1
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Tanaka Y, Tajima K, Kusumoto R, Kobori Y, Fukui N, Shinokubo H. End-to-End Bent Perylene Bisimide Cyclophanes by Double Sulfur Extrusion. J Am Chem Soc 2024; 146:16332-16339. [PMID: 38813992 PMCID: PMC11177258 DOI: 10.1021/jacs.4c05358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2024] [Revised: 05/21/2024] [Accepted: 05/23/2024] [Indexed: 05/31/2024]
Abstract
Bending inherently planar π-cores consisting of only six-membered rings has traditionally been challenging because a powerful transformation is required to compensate for the significant strain energy associated with bending. Herein, we demonstrate that sulfur extrusion can achieve substantial molecular bending of a perylene structure to form a substructure of a Vögtle belt, a proposed yet hitherto elusive carbon nanotube fragment. Bent perylene bisimide (PBI) derivatives were synthesized through a double-sulfur-extrusion reaction from the corresponding sulfur-containing V-shaped precursors with an internal alkyl tether. The effect of bending the inherently planar PBI core, which is a recent topic of interest for the design of advanced organic electronic and optoelectronic materials, was investigated systematically. Increasing the curvature leads to a red shift in the absorption and emission spectra, while the fluorescence quantum yields remain high. This stands in contrast with the nonemissive features of previously reported nonplanar PBI derivatives based on conjugative tethers. Detailed photophysical measurements indicated that the increasing curvature with shorter alkyl tethers (i) slightly facilitates intersystem crossing and (ii) significantly suppresses the internal conversion in the excited state of the present bent PBI derivatives. The latter characteristics originate from the restricted dynamic motion associated with the charge-transfer (CT) character between the core chromophores and the N-aryl units.
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Affiliation(s)
- Yuki Tanaka
- Department
of Molecular and Macromolecular Chemistry, Graduate School of Engineering,
and Integrated Research Consortium on Chemical Science (IRCCS), Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8603, Japan
| | - Keita Tajima
- Department
of Molecular and Macromolecular Chemistry, Graduate School of Engineering,
and Integrated Research Consortium on Chemical Science (IRCCS), Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8603, Japan
| | - Ryota Kusumoto
- Department
of Chemistry, Graduate School of Science, Kobe University, 1-1,
Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan
| | - Yasuhiro Kobori
- Department
of Chemistry, Graduate School of Science, Kobe University, 1-1,
Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan
- Molecular
Photoscience Research Center, Kobe University, 1-1, Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan
- CREST,
JST, Honcho 4-1-8, Kawaguchi ,Saitama332-0012, Japan
| | - Norihito Fukui
- Department
of Molecular and Macromolecular Chemistry, Graduate School of Engineering,
and Integrated Research Consortium on Chemical Science (IRCCS), Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8603, Japan
- PRESTO,
Japan Science and Technology Agency (JST), Kawaguchi ,Saitama332-0012, Japan
| | - Hiroshi Shinokubo
- Department
of Molecular and Macromolecular Chemistry, Graduate School of Engineering,
and Integrated Research Consortium on Chemical Science (IRCCS), Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8603, Japan
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2
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David AG, Mañas-Torres MC, Codesal MD, López-Sicilia I, Martín-Romero MT, Camacho L, Cuerva JM, Blanco V, Giner-Casares JJ, Álvarez de Cienfuegos L, Campaña AG. Supramolecular Large Nanosheets Assembled at Air/Water Interfaces and in Solution from Amphiphilic Heptagon-Containing Nanographenes. J Org Chem 2024; 89:163-173. [PMID: 38087461 PMCID: PMC10777395 DOI: 10.1021/acs.joc.3c01854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Revised: 11/07/2023] [Accepted: 11/28/2023] [Indexed: 01/06/2024]
Abstract
We report the synthesis of a new set of amphiphilic saddle-shaped heptagon-containing polycyclic aromatic hydrocarbons (PAHs) functionalized with tetraethylene glycol chains and their self-assembly into large two-dimensional (2D) polymers. An in-depth analysis of the self-assembly mechanism at the air/water interface has been carried out, and the proposed arrangement models are in good agreement with the molecular dynamics simulations. Quite remarkably, the number and disposition of the tetraethylene glycol chains significantly influence the disposition of the PAHs at the interface and conditionate their packing under pressure. For the three compounds studied, we observed three different behaviors in which the aromatic core is parallel, perpendicular, and tilted with respect to the water surface. We also show that these curved PAHs are able to self-assemble in solution into remarkably large sheets of up to 150 μm2. These results show the relationship, within a family of curved nanographenes, between the monomer configuration and their self-assembly capacity in air/water interfaces and organic-water mixtures.
