1
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Matsuo Y, Gon M, Tanaka K, Seki S, Tanaka T. Synthesis of Aza[ n]helicenes up to n = 19: Hydrogen-Bond-Assisted Solubility and Benzannulation Strategy. J Am Chem Soc 2024; 146:17428-17437. [PMID: 38866732 DOI: 10.1021/jacs.4c05156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2024]
Abstract
Synthetic challenges toward anomalous structures and electronic states often involve handling problems such as insolubility in common organic solvents and oxidative degradation under aerobic conditions. We designed benzo-annulated aza[n]helicenes, which benefit from both the suppressed elevation of highest occupied molecular orbital (HOMO) energies and high solubility due to hydrogen bonding with solvent molecules to overcome these challenges. This strategy enabled the synthesis of six new aza[n]helicenes ([n]AHs) of different lengths (n = 9-19) from acyclic precursors via one-pot intramolecular oxidative fusion reactions. The structures of all of the synthesized aza[n]helicenes were determined by X-ray diffraction (XRD) analysis, and their electrochemical potentials were measured by cyclic voltammetry. Among the synthesized aza[n]helicenes, [17]AH and [19]AH are the first heterohelicenes with a triple-layered helix. The noncovalent interaction (NCI) plots confirm the existence of an effective π-π interaction between the layers. The absorption and fluorescence spectra red-shifted as the helical lengths increased, without any distinct saturation points. The optical resolutions of N-butylated [9]AH, [11]AH, [13]AH, and [15]AH were accomplished, and their circular dichroism (CD) and circularly polarized luminescence (CPL) were measured. Thus, the structural, (chir)optical, and electrochemical properties of the aza[n]helicenes were comprehensively analyzed.
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Affiliation(s)
- Yusuke Matsuo
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Masayuki Gon
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Kazuo Tanaka
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Shu Seki
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Takayuki Tanaka
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan
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2
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Gu S, Ma Z, Lu X, Tanaka T, Osuka A, Chen F. Construction of a tetrabenzotetrathia[8]circulene by a "fold-in" oxidative fusion reaction: synthesis and optical properties. Chem Commun (Camb) 2024; 60:6264-6267. [PMID: 38819230 DOI: 10.1039/d4cc01598c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2024]
Abstract
Herein we report the first synthesis of a tetrabenzotetrathia[8]circulene by a "fold-in" type oxidative fusion reaction. Compared to the pristine tetrathia[8]circulene, the four-fold benzoannulation slightly weakened the antiaromatic character of the central COT ring. The tetrabenzotetrathia[8]circulene exhibited fluorescence at room temperature, and phosphorescence at 77 K with a phosphorescence quantum yield of 11.7%.
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Affiliation(s)
- Shijun Gu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China.
| | - Zhihao Ma
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China.
| | - Xiuqin Lu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China.
| | - Takayuki Tanaka
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Atsuhiro Osuka
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
| | - Fengkun Chen
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China.
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3
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Liu J, Hong J, Liao Z, Tan J, Liu H, Dmitrieva E, Zhou L, Ren J, Cao XY, Popov AA, Zou Y, Narita A, Hu Y. Negatively Curved Octagon-Incorporated Aza-nanographene and its Assembly with Fullerenes. Angew Chem Int Ed Engl 2024; 63:e202400172. [PMID: 38345140 DOI: 10.1002/anie.202400172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Indexed: 03/01/2024]
Abstract
A negatively curved aza-nanographene (NG) containing two octagons was synthesized by a regioselective and stepwise cyclodehydrogenation procedure, in which a double aza[7]helicene was simultaneously formed as an intermediate. Their saddle-shaped structures with negative curvature were unambiguously confirmed by X-ray crystallography, thereby enabling the exploration of the structure-property relationship by photophysical, electrochemical and conformational studies. Moreover, the assembly of the octagon-embedded aza-NG with fullerenes was probed by fluorescence spectral titration, with record-high binding constants (Ka=9.5×103 M-1 with C60, Ka=3.7×104 M-1 with C70) found among reported negatively curved polycyclic aromatic compounds. The tight association of aza-NG with C60 was further elucidated by X-ray diffraction analysis of their co-crystal, which showed the formation of a 1 : 1 complex with substantial concave-convex interactions.
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Affiliation(s)
- Jun Liu
- College of Chemistry and Chemical Engineering, Central South University, 410083, Changsha, China
| | - Juan Hong
- College of Chemistry and Chemical Engineering, Central South University, 410083, Changsha, China
| | - Zhenxing Liao
- College of Chemistry and Chemical Engineering, Central South University, 410083, Changsha, China
| | - Jingyun Tan
- Organic and Carbon Nanomaterials Unit, Okinawa Institute of Science and Technology Graduate University, 1919-1 Tancha, Onna-son, Kunigami-gun, Okinawa, 904-0495, Japan
| | - Haoliang Liu
- Department of Chemistry and Chemical Engineering, Xiamen University, 361005, Xiamen, China
| | - Evgenia Dmitrieva
- Center of Spectroelectrochemistry, Leibniz Institute for Solid State and Materials Research, Helmholtzstrasse 20, 01069, Dresden, Germany
| | - Long Zhou
- College of Chemistry and Chemical Engineering, Central South University, 410083, Changsha, China
| | - Jie Ren
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, International Research Center for X Polymers Department of Polymer Science and Engineering, Zhejiang University, 310027, Hangzhou, China
| | - Xiao-Yu Cao
- Department of Chemistry and Chemical Engineering, Xiamen University, 361005, Xiamen, China
| | - Alexey A Popov
- Center of Spectroelectrochemistry, Leibniz Institute for Solid State and Materials Research, Helmholtzstrasse 20, 01069, Dresden, Germany
| | - Yingping Zou
- College of Chemistry and Chemical Engineering, Central South University, 410083, Changsha, China
| | - Akimitsu Narita
- Organic and Carbon Nanomaterials Unit, Okinawa Institute of Science and Technology Graduate University, 1919-1 Tancha, Onna-son, Kunigami-gun, Okinawa, 904-0495, Japan
| | - Yunbin Hu
- College of Chemistry and Chemical Engineering, Central South University, 410083, Changsha, China
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4
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Mallick S, Kollimalaian K, Chetti P, Parthasarathy V. Chasing Turns and Twists: Unraveling the One-Step Synthesis, Intricate Pathways, and Structural Revelations of N-Aryl Aza-quasi[8]circulenes. Chemistry 2024; 30:e202302876. [PMID: 37747146 DOI: 10.1002/chem.202302876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Revised: 09/23/2023] [Accepted: 09/25/2023] [Indexed: 09/26/2023]
Abstract
An efficient one-step synthesis of N-Aryl aza-quasi[8]circulenes is reported starting from bis(biaryl)carbazoles. The intermediacy of N-aryl aza[7]helicene is investigated, and the Scholl oxidative cyclization route is invoked here to overcome the large strain during the formation of N-aryl aza-quasi[8]circulenes from N-aryl aza[7]helicene. Notably, this transformation occurs without the need for directing groups and proceeds from a more helical to a less helical pathway. Both the N-aryl aza[7]helicene and N-aryl aza-quasi[8]circulene are confirmed by single crystal X-ray structural analysis. The enantiomers of N-aryl aza[7]helicene are separated by chiral HPLC and analyzed by circular dichroism spectroscopy to investigate their chiroptical properties. However, N-aryl aza-quasi[8]circulene racemizes rapidly. The radical cations generated from aza-quasi[8]circulene through chemical oxidation exhibit broad absorption in the near-IR region and air stability up to 24 h. Optical and electrochemical studies with aza[7]helicene and aza-quasi[8]circulene derivatives highlight their potential in organic electronic devices.
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Affiliation(s)
- Sudesh Mallick
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600 036, Tamil Nadu, India
| | - Kalidass Kollimalaian
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600 036, Tamil Nadu, India
| | - Prabhakar Chetti
- Department of Chemistry, National Institute of Technology Kurukshetra, 136 119, Haryana, India
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5
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Iwanaga T, Oki T, Morioka Y, Inoue S, Sato H. Synthesis of π-Extended Carbazole Dimers Via Oxidative Cyclization Using DDQ and Sulfonic Acid and Elucidation of the Reaction Mechanism. J Org Chem 2022; 87:14855-14860. [PMID: 36219831 DOI: 10.1021/acs.joc.2c01571] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
This paper describes the synthesis of various π-extended carbazole dimers via intramolecular oxidative cyclization using a chain precursor consisting of two carbazole units bridged by a nitrogen atom. A careful selection of the reaction conditions using 2,3-dichloro-5,6-dicyano-p-benzoquinone/sulfonic acid enabled the selective synthesis of a π-extended analogue with an angular (L-shape) structure in moderate yield. The preferential positions for the bonding of the two carbazole units in this π-extended derivative were determined by performing density functional theory calculations.
