Defect-Induced π-Magnetism into Non-Benzenoid Nanographenes
The synthesis of nanographenes (NGs) with open-shell ground states have recently attained increasing attention in view of their interesting physicochemical properties and great prospects in manifold applications as suitable materials within the rising field of carbon-based magnetism. A potential rou...
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MDPI AG
2022-01-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/12/2/224 |
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| author | Kalyan Biswas Lin Yang Ji Ma Ana Sánchez-Grande Qifan Chen Koen Lauwaet José M. Gallego Rodolfo Miranda David Écija Pavel Jelínek Xinliang Feng José I. Urgel |
| author_facet | Kalyan Biswas Lin Yang Ji Ma Ana Sánchez-Grande Qifan Chen Koen Lauwaet José M. Gallego Rodolfo Miranda David Écija Pavel Jelínek Xinliang Feng José I. Urgel |
| author_sort | Kalyan Biswas |
| collection | DOAJ |
| description | The synthesis of nanographenes (NGs) with open-shell ground states have recently attained increasing attention in view of their interesting physicochemical properties and great prospects in manifold applications as suitable materials within the rising field of carbon-based magnetism. A potential route to induce magnetism in NGs is the introduction of structural defects, for instance non-benzenoid rings, in their honeycomb lattice. Here, we report the on-surface synthesis of three open-shell non-benzenoid NGs (<b>A<sub>1</sub></b>, <b>A<sub>2</sub></b> and <b>A<sub>3</sub></b>) on the Au(111) surface. <b>A<sub>1</sub></b> and <b>A<sub>2</sub></b> contain two five- and one seven-membered rings within their benzenoid backbone, while <b>A<sub>3</sub></b> incorporates one five-membered ring. Their structures and electronic properties have been investigated by means of scanning tunneling microscopy, noncontact atomic force microscopy and scanning tunneling spectroscopy complemented with theoretical calculations. Our results provide access to open-shell NGs with a combination of non-benzenoid topologies previously precluded by conventional synthetic procedures. |
| first_indexed | 2024-03-10T00:49:09Z |
| format | Article |
| id | doaj.art-9cd72c41b1cf4f1aaee4b4892e30ea3d |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-10T00:49:09Z |
| publishDate | 2022-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-9cd72c41b1cf4f1aaee4b4892e30ea3d2023-11-23T14:54:55ZengMDPI AGNanomaterials2079-49912022-01-0112222410.3390/nano12020224Defect-Induced π-Magnetism into Non-Benzenoid NanographenesKalyan Biswas0Lin Yang1Ji Ma2Ana Sánchez-Grande3Qifan Chen4Koen Lauwaet5José M. Gallego6Rodolfo Miranda7David Écija8Pavel Jelínek9Xinliang Feng10José I. Urgel11IMDEA Nanoscience, C/Faraday 9, Campus de Cantoblanco, 28049 Madrid, SpainCenter for Advancing Electronics, Faculty of Chemistry and Food Chemistry, Technical University of Dresden, 01062 Dresden, GermanyCenter for Advancing Electronics, Faculty of Chemistry and Food Chemistry, Technical University of Dresden, 01062 Dresden, GermanyIMDEA Nanoscience, C/Faraday 9, Campus de Cantoblanco, 28049 Madrid, SpainInstitute of Physics of the Czech Academy of Science, CZ-16253 Praha, Czech RepublicIMDEA Nanoscience, C/Faraday 9, Campus de Cantoblanco, 28049 Madrid, SpainInstituto de Ciencia de Materiales de Madrid, CSIC, Cantoblanco, 28049 Madrid, SpainIMDEA Nanoscience, C/Faraday 9, Campus de Cantoblanco, 28049 Madrid, SpainIMDEA Nanoscience, C/Faraday 9, Campus de Cantoblanco, 28049 Madrid, SpainInstitute of Physics of the Czech Academy of Science, CZ-16253 Praha, Czech RepublicCenter for Advancing Electronics, Faculty of Chemistry and Food Chemistry, Technical University of Dresden, 01062 Dresden, GermanyIMDEA Nanoscience, C/Faraday 9, Campus de Cantoblanco, 28049 Madrid, SpainThe synthesis of nanographenes (NGs) with open-shell ground states have recently attained increasing attention in view of their interesting physicochemical properties and great prospects in manifold applications as suitable materials within the rising field of carbon-based magnetism. A potential route to induce magnetism in NGs is the introduction of structural defects, for instance non-benzenoid rings, in their honeycomb lattice. Here, we report the on-surface synthesis of three open-shell non-benzenoid NGs (<b>A<sub>1</sub></b>, <b>A<sub>2</sub></b> and <b>A<sub>3</sub></b>) on the Au(111) surface. <b>A<sub>1</sub></b> and <b>A<sub>2</sub></b> contain two five- and one seven-membered rings within their benzenoid backbone, while <b>A<sub>3</sub></b> incorporates one five-membered ring. Their structures and electronic properties have been investigated by means of scanning tunneling microscopy, noncontact atomic force microscopy and scanning tunneling spectroscopy complemented with theoretical calculations. Our results provide access to open-shell NGs with a combination of non-benzenoid topologies previously precluded by conventional synthetic procedures.https://www.mdpi.com/2079-4991/12/2/224on-surface synthesisnanomagnetismpolycyclic aromatic hydrocarbonsnanographenesopen-shell characterSTM |
| spellingShingle | Kalyan Biswas Lin Yang Ji Ma Ana Sánchez-Grande Qifan Chen Koen Lauwaet José M. Gallego Rodolfo Miranda David Écija Pavel Jelínek Xinliang Feng José I. Urgel Defect-Induced π-Magnetism into Non-Benzenoid Nanographenes Nanomaterials on-surface synthesis nanomagnetism polycyclic aromatic hydrocarbons nanographenes open-shell character STM |
| title | Defect-Induced π-Magnetism into Non-Benzenoid Nanographenes |
| title_full | Defect-Induced π-Magnetism into Non-Benzenoid Nanographenes |
| title_fullStr | Defect-Induced π-Magnetism into Non-Benzenoid Nanographenes |
| title_full_unstemmed | Defect-Induced π-Magnetism into Non-Benzenoid Nanographenes |
| title_short | Defect-Induced π-Magnetism into Non-Benzenoid Nanographenes |
| title_sort | defect induced π magnetism into non benzenoid nanographenes |
| topic | on-surface synthesis nanomagnetism polycyclic aromatic hydrocarbons nanographenes open-shell character STM |
| url | https://www.mdpi.com/2079-4991/12/2/224 |
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