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An P, Li R, Ma B, He R, Zhang Y, Xiao M, Zhang B. Azepine‐ or Azocine‐Embedded Hexabenzocoronene Derivatives as Nitrogen‐Doped Saddle or Saddle‐Helix Nanographenes. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202110538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Peng An
- School of Chemical Science and Technology Yunnan University Kunmimg 650500 P. R. China
| | - Ranran Li
- School of Chemical Science and Technology Yunnan University Kunmimg 650500 P. R. China
| | - Bin Ma
- School of Chemical Science and Technology Yunnan University Kunmimg 650500 P. R. China
| | - Run‐Ying He
- School of Chemical Science and Technology Yunnan University Kunmimg 650500 P. R. China
| | - Yi‐Kang Zhang
- School of Chemical Science and Technology Yunnan University Kunmimg 650500 P. R. China
| | - Ming‐Jun Xiao
- School of Chemical Science and Technology Yunnan University Kunmimg 650500 P. R. China
| | - Bin Zhang
- School of Chemical Science and Technology Yunnan University Kunmimg 650500 P. R. China
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An P, Li R, Ma B, He RY, Zhang YK, Xiao MJ, Zhang B. Azepine- or Azocine-Embedded Hexabenzocoronene Derivatives as Nitrogen-Doped Saddle or Saddle-Helix Nanographenes. Angew Chem Int Ed Engl 2021; 60:24478-24483. [PMID: 34528358 DOI: 10.1002/anie.202110538] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Revised: 09/07/2021] [Indexed: 11/06/2022]
Abstract
Two novel nitrogen-doped, hexa-peri-hexabenzocoronene (HBC)-based nanographenes (NGs) 1 and 2 bearing an azepine and an azocine at the fjord region, respectively, were synthesized and characterized. Notably, structure 1 was synthesized by Diels-Alder reaction of cyclic alkene and tetrachlorothiophene-S,S-dioxide, followed by Suzuki-Miyaura cross-coupling and Scholl-type reactions, which represents a modified strategy to construct NGs. The azo-heptagon-embedded NG 1 leads to a saddle shape, and the azo-octagon-embedded NG 2 exhibits a distorted saddle-helix conformation with the largest torsion angle recorded so far in [5]helicenes. As a result, the different structural topographies for NGs 1 and 2 lead to significant changes in the optical properties including UV absorption and fluorescent emission. Additionally, the 8π-heterocycles azepine and azocine in the NGs 1 and 2 exhibited obvious antiaromatic properties.
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Affiliation(s)
- Peng An
- School of Chemical Science and Technology, Yunnan University, Kunmimg, 650500, P. R. China
| | - Ranran Li
- School of Chemical Science and Technology, Yunnan University, Kunmimg, 650500, P. R. China
| | - Bin Ma
- School of Chemical Science and Technology, Yunnan University, Kunmimg, 650500, P. R. China
| | - Run-Ying He
- School of Chemical Science and Technology, Yunnan University, Kunmimg, 650500, P. R. China
| | - Yi-Kang Zhang
- School of Chemical Science and Technology, Yunnan University, Kunmimg, 650500, P. R. China
| | - Ming-Jun Xiao
- School of Chemical Science and Technology, Yunnan University, Kunmimg, 650500, P. R. China
| | - Bin Zhang
- School of Chemical Science and Technology, Yunnan University, Kunmimg, 650500, P. R. China