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Affiliation(s)
- Tetsuo Iwanaga
- Department of Chemistry, Faculty of Science, Okayama University of Science, 1-1 Ridaicho, Kita-ku, Okayama 700-0005, Japan
| | - Tomohiro Oki
- Department of Chemistry, Faculty of Science, Okayama University of Science, 1-1 Ridaicho, Kita-ku, Okayama 700-0005, Japan
| | - Yoshihiro Morioka
- Department of Chemistry, Faculty of Science, Okayama University of Science, 1-1 Ridaicho, Kita-ku, Okayama 700-0005, Japan
| | - Shoichiro Inoue
- Department of Chemistry, Faculty of Science, Okayama University of Science, 1-1 Ridaicho, Kita-ku, Okayama 700-0005, Japan
| | - Hiroyasu Sato
- X-ray Research Laboratory, Rigaku Corporation, 3-9-12 Matsubaracho, Akishima, Tokyo 196-8666, Japan
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6
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Fujimoto K, Sasaki K, Yamagishi S, Inuzuka T, Sanada K, Sakamoto M, Takahashi M. 7,12‐Dihydrobenzo[de]indolo[3,2‐b]quinoline: Unique Reactivity and Redox Interconversion. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Keisuke Fujimoto
- Shizuoka Daigaku Faculty of Engineering 3-5-1 johoku nakaku 432-8561 hamamatsu JAPAN
| | | | | | - Toshiyasu Inuzuka
- Gifu University: Gifu Daigaku Division of Instrumental Analysis JAPAN
| | - Kazutaka Sanada
- Chiba University: Chiba Daigaku Applied Chemistry and Biotechnology JAPAN
| | - Masami Sakamoto
- Chiba University: Chiba Daigaku Applied Chemistry and Biotechnology JAPAN
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7
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Fritz PW, Chen T, Ashirov T, Nguyen AD, Dincă M, Coskun A. Fully Conjugated Tetraoxa[8]circulene-Based Porous Semiconducting Polymers. Angew Chem Int Ed Engl 2022; 61:e202116527. [PMID: 35172031 PMCID: PMC9313886 DOI: 10.1002/anie.202116527] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Indexed: 11/09/2022]
Abstract
Tetraoxa[8]circulenes (TOCs) are a class of hetero[8]circulenes featuring a planar cyclooctatetraene core with a mixed aromatic/antiaromatic motif that governs their electronic properties. Polymeric TOCs (pTOCs) have been the subject of several computational simulations because they are predicted to be low-band-gap semiconductors, but they have not been available synthetically yet. Here, we report the first example of pTOCs, a new family of porous semiconductors, synthesized under ionothermal conditions through the intermolecular cyclization of 1,4,5,8-anthracene tetrone. pTOCs are porous, with surface areas up to 1656 m2 g-1 , and exhibit light-switchable and tunable semiconducting properties.
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Affiliation(s)
- Patrick W Fritz
- Department of Chemistry, University of Fribourg, Chemin du Musée 9, 1700, Fribourg, Switzerland
| | - Tianyang Chen
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Ave, Cambridge, MA 02139, USA
| | - Timur Ashirov
- Department of Chemistry, University of Fribourg, Chemin du Musée 9, 1700, Fribourg, Switzerland
| | - Anh-Dao Nguyen
- Department of Chemistry, University of Fribourg, Chemin du Musée 9, 1700, Fribourg, Switzerland
| | - Mircea Dincă
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Ave, Cambridge, MA 02139, USA
| | - Ali Coskun
- Department of Chemistry, University of Fribourg, Chemin du Musée 9, 1700, Fribourg, Switzerland
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8
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Fritz PW, Chen T, Ashirov T, Nguyen A, Dincă M, Coskun A. Fully Conjugated Tetraoxa[8]circulene‐Based Porous Semiconducting Polymers. Angew Chem Int Ed Engl 2022; 61. [DOI: https:/doi.org/10.1002/anie.202116527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Indexed: 07/03/2024]
Abstract
AbstractTetraoxa[8]circulenes (TOCs) are a class of hetero[8]circulenes featuring a planar cyclooctatetraene core with a mixed aromatic/antiaromatic motif that governs their electronic properties. Polymeric TOCs (pTOCs) have been the subject of several computational simulations because they are predicted to be low‐band‐gap semiconductors, but they have not been available synthetically yet. Here, we report the first example of pTOCs, a new family of porous semiconductors, synthesized under ionothermal conditions through the intermolecular cyclization of 1,4,5,8‐anthracene tetrone. pTOCs are porous, with surface areas up to 1656 m2 g−1, and exhibit light‐switchable and tunable semiconducting properties.
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Affiliation(s)
- Patrick W. Fritz
- Department of Chemistry University of Fribourg Chemin du Musée 9 1700 Fribourg Switzerland
| | - Tianyang Chen
- Department of Chemistry Massachusetts Institute of Technology 77 Massachusetts Ave Cambridge MA 02139 USA
| | - Timur Ashirov
- Department of Chemistry University of Fribourg Chemin du Musée 9 1700 Fribourg Switzerland
| | - Anh‐Dao Nguyen
- Department of Chemistry University of Fribourg Chemin du Musée 9 1700 Fribourg Switzerland
| | - Mircea Dincă
- Department of Chemistry Massachusetts Institute of Technology 77 Massachusetts Ave Cambridge MA 02139 USA
| | - Ali Coskun
- Department of Chemistry University of Fribourg Chemin du Musée 9 1700 Fribourg Switzerland
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9
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Protonation‐Induced Antiaromaticity in Octaaza[8]circulenes: Cyclooctatetraene Scaffolds Constrained with Four Amidine Moieties. Chem Asian J 2022; 17:e202200244. [DOI: 10.1002/asia.202200244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Revised: 04/04/2022] [Indexed: 11/07/2022]
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10
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Morimoto Y, Koo YH, Otsubo K, Kitakado H, Seki S, Osuka A, Tanaka T. Dibenzodiazapyracylenes: Doubly N‐Doped Cyclopenta‐Fused Polycyclic Molecules That Exhibit High Carrier Mobility. Angew Chem Int Ed Engl 2022; 61:e202200341. [DOI: 10.1002/anie.202200341] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Indexed: 01/18/2023]
Affiliation(s)
- Yuki Morimoto
- Department of Chemistry, Graduate School of Science Kyoto University Sakyo-ku, Kyoto 606-8502 Japan
| | - Yun Hee Koo
- Department of Molecular Engineering, Graduate School of Engineering Kyoto University Nishikyo-ku, Kyoto 615-8510 Japan
| | - Kazuya Otsubo
- Department of Chemistry, Graduate School of Science Kyoto University Sakyo-ku, Kyoto 606-8502 Japan
| | - Hidetsugu Kitakado
- Department of Chemistry, Graduate School of Science Kyoto University Sakyo-ku, Kyoto 606-8502 Japan
| | - Shu Seki
- Department of Molecular Engineering, Graduate School of Engineering Kyoto University Nishikyo-ku, Kyoto 615-8510 Japan
| | - Atsuhiro Osuka
- Department of Chemistry, Graduate School of Science Kyoto University Sakyo-ku, Kyoto 606-8502 Japan
| | - Takayuki Tanaka
- Department of Chemistry, Graduate School of Science Kyoto University Sakyo-ku, Kyoto 606-8502 Japan
- Department of Molecular Engineering, Graduate School of Engineering Kyoto University Nishikyo-ku, Kyoto 615-8510 Japan
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11
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Matsuo Y, Kise K, Morimoto Y, Osuka A, Tanaka T. Fold-in Synthesis of a Pentabenzopentaaza[10]circulene. Angew Chem Int Ed Engl 2022; 61:e202116789. [PMID: 34995398 DOI: 10.1002/anie.202116789] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Indexed: 11/10/2022]
Abstract
A pentabenzopentaaza[10]circulene has been synthesized as the largest fully conjugated hetero[n]circulene via a fold-in oxidative fusion reaction of an ortho-phenylene-bridged cyclic pyrrole pentamer. This circulene takes a saddle-distorted structure with bond lengths of the central ten-membered-ring in the range of 1.455-1.493 Å. Relatively broad absorption and fluorescence spectra were observed, which reflects its flexible structure, in accordance with the low-temperature NMR spectra and theoretical calculations. The energy barrier for saddle-to-saddle interconversion was estimated to be quite small (≈3 kcal mol-1 ).
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Affiliation(s)
- Yusuke Matsuo
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan
| | - Koki Kise
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan
| | - Yuki Morimoto
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan
| | - Atsuhiro Osuka
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan
| | - Takayuki Tanaka
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan
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12
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Fritz PW, Chen T, Ashirov T, Nguyen A, Dincă M, Coskun A. Fully Conjugated Tetraoxa[8]circulene‐Based Porous Semiconducting Polymers. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202116527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Patrick W. Fritz
- Department of Chemistry University of Fribourg Chemin du Musée 9 1700 Fribourg Switzerland
| | - Tianyang Chen
- Department of Chemistry Massachusetts Institute of Technology 77 Massachusetts Ave Cambridge MA 02139 USA
| | - Timur Ashirov
- Department of Chemistry University of Fribourg Chemin du Musée 9 1700 Fribourg Switzerland
| | - Anh‐Dao Nguyen
- Department of Chemistry University of Fribourg Chemin du Musée 9 1700 Fribourg Switzerland
| | - Mircea Dincă
- Department of Chemistry Massachusetts Institute of Technology 77 Massachusetts Ave Cambridge MA 02139 USA
| | - Ali Coskun
- Department of Chemistry University of Fribourg Chemin du Musée 9 1700 Fribourg Switzerland
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13
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Tanaka T. Synthesis of Novel Heteronanographenes via Fold-in Approach. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2022. [DOI: 10.1246/bcsj.20220030] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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14
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González Miera G, Matsubara S, Kono H, Murakami K, Itami K. Synthesis of octagon-containing molecular nanocarbons. Chem Sci 2022; 13:1848-1868. [PMID: 35308842 PMCID: PMC8848939 DOI: 10.1039/d1sc05586k] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Accepted: 12/12/2021] [Indexed: 12/16/2022] Open
Abstract
Nanocarbons, such as fullerenes, carbon nanotubes, and graphenes, have long inspired the scientific community. In order to synthesize nanocarbon molecules in an atomically precise fashion, many synthetic reactions have been developed. The ultimate challenge for synthetic chemists in nanocarbon science is the creation of periodic three-dimensional (3D) carbon crystals. In 1991, Mackay and Terrones proposed periodic 3D carbon crystals with negative Gaussian curvatures that consist of six- and eight-membered rings (the so-called Mackay-Terrones crystals). The existence of the eight-membered rings causes a warped nanocarbon structure. The Mackay-Terrones crystals are considered a "dream material", and have been predicted to exhibit extraordinary mechanical, magnetic, and optoelectronic properties (harder than diamond, for example). To turn the dream of having this wonder material into reality, the development of methods enabling the creation of octagon-embedding polycyclic structures (or nanographenes) is of fundamental and practical importance. This review describes the most vibrant synthetic achievements that the scientific community has performed to obtain curved polycyclic nanocarbons with eight-membered rings, building blocks that could potentially give access as templates to larger nanographenes, and eventually to Mackay-Terrones crystals, by structural expansion strategies.
