1
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Kopp SM, Redman AJ, Rončević I, Schröder L, Bogani L, Anderson HL, Timmel CR. Charge and Spin Transfer Dynamics in a Weakly Coupled Porphyrin Dimer. J Am Chem Soc 2024. [PMID: 39042706 DOI: 10.1021/jacs.4c04186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/25/2024]
Abstract
The dynamics of electron and spin transfer in the radical cation and photogenerated triplet states of a tetramethylbiphenyl-linked zinc-porphyrin dimer were investigated, so as to test the relevant parameters for the design of a single-molecule spin valve and the creation of a novel platform for the photogeneration of high-multiplicity spin states. We used a combination of multiple techniques, including variable-temperature continuous wave EPR, pulsed proton electron-nuclear double resonance (ENDOR), transient EPR, and optical spectroscopy. The conclusions are further supported by density functional theory (DFT) calculations and comparison to reference compounds. The low-temperature cw-EPR and room-temperature near-IR spectra of the dimer monocation demonstrate that the radical cation is spatially localized on one side of the dimer at any point in time, not coherently delocalized over both porphyrin units. The EPR spectra at 298 K reveal rapid hopping of the radical spin density between both sites of the dimer via reversible intramolecular electron transfer. The hyperfine interactions are modulated by electron transfer and can be quantified using ENDOR spectroscopy. This allowed simulation of the variable-temperature cw-EPR spectra with a two-site exchange model and provided information on the temperature-dependence of the electron transfer rate. The electron transfer rates range from about 10.0 MHz at 200 K to about 53.9 MHz at 298 K. The activation enthalpies Δ‡H of the electron transfer were determined as Δ‡H = 9.55 kJ mol-1 and Δ‡H = 5.67 kJ mol-1 in a 1:1:1 solvent mixture of CD2Cl2/toluene-d8/THF-d8 and in 2-methyltetrahydrofuran, respectively, consistent with a Robin-Day class II mixed valence compound. These results indicate that the interporphyrin electronic coupling in a tetramethylbiphenyl-linked porphyrin dimer is suitable for the backbone of a single-molecule spin valve. Investigation of the spin density distribution of the photogenerated triplet state of the Zn-porphyrin dimer reveals localization of the triplet spin density on a nanosecond time scale on one-half of the dimer at 20 K in 2-methyltetrahydrofuran and at 250 K in a polyvinylcarbazole film. This establishes the porphyrin dimer as a molecular platform for the formation of a localized, photogenerated triplet state on one porphyrin unit that is coupled to a second redox-active, ground-state porphyrin unit, which can be explored for the formation of high-multiplicity spin states.
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Affiliation(s)
- Sebastian M Kopp
- Centre for Advanced Electron Spin Resonance, Department of Chemistry, University of Oxford, Oxford, OX1 3QR, U.K
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Oxford, OX1 3TA, U.K
| | - Ashley J Redman
- Centre for Advanced Electron Spin Resonance, Department of Chemistry, University of Oxford, Oxford, OX1 3QR, U.K
| | - Igor Rončević
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Oxford, OX1 3TA, U.K
| | - Lisa Schröder
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Oxford, OX1 3TA, U.K
| | - Lapo Bogani
- Department of Materials, University of Oxford, Oxford, OX1 3PH, U.K
| | - Harry L Anderson
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Oxford, OX1 3TA, U.K
| | - Christiane R Timmel
- Centre for Advanced Electron Spin Resonance, Department of Chemistry, University of Oxford, Oxford, OX1 3QR, U.K
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2
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Sakamaki T, Zhang Y, Fukuma S, Cruz CM, Valdivia AC, Campaña AG, Casado J, Shang R, Nakamura E. Doubly Spiro-Conjugated Chiral Carbocycles Exhibiting SOMO-HOMO Inversion in Persistent Radical Cations. J Am Chem Soc 2024; 146:12712-12722. [PMID: 38655573 DOI: 10.1021/jacs.4c02404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/26/2024]
Abstract