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Affiliation(s)
- Arthur
H. G. David
- Departamento
de Química Orgánica, Facultad de Ciencias, Unidad de
Excelencia Química Aplicada a Biomedicina y Medioambiente, Universidad de Granada, Avda. Fuente Nueva, s/n, 18071 Granada, Spain
| | - Mari C. Mañas-Torres
- Departamento
de Química Orgánica, Facultad de Ciencias, Unidad de
Excelencia Química Aplicada a Biomedicina y Medioambiente, Universidad de Granada, Avda. Fuente Nueva, s/n, 18071 Granada, Spain
| | - Marcos D. Codesal
- Departamento
de Química Orgánica, Facultad de Ciencias, Unidad de
Excelencia Química Aplicada a Biomedicina y Medioambiente, Universidad de Granada, Avda. Fuente Nueva, s/n, 18071 Granada, Spain
| | - Irene López-Sicilia
- Departamento
de Química Física y T. Aplicada, Instituto Químico
para la Energía y Medioambiente IQUEMA, Facultad de Ciencias, Universidad de Córdoba, Campus de Rabanales, Ed. Marie Curie, E-14071 Córdoba, Spain
| | - María T. Martín-Romero
- Departamento
de Química Física y T. Aplicada, Instituto Químico
para la Energía y Medioambiente IQUEMA, Facultad de Ciencias, Universidad de Córdoba, Campus de Rabanales, Ed. Marie Curie, E-14071 Córdoba, Spain
| | - Luis Camacho
- Departamento
de Química Física y T. Aplicada, Instituto Químico
para la Energía y Medioambiente IQUEMA, Facultad de Ciencias, Universidad de Córdoba, Campus de Rabanales, Ed. Marie Curie, E-14071 Córdoba, Spain
| | - Juan M. Cuerva
- Departamento
de Química Orgánica, Facultad de Ciencias, Unidad de
Excelencia Química Aplicada a Biomedicina y Medioambiente, Universidad de Granada, Avda. Fuente Nueva, s/n, 18071 Granada, Spain
| | - Victor Blanco
- Departamento
de Química Orgánica, Facultad de Ciencias, Unidad de
Excelencia Química Aplicada a Biomedicina y Medioambiente, Universidad de Granada, Avda. Fuente Nueva, s/n, 18071 Granada, Spain
| | - Juan J. Giner-Casares
- Departamento
de Química Física y T. Aplicada, Instituto Químico
para la Energía y Medioambiente IQUEMA, Facultad de Ciencias, Universidad de Córdoba, Campus de Rabanales, Ed. Marie Curie, E-14071 Córdoba, Spain
| | - Luis Álvarez de Cienfuegos
- Departamento
de Química Orgánica, Facultad de Ciencias, Unidad de
Excelencia Química Aplicada a Biomedicina y Medioambiente, Universidad de Granada, Avda. Fuente Nueva, s/n, 18071 Granada, Spain
| | - Araceli G. Campaña
- Departamento
de Química Orgánica, Facultad de Ciencias, Unidad de
Excelencia Química Aplicada a Biomedicina y Medioambiente, Universidad de Granada, Avda. Fuente Nueva, s/n, 18071 Granada, Spain
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3
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Wang C, Deng Z, Phillips DL, Liu J. Extension of Non-alternant Nanographenes Containing Nitrogen-Doped Stone-Thrower-Wales Defects. Angew Chem Int Ed Engl 2023; 62:e202306890. [PMID: 37421410 DOI: 10.1002/anie.202306890] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 07/06/2023] [Accepted: 07/07/2023] [Indexed: 07/10/2023]
Abstract
Non-alternant topologies have attracted considerable attention due to their unique physiochemical characteristics in recent years. Here, three novel topological nanographenes molecular models of nitrogen-doped Stone-Thrower-Wales (S-T-W) defects were achieved through intramolecular direct arylation. Their chemical structures were unambiguously elucidated by single-crystal analysis. Among them, threefold intramolecular direct arylation compound (C42 H21 N) is the largest nanographene bearing a N-doped non-alternant topology to date, in which the non-benzenoid rings account for 83 % of the total molecular skeleton. The absorption maxima of this compound was located in the near-infrared region with a long tail up to 900 nm, which was much longer than those reported for similarly sized N-doped nanographene with six-membered rings (C40 H15 N). In addition, the electronic energy gaps of these series compounds clearly decreased with the introduction of non-alternant topologies (from 2.27 eV to 1.50 eV). It is noteworthy that C42 H21 N possesses such a low energy gap (Eg opt =1.40 eV; Eg cv =1.50 eV), yet is highly stable under ambient conditions. Our work reported herein demonstrates that the non-alternant topology could significantly influence the electronic configurations of nanocarbons, where the introduction of a non-alternanting topology may be an effective way to narrow the energy gap without extending the molecular π-conjugation.