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Affiliation(s)
- Greco González Miera
- Institute of Transformative Bio-Molecules (WPI-ITbM) and Graduate School of Science, Nagoya University Chikusa Nagoya 464-8602 Japan
| | - Satoshi Matsubara
- Institute of Transformative Bio-Molecules (WPI-ITbM) and Graduate School of Science, Nagoya University Chikusa Nagoya 464-8602 Japan
| | - Hideya Kono
- Institute of Transformative Bio-Molecules (WPI-ITbM) and Graduate School of Science, Nagoya University Chikusa Nagoya 464-8602 Japan
| | - Kei Murakami
- Institute of Transformative Bio-Molecules (WPI-ITbM) and Graduate School of Science, Nagoya University Chikusa Nagoya 464-8602 Japan .,Department of Chemistry, School of Science, Kwansei Gakuin University Sanda Hyogo 669-1337 Japan .,JST-PRESTO 7 Gobancho, Chiyoda Tokyo 102-0076 Japan
| | - Kenichiro Itami
- Institute of Transformative Bio-Molecules (WPI-ITbM) and Graduate School of Science, Nagoya University Chikusa Nagoya 464-8602 Japan .,Institute of Chemistry, Academia Sinica Nankang Taipei 115 Taiwan Republic of China
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15
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Morimoto Y, Koo YH, Otsubo K, Kitakado H, Seki S, Osuka A, Tanaka T. Dibenzodiazapyracylenes: Doubly N‐Doped Cyclopenta‐fused Polycyclic Molecules That Exhibit High Carrier Mobility. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202200341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | - Yun Hee Koo
- Kyoto University: Kyoto Daigaku Molecular Engineering JAPAN
| | | | | | - Shu Seki
- Kyoto University: Kyoto Daigaku Molecular Engineering JAPAN
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16
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Matsuo Y, Kise K, Morimoto Y, Osuka A, Tanaka T. Fold‐in Synthesis of a Pentabenzopentaaza[10]circulene. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202116789] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
| | - Koki Kise
- Kyoto University: Kyoto Daigaku Chemistry JAPAN
| | | | | | - Takayuki Tanaka
- Graduate School of Science, Kyoto University Chemistry Kitashirakawa Oiwake-cho 606-8502 Kyoto JAPAN
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17
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Tanaka T, Kise K. Non-Planar Polycyclic Aromatic Molecules Including Heterole Units. HETEROCYCLES 2022. [DOI: 10.3987/rev-22-982] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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18
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Maeda C, Nomoto S, Akiyama K, Tanaka T, Ema T. Facile Synthesis of Azahelicenes and Diaza[8]circulenes through the Intramolecular Scholl Reaction. Chemistry 2021; 27:15699-15705. [PMID: 34449114 DOI: 10.1002/chem.202102269] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Indexed: 11/07/2022]
Abstract
Carbazole-based aza[7]helicenes and hetero[9]helicenes were successfully obtained via the intramolecular Scholl reaction of 3,6-bis(biphenyl-2-yl)carbazole congeners, while the reaction of 3,6-bis(naphthylphenyl)-appended carbazole gave a triple helicene via an unexpected simultaneous double aryl rearrangement. DFT calculations suggested that the rearrangement proceeded via an arenium cation intermediate. In addition, the reaction of methoxy-appended substrate gave an azahepta[8]circulene via the concurrent C-C bond formation. These helical dyes showed circularly polarized luminescence. The azahepta[8]circulene was further transformed into deeply saddle-distorted dibenzodiaza[8]circulenes as the first example of its solution-based synthesis and unambiguous structural determination.
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Affiliation(s)
- Chihiro Maeda
- Division of Applied Chemistry Graduate School of Natural Science and Technology, Okayama University Tsushima, Okayama, 700-8530, Japan
| | - Shuichi Nomoto
- Division of Applied Chemistry Graduate School of Natural Science and Technology, Okayama University Tsushima, Okayama, 700-8530, Japan
| | - Koki Akiyama
- Division of Applied Chemistry Graduate School of Natural Science and Technology, Okayama University Tsushima, Okayama, 700-8530, Japan
| | - Takayuki Tanaka
- Department of Chemistry Graduate School of Science, Kyoto University Sakyo-ku, Kyoto, 606-8502, Japan
| | - Tadashi Ema
- Division of Applied Chemistry Graduate School of Natural Science and Technology, Okayama University Tsushima, Okayama, 700-8530, Japan
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19
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Miao D, Di Michele V, Gagnon F, Aumaître C, Lucotti A, Del Zoppo M, Lirette F, Tommasini M, Morin JF. Pyrrole-Embedded Linear and Helical Graphene Nanoribbons. J Am Chem Soc 2021; 143:11302-11308. [PMID: 34296873 DOI: 10.1021/jacs.1c05616] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Linear and helical graphene nanoribbons (L-PyGNR and H-PyGNR) bearing electron-rich pyrrole units have been synthesized by using the photochemical cyclodehydrochlorination (CDHC) reaction. The pyrrole units in the polymer backbone make the polymer electron-rich with moderate bandgap values and relatively high HOMO energy levels. The planarization of the pyrrole unit through cyclization yields a bandgap value almost 0.5 eV lower than that measured for polypyrrole. Conductivity values in the thin film up to 0.12 S/cm were measured for the chemically oxidized L-PyGNR (four-point method). Both GNRs showed excellent fluorescence sensing properties for TNT in solution with KSV values up to 6.4 × 106 M-1.
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Affiliation(s)
- Dandan Miao
- Département de chimie and Centre de Recherche sur les Matériaux Avancés (CERMA), Université Laval, 1045 Ave de la Médecine, Québec, Canada G1V 0A6
| | - Vanessa Di Michele
- Dipartimento di Chimica, Materiali e Ingegneria Chimica "G. Natta", Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy
| | - Félix Gagnon
- Département de chimie and Centre de Recherche sur les Matériaux Avancés (CERMA), Université Laval, 1045 Ave de la Médecine, Québec, Canada G1V 0A6
| | - Cyril Aumaître
- Département de chimie and Centre de Recherche sur les Matériaux Avancés (CERMA), Université Laval, 1045 Ave de la Médecine, Québec, Canada G1V 0A6
| | - Andrea Lucotti
- Dipartimento di Chimica, Materiali e Ingegneria Chimica "G. Natta", Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy
| | - Mirella Del Zoppo
- Dipartimento di Chimica, Materiali e Ingegneria Chimica "G. Natta", Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy
| | - Frédéric Lirette
- Département de chimie and Centre de Recherche sur les Matériaux Avancés (CERMA), Université Laval, 1045 Ave de la Médecine, Québec, Canada G1V 0A6
| | - Matteo Tommasini
- Dipartimento di Chimica, Materiali e Ingegneria Chimica "G. Natta", Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy
| | - Jean-François Morin
- Département de chimie and Centre de Recherche sur les Matériaux Avancés (CERMA), Université Laval, 1045 Ave de la Médecine, Québec, Canada G1V 0A6
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20
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Fujimoto K, Takimoto S, Masuda S, Inuzuka T, Sanada K, Sakamoto M, Takahashi M. 5,11-Diazadibenzo[hi,qr]tetracene: Synthesis, Properties, and Reactivity toward Nucleophilic Reagents. Chemistry 2021; 27:8951-8955. [PMID: 33851483 DOI: 10.1002/chem.202100944] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Indexed: 11/06/2022]
Abstract
5,11-Diazadibenzo[hi,qr]tetracene was synthesized as a new nitrogen-substituted polycyclic heteroaromatic compound by Pd-catalyzed cycloisomerization of an alkyne precursor followed by oxidative cyclization with bis(trifluoroacetoxy)iodobenzene. The substitution of imine-type nitrogen atoms significantly enhanced its electron-accepting character and facilitated the direct nucleophilic addition of arylamines under strongly basic conditions to afford the desired amino-substituted products. The introduction of amino groups induced a remarkable red-shift in their absorption spectra; the tetrasubstituted product exhibited intense near-infrared absorbing property. Furthermore, the π-electronic system, which includes a redox-active 1,4-diazabutadiene moiety, underwent reversible interconversion to its corresponding reduced form upon reduction with NaBH4 and aerobic oxidation.
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Affiliation(s)
- Keisuke Fujimoto
- Department of Applied Chemistry, Faculty of Engineering, Shizuoka University, 3-5-1 Johoku, Naka-ku, Hamamatsu, 432-8561, Japan
| | - Satoshi Takimoto
- Department of Applied Chemistry, Faculty of Engineering, Shizuoka University, 3-5-1 Johoku, Naka-ku, Hamamatsu, 432-8561, Japan
| | - Shota Masuda
- Department of Applied Chemistry, Faculty of Engineering, Shizuoka University, 3-5-1 Johoku, Naka-ku, Hamamatsu, 432-8561, Japan
| | - Toshiyasu Inuzuka
- Division of Instrumental Analysis, Life Science Research Center, Gifu University, 1-1 Yanagido, Gifu, 501-1193, Japan
| | - Kazutaka Sanada
- Department of Applied Chemistry and Biotechnology, Graduate School of Engineering, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba, 263-8522, Japan
| | - Masami Sakamoto
- Department of Applied Chemistry and Biotechnology, Graduate School of Engineering, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba, 263-8522, Japan
| | - Masaki Takahashi
- Department of Applied Chemistry, Faculty of Engineering, Shizuoka University, 3-5-1 Johoku, Naka-ku, Hamamatsu, 432-8561, Japan
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21
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Akahori S, Sasamori T, Shinokubo H, Miyake Y. Quadruply BN-Fused Tetrathia[8]circulenes with Flexible Frameworks: Synthesis, Structures and Properties. Chemistry 2021; 27:8178-8184. [PMID: 33822395 DOI: 10.1002/chem.202100454] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Indexed: 12/14/2022]
Abstract
Quadruply BN-fused tetrathia[8]circulenes were synthesized through four-fold electrophilic borylation. The single-crystal X-ray diffraction analysis revealed that the BN-fused tetrathia[8]circulene with peripheral phenyl groups exhibits crystal polymorphism, in which the circulene core adopts both planar and saddle conformations in the solid state. The experimental and theoretical studies revealed that the weaker aromaticity of azaborine compared with benzene renders the flexibility of the BN-fused tetrathia[8]circulenes.