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García-Rodeja Y, Solà M, Bickelhaupt FM, Fernández I. Reactivity and Selectivity of Bowl-Shaped Polycyclic Aromatic Hydrocarbons: Relationship to C60. Chemistry 2015; 22:1368-78. [DOI: 10.1002/chem.201502248] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2015] [Indexed: 11/05/2022]
Affiliation(s)
- Yago García-Rodeja
- Departamento de Química Orgánica; Facultad de Química; Universidad Complutense; 28040 Madrid Spain), Fax: (+34)913944310
| | - Miquel Solà
- Institut de Química Computacional and Departament de Química; Universitat de Girona, Campus Montilivi; 17071 Girona Spain
| | - F. Matthias Bickelhaupt
- Department of Theoretical Chemistry and Amsterdam; Center for Multiscale Modeling (ACMM); VU University; De Boelelaan 1083 1081 HV Amsterdam The Netherlands
- Institute for Molecules and Materials (IMM); Radboud University Nijmegen; Heyendaalseweg 135 6525 AJ Nijmegen The Netherlands
| | - Israel Fernández
- Departamento de Química Orgánica; Facultad de Química; Universidad Complutense; 28040 Madrid Spain), Fax: (+34)913944310
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Treitel N, Sheradsky T, Peng L, Scott LT, Rabinovitz M. C30H126−: Self-Aggregation, High Charge Density, and Pyramidalization in a Supramolecular Structure of a Supercharged Hemifullerene. Angew Chem Int Ed Engl 2006. [DOI: 10.1002/ange.200503542] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Treitel N, Sheradsky T, Peng L, Scott LT, Rabinovitz M. C30H126−: Self-Aggregation, High Charge Density, and Pyramidalization in a Supramolecular Structure of a Supercharged Hemifullerene. Angew Chem Int Ed Engl 2006; 45:3273-7. [PMID: 16619324 DOI: 10.1002/anie.200503542] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Noach Treitel
- Department of Organic Chemistry and Lise Meitner-Minerva Center for Computational Quantum Chemistry, Safra Campus, Hebrew University of Jerusalem, Givat Ram, Jerusalem 91904, Israel
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Tchebotareva N, Yin X, Watson MD, Samorì P, Rabe JP, Müllen K. Ordered architectures of a soluble hexa-peri-hexabenzocoronene-pyrene dyad: thermotropic bulk properties and nanoscale phase segregation at surfaces. J Am Chem Soc 2003; 125:9734-9. [PMID: 12904039 DOI: 10.1021/ja028609i] [Citation(s) in RCA: 83] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
An alkylated hexa-peri-hexabenzocoronene with a covalently tethered pyrene unit serves as a model to study self-assembling discotic pi-system dyads both in the bulk and at a surface. Wide-angle X-ray scattering, polarized light microscopy, and differential scanning calorimetry revealed bulk self-assembly into columnar structures. Relative to a control without a tethered pyrene, the new dyad exhibits a more ordered columnar phase at room temperature but with dramatically lowered isotropization temperature, facilitating homeotropic alignment. These two features are important for processing such materials into molecular electronic devices, e.g., photovoltaic diodes. Scanning tunneling microscopy at a solution-solid interface revealed uniform nanoscale segregation of the large from the small pi-systems, leading to a well-defined two-dimensional crystalline monolayer, the likes of which may be employed in the future to study intramolecular electron transfer processes at surfaces, on the molecular scale.