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Affiliation(s)
- Chang Wang
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, 999077, China
- Chemistry and Chemical Engineering Guangdong Laboratory, Shantou, 515031, China
| | - Ziqi Deng
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, 999077, China
| | - David Lee Phillips
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, 999077, China
| | - Junzhi Liu
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, 999077, China
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4
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Luo H, Wan Q, Choi W, Tsutsui Y, Dmitrieva E, Du L, Phillips DL, Seki S, Liu J. Two-Step Synthesis of B 2 N 2 -Doped Polycyclic Aromatic Hydrocarbon Containing Pentagonal and Heptagonal Rings with Long-Lived Delayed Fluorescence. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2301769. [PMID: 37093207 DOI: 10.1002/smll.202301769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 04/03/2023] [Indexed: 05/03/2023]
Abstract
Pentagon-heptagon embedded polycyclic aromatic hydrocarbons (PAHs) have aroused increasing attention in recent years due to their unique physicochemical properties. Here, for the first time, this report demonstrates a facile method for the synthesis of a novel B2 N2 -doped PAH (BN-2) containing two pairs of pentagonal and heptagonal rings in only two steps. In the solid state of BN-2, two different conformations, including saddle-shaped and up-down geometries, are observed. Through a combined spectroscopic and calculation study, the excited-state dynamics of BN-2 is well-investigated in this current work. The resultant pentagon-heptagon embedded B2 N2 -doped BN-2 displays both prompt fluorescence and long-lived delayed fluorescence components at room temperature, with the triplet excited-state lifetime in the microsecond time region (τ = 19 µs). The triplet-triplet annihilation is assigned as the mechanism for the observed long-lived delayed fluorescence. Computational analyses attributed this observation to the small energy separation between the singlet and triplet excited states, facilitating the intersystem crossing (ISC) process which is further validated by the ultrafast spectroscopic measurements.
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Affiliation(s)
- Huan Luo
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, 999077, China
- Chemistry and Chemical Engineering Guangdong Laboratory, Shantou, 515031, China
| | - Qingyun Wan
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, 999077, China
| | - Wookjin Choi
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto, 615-8510, Japan
| | - Yusuke Tsutsui
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto, 615-8510, Japan
| | - Evgenia Dmitrieva
- Leibniz Institute for Solid State and Materials Research (IFW) Dresden, Helmholtzstr. 20, 01069, Dresden, Germany
| | - Lili Du
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, 999077, China
- School of Life Sciences, Jiangsu University, Zhenjiang, 212013, China
| | - David Lee Phillips
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, 999077, China
| | - Shu Seki
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto, 615-8510, Japan
| | - Junzhi Liu
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, 999077, China
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5
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Swain AK, Radacki K, Braunschweig H, Ravat P. Pyrene-Fused [7]Helicenes Connected Via Hexagonal and Heptagonal Rings: Stereospecific Synthesis and Chiroptical Properties. J Org Chem 2022; 87:993-1000. [PMID: 34990132 DOI: 10.1021/acs.joc.1c02281] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
In this manuscript, we portrayed a stereospecific synthesis of C2- and C1-symmetric pyrene-fused [7]helicene compounds 1 and 2, respectively. Compounds 1 and 2 were synthesized via a one-pot Suzuki coupling-C-H activation and two-step Suzuki coupling-Scholl reaction, respectively, with complete retention of configuration. The synthesized molecules differ in the fusing mode of [7]helicene units with pyrene via six- and seven-membered rings for 1 and 2, respectively. There was a significant difference in the functional properties and enantiomerization barrier of both compounds because of their distinct molecular symmetry as well as fusing mode to pyrene moiety. The heptagon-containing molecule 2 showed remarkable photophysical and chiroptical properties with commendable configurational stability compared to 1 and pristine [7]helicene as well as its [5]helicene congener.
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Affiliation(s)
- Asim Kumar Swain
- Institut für Organische Chemie, Universität Würzburg, D-97074 Würzburg, Germany
| | - Krzysztof Radacki
- Institut für Anorganische Chemie, Universität Würzburg, D-97074 Würzburg, Germany
| | - Holger Braunschweig
- Institut für Anorganische Chemie, Universität Würzburg, D-97074 Würzburg, Germany
| | - Prince Ravat
- Institut für Organische Chemie, Universität Würzburg, D-97074 Würzburg, Germany
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6
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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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7
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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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8
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Odajima M, Tajima K, Fukui N, Shinokubo H. Non-Planar Perylene Bisimide Analogues with Inserted Carbonyl and Methylene Subunits. Angew Chem Int Ed Engl 2021; 60:15838-15843. [PMID: 33928728 DOI: 10.1002/anie.202104882] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Indexed: 01/04/2023]
Abstract
The synthesis and properties of dinaphthotropone bisimide (DNTrBI) and dinaphthocycloheptatriene bisimide (DNCHepBI) are described. Their molecular design is conceptually based on the insertion of a carbon atom into a perylene bisimide (PBI) core. These molecules adopt non-planar structures due to the presence of a seven-membered ring. The PBI derivative into which a carbonyl group was inserted (DNTrBI) immediately underwent nonradiative decay and/or intersystem crossing in its excited state. The PBI derivative into which a methylene group was inserted (DNCHepBI) was susceptible to deprotonation on account of the two electron-withdrawing naphthalene monoimide units. Subsequent aerobic oxidation resulted in the formation of a C-C bond at the central methylene unit, thus affording a σ-dimer. The formation of this C-C bond is dynamically redox-active, i.e., electron injection into the σ-dimer almost quantitatively regenerated the deprotonated DNCHepBI.