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Affiliation(s)
- Shuhei Akahori
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8603, Japan)
| | - Takahiro Sasamori
- Department of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki, 305-8571, Japan
| | - Hiroshi Shinokubo
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8603, Japan)
| | - Yoshihiro Miyake
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8603, Japan)
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22
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Morimoto Y, Osuka A, Tanaka T. Synthesis, properties and reactivity of an ortho-phenylene-cyclopentene-bridged tetrapyrrole. J PORPHYR PHTHALOCYA 2021. [DOI: 10.1142/s1088424621500553] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Increasing the number of meso-methine carbons of porphyrin has led to a creation of a series of vinylogous expanded porphyrins, while the introduction of an ortho-phenylene-unit as a pyrrole-connecting two-carbon bridge usually leads to prevention of effective macrocyclic conjugation. Cyclopentene can serve as a conjugative bridge to increase the macrocyclic conjugation owing to its cis-geometry. In this work, ortho-phenylene-cyclopentene-bridged tetrapyrrole 5 was prepared on the basis of a coupling strategy. The tetrapyrrole 5 exhibited slightly more conjugative features as compared to ortho-phenylene-bridged tetrapyrrole 4. Oxidation of 5 with [bis(trifluoroacetoxy)iodo]benzene (PIFA) at low temperature afforded a partly fused tetrapyrrolic compound 9 having a spiro-connected pyrrolo[2,1-[Formula: see text]]isoindole moiety.
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Affiliation(s)
- Yuki Morimoto
- Department of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa Oiwake-cho, Sakyo-ku, Kyoto 606-8502, Japan
| | - Atsuhiro Osuka
- Department of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa Oiwake-cho, Sakyo-ku, Kyoto 606-8502, Japan
| | - Takayuki Tanaka
- Department of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa Oiwake-cho, Sakyo-ku, Kyoto 606-8502, Japan
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23
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Akahori S, Sasamori T, Shinokubo H, Miyake Y. Enthalpically and Entropically Favorable Self-Assembly: Synthesis of C 4h -Symmetric Tetraazatetrathia[8]circulenes by Regioselective Introduction of Pyridine Rings. Chemistry 2021; 27:5675-5682. [PMID: 33300177 DOI: 10.1002/chem.202005077] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Indexed: 11/07/2022]
Abstract
Self-assembly of π-conjugated molecules in solution generally occurs owing to either an enthalpic or an entropic gain; however, designing π-conjugated systems that simultaneously exhibit enthalpically and entropically favorable self-assembly behavior is challenging. Herein, the self-assembly behavior of tetraazatetrathia[8]circulenes is disclosed, which is driven by both enthalpy and entropy. Single-crystal X-ray diffraction analysis demonstrated that molecules of these tetraazatetrathia[8]circulenes form face-to-face stacked dimers with a 1D columnar structure owing to the circularly arranged dipole moments. Importantly, concentration- and temperature-dependent 1 H NMR spectra revealed that the formation of self-assemblies of tetraazatetrathia[8]circulenes in chloroform and methanol is favored by both enthalpic and entropic factors. The unique association behavior is due to the presence of sp2 -hybridized nitrogen atoms, which weakly coordinate to the hydrogen atoms of these solvents and reduce the π-electron density of the circulene cores.
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Affiliation(s)
- Shuhei Akahori
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 4648603, Japan
| | - Takahiro Sasamori
- Department of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki, 3058571, Japan
| | - Hiroshi Shinokubo
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 4648603, Japan
| | - Yoshihiro Miyake
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 4648603, Japan
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24
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Morimoto Y, Chen F, Matsuo Y, Kise K, Tanaka T, Osuka A. Improved Synthesis of ortho-Phenylene-bridged Cyclic Tetrapyrroles and Oxidative Fusion Reactions Toward Substituted Tetraaza[8]circulenes. Chem Asian J 2021; 16:648-655. [PMID: 33428328 DOI: 10.1002/asia.202001459] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2020] [Revised: 01/09/2021] [Indexed: 12/13/2022]
Abstract
Hetero[8]circulenes have emerged as novel functionalized heteronanographenes that show various promising functions such as bright fluorescence, charge transporting, and redox reactivities. One of the effective synthetic strategy is the fold-in type oxidative fusion reaction of ortho-phenylene-bridged cyclic tetrapyrroles, whose construction, however, is not well-sophisticated in terms of reproducibility and possibility for versatile derivatization. In this paper, a "reverse" coupling strategy has been developed, which enabled synthesis of opp-type low symmetric analogues of cyclic tetrapyrroles. Oxidative fusion reaction conditions to afford tetraaza[8]circulenes have also been reinvestigated and improved. Substituent effects of cyclic tetrapyrroles and tetrabenzotetraaza[8]circulenes are studied for solid-state structures and packing structures, redox potentials, and optical properties.
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Affiliation(s)
- Yuki Morimoto
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan
| | - Fengkun Chen
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan
| | - Yusuke Matsuo
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan
| | - Koki Kise
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan
| | - Takayuki Tanaka
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan
| | - Atsuhiro Osuka
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan
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25
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Banerjee A, Kundu S, Bhattacharyya A, Sahu S, Maji MS. Benzannulation strategies for the synthesis of carbazoles, indolocarbazoles, benzocarbazoles, and carbolines. Org Chem Front 2021. [DOI: 10.1039/d1qo00092f] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
This review presents a critical and authoritative analysis of several exciting benzannulation approaches developed in the past decade for the construction of carbazoles, indolocarbazoles, benzocarbazoles, and carbolines.
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Affiliation(s)
- Ankush Banerjee
- Department of Chemistry
- Indian Institute of Technology Kharagpur
- Kharagpur 721302
- India
| | - Samrat Kundu
- Department of Chemistry
- Indian Institute of Technology Kharagpur
- Kharagpur 721302
- India
| | - Arya Bhattacharyya
- Department of Chemistry
- Indian Institute of Technology Kharagpur
- Kharagpur 721302
- India
| | - Samrat Sahu
- Department of Chemistry
- Indian Institute of Technology Kharagpur
- Kharagpur 721302
- India
| | - Modhu Sudan Maji
- Department of Chemistry
- Indian Institute of Technology Kharagpur
- Kharagpur 721302
- India
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26
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Murase H, Nagata Y, Akahori S, Shinokubo H, Miyake Y. Aggregation-Induced Emission in Tetrathia[8]circulene Octaoxides via Restriction of the Dynamic Motion of their Negatively Curved π-Frameworks. Chem Asian J 2020; 15:3873-3877. [PMID: 32975006 DOI: 10.1002/asia.202001129] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Indexed: 11/05/2022]
Abstract
Curved polycyclic aromatic hydrocarbons exhibit intriguing properties, but their flexible and dynamic nature is often considered to be unfavorable for achieving excellent emission properties. In this study, we prepared tetrathia[8]circulene octaoxides that adopt a negatively curved conformation. We found that these molecules exhibit aggregation-induced emission (AIE) that originates from the restriction of the dynamic motion of their saddle-shaped π-frameworks in the solid and aggregated states.
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Affiliation(s)
- Hiroyasu Murase
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University Furo-cho, Chikusa-ku, Nagoya, 464-8603, Japan
| | - Yuya Nagata
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University Furo-cho, Chikusa-ku, Nagoya, 464-8603, Japan
| | - Shuhei Akahori
- 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
| | - Yoshihiro Miyake
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University Furo-cho, Chikusa-ku, Nagoya, 464-8603, Japan
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27
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Tasior M, Vakuliuk O, Koga D, Koszarna B, Górski K, Grzybowski M, Kielesiński Ł, Krzeszewski M, Gryko DT. Method for the Large-Scale Synthesis of Multifunctional 1,4-Dihydro-pyrrolo[3,2- b]pyrroles. J Org Chem 2020; 85:13529-13543. [PMID: 32907329 PMCID: PMC7656515 DOI: 10.1021/acs.joc.0c01665] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
![]()
A thorough investigation has enabled
the optimization of the synthesis
of 1,4-dihydro-pyrrolo[3,2-b]pyrroles. Although salts
of such metals as vanadium, niobium, cerium, and manganese were found
to facilitate the formation of 1,4-dihydro-pyrrolo[3,2-b]pyrroles from amines, aldehydes, and diacetyl, we confirmed that
iron salts are the most efficient catalysts. The conditions identified
(first step: toluene/AcOH = 1:1, 1 h, 50 °C; second step: toluene/AcOH
= 1:1, Fe(ClO4)3·H2O, 16 h,
50 °C) resulted in the formation of tetraarylpyrrolo[3,2-b]pyrroles in a 6–69% yield. For the first time,
very electron-rich substituents (4-Me2NC6H4, 3-(OH)C6H4, pyrrol-2-yl) originating
from aldehydes and sterically hindered substituents (2-ClC6H4, 2-BrC6H4, 2-CNC6H4, 2-(CO2Me)C6H4, 2-(TMS-C≡C)C6H4) present on anilines can be appended to the
pyrrolo[3,2-b]pyrrole core. It is now also possible
to prepare 1,4-dihydropyrrolo[3,2-b]pyrroles bearing
an ordered arrangement of N-substituents and C-substituents ranging from coumarin, quinoline, phthalimide
to truxene. These advances in scope enable independent regulations
of many desired photophysical properties, including the Stokes shift
value and emission color ranging from violet-blue through deep blue,
green, yellow to red. Simultaneously, the optimized conditions have
finally allowed the synthesis of these extremely promising heterocycles
in amounts of more than 10 g per run without a concomitant decrease
in yield or product contamination. Empowered with better functional
group compatibility, novel derivatization strategies were developed.
