Atomically Precise Distorted Nanographenes: The Effect of Different Edge Functionalization on the Photophysical Properties down to the Femtosecond Scale
Nanographenes (NGs) have been attracting widespread interest since they combine peculiar properties of graphene with molecular features, such as bright visible photoluminescence. However, our understanding of the fundamental properties of NGs is still hampered by the high degree of heterogeneity usu...
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MDPI AG
2023-01-01
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| Online Access: | https://www.mdpi.com/1996-1944/16/2/835 |
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| author | Marco Reale Alice Sciortino Marco Cannas Ermelinda Maçoas Arthur H. G. David Carlos M. Cruz Araceli G. Campaña Fabrizio Messina |
| author_facet | Marco Reale Alice Sciortino Marco Cannas Ermelinda Maçoas Arthur H. G. David Carlos M. Cruz Araceli G. Campaña Fabrizio Messina |
| author_sort | Marco Reale |
| collection | DOAJ |
| description | Nanographenes (NGs) have been attracting widespread interest since they combine peculiar properties of graphene with molecular features, such as bright visible photoluminescence. However, our understanding of the fundamental properties of NGs is still hampered by the high degree of heterogeneity usually characterizing most of these materials. In this context, NGs obtained by atomically precise synthesis routes represent optimal benchmarks to unambiguously relate their properties to well-defined structures. Here we investigate in deep detail the optical response of three curved hexa-<i>peri</i>-hexabenzocoronene (HBC) derivatives obtained by atomically precise synthesis routes. They are constituted by the same graphenic core, characterized by the presence of a heptagon ring determining a saddle distortion of their sp<sup>2</sup> network, and differ from each other for slightly different edge functionalization. The quite similar structure allows for performing a direct comparison of their spectroscopic features, from steady-state down to the femtosecond scale, and precisely disentangling the role played by the different edge chemistry. |
| first_indexed | 2024-03-09T11:47:32Z |
| format | Article |
| id | doaj.art-6a224107fbb44abab90bbdac2a96102d |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-09T11:47:32Z |
| publishDate | 2023-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-6a224107fbb44abab90bbdac2a96102d2023-11-30T23:18:52ZengMDPI AGMaterials1996-19442023-01-0116283510.3390/ma16020835Atomically Precise Distorted Nanographenes: The Effect of Different Edge Functionalization on the Photophysical Properties down to the Femtosecond ScaleMarco Reale0Alice Sciortino1Marco Cannas2Ermelinda Maçoas3Arthur H. G. David4Carlos M. Cruz5Araceli G. Campaña6Fabrizio Messina7Dipartimento di Fisica e Chimica—Emilio Segrè, Università degli Studi di Palermo, Via Archirafi 36, 90123 Palermo, ItalyDipartimento di Fisica e Chimica—Emilio Segrè, Università degli Studi di Palermo, Via Archirafi 36, 90123 Palermo, ItalyDipartimento di Fisica e Chimica—Emilio Segrè, Università degli Studi di Palermo, Via Archirafi 36, 90123 Palermo, ItalyCentro de Química Estrutural e Institute of Molecular Sciences, Instituto Superior Técnico, Universidade de Lisboa (Portugal), Av. Rovisco Pais 1, 1049-001 Lisboa, PortugalDepartment of Organic Chemistry, Unidad de Excelencia de Química (UEQ), Faculty of Sciences, University of Granada, Avda. Fuente Nueva s/n, 18071 Granada, SpainDepartment of Organic Chemistry, Unidad de Excelencia de Química (UEQ), Faculty of Sciences, University of Granada, Avda. Fuente Nueva s/n, 18071 Granada, SpainDepartment of Organic Chemistry, Unidad de Excelencia de Química (UEQ), Faculty of Sciences, University of Granada, Avda. Fuente Nueva s/n, 18071 Granada, SpainDipartimento di Fisica e Chimica—Emilio Segrè, Università degli Studi di Palermo, Via Archirafi 36, 90123 Palermo, ItalyNanographenes (NGs) have been attracting widespread interest since they combine peculiar properties of graphene with molecular features, such as bright visible photoluminescence. However, our understanding of the fundamental properties of NGs is still hampered by the high degree of heterogeneity usually characterizing most of these materials. In this context, NGs obtained by atomically precise synthesis routes represent optimal benchmarks to unambiguously relate their properties to well-defined structures. Here we investigate in deep detail the optical response of three curved hexa-<i>peri</i>-hexabenzocoronene (HBC) derivatives obtained by atomically precise synthesis routes. They are constituted by the same graphenic core, characterized by the presence of a heptagon ring determining a saddle distortion of their sp<sup>2</sup> network, and differ from each other for slightly different edge functionalization. The quite similar structure allows for performing a direct comparison of their spectroscopic features, from steady-state down to the femtosecond scale, and precisely disentangling the role played by the different edge chemistry.https://www.mdpi.com/1996-1944/16/2/835atomically precise nanographenesfluorescent nanomaterialsdistorted hexa-<i>peri</i>-hexabenzocoronene derivativesoptical properties |
| spellingShingle | Marco Reale Alice Sciortino Marco Cannas Ermelinda Maçoas Arthur H. G. David Carlos M. Cruz Araceli G. Campaña Fabrizio Messina Atomically Precise Distorted Nanographenes: The Effect of Different Edge Functionalization on the Photophysical Properties down to the Femtosecond Scale Materials atomically precise nanographenes fluorescent nanomaterials distorted hexa-<i>peri</i>-hexabenzocoronene derivatives optical properties |
| title | Atomically Precise Distorted Nanographenes: The Effect of Different Edge Functionalization on the Photophysical Properties down to the Femtosecond Scale |
| title_full | Atomically Precise Distorted Nanographenes: The Effect of Different Edge Functionalization on the Photophysical Properties down to the Femtosecond Scale |
| title_fullStr | Atomically Precise Distorted Nanographenes: The Effect of Different Edge Functionalization on the Photophysical Properties down to the Femtosecond Scale |
| title_full_unstemmed | Atomically Precise Distorted Nanographenes: The Effect of Different Edge Functionalization on the Photophysical Properties down to the Femtosecond Scale |
| title_short | Atomically Precise Distorted Nanographenes: The Effect of Different Edge Functionalization on the Photophysical Properties down to the Femtosecond Scale |
| title_sort | atomically precise distorted nanographenes the effect of different edge functionalization on the photophysical properties down to the femtosecond scale |
| topic | atomically precise nanographenes fluorescent nanomaterials distorted hexa-<i>peri</i>-hexabenzocoronene derivatives optical properties |
| url | https://www.mdpi.com/1996-1944/16/2/835 |
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