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Affiliation(s)
- Mai Odajima
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8603, Japan
| | - Keita Tajima
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8603, Japan
| | - Norihito Fukui
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8603, Japan
| | - Hiroshi Shinokubo
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8603, Japan
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9
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Odajima M, Tajima K, Fukui N, Shinokubo H. Non‐Planar Perylene Bisimide Analogues with Inserted Carbonyl and Methylene Subunits. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202104882] [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)
- Mai Odajima
- Department of Molecular and Macromolecular Chemistry Graduate School of Engineering Nagoya University Furo-cho, Chikusa-ku Nagoya 464-8603 Japan
| | - Keita Tajima
- Department of Molecular and Macromolecular Chemistry Graduate School of Engineering Nagoya University Furo-cho, Chikusa-ku Nagoya 464-8603 Japan
| | - Norihito Fukui
- Department of Molecular and Macromolecular Chemistry Graduate School of Engineering Nagoya University Furo-cho, Chikusa-ku Nagoya 464-8603 Japan
| | - Hiroshi Shinokubo
- Department of Molecular and Macromolecular Chemistry Graduate School of Engineering Nagoya University Furo-cho, Chikusa-ku Nagoya 464-8603 Japan
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10
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Yang X, Chen X, Xu Y, Zhang M, Deng G, Yang Y, Liang Y. Palladium-Catalyzed [4 + 3] or [2 + 2 + 3] Annulation via C–H Activation and Subsequent Decarboxylation: Access to Heptagon-Embedded Polycyclic Aromatic Hydrocarbons. Org Lett 2021; 23:2610-2615. [DOI: 10.1021/acs.orglett.1c00520] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Xiumei Yang
- National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research, Ministry of Education, Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province, Hunan Normal University, Changsha, Hunan 410081, China
| | - Xiahong Chen
- National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research, Ministry of Education, Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province, Hunan Normal University, Changsha, Hunan 410081, China
| | - Yankun Xu
- National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research, Ministry of Education, Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province, Hunan Normal University, Changsha, Hunan 410081, China
| | - Minghao Zhang
- National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research, Ministry of Education, Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province, Hunan Normal University, Changsha, Hunan 410081, China
| | - Guobo Deng
- National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research, Ministry of Education, Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province, Hunan Normal University, Changsha, Hunan 410081, China
| | - Yuan Yang
- National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research, Ministry of Education, Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province, Hunan Normal University, Changsha, Hunan 410081, China
| | - Yun Liang
- National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research, Ministry of Education, Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province, Hunan Normal University, Changsha, Hunan 410081, China
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11
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Tanaka Y, Tajima K, Fukui N, Shinokubo H. Dinaphtho[1,8‐
bc
:1′,8′‐
fg
][1,5]dithiocine Bisimide. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202000722] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Yuki Tanaka
- Department of Molecular and Macromolecular Chemistry Graduate School of Engineering Nagoya University Furo-chi, Chikusa-ku 464-8603 Nagoya Japan
| | - Keita Tajima
- Department of Molecular and Macromolecular Chemistry Graduate School of Engineering Nagoya University Furo-chi, Chikusa-ku 464-8603 Nagoya Japan
| | - Norihito Fukui
- Department of Molecular and Macromolecular Chemistry Graduate School of Engineering Nagoya University Furo-chi, Chikusa-ku 464-8603 Nagoya Japan
| | - Hiroshi Shinokubo
- Department of Molecular and Macromolecular Chemistry Graduate School of Engineering Nagoya University Furo-chi, Chikusa-ku 464-8603 Nagoya Japan
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12
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Swain AK, Kolanji K, Stapper C, Ravat P. C2- and C1-Symmetric Configurationally Stable Pyrene-Fused [5]Helicenes Connected via Hexagonal and Heptagonal Rings. Org Lett 2021; 23:1339-1343. [PMID: 33529041 DOI: 10.1021/acs.orglett.1c00005] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
In this paper, we describe the stereospecific synthesis and functional properties of C2- and C1-symmetric pyrene-fused [5]helicene molecules 1 and 2 connected via hexagonal and heptagonal rings, respectively. Both molecules showed high configurational stability and distinct functional properties, which were attributed to the fusing mode of [5]helicene with the pyrene and molecular symmetry. The estimated Gibbs activation energy for enantiomerization of 2 is one of the highest reported values for any π-conjugated molecules incorporating [5]helicene moiety.
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Affiliation(s)
- Asim Kumar Swain
- Institut für Organische Chemie, Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany
| | - Kubandiran Kolanji
- Institut für Organische Chemie, Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany
| | - Christoph Stapper
- Institut für Organische Chemie, Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany
| | - Prince Ravat
- Institut für Organische Chemie, Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany
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13
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Kantarod K, Worakul T, Soorukram D, Kuhakarn C, Reutrakul V, Surawatanawong P, Wattanathana W, Leowanawat P. Dibenzopleiadiene-embeded polyaromatics via [4 + 3] annulative decarbonylation/decarboxylation. Org Chem Front 2021. [DOI: 10.1039/d0qo00942c] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A novel and efficient sequential cross-coupling/annulation strategy is developed to construct structurally and optoelectronically diverse class of dibezopleiadiene-embeded polyaromatics.