Persistent chiral organic open-shell systems have captured growing interest due to their potential applications in organic spintronic and optoelectronic devices. Nevertheless, the integration of configurationally stable chirality into an organic open-shell system continues to pose challenges in molecular design. The π-extended skeleton incorporated in spiro-conjugated carbocycles can provide robust chiroptical properties and a significant stabilization of the excited and ionic radical states. However, this approach has been relatively less explored in the design of persistent organic open-shell systems. We report here the (S,S)-, (R,R)-, and meso-isomers of doubly spiro-conjugated carbocycles featuring flat and rigid carbon-bridged para-phenylenevinylene (CPV) of different conjugation lengths connected by two spiro-carbon centers, which we denote D-spiro-CPV for its quasi-dimeric structure. Our synthetic method based on a double lithiation cyclization approach enables facile production of D-spiro-CPV. D-spiro-CPVs exhibit circularly polarized luminescence (CPL) with high fluorescence quantum yields (ΦFL) resulting in a high CPL brightness of 21 M-1 cm-1 and also exhibit high thermal and photostability. The monoradical cation of D-spiro-CPV absorbing near-infrared light is notably persistent, exhibiting a half-life of 570 h under ambient conditions due to doubly spiro-conjugative stabilization. Theoretical and electrochemical studies indicate the radical cation of D-spiro-CPVs presents a non-Aufbau electron filling, exhibiting inversion of the energy level of the singly occupied molecular orbital (SOMO) and the highest (doubly) occupied molecular orbitals with the SOMO level even below the HOMO-1 level (double SHI effect). Our discoveries provide valuable insights into non-Aufbau molecules and the development of configurationally stable, optically active persistent radicals.
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Affiliation(s)
- Takumi Sakamaki
- Department of Chemistry, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Yan Zhang
- Department of Chemistry, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Shota Fukuma
- Department of Chemistry, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Carlos M Cruz
- Departamento de Química Orgánica, Facultad de Ciencias, Unidad de Excelencia de Química Aplicada a Biomedicina y Medioambiente (UEQ), Universidad de Granada (UGR), Avenida Fuente Nueva s/n, 18071 Granada, Spain
| | - Abel Cárdenas Valdivia
- Department of Physical Chemistry, Faculty of Science, University of Málaga, Campus de Teatinos, s/n, 29071 Málaga, Spain
| | - Araceli G Campaña
- Departamento de Química Orgánica, Facultad de Ciencias, Unidad de Excelencia de Química Aplicada a Biomedicina y Medioambiente (UEQ), Universidad de Granada (UGR), Avenida Fuente Nueva s/n, 18071 Granada, Spain
| | - Juan Casado
- Department of Physical Chemistry, Faculty of Science, University of Málaga, Campus de Teatinos, s/n, 29071 Málaga, Spain
| | - Rui Shang
- Department of Chemistry, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Eiichi Nakamura
- Department of Chemistry, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
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3
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Tsuji H. Carbon-bridged Oligo(phenylenevinylene)s that Reveal Cryogenic Phenomena at Room Temperature. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2022. [DOI: 10.1246/bcsj.20220041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Hayato Tsuji
- Kanagawa University, 2946 Tsuchiya, Hiratsuka 259-1293
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4
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Chen M, Sato W, Shang R, Nakamura E. Iron-Catalyzed Tandem Cyclization of Diarylacetylene to a Strained 1,4-Dihydropentalene Framework for Narrow-Band-Gap Materials. J Am Chem Soc 2021; 143:6823-6828. [PMID: 33929185 DOI: 10.1021/jacs.1c03394] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Carbon bridging in a form of a strained 1,4-dihydropentalene framework is an effective strategy for flattening and stabilizing oligophenylenevinylene systems for the development of optoelectronic materials. However, efficient and flexible methods for making such a strained ring system are lacking. We report herein a mild and versatile synthetic access to the 1,4-dihydropentalene framework enabled by iron-catalyzed single-pot tandem cyclization of a diarylacetylene using FeCl2 and PPh3 as catalyst, magnesium/LiCl as a reductant, and 1,2-dichloropropane as a mild oxidant. The new annulation method features two iron-catalyzed transformations used in tandem, a reductive acetylenic carboferration and an oxidation-induced ring contraction of a ferracycle under mild oxidative conditions. The new method provides access not only to a variety of substituted indeno[2,1-a]indenes but also to their thiophene congeners, 4,9-dihydrobenzo[4,5]pentaleno[1,2-b]thiophene (CPTV) and 4,8-dihydropentaleno[1,2-b:4,5-b']dithiophenes (CTV). With its high highest occupied molecular orbital level and narrow optical gap, CTV serves as a donor unit in a narrow-band-gap non-fullerene acceptor, which shows absorption extending over 1000 nm in the film state, and has found use in a near-infrared photodetector device that exhibited an external quantum efficiency of 72.4% at 940 nm.