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Affiliation(s)
- Mariusz Tasior
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44-52, 01-224 Warsaw, Poland
| | - Olena Vakuliuk
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44-52, 01-224 Warsaw, Poland
| | - Daiki Koga
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44-52, 01-224 Warsaw, Poland
| | - Beata Koszarna
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44-52, 01-224 Warsaw, Poland
| | - Krzysztof Górski
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44-52, 01-224 Warsaw, Poland
| | - Marek Grzybowski
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44-52, 01-224 Warsaw, Poland
| | - Łukasz Kielesiński
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44-52, 01-224 Warsaw, Poland
| | - Maciej Krzeszewski
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44-52, 01-224 Warsaw, Poland
| | - Daniel T Gryko
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44-52, 01-224 Warsaw, Poland
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28
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Lee B, Willis AC, Ward JS, Smith WT, Lan P, Banwell MG. Iterative Suzuki-Miyaura Cross-coupling/Bromo-desilylation Reaction Sequences for the Assembly of Chemically Well-defined, Acyclic Oligopyrrole/Benzenoid Hybrids Embodying Mixed Modes of Connectivity. Chem Asian J 2020; 15:3059-3081. [PMID: 32749069 DOI: 10.1002/asia.202000740] [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: 06/26/2020] [Revised: 07/30/2020] [Indexed: 11/12/2022]
Abstract
Syntheses of a range of chemically well-defined oligopyrrole/benzenoid hybrids are described using tandem Suzuki-Miyaura cross-coupling/bromo-desilyation reaction sequences for linking borylated pyrroles, halogenated pyrroles and/or dibromobenzenes to one another. By such means, including iterative variants, a range of all α-linked, all β-linked oligopyrroles as well as certain combinations thereof have been assembled, some of them for the first time. The conductivities of iodine-treated thin films formed from certain such systems have been determined.
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Affiliation(s)
- BoRa Lee
- Research School of Chemistry, Institute of Advanced Studies, The Australian National University, Canberra, ACT 2601, Australia
| | - Anthony C Willis
- Research School of Chemistry, Institute of Advanced Studies, The Australian National University, Canberra, ACT 2601, Australia
| | - Jas S Ward
- Research School of Chemistry, Institute of Advanced Studies, The Australian National University, Canberra, ACT 2601, Australia
| | | | - Ping Lan
- Institute for Advanced and Applied Chemical Synthesis, Jinan University, Guangzhou, 510632/, Zhuhai, 519070, Guangdong, China
| | - Martin G Banwell
- Research School of Chemistry, Institute of Advanced Studies, The Australian National University, Canberra, ACT 2601, Australia.,Institute for Advanced and Applied Chemical Synthesis, Jinan University, Guangzhou, 510632/, Zhuhai, 519070, Guangdong, China
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29
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Matsuo Y, Tanaka T, Osuka A. Diazadimethano[8]circulene: Synthesis, Structure, Properties, and Isolation of Stable Radical Cation. CHEM LETT 2020. [DOI: 10.1246/cl.200336] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Yusuke Matsuo
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
| | - Takayuki Tanaka
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
| | - Atsuhiro Osuka
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
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30
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Pedersen SK, Eriksen K, Ågren H, Minaev BF, Karaush-Karmazin NN, Hammerich O, Baryshnikov GV, Pittelkow M. A Fully Conjugated Planar Heterocyclic [9]Circulene. J Am Chem Soc 2020; 142:14058-14063. [DOI: 10.1021/jacs.0c05898] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Stephan K. Pedersen
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen Ø, Denmark
| | - Kristina Eriksen
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen Ø, Denmark
| | - Hans Ågren
- Division of Theoretical Chemistry and Biology, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH, Royal Institute of Technology, 10691 Stockholm, Sweden
- College of Chemistry and Chemical Enginnering, Henan University, Kaifeng, Henan 475004, P. R. China
| | - Boris F. Minaev
- Department of Chemistry and Nanomaterials Science, Bohdan Khmelnytsky National University, 18031 Cherkasy, Ukraine
| | - Nataliya N. Karaush-Karmazin
- Department of Chemistry and Nanomaterials Science, Bohdan Khmelnytsky National University, 18031 Cherkasy, Ukraine
| | - Ole Hammerich
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen Ø, Denmark
| | - Glib V. Baryshnikov
- Division of Theoretical Chemistry and Biology, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH, Royal Institute of Technology, 10691 Stockholm, Sweden
- Department of Chemistry and Nanomaterials Science, Bohdan Khmelnytsky National University, 18031 Cherkasy, Ukraine
| | - Michael Pittelkow
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen Ø, Denmark
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31
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Skonieczny K, Papadopoulos I, Thiel D, Gutkowski K, Haines P, McCosker PM, Laurent AD, Keller PA, Clark T, Jacquemin D, Guldi DM, Gryko DT. How To Make Nitroaromatic Compounds Glow: Next-Generation Large X-Shaped, Centrosymmetric Diketopyrrolopyrroles. Angew Chem Int Ed Engl 2020; 59:16104-16113. [PMID: 32492240 PMCID: PMC7689858 DOI: 10.1002/anie.202005244] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Revised: 05/15/2020] [Indexed: 12/17/2022]
Abstract
Red‐emissive π‐expanded diketopyrrolopyrroles (DPPs) with fluorescence reaching λ=750 nm can be easily synthesized by a three‐step strategy involving the preparation of diketopyrrolopyrrole followed by N‐arylation and subsequent intramolecular palladium‐catalyzed direct arylation. Comprehensive spectroscopic assays combined with first‐principles calculations corroborated that both N‐arylated and fused DPPs reach a locally excited (S1) state after excitation, followed by internal conversion to states with solvent and structural relaxation, before eventually undergoing intersystem crossing. Only the structurally relaxed state is fluorescent, with lifetimes in the range of several nanoseconds and tens of picoseconds in nonpolar and polar solvents, respectively. The lifetimes correlate with the fluorescence quantum yields, which range from 6 % to 88 % in nonpolar solvents and from 0.4 % and 3.2 % in polar solvents. A very inefficient (T1) population is responsible for fluorescence quantum yields as high as 88 % for the fully fused DPP in polar solvents.