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Affiliation(s)
- Kritchasorn Kantarod
- Center of Excellence for Innovation in Chemistry (PERCH-CIC) and Department of Chemistry
- Faculty of Science
- Mahidol University
- Bangkok 10400
- Thailand
| | - Thanapat Worakul
- Center of Excellence for Innovation in Chemistry (PERCH-CIC) and Department of Chemistry
- Faculty of Science
- Mahidol University
- Bangkok 10400
- Thailand
| | - Darunee Soorukram
- Center of Excellence for Innovation in Chemistry (PERCH-CIC) and Department of Chemistry
- Faculty of Science
- Mahidol University
- Bangkok 10400
- Thailand
| | - Chutima Kuhakarn
- Center of Excellence for Innovation in Chemistry (PERCH-CIC) and Department of Chemistry
- Faculty of Science
- Mahidol University
- Bangkok 10400
- Thailand
| | - Vichai Reutrakul
- Center of Excellence for Innovation in Chemistry (PERCH-CIC) and Department of Chemistry
- Faculty of Science
- Mahidol University
- Bangkok 10400
- Thailand
| | - Panida Surawatanawong
- Center of Excellence for Innovation in Chemistry (PERCH-CIC) and Department of Chemistry
- Faculty of Science
- Mahidol University
- Bangkok 10400
- Thailand
| | - Worawat Wattanathana
- Department of Materials Engineering
- Faculty of Engineering
- Kasetsart University
- Bangkok 10900
- Thailand
| | - Pawaret Leowanawat
- Center of Excellence for Innovation in Chemistry (PERCH-CIC) and Department of Chemistry
- Faculty of Science
- Mahidol University
- Bangkok 10400
- Thailand
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14
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Báti G, Csókás D, Yong T, Tam SM, Shi RRS, Webster RD, Pápai I, García F, Stuparu MC. Mechanochemical Synthesis of Corannulene‐Based Curved Nanographenes. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202007815] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Gábor Báti
- Division of Chemistry and Biological Chemistry School of Physical and Mathematical Sciences Nanyang Technological University Singapore 21 Nanyang Link 637371 Singapore Singapore
| | - Dániel Csókás
- Institute of Organic Chemistry Research Centre for Natural Sciences Magyar tudósok körútja 2 1117 Budapest Hungary
| | - Teoh Yong
- Division of Chemistry and Biological Chemistry School of Physical and Mathematical Sciences Nanyang Technological University Singapore 21 Nanyang Link 637371 Singapore Singapore
| | - Si Man Tam
- Division of Chemistry and Biological Chemistry School of Physical and Mathematical Sciences Nanyang Technological University Singapore 21 Nanyang Link 637371 Singapore Singapore
| | - Raymond R. S. Shi
- Division of Chemistry and Biological Chemistry School of Physical and Mathematical Sciences Nanyang Technological University Singapore 21 Nanyang Link 637371 Singapore Singapore
| | - Richard D. Webster
- Division of Chemistry and Biological Chemistry School of Physical and Mathematical Sciences Nanyang Technological University Singapore 21 Nanyang Link 637371 Singapore Singapore
| | - Imre Pápai
- Institute of Organic Chemistry Research Centre for Natural Sciences Magyar tudósok körútja 2 1117 Budapest Hungary
| | - Felipe García
- Division of Chemistry and Biological Chemistry School of Physical and Mathematical Sciences Nanyang Technological University Singapore 21 Nanyang Link 637371 Singapore Singapore
| | - Mihaiela C. Stuparu
- Division of Chemistry and Biological Chemistry School of Physical and Mathematical Sciences Nanyang Technological University Singapore 21 Nanyang Link 637371 Singapore Singapore
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15
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Báti G, Csókás D, Yong T, Tam SM, Shi RRS, Webster RD, Pápai I, García F, Stuparu MC. Mechanochemical Synthesis of Corannulene‐Based Curved Nanographenes. Angew Chem Int Ed Engl 2020; 59:21620-21626. [DOI: 10.1002/anie.202007815] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Revised: 08/03/2020] [Indexed: 01/12/2023]
Affiliation(s)
- Gábor Báti
- Division of Chemistry and Biological Chemistry School of Physical and Mathematical Sciences Nanyang Technological University Singapore 21 Nanyang Link 637371 Singapore Singapore
| | - Dániel Csókás
- Institute of Organic Chemistry Research Centre for Natural Sciences Magyar tudósok körútja 2 1117 Budapest Hungary
| | - Teoh Yong
- Division of Chemistry and Biological Chemistry School of Physical and Mathematical Sciences Nanyang Technological University Singapore 21 Nanyang Link 637371 Singapore Singapore
| | - Si Man Tam
- Division of Chemistry and Biological Chemistry School of Physical and Mathematical Sciences Nanyang Technological University Singapore 21 Nanyang Link 637371 Singapore Singapore
| | - Raymond R. S. Shi
- Division of Chemistry and Biological Chemistry School of Physical and Mathematical Sciences Nanyang Technological University Singapore 21 Nanyang Link 637371 Singapore Singapore
| | - Richard D. Webster
- Division of Chemistry and Biological Chemistry School of Physical and Mathematical Sciences Nanyang Technological University Singapore 21 Nanyang Link 637371 Singapore Singapore
| | - Imre Pápai
- Institute of Organic Chemistry Research Centre for Natural Sciences Magyar tudósok körútja 2 1117 Budapest Hungary
| | - Felipe García
- Division of Chemistry and Biological Chemistry School of Physical and Mathematical Sciences Nanyang Technological University Singapore 21 Nanyang Link 637371 Singapore Singapore
| | - Mihaiela C. Stuparu
- Division of Chemistry and Biological Chemistry School of Physical and Mathematical Sciences Nanyang Technological University Singapore 21 Nanyang Link 637371 Singapore Singapore
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16
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Akhmetov V, Förtsch A, Feofanov M, Troyanov S, Amsharov K. Folding of fluorinated oligoarylenes into non-alternant PAHs with various topological shapes. Org Chem Front 2020. [DOI: 10.1039/d0qo00370k] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
An unprecedented [6]helicene's cavity closure indicating the possibility of introducing seven-membered rings via alumina-mediated C–F activation is shown.