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Affiliation(s)
- Natalia Tchebotareva
- Max-Planck-Institute for Polymer Research, Postfach 3148, D-55021 Mainz, Germany
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Samorí P, Fechtenkötter A, Jäckel F, Böhme T, Müllen K, Rabe JP. Supramolecular staircase via self-assembly of disklike molecules at the solid-liquid interface. J Am Chem Soc 2001; 123:11462-7. [PMID: 11707124 DOI: 10.1021/ja0111380] [Citation(s) in RCA: 77] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A series of soluble hexabenzocoronene (HBC) derivatives with pendant optically active (S)-3,7-dimethyloctanyl and (R,S)-3,7-dimethyloctanyl (mixture of stereoisomers) hydrocarbon side chains with and without a phenylene spacer were assembled into differently ordered arrays at the interface between a solution and the basal plane of highly oriented pyrolytic graphite (HOPG). Molecularly resolved scanning tunneling microscopy (STM) images revealed that all derivatives self-assemble into oriented crystals in quasi-two dimensions. However, while for the alkyl-substituted HBCs (1,4) all of the single aromatic cores within a monolayer exhibit the same contrast in the STM, the single aromatic cores with a phenylene group between the alkyl side chains and the aromatic core (2a,2b,3) exhibit different contrasts within a monolayer. For the disks carrying racemic branched or n-alkyl side chains (2b,3) a random distribution of the two different contrasts within the 2D-crystal is observed, while the optically active phenylene-alkyl-substituted HBC (2a) exhibits a periodical distribution of three contrasts within the monolayer. We attribute the different contrasts of the aromatic cores in the presence of the phenylene groups to a loss of the planarity of the whole molecule and different conformations, which allow the conjugated disks to attain different equilibrium positions above the surface of HOPG. In the case of the optically active side chains a regular superstructure with three distinctly different positions such as in a staircase is attained. The self-assembly processes are governed by the interplay of intramolecular as well as intermolecular and interfacial interactions. In the present case, the interactions may induce both the molecules to acquire well distinct positions along the z axis and to adopt different conformations. The reported results open new avenues of exploration. For instance, the different couplings of conjugated molecules with the substrate at different separations can be investigated by means of scanning tunneling spectroscopy (STS). Furthermore, experiments on the STM tip-induced switching of single molecules embedded in a monolayer appear feasible.
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Affiliation(s)
- P Samorí
- Department of Physics, Humboldt University Berlin, Invalidenstrasse 110, 10115 Berlin, Germany
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Abstract
New perylene chromophores, phenyl-substituted diindeno[1,2,3-cd:1',2',3'-lm]perylenes 5a,b and 4,4',7,7'-tetraphenyldiacenaphtho[1,2-k:1',2',k']diindeno[1,2,3-cd:1',2',3'-me]perylenes 22a,b, have been synthesized from substituted fluoranthene derivatives 3a,b and 4a,b by means of a surprisingly simple oxidative cyclodehydrogenation reaction. The resulting chromophores, when substituted with alkyl chains at the periphery, show good solubility in organic solvents, and a full characterization of the novel red, green, and blue dyes by field-desorption mass spectrometry, UV/Vis and 1H and 13C NMR spectroscopy becomes possible.
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Affiliation(s)
- M Wehmeier
- Max-Planck-Institut für Polymerforschung, Mainz, Germany
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Dötz F, Brand JD, Ito S, Gherghel L, Müllen K. Synthesis of Large Polycyclic Aromatic Hydrocarbons: Variation of Size and Periphery. J Am Chem Soc 2000. [DOI: 10.1021/ja000832x] [Citation(s) in RCA: 150] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Florian Dötz
- Contribution from the *Max-Planck-Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Johann Diedrich Brand
- Contribution from the *Max-Planck-Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Shunji Ito
- Contribution from the *Max-Planck-Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Lileta Gherghel
- Contribution from the *Max-Planck-Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Klaus Müllen
- Contribution from the *Max-Planck-Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
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Rubin Y. Organic Approaches to Endohedral Metallofullerenes: Cracking Open or Zipping Up Carbon Shells? Chemistry 1997. [DOI: 10.1002/chem.19970030705] [Citation(s) in RCA: 156] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Hagen S, Bratcher MS, Erickson MS, Zimmermann G, Scott LT. Neue Synthesen von drei schalenförmigen aromatischen C30H12-Kohlenwasserstoffen. Angew Chem Int Ed Engl 1997. [DOI: 10.1002/ange.19971090426] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Wiersum U. The Formation of Polycyclic Aromatics, Fullerenes and Soot in Combustion. The Mechanism and the Environmental Connection. Polycycl Aromat Compd 1996. [DOI: 10.1080/10406639608544678] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Boese R, Bräunlich G, Gotteland JP, Hwang JT, Troll C, Vollhardt KPC. Metallierte Tetra- und Penta(cyclopentadienyl)-cyclopentadienyle: Synthese durch Pd-katalysierte Mehrfach-Cyclopentadienylierung. Angew Chem Int Ed Engl 1996. [DOI: 10.1002/ange.19961080927] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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