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Affiliation(s)
- Kamil Skonieczny
- Institute of Organic Chemistry, PAS. 44/52 Kasprzaka, 01-224, Warsaw, Poland
| | - Ilias Papadopoulos
- Department of Chemistry and Pharmacy & Interdisciplinary Center for Molecular Materials (ICMM), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Egerlandstrasse 3, 91058, Erlangen, Germany
| | - Dominik Thiel
- Department of Chemistry and Pharmacy & Interdisciplinary Center for Molecular Materials (ICMM), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Egerlandstrasse 3, 91058, Erlangen, Germany
| | - Krzysztof Gutkowski
- Institute of Organic Chemistry, PAS. 44/52 Kasprzaka, 01-224, Warsaw, Poland
| | - Philipp Haines
- Department of Chemistry and Pharmacy & Interdisciplinary Center for Molecular Materials (ICMM), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Egerlandstrasse 3, 91058, Erlangen, Germany
| | - Patrick M McCosker
- Department of Chemistry and Pharmacy & Computer-Chemie-Center (CCC), Friedrich-Alexander-Universität Erlangen-Nürnberg, Nägelsbachstrasse 25, 91052, Erlangen, Germany.,School of Chemistry & Molecular Bioscience, Molecular Horizons, University of Wollongong, Wollongong, NSW, 2522, Australia.,Illawarra Health & Medical Research Institute, Wollongong, NSW, 2522, Australia
| | - Adèle D Laurent
- Université de Nantes, CNRS, CEISAM UMR, 6230, Nantes, France
| | - Paul A Keller
- School of Chemistry & Molecular Bioscience, Molecular Horizons, University of Wollongong, Wollongong, NSW, 2522, Australia.,Illawarra Health & Medical Research Institute, Wollongong, NSW, 2522, Australia
| | - Timothy Clark
- Department of Chemistry and Pharmacy & Computer-Chemie-Center (CCC), Friedrich-Alexander-Universität Erlangen-Nürnberg, Nägelsbachstrasse 25, 91052, Erlangen, Germany
| | - Denis Jacquemin
- Université de Nantes, CNRS, CEISAM UMR, 6230, Nantes, France
| | - Dirk M Guldi
- Department of Chemistry and Pharmacy & Interdisciplinary Center for Molecular Materials (ICMM), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Egerlandstrasse 3, 91058, Erlangen, Germany
| | - Daniel T Gryko
- Institute of Organic Chemistry, PAS. 44/52 Kasprzaka, 01-224, Warsaw, Poland
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32
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Skonieczny K, Papadopoulos I, Thiel D, Gutkowski K, Haines P, McCosker PM, Laurent AD, Keller PA, Clark T, Jacquemin D, Guldi DM, Gryko DT. How To Make Nitroaromatic Compounds Glow: Next‐Generation Large X‐Shaped, Centrosymmetric Diketopyrrolopyrroles. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202005244] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Kamil Skonieczny
- Institute of Organic Chemistry PAS. 44/52 Kasprzaka 01-224 Warsaw Poland
| | - Ilias Papadopoulos
- Department of Chemistry and Pharmacy & Interdisciplinary Center for Molecular Materials (ICMM) Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) Egerlandstrasse 3 91058 Erlangen Germany
| | - Dominik Thiel
- Department of Chemistry and Pharmacy & Interdisciplinary Center for Molecular Materials (ICMM) Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) Egerlandstrasse 3 91058 Erlangen Germany
| | | | - Philipp Haines
- Department of Chemistry and Pharmacy & Interdisciplinary Center for Molecular Materials (ICMM) Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) Egerlandstrasse 3 91058 Erlangen Germany
| | - Patrick M. McCosker
- Department of Chemistry and Pharmacy & Computer-Chemie-Center (CCC) Friedrich-Alexander-Universität Erlangen-Nürnberg Nägelsbachstrasse 25 91052 Erlangen Germany
- School of Chemistry & Molecular Bioscience, Molecular Horizons University of Wollongong Wollongong NSW 2522 Australia
- Illawarra Health & Medical Research Institute Wollongong NSW 2522 Australia
| | | | - Paul A. Keller
- School of Chemistry & Molecular Bioscience, Molecular Horizons University of Wollongong Wollongong NSW 2522 Australia
- Illawarra Health & Medical Research Institute Wollongong NSW 2522 Australia
| | - Timothy Clark
- Department of Chemistry and Pharmacy & Computer-Chemie-Center (CCC) Friedrich-Alexander-Universität Erlangen-Nürnberg Nägelsbachstrasse 25 91052 Erlangen Germany
| | | | - Dirk M. Guldi
- Department of Chemistry and Pharmacy & Interdisciplinary Center for Molecular Materials (ICMM) Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) Egerlandstrasse 3 91058 Erlangen Germany
| | - Daniel T. Gryko
- Institute of Organic Chemistry PAS. 44/52 Kasprzaka 01-224 Warsaw Poland
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33
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Tanaka T. Synthesis and Properties of Tetraaza[8]circulene and its Analogs. J SYN ORG CHEM JPN 2020. [DOI: 10.5059/yukigoseikyokaishi.78.683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Takayuki Tanaka
- Department of Chemistry, Graduate School of Science, Kyoto University
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34
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Sulfikarali T, Ajay J, Suresh CH, Bijina PV, Gokulnath S. Synthesis, Structure, and Optical Properties of Di- m-benzihexaphyrins (1.1.0.0.0.0) and Di- m-benziheptaphyrins (1.0.1.0.0.0.0): Blackening of m-Phenylene-Linked Dicarbaporphyrinoids by Simple π-Expansion. J Org Chem 2020; 85:8021-8028. [PMID: 32390421 DOI: 10.1021/acs.joc.0c00754] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Acid-catalyzed condensation of a newly prepared di-m-benzipentapyrrane with appropriate mono- and diheterocyclic dialcohols selectively produced stable di-m-benzihexaphyrins and di-m-benziheptaphyrins with only two meso-carbon bridges. Single-crystal X-ray diffraction analyses reveal planar conformation with slight distortion of bridged phenylene rings. Despite the presence of m-phenylene units interrupting the global delocalization, the presence of bithiophene units in di-m-benziheptaphyrins 3a-b exhibits altered optical features covering the entire visible region (ca. 250-720 nm), exhibiting a black dye property as a "metal-free" porphyrinoid.
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Affiliation(s)
- Thondikkal Sulfikarali
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram, Thiruvananthapuram, Kerala 695551, India
| | - Jayaprakash Ajay
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram, Thiruvananthapuram, Kerala 695551, India
| | - Cherumuttathu H Suresh
- Inorganic and Theoretical Chemistry Section, Chemical Science and Technology Division, CSIR-National Institute of Interdisciplinary Science and Technology, Trivandrum, Kerala 695019, India
| | - Padinjare V Bijina
- Inorganic and Theoretical Chemistry Section, Chemical Science and Technology Division, CSIR-National Institute of Interdisciplinary Science and Technology, Trivandrum, Kerala 695019, India
| | - Sabapathi Gokulnath
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram, Thiruvananthapuram, Kerala 695551, India
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35
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Matsuo Y, Tanaka T, Osuka A. Highly Stable Radical Cations of N,N'-Diarylated Tetrabenzotetraaza[8]circulene. Chemistry 2020; 26:8144-8152. [PMID: 32342540 DOI: 10.1002/chem.202001934] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 04/24/2020] [Indexed: 01/09/2023]
Abstract
N,N'-Diarylated tetrabenzotetraaza[8]circulenes 3 a and 3 b were synthesized in good yields by a reaction sequence involving oxidation of tetrabenzodiazadithia[8]circulene 5-Oct and SN Ar reaction with aniline derivatives. The obtained aza[8]circulenes 3 a and 3 b were easily oxidized to give their radical cations 3 a+ and 3 b+ , which are highly stable under ambient conditions. X-ray diffraction analysis of radical cation 3 a+ showed a face-to-face dimer arrangement with an interplanar separation of 3.320 Å. The spin density of 3 a+ was calculated to be delocalized over the whole circulene π-systems with spin-spin exchange integral (J=-144 cm-1 ) in the dimeric part. These radical cations displayed far red-shifted absorption bands reaching to 2000 nm. Thus this study has proved the hetero[8]circulene scaffold to be a new entry of promising electronics and spin materials.
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Affiliation(s)
- Yusuke Matsuo
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan
| | - Takayuki Tanaka
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan
| | - Atsuhiro Osuka
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan
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36
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Nakamura K, Li QQ, Krejčí O, Foster AS, Sun K, Kawai S, Ito S. On-Surface Synthesis of a π-Extended Diaza[8]circulene. J Am Chem Soc 2020; 142:11363-11369. [PMID: 32413264 DOI: 10.1021/jacs.0c02534] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Heterocyclic [8]circulenes are an important class of polycyclic aromatic hydrocarbon molecules because of their unique structural properties and promising applications. However, the synthesis of heterocyclic [8]circulenes is still limited and thus is an important synthetic challenge. Here we describe the first example of a π-extended diaza[8]circulene surrounded by and fused with six hexagons and two pentagons, which was successfully synthesized only by a combined in-solution and on-surface synthetic strategy. State-of-the-art scanning tunneling microscopy with a CO-functionalized tip and density functional theory calculations revealed its planar conformation and unique electronic structure.
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Affiliation(s)
- Kimihiro Nakamura
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
| | - Qiang-Qiang Li
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
| | - Ondřej Krejčí
- Department of Applied Physics, Aalto University, Aalto 00076, Finland
| | - Adam S Foster
- Department of Applied Physics, Aalto University, Aalto 00076, Finland.,WPI Nano Life Science Institute (WPI-NanoLSI), Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
| | - Kewei Sun
- Research Center for Advanced Measurement and Characterization, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0047, Japan
| | - Shigeki Kawai
- Research Center for Advanced Measurement and Characterization, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0047, Japan
| | - Shingo Ito
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
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37
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Pedersen SK, Eriksen K, Karaush‐Karmazin NN, Minaev B, Ågren H, Baryshnikov GV, Pittelkow M. Anti‐Aromatic versus Induced Paratropicity: Synthesis and Interrogation of a Dihydro‐diazatrioxa[9]circulene with a Proton Placed Directly above the Central Ring. Angew Chem Int Ed Engl 2020; 59:5144-5150. [PMID: 31961984 DOI: 10.1002/anie.201913552] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Revised: 12/10/2019] [Indexed: 11/09/2022]
Affiliation(s)
- Stephan K. Pedersen
- University of CopenhagenDepartment of Chemistry Universitetsparken 5 2100 Copenhagen Ø Denmark
| | - Kristina Eriksen