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Affiliation(s)
- Vladimir Akhmetov
- Friedrich-Alexander University Erlangen-Nuernberg
- Department of Chemistry and Pharmacy
- Organic Chemistry II
- 91058 Erlangen
- Germany
| | - Andreas Förtsch
- Institute of Chemistry
- Organic Chemistry
- Martin-Luther-University Halle-Wittenberg
- D-06120 Halle
- Germany
| | - Mikhail Feofanov
- Friedrich-Alexander University Erlangen-Nuernberg
- Department of Chemistry and Pharmacy
- Organic Chemistry II
- 91058 Erlangen
- Germany
| | - Sergey Troyanov
- Chemistry Department
- Moscow State University
- Moscow
- Russian Federation
| | - Konstantin Amsharov
- Friedrich-Alexander University Erlangen-Nuernberg
- Department of Chemistry and Pharmacy
- Organic Chemistry II
- 91058 Erlangen
- Germany
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17
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Hayakawa S, Kawasaki A, Hong Y, Uraguchi D, Ooi T, Kim D, Akutagawa T, Fukui N, Shinokubo H. Inserting Nitrogen: An Effective Concept To Create Nonplanar and Stimuli-Responsive Perylene Bisimide Analogues. J Am Chem Soc 2019; 141:19807-19816. [DOI: 10.1021/jacs.9b09556] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Sakiho Hayakawa
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8603, Japan
| | - Ayumi Kawasaki
- Graduate School of Engineering, Tohoku University, Sendai 980-8579, Japan
- Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University, 2-1-1 Katahira Aoba-ku, Sendai 980-8577, Japan
| | - Yongseok Hong
- Spectroscopy Laboratory for Functional π-Electronic Systems and Department of Chemistry, Yonsei University, Seoul 03722, Korea
| | - Daisuke Uraguchi
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8603, Japan
| | - Takashi Ooi
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8603, Japan
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan
| | - Dongho Kim
- Spectroscopy Laboratory for Functional π-Electronic Systems and Department of Chemistry, Yonsei University, Seoul 03722, Korea
| | - Tomoyuki Akutagawa
- Graduate School of Engineering, Tohoku University, Sendai 980-8579, Japan
- Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University, 2-1-1 Katahira Aoba-ku, Sendai 980-8577, Japan
| | - Norihito Fukui
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8603, Japan
| | - Hiroshi Shinokubo
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8603, Japan
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18
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Hiroto S. Innovative Synthesis and Functions of Curved π-Conjugated Molecules. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2018. [DOI: 10.1246/bcsj.20170435] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Satoru Hiroto
- Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8603, Japan
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19
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Cruz CM, Márquez IR, Mariz IFA, Blanco V, Sánchez-Sánchez C, Sobrado JM, Martín-Gago JA, Cuerva JM, Maçôas E, Campaña AG. Enantiopure distorted ribbon-shaped nanographene combining two-photon absorption-based upconversion and circularly polarized luminescence. Chem Sci 2018; 9:3917-3924. [PMID: 29780523 PMCID: PMC5934837 DOI: 10.1039/c8sc00427g] [Citation(s) in RCA: 105] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2018] [Accepted: 03/07/2018] [Indexed: 12/21/2022] Open
Abstract
Herein we describe a distorted ribbon-shaped nanographene exhibiting unprecedented combination of optical properties in graphene-related materials, namely upconversion based on two-photon absorption (TPA-UC) together with circularly polarized luminescence (CPL). The compound is a graphene molecule of ca. 2 nm length and 1 nm width with edge defects that promote the distortion of the otherwise planar lattice. The edge defects are an aromatic saddle-shaped ketone unit and a [5]carbohelicene moiety. This system is shown to combine two-photon absorption and circularly polarized luminescence and a remarkably long emission lifetime of 21.5 ns. The [5]helicene is responsible for the chiroptical activity while the push-pull geometry and the extended network of sp2 carbons are factors favoring the nonlinear absorption. Electronic structure theoretical calculations support the interpretation of the results.
