursor bearing 9-(2,6-dimethylphenyl)anthracene and dihydro-dibenzo-cyclohepta[def]fluorene units and its reaction products on the surface are analyzed by density functional theory (DFT) and molecular dynamics (MD) simulations. Our study sheds light on the fundamental understanding of precursor design for the fabrication of π-extended non-benzenoid NGs on a metal surface.
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Affiliation(s)
- Fupeng Wu
- Max Planck Institute of Microstructure Physics, Weinberg 2, 06120, Halle, Germany
- Center for Advancing Electronics Dresden (cfaed) &, Faculty of Chemistry and Food Chemistry, Technische Universität Dresden, Mommsenstrasse 4, 01062, Dresden, Germany
| | - Ana Barragán
- IMDEA Nanoscience, C/Faraday 9, Campus de Cantoblanco, 28049, Madrid, Spain
| | - Aurelio Gallardo
- IMDEA Nanoscience, C/Faraday 9, Campus de Cantoblanco, 28049, Madrid, Spain
| | - Lin Yang
- Center for Advancing Electronics Dresden (cfaed) &, Faculty of Chemistry and Food Chemistry, Technische Universität Dresden, Mommsenstrasse 4, 01062, Dresden, Germany
| | - Kalyan Biswas
- IMDEA Nanoscience, C/Faraday 9, Campus de Cantoblanco, 28049, Madrid, Spain
| | - David Écija
- IMDEA Nanoscience, C/Faraday 9, Campus de Cantoblanco, 28049, Madrid, Spain
| | - Jesús I Mendieta-Moreno
- Departamento de Física Teórica de la Materia Condensada, Universidad Autónoma de Madrid, 28049, Madrid, Spain
| | - José I Urgel
- IMDEA Nanoscience, C/Faraday 9, Campus de Cantoblanco, 28049, Madrid, Spain
| | - Ji Ma
- Max Planck Institute of Microstructure Physics, Weinberg 2, 06120, Halle, Germany
- Center for Advancing Electronics Dresden (cfaed) &, Faculty of Chemistry and Food Chemistry, Technische Universität Dresden, Mommsenstrasse 4, 01062, Dresden, Germany
| | - Xinliang Feng
- Max Planck Institute of Microstructure Physics, Weinberg 2, 06120, Halle, Germany
- Center for Advancing Electronics Dresden (cfaed) &, Faculty of Chemistry and Food Chemistry, Technische Universität Dresden, Mommsenstrasse 4, 01062, Dresden, Germany
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2
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Toksabay S, Leisegang M, Christ A, Härtl P, Krebs J, Marder TB, Haldar S, Heinze S, Bode M, Krueger A. Controlled Formation of Porous 2D Lattices from C 3 -symmetric Ph 6 -Me-Tribenzotriquinacene-OAc 3. Chemistry 2023; 29:e202203187. [PMID: 36346617 DOI: 10.1002/chem.202203187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Revised: 11/04/2022] [Accepted: 11/07/2022] [Indexed: 11/09/2022]
Abstract
The on-surface self-assembly of molecules to form holey nanographenes is a promising approach to control the properties of the resulting 2D lattice. Usually, planar molecules are utilized to prepare flat, structurally confined molecular layers, with only a few recent examples of warped precursors. However, control of the superstructures is limited thus far. Herein, we report the temperature-controlled self-assembly of a bowl-shaped, acetylated C3 -symmetric hexaphenyltribenzotriquinacene derivative on Cu(111). Combining scanning tunneling microscopy (STM) and density functional theory (DFT) confirms the formation of highly differing arrangements starting with π-stacked bowl-to-bowl dimers at low coverage at room temperature via chiral honeycomb structures, an intermediate trigonal superstructure, followed by a fully carbon-based, flattened hexagonal superstructure formed by on-surface deacetylation, which is proposed as a precursor for holey graphene networks with unique defect structures.
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Affiliation(s)
- Sinem Toksabay
- Institute for Organic Chemistry, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Markus Leisegang
- Physikalisches Institut Experimentelle Physik II, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Andreas Christ
- Physikalisches Institut Experimentelle Physik II, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Patrick Härtl
- Physikalisches Institut Experimentelle Physik II, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Johannes Krebs
- Institute for Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Todd B Marder
- Institute for Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Soumyajyoti Haldar
- Institute of Theoretical Physics and Astrophysics, University of Kiel, Leibnizstrasse 15, 24098, Kiel, Germany
| | - Stefan Heinze
- Institute of Theoretical Physics and Astrophysics, University of Kiel, Leibnizstrasse 15, 24098, Kiel, Germany
| | - Matthias Bode
- Physikalisches Institut Experimentelle Physik II, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany.,Wilhelm Conrad Röntgen-Center for Complex Material Systems (RCCM), Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Anke Krueger
- Institute for Organic Chemistry, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany.,Institute of Organic Chemistry, University of Stuttgart, Pfaffenwaldring 55, 70569, Stuttgart, Germany
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Murata T, Yoshida K, Suzuki S, Ueda A, Nishida S, Kawai J, Fukui K, Sato K, Takui T, Nakasuji K, Morita Y. Double‐σ‐Bonded Close‐Shell Dimers and Peroxy‐Linked Open‐Shell Dimer Derived from a
C
3
Symmetric Trioxophenalenyl Neutral Diradical. Chemistry 2022; 28:e202201426. [DOI: 10.1002/chem.202201426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Indexed: 11/10/2022]
Affiliation(s)
- Tsuyoshi Murata
- Department of Applied Chemistry, Faculty of Engineering Aichi Institute of Technology Yachigusa 1247, Yakusa Toyota Aichi Japan
| | - Kenta Yoshida
- Department of Chemistry Graduate School of Science Osaka University Machikaneyama 1–1 Toyonaka Osaka Japan
| | - Shuichi Suzuki
- Department of Chemistry Graduate School of Engineering Science Osaka University Machikaneyama 1–3 Toyonaka Osaka Japan
| | - Akira Ueda
- Department of Chemistry Faculty of Advanced Science and Technology Kumamoto University 2-39-1 Kurokami Chuo-ku Kumamoto Japan
| | - Shinsuke Nishida
- Department of Applied Chemistry, Faculty of Engineering Aichi Institute of Technology Yachigusa 1247, Yakusa Toyota Aichi Japan
| | - Junya Kawai
- Department of Chemistry Graduate School of Science Osaka University Machikaneyama 1–1 Toyonaka Osaka Japan
| | - Kozo Fukui
- Department of Chemistry Graduate School of Science Osaka University Machikaneyama 1–1 Toyonaka Osaka Japan
| | - Kazunobu Sato
- Department of Chemistry and Molecular Materials Science Graduate School of Science Osaka City University/Osaka Metropolitan University Sugimoto 3–3-138 Sumiyoshi-ku Osaka Japan
| | - Takeji Takui
- Department of Chemistry and Molecular Materials Science Graduate School of Science Osaka City University/Osaka Metropolitan University Sugimoto 3–3-138 Sumiyoshi-ku Osaka Japan
| | - Kazuhiro Nakasuji
- Department of Chemistry Graduate School of Science Osaka University Machikaneyama 1–1 Toyonaka Osaka Japan
| | - Yasushi Morita
- Department of Applied Chemistry, Faculty of Engineering Aichi Institute of Technology Yachigusa 1247, Yakusa Toyota Aichi Japan
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