- University of CopenhagenDepartment of Chemistry Universitetsparken 5 2100 Copenhagen Ø Denmark
| | | | - Boris Minaev
- Department of Chemistry and Nanomaterials ScienceBohdan Khmelnytsky National University 18031 Cherkasy Ukraine
| | - Hans Ågren
- Division of Theoretical Chemistry and BiologySchool of Engineering Sciences in Chemistry, Biotechnology and HealthKTH Royal Institute of Technology 10691 Stockholm Sweden
- College of Chemistry and Chemical EngineeringHenan University Kaifeng, Henan 475004 P. R. China
| | - Gleb V. Baryshnikov
- Division of Theoretical Chemistry and BiologySchool of Engineering Sciences in Chemistry, Biotechnology and HealthKTH Royal Institute of Technology 10691 Stockholm Sweden
| | - Michael Pittelkow
- University of CopenhagenDepartment of Chemistry Universitetsparken 5 2100 Copenhagen Ø Denmark
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38
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Lousen B, Pedersen SK, Bols P, Hansen KH, Pedersen MR, Hammerich O, Bondarchuk S, Minaev B, Baryshnikov GV, Ågren H, Pittelkow M. Compressing a Non‐Planar Aromatic Heterocyclic [7]Helicene to a Planar Hetero[8]Circulene. Chemistry 2020; 26:4935-4940. [DOI: 10.1002/chem.201905339] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Revised: 02/09/2020] [Indexed: 12/14/2022]
Affiliation(s)
- Bodil Lousen
- Department of ChemistryUniversity of Copenhagen Universitetsparken 5 2100 Copenhagen Ø Denmark
| | - Stephan K. Pedersen
- Department of ChemistryUniversity of Copenhagen Universitetsparken 5 2100 Copenhagen Ø Denmark
| | - Pernille Bols
- Department of ChemistryUniversity of Copenhagen Universitetsparken 5 2100 Copenhagen Ø Denmark
| | - Kasper H. Hansen
- Department of ChemistryUniversity of Copenhagen Universitetsparken 5 2100 Copenhagen Ø Denmark
| | - Michelle R. Pedersen
- Department of ChemistryUniversity of Copenhagen Universitetsparken 5 2100 Copenhagen Ø Denmark
| | - Ole Hammerich
- Department of ChemistryUniversity of Copenhagen Universitetsparken 5 2100 Copenhagen Ø Denmark
| | - Sergey Bondarchuk
- Department of Chemistry and Nanomaterials ScienceBohdan Khmelnytsky National University 18031 Cherkasy Ukraine
| | - Boris Minaev
- Department of Chemistry and Nanomaterials ScienceBohdan Khmelnytsky National University 18031 Cherkasy Ukraine
| | - Glib V. Baryshnikov
- Division of Theoretical Chemistry and BiologySchool of Engineering Sciences in Chemistry, Biotechnology and HealthKTH Royal Institute of Technology 10691 Stockholm Sweden
| | - Hans Ågren
- Division of Theoretical Chemistry and BiologySchool of Engineering Sciences in Chemistry, Biotechnology and HealthKTH Royal Institute of Technology 10691 Stockholm Sweden
- College of Chemistry and Chemical EngineeringHenan University Kaifeng Henan 475004 P. R. China
| | - Michael Pittelkow
- Department of ChemistryUniversity of Copenhagen Universitetsparken 5 2100 Copenhagen Ø Denmark
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39
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Pedersen SK, Eriksen K, Karaush‐Karmazin NN, Minaev B, Ågren H, Baryshnikov GV, Pittelkow M. Anti‐Aromatic versus Induced Paratropicity: Synthesis and Interrogation of a Dihydro‐diazatrioxa[9]circulene with a Proton Placed Directly above the Central Ring. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201913552] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Stephan K. Pedersen
- University of CopenhagenDepartment of Chemistry Universitetsparken 5 2100 Copenhagen Ø Denmark
| | - Kristina Eriksen
- University of CopenhagenDepartment of Chemistry Universitetsparken 5 2100 Copenhagen Ø Denmark
| | | | - Boris Minaev
- Department of Chemistry and Nanomaterials ScienceBohdan Khmelnytsky National University 18031 Cherkasy Ukraine
| | - Hans Ågren
- Division of Theoretical Chemistry and BiologySchool of Engineering Sciences in Chemistry, Biotechnology and HealthKTH Royal Institute of Technology 10691 Stockholm Sweden
- College of Chemistry and Chemical EngineeringHenan University Kaifeng, Henan 475004 P. R. China
| | - Gleb V. Baryshnikov
- Division of Theoretical Chemistry and BiologySchool of Engineering Sciences in Chemistry, Biotechnology and HealthKTH Royal Institute of Technology 10691 Stockholm Sweden
| | - Michael Pittelkow
- University of CopenhagenDepartment of Chemistry Universitetsparken 5 2100 Copenhagen Ø Denmark
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40
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Grzybowski M, Sadowski B, Butenschön H, Gryko DT. Synthetic Applications of Oxidative Aromatic Coupling-From Biphenols to Nanographenes. Angew Chem Int Ed Engl 2020; 59:2998-3027. [PMID: 31342599 PMCID: PMC7027897 DOI: 10.1002/anie.201904934] [Citation(s) in RCA: 173] [Impact Index Per Article: 43.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2019] [Revised: 06/28/2019] [Indexed: 12/31/2022]
Abstract
Oxidative aromatic coupling occupies a fundamental place in the modern chemistry of aromatic compounds. It is a method of choice for the assembly of large and bewildering architectures. Considerable effort was also devoted to applications of the Scholl reaction for the synthesis of chiral biphenols and natural products. The ability to form biaryl linkages without any prefunctionalization provides an efficient pathway to many complex structures. Although the chemistry of this process is only now becoming fully understood, this reaction continues to both fascinate and challenge researchers. This is especially true for heterocoupling, that is, oxidative aromatic coupling with the chemoselective formation of a C-C bond between two different arenes. Analysis of the progress achieved in this field since 2013 reveals that many groups have contributed by pushing the boundary of structural possibilities, expanding into surface-assisted (cyclo)dehydrogenation, and developing new reagents.
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Affiliation(s)
- Marek Grzybowski
- Institute of Organic ChemistryPolish Academy of SciencesKasprzaka 44/5201-224WarsawPoland
| | - Bartłomiej Sadowski
- Institute of Organic ChemistryPolish Academy of SciencesKasprzaka 44/5201-224WarsawPoland
| | - Holger Butenschön
- Institut für Organische ChemieLeibniz Universität HannoverSchneiderberg 1B30167HannoverGermany
| | - Daniel T. Gryko
- Institute of Organic ChemistryPolish Academy of SciencesKasprzaka 44/5201-224WarsawPoland
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41
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Li C, Zhang K, Ishida M, Li Q, Shimomura K, Baryshnikov G, Li X, Savage M, Wu XY, Yang S, Furuta H, Xie Y. Tripyrrin-armed isosmaragdyrins: synthesis, heterodinuclear coordination, and protonation-triggered helical inversion. Chem Sci 2020; 11:2790-2795. [PMID: 34084339 PMCID: PMC8157612 DOI: 10.1039/c9sc06197e] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Oxidative ring closure of linear oligopyrroles is one of the synthetic approaches to novel porphyrinoids with dinuclear coordination sites and helical chirality. The spatial arrangement of the pyrrolic groups of octapyrrole (P8) affected the position of the intramolecular oxidative coupling of the pyrrolic units; tripyrrin-armed isosmaragdyrin analogue (1) containing a β,β-linked bipyrrole moiety was synthesized regioselectively in a high yield by using FeCl3. NiII-coordination at the armed tripyrrin site of 1 allowed the formation of diastereomeric helical twisted complexes (2A and 2B) and succeeding CuII-coordination at the macrocyclic core afforded heterodinuclear NiII/CuII-complexes (3A and 3B). Each of them comprised a pair of separable enantiomers, exhibiting P- and M-helices, respectively. Notably, diastereomeric interconversion from 2A to 2B was quantitatively achieved as a consequence of helical transformation under acidic conditions.
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Affiliation(s)
- Chengjie Li
- Key Laboratory for Advanced Materials, Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering, East China University of Science & Technology Shanghai 200237 China
| | - Kai Zhang
- Key Laboratory for Advanced Materials, Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering, East China University of Science & Technology Shanghai 200237 China
| | - Masatoshi Ishida
- Department of Chemistry and Biochemistry, Graduate School of Engineering, Center for Molecular Systems, Kyushu University Fukuoka 819-0395 Japan
| | - Qizhao Li
- Key Laboratory for Advanced Materials, Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering, East China University of Science & Technology Shanghai 200237 China
| | - Keito Shimomura
- Department of Chemistry and Biochemistry, Graduate School of Engineering, Center for Molecular Systems, Kyushu University Fukuoka 819-0395 Japan
| | - Glib Baryshnikov
- School of Biotechnology, KTH Royal Institute of Technology SE-10691 Stockholm Sweden
| | - Xin Li
- School of Biotechnology, KTH Royal Institute of Technology SE-10691 Stockholm Sweden
| | - Mathew Savage
- School of Chemistry, University of Manchester Manchester M13 9PL UK
| | - Xin-Yan Wu
- Key Laboratory for Advanced Materials, Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering, East China University of Science & Technology Shanghai 200237 China
| | - Sihai Yang
- School of Chemistry, University of Manchester Manchester M13 9PL UK
| | - Hiroyuki Furuta
- Department of Chemistry and Biochemistry, Graduate School of Engineering, Center for Molecular Systems, Kyushu University Fukuoka 819-0395 Japan
| | - Yongshu Xie
- Key Laboratory for Advanced Materials, Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering, East China University of Science & Technology Shanghai 200237 China
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42
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Miyake Y, Shinokubo H. Hetero[8]circulenes: synthetic progress and intrinsic properties. Chem Commun (Camb) 2020; 56:15605-15614. [DOI: 10.1039/d0cc06495e] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Synthetic route for hetero[8]circulenes are classified into the annulative construction of eight-membered ring and the peripheral ring fusion of eight-membered ring. Post-transformation enables the tuning of structural features and electronic nature.
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Affiliation(s)
- Yoshihiro Miyake
- Department of Molecular and Macromolecular Chemistry
- Graduate School of Engineering
- Nagoya University
- Nagoya 464-8603
- Japan
| | - Hiroshi Shinokubo
- Department of Molecular and Macromolecular Chemistry
- Graduate School of Engineering
- Nagoya University
- Nagoya 464-8603
- Japan
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43
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Ogawa K, Tanaka S, Shimura K. Synthesis and fluorescence properties of butadiyne-linked linear and cyclic carbazole oligomers. RSC Adv 2020; 10:9657-9662. [PMID: 35497230 PMCID: PMC9050127 DOI: 10.1039/d0ra00830c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Accepted: 02/27/2020] [Indexed: 11/21/2022] Open
Abstract
Planar macrocycles exhibite blue emission whereas flexible ones emit near white light.