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Affiliation(s)
- Carlos M Cruz
- Departamento Química Orgánica , Universidad de Granada (UGR) , C. U. Fuentenueva , 18071 Granada , Spain .
| | - Irene R Márquez
- Departamento Química Orgánica , Universidad de Granada (UGR) , C. U. Fuentenueva , 18071 Granada , Spain .
| | - Inês F A Mariz
- Centro de Química-Física Molecular (CQFM) , Institute of Nanoscience and Nanotechnology (IN) and Centro de Química Estrutural , Instituto Superior Técnico , University of Lisbon , Av. Rovisco Pais, 1 , 1049-001 Lisboa , Portugal
| | - Victor Blanco
- Departamento Química Orgánica , Universidad de Granada (UGR) , C. U. Fuentenueva , 18071 Granada , Spain .
| | - Carlos Sánchez-Sánchez
- Instituto de Ciencia de Materiales de Madrid (ICMM-CSIC) , Sor Juana Inés de la Cruz 3 , 28049 Madrid , Spain
| | - Jesús M Sobrado
- Centro de Astrobiología INTA-CSIC , Torrejón de Ardoz , 28850 Madrid , Spain
| | - José A Martín-Gago
- Instituto de Ciencia de Materiales de Madrid (ICMM-CSIC) , Sor Juana Inés de la Cruz 3 , 28049 Madrid , Spain
- Centro de Astrobiología INTA-CSIC , Torrejón de Ardoz , 28850 Madrid , Spain
| | - Juan M Cuerva
- Departamento Química Orgánica , Universidad de Granada (UGR) , C. U. Fuentenueva , 18071 Granada , Spain .
| | - Ermelinda Maçôas
- Centro de Química-Física Molecular (CQFM) , Institute of Nanoscience and Nanotechnology (IN) and Centro de Química Estrutural , Instituto Superior Técnico , University of Lisbon , Av. Rovisco Pais, 1 , 1049-001 Lisboa , Portugal
| | - Araceli G Campaña
- Departamento Química Orgánica , Universidad de Granada (UGR) , C. U. Fuentenueva , 18071 Granada , Spain .
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20
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Márquez IR, Castro-Fernández S, Millán A, Campaña AG. Synthesis of distorted nanographenes containing seven- and eight-membered carbocycles. Chem Commun (Camb) 2018; 54:6705-6718. [DOI: 10.1039/c8cc02325e] [Citation(s) in RCA: 97] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
We highlight recent progress in bottom-up synthesis of well-defined distorted polyaromatic hydrocarbons with saddle shapes containing heptagonal and octagonal carbocycles.
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Affiliation(s)
- Irene R. Márquez
- Departamento Química Orgánica
- Universidad de Granada (UGR)
- 18071 Granada
- Spain
| | | | - Alba Millán
- Departamento Química Orgánica
- Universidad de Granada (UGR)
- 18071 Granada
- Spain
| | - Araceli G. Campaña
- Departamento Química Orgánica
- Universidad de Granada (UGR)
- 18071 Granada
- Spain
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21
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Fukui N, Kim T, Kim D, Osuka A. Porphyrin Arch-Tapes: Synthesis, Contorted Structures, and Full Conjugation. J Am Chem Soc 2017. [PMID: 28622724 DOI: 10.1021/jacs.7b05332] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Porphyrin tapes possessing meso-meso β-β β-β triple direct linkages have been targets of extensive studies because of their fully conjugated characteristic π-electronic networks. In this paper, we report porphyrin arch-tapes that bear additional carbonyl group(s) or methylene group(s) inserted between one of the β-β linkage(s) of the porphyrin tapes. The carbonyl-inserted porphyrin arch-tapes were efficiently synthesized by double fusion reactions of β-to-β carbonyl-bridged porphyrin oligomers with DDQ and Sc(OTf)3, and were converted to the methylene-bridged porphyrin arch-tapes via Luche reduction with NaBH4 and CeCl3 followed by ionic hydrogenation with HBF4·OEt2 and BH3·NEt3. While the conventional porphyrin tapes display rigid and planar structures and low solubilities, these porphyrin arch-tapes show remarkably contorted structures, flexible conformations, and improved solubilities because of the presence of the incorporated seven-membered ring(s). Interestingly, the methylene-inserted arch-tapes exhibited conjugative electronic interactions that were comparable to those of porphyrin tapes probably owing to through-space interaction in the contorted conformations. The carbonyl-inserted arch-tapes displayed distinctly larger conjugative interactions owing to an active involvement of the carbonyl group(s) in the electronic conjugation. A similar trend was observed in the nonlinear optical properties, as evidenced by their two-photon absorption cross sections. Furthermore, as a benefit of the contorted structures, these porphyrin arch-tapes can catch C60 fullerene effectively. Naturally, the electron-rich methylene-bridged arch-tapes exhibited larger association constants than the electron-deficient carbonyl-bridged arch-tapes. Among these arch-tapes, a methylene-bridged syn-Ni(II) porphyrin trimer recorded the largest association constant of (1.5 ± 0.4) × 107 M-1 in toluene at 25 °C.