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Affiliation(s)
- Kazuya Ogawa
- Graduate Faculty of Interdisciplinary Research
- University of Yamanashi
- Yamanashi 400-8511
- Japan
| | - Shohei Tanaka
- Graduate Faculty of Interdisciplinary Research
- University of Yamanashi
- Yamanashi 400-8511
- Japan
| | - Kyosuke Shimura
- Graduate Faculty of Interdisciplinary Research
- University of Yamanashi
- Yamanashi 400-8511
- Japan
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44
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Matsuo Y, Chen F, Kise K, Tanaka T, Osuka A. Facile synthesis of fluorescent hetero[8]circulene analogues with tunable solubilities and optical properties. Chem Sci 2019; 10:11006-11012. [PMID: 32110354 PMCID: PMC7012041 DOI: 10.1039/c9sc05087f] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Accepted: 10/29/2019] [Indexed: 01/05/2023] Open
Abstract
Hetero[8]circulenes are an interesting class of polycyclic heteroaromatic molecules having rigid and planar structures, which are promising in light of their potential applications for OLEDs, OFETs and so forth. Although their synthetic methods have been developed in some specific cases, a facile synthetic protocol of novel hetero[8]circulenes with tunable properties is highly desirable. We herein report the unexpected formation of methoxy-substituted quasi-aza[8]circulene and its conversion into unprecedented triazaoxa[8]circulene. The structures and optical properties were comparatively studied. Remarkably, triazaoxa[8]circulene is highly soluble in THF, acetone and DMSO mainly because of effective hydrogen-bonding of the NH moieties to these solvents. Their highly soluble nature in various solvents enabled us to study the solvent effects of these molecules. In particular, triazaoxa[8]circulene displays a high fluorescence quantum yield of 0.72 in DMSO. Furthermore, enantiomeric separation of highly distorted quasi-aza[8]circulene was successfully achieved by chiral HPLC. Thus, these novel hetero[8]circulene derivatives are practically useful fluorescent nanographene-like molecules with intriguing optical properties.
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Affiliation(s)
- Yusuke Matsuo
- Department of Chemistry , Graduate School of Science , Kyoto University , Sakyo-ku , Kyoto 606-8502 , Japan .
| | - Fengkun Chen
- Department of Chemistry , Graduate School of Science , Kyoto University , Sakyo-ku , Kyoto 606-8502 , Japan .
| | - Koki Kise
- Department of Chemistry , Graduate School of Science , Kyoto University , Sakyo-ku , Kyoto 606-8502 , Japan .
| | - Takayuki Tanaka
- Department of Chemistry , Graduate School of Science , Kyoto University , Sakyo-ku , Kyoto 606-8502 , Japan .
| | - Atsuhiro Osuka
- Department of Chemistry , Graduate School of Science , Kyoto University , Sakyo-ku , Kyoto 606-8502 , Japan .
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45
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Grzybowski M, Sadowski B, Butenschön H, Gryko DT. Syntheseanwendungen der oxidativen aromatischen Kupplung – von Biphenolen zu Nanographenen. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201904934] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Marek Grzybowski
- Institute of Organic Chemistry Polish Academy of Sciences Kasprzaka 44/52 01-224 Warschau Polen
| | - Bartłomiej Sadowski
- Institute of Organic Chemistry Polish Academy of Sciences Kasprzaka 44/52 01-224 Warschau Polen
| | - Holger Butenschön
- Institut für Organische Chemie Leibniz Universität Hannover Schneiderberg 1B 30167 Hannover Deutschland
| | - Daniel T. Gryko
- Institute of Organic Chemistry Polish Academy of Sciences Kasprzaka 44/52 01-224 Warschau Polen
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46
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Kato S, Akahori S, Serizawa Y, Lin X, Yamauchi M, Yagai S, Sakurai T, Matsuda W, Seki S, Shinokubo H, Miyake Y. Systematic Synthesis of Tetrathia[8]circulenes: The Influence of Peripheral Substituents on the Structures and Properties in Solution and Solid States. J Org Chem 2019; 85:62-69. [DOI: 10.1021/acs.joc.9b01655] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Shohei Kato
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Furo-cho, Chikusa-ku, Nagoya University, Nagoya, 464-8603, Japan
| | - Shuhei Akahori
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Furo-cho, Chikusa-ku, Nagoya University, Nagoya, 464-8603, Japan
| | - Yuma Serizawa
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Furo-cho, Chikusa-ku, Nagoya University, Nagoya, 464-8603, Japan
| | - Xu Lin
- Department of Applied Chemistry and Biotechnology, Graduate School of Engineering, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
| | - Mitsuaki Yamauchi
- Department of Applied Chemistry and Biotechnology, Graduate School of Engineering, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
| | - Shiki Yagai
- Institute for Global Prominent Research (IGPR), Chiba University, 1-33, Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
| | - Tsuneaki Sakurai
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Wakana Matsuda
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Shu Seki
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Hiroshi Shinokubo
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Furo-cho, Chikusa-ku, Nagoya University, Nagoya, 464-8603, Japan
| | - Yoshihiro Miyake
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Furo-cho, Chikusa-ku, Nagoya University, Nagoya, 464-8603, Japan
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47
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Chen F, Kim J, Matsuo Y, Hong Y, Kim D, Tanaka T, Osuka A. ortho
‐Phenylene‐Bridged Hybrid Nanorings of 2,5‐Pyrrolylenes and 2,5‐Thienylenes. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201900168] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Fengkun Chen
- Department of Chemistry, Graduate School of ScienceKyoto University Kitashirakawa Oiwake-cho, Sakyo-ku, Kyoto 606-8502 Japan
| | - Jinseok Kim
- Spectroscopy Laboratory for Functional p-Electronic Systems and Department of ChemistryYonsei University50, Yonsei-ro Seodaemun-gu, Seoul 03722 Korea
| | - Yusuke Matsuo
- Department of Chemistry, Graduate School of ScienceKyoto University Kitashirakawa Oiwake-cho, Sakyo-ku, Kyoto 606-8502 Japan
| | - Yongseok Hong
- Spectroscopy Laboratory for Functional p-Electronic Systems and Department of ChemistryYonsei University50, Yonsei-ro Seodaemun-gu, Seoul 03722 Korea
| | - Dongho Kim
- Spectroscopy Laboratory for Functional p-Electronic Systems and Department of ChemistryYonsei University50, Yonsei-ro Seodaemun-gu, Seoul 03722 Korea
| | - Takayuki Tanaka
- Department of Chemistry, Graduate School of ScienceKyoto University Kitashirakawa Oiwake-cho, Sakyo-ku, Kyoto 606-8502 Japan
| | - Atsuhiro Osuka
- Department of Chemistry, Graduate School of ScienceKyoto University Kitashirakawa Oiwake-cho, Sakyo-ku, Kyoto 606-8502 Japan
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48
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Sasaki Y, Takase M, Okujima T, Mori S, Uno H. Synthesis and Redox Properties of Pyrrole- and Azulene-Fused Azacoronene. Org Lett 2019; 21:1900-1903. [PMID: 30835482 DOI: 10.1021/acs.orglett.9b00515] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Synthesis of an azacoronene, in which both pyrrole and azulene moieties are circularly fused, was achieved just in three steps. This new azacoronene exhibited multistep reversible oxidations under electrochemical and chemical conditions. Formation of an aromatic 22π-electron conjugation and a tropylium cation (6π-electron conjugation) in the dicationic state was revealed by the single-crystal X-ray crystallographic analysis as well as the nucleus-independent chemical shift (NICS) and anisotropy of the induced current density (ACID) calculations.
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Affiliation(s)
- Yoshiki Sasaki
- Graduate School of Science and Engineering , Ehime University , Matsuyama 790-8577 , Japan
| | - Masayoshi Takase
- Graduate School of Science and Engineering , Ehime University , Matsuyama 790-8577 , Japan
| | - Tetsuo Okujima
- Graduate School of Science and Engineering , Ehime University , Matsuyama 790-8577 , Japan
| | - Shigeki Mori
- Advanced Research Support Center , Ehime University , Matsuyama 790-8577 , Japan
| | - Hidemitsu Uno
- Graduate School of Science and Engineering , Ehime University , Matsuyama 790-8577 , Japan
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49
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Doping Sumanene with Both Chalcogens and Phosphorus(V): One‐Step Synthesis, Coordination, and Selective Response Toward Ag
I. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201813070] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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50
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Wang S, Yan C, Shang J, Wang W, Yuan C, Zhang HL, Shao X. Doping Sumanene with Both Chalcogens and Phosphorus(V): One-Step Synthesis, Coordination, and Selective Response Toward Ag I. Angew Chem Int Ed Engl 2019; 58:3819-3823. [PMID: 30672088 DOI: 10.1002/anie.201813070] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Revised: 01/03/2019] [Indexed: 02/05/2023]
Abstract
Heterasumanenes 4-6 containing chalcogen (S, Se, and Te) and phosphorus atoms have been synthesized in a one-pot reaction from trichalcogenasumanenes 1-3 by replacing one chalcogen atom with a P=S unit. The P=S unit makes 4-6 almost planar and shrinks the HOMO-LUMO gap as compared to 1-3. The bonding between Ag+ and S atom on P=S brings about a distinct change to the optical properties of 4-6; 4 in particular shows a selective fluorescence response toward Ag+ with LOD of 0.21 μm. Compounds 4-6 form complexes with AgNO3 to be (4)2 ⋅AgNO3 , (5)2 ⋅AgNO3 , and (6)2 ⋅(AgNO3 )3 . In complexes, the coordination between Ag+ and P=S is observed, which leads to shrinkage of C-P and C-X (X=S, Se, Te) bond lengths. As a result, 4, 5, and 6 are all bowl-shaped in complexes with bowl-depths reaching to 0.66 Å, 0.42 Å, and 0.40 Å, respectively. There are Ag-Te dative bonds between Ag+ and Te atom on telluorophene in (6)2 ⋅(AgNO3 )3 .
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Affiliation(s)
- Shitao Wang
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Tianshui Southern Road 222, Lanzhou, 730000, China
| | - Chaoxian Yan
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Tianshui Southern Road 222, Lanzhou, 730000, China
| | - Jihai Shang
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Tianshui Southern Road 222, Lanzhou, 730000, China
| | - Wenbo Wang
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Tianshui Southern Road 222, Lanzhou, 730000, China
| | - Chengshan Yuan
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Tianshui Southern Road 222, Lanzhou, 730000, China
| | - Hao-Li Zhang
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Tianshui Southern Road 222, Lanzhou, 730000, China
| | - Xiangfeng Shao
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Tianshui Southern Road 222, Lanzhou, 730000, China
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