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Affiliation(s)
- Norihito Fukui
- Department of Chemistry, Graduate School of Science, Kyoto University , Sakyo-ku, Kyoto 606-8502, Japan
| | - Taeyeon Kim
- Spectroscopy Laboratory for Functional π-electronic Systems and Department of Chemistry, Yonsei University , Seoul 03722, Korea
| | - Dongho Kim
- Spectroscopy Laboratory for Functional π-electronic Systems and Department of Chemistry, Yonsei University , Seoul 03722, Korea
| | - Atsuhiro Osuka
- Department of Chemistry, Graduate School of Science, Kyoto University , Sakyo-ku, Kyoto 606-8502, Japan
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22
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Márquez IR, Fuentes N, Cruz CM, Puente-Muñoz V, Sotorrios L, Marcos ML, Choquesillo-Lazarte D, Biel B, Crovetto L, Gómez-Bengoa E, González MT, Martin R, Cuerva JM, Campaña AG. Versatile synthesis and enlargement of functionalized distorted heptagon-containing nanographenes. Chem Sci 2017; 8:1068-1074. [PMID: 28451246 PMCID: PMC5357993 DOI: 10.1039/c6sc02895k] [Citation(s) in RCA: 82] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Accepted: 08/30/2016] [Indexed: 12/02/2022] Open
Abstract
Highly distorted polycyclic aromatic hydrocarbons (PAHs) are predicted to be attractive goals in nanoscience owing to the new properties they can exhibit. We have shown that a variety of functionalized distorted heptagon-containing nanographenes can be easily prepared from simple building blocks by a sequence of Co-catalyzed cyclotrimerization and cyclodehydrogenation reactions. The versatility of this strategy allows easy subsequent enlargement of these nanostructures by Ni-catalyzed cross-coupling and final cyclodehydrogenation reactions. Soluble extended distorted nanographenes 1 and 2 containing heptagon and an edge-shared pentagon-heptagon combination have been synthesized. High distortion of the polycyclic backbone of 2 caused by non-hexagonal rings and a helicene moiety was confirmed by X-ray crystallography. Experimental data reveal promising optical and electronic properties for distorted PAHs with long fluorescence lifetimes (up to 14.5 ns) and low band gaps (down to 2.27 eV). This straightforward and versatile synthetic strategy, the observed long fluorescence lifetimes and the small optical and electrochemical band gaps for the presented compounds may promote the future implementation of distorted graphene molecules in electronic devices.
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Affiliation(s)
- Irene R Márquez
- Departamento Química Orgánica , Universidad de Granada (UGR) , C. U. Fuentenueva , 18071 Granada , Spain .
| | - Noelia Fuentes
- Departamento Química Orgánica , Universidad de Granada (UGR) , C. U. Fuentenueva , 18071 Granada , Spain .
| | - Carlos M Cruz
- Departamento Química Orgánica , Universidad de Granada (UGR) , C. U. Fuentenueva , 18071 Granada , Spain .
| | - Virginia Puente-Muñoz
- Departamento de Fisicoquímica , Facultad de Farmacia , UGR. Cartuja Campus , 18071 Granada , Spain
| | - Lia Sotorrios
- Departamento de Química Orgánica I , Universidad del País Vasco , E-20018 , San Sebastián , Spain
| | - M Luisa Marcos
- Departamento de Química , Universidad Autónoma de Madrid , c/Francisco Tomás y Valiente no. 7, Cantoblanco , 28049 Madrid , Spain
| | - Duane Choquesillo-Lazarte
- Laboratorio de Estudios Cristalográficos , Instituto Andaluz de Ciencias de la Tierra (CSIC-UGR) , 18100 Armilla , Granada , Spain
| | - Blanca Biel
- Departamento de Electrónica y Tecnología de Computadores , Facultad de Ciencias , CITIC , UGR , E-18071 Granada , Spain
| | - Luis Crovetto
- Departamento de Fisicoquímica , Facultad de Farmacia , UGR. Cartuja Campus , 18071 Granada , Spain
| | - Enrique Gómez-Bengoa
- Departamento de Química Orgánica I , Universidad del País Vasco , E-20018 , San Sebastián , Spain
| | - M Teresa González
- Fundación IMDEA Nanociencia , Ciudad Universitaria de Cantoblanco , E-28049 Madrid , Spain
| | - Ruben Martin
- Institute of Chemical Research of Catalonia (ICIQ) , Catalan Institution for Research and Advanced Studies (ICREA) , Spain
| | - Juan M Cuerva
- Departamento Química Orgánica , Universidad de Granada (UGR) , C. U. Fuentenueva , 18071 Granada , Spain .
| | - Araceli G Campaña
- Departamento Química Orgánica , Universidad de Granada (UGR) , C. U. Fuentenueva , 18071 Granada , Spain .
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