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Affiliation(s)
- Mengqing Chen
- Department of Chemistry, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Wataru Sato
- Department of Chemistry, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Rui Shang
- Department of Chemistry, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Eiichi Nakamura
- Department of Chemistry, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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5
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Medina Rivero S, Shang R, Hamada H, Yan Q, Tsuji H, Nakamura E, Casado J. Non-Aufbau Spiro-Conjugated Quinoidal & Aromatic Charged Radicals. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2021. [DOI: 10.1246/bcsj.20200385] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Samara Medina Rivero
- Department of Physical Chemistry, Faculty of Science, University of Málaga, Campus de Teatinos, s/n, 29071 Málaga, Spain
| | - Rui Shang
- Department of Chemistry, The University of Tokyo, Tokyo 113-0033, Japan
| | - Hiroyoshi Hamada
- Department of Chemistry, The University of Tokyo, Tokyo 113-0033, Japan
| | - Qifan Yan
- Department of Chemistry, The University of Tokyo, Tokyo 113-0033, Japan
| | - Hayato Tsuji
- Department of Chemistry, The University of Tokyo, Tokyo 113-0033, Japan
- Department of Chemistry, Faculty of Science, Kanagawa University, 2946 Tsuchiya, Hiratsuka, Kanagawa 259-1293, Japan
| | - Eiichi Nakamura
- Department of Chemistry, The University of Tokyo, Tokyo 113-0033, Japan
| | - Juan Casado
- Department of Physical Chemistry, Faculty of Science, University of Málaga, Campus de Teatinos, s/n, 29071 Málaga, Spain
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6
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Hayashi H, Barker JE, Cárdenas Valdivia A, Kishi R, MacMillan SN, Gómez-García CJ, Miyauchi H, Nakamura Y, Nakano M, Kato SI, Haley MM, Casado J. Monoradicals and Diradicals of Dibenzofluoreno[3,2- b]fluorene Isomers: Mechanisms of Electronic Delocalization. J Am Chem Soc 2020; 142:20444-20455. [PMID: 33206516 DOI: 10.1021/jacs.0c09588] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The preparation of a series of dibenzo- and tetrabenzo-fused fluoreno[3,2-b]fluorenes is disclosed, and the diradicaloid properties of these molecules are compared with those of a similar, previously reported series of anthracene-based diradicaloids. Insights on the diradical mode of delocalization tuning by constitutional isomerism of the external naphthalenes has been explored by means of the physical approach (dissection of the electronic properties in terms of electronic repulsion and transfer integral) of diradicals. This study has also been extended to the redox species of the two series of compounds and found that the radical cations have the same stabilization mode by delocalization that the neutral diradicals while the radical anions, contrarily, are stabilized by aromatization of the central core. The synthesis of the fluorenofluorene series and their characterization by electronic absorption and vibrational Raman spectroscopies, X-ray diffraction, SQUID measurements, electrochemistry, in situ UV-vis-NIR absorption spectroelectrochemistry, and theoretical calculations are presented. This work attempts to unify the properties of different series of diradicaloids in a common argument as well as the properties of the carbocations and carbanions derived from them.
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Affiliation(s)
- Hideki Hayashi
- Department of Materials Science, School of Engineering, The University of Shiga Prefecture, 2500 Hassaka-cho, Hikone, Shiga 522-8533, Japan
| | - Joshua E Barker
- Department of Chemistry & Biochemistry and the Materials Science Institute, University of Oregon, Eugene, Oregon 97403-1253, United States
| | - Abel Cárdenas Valdivia
- Department of Physical Chemistry, University of Malaga, Campus de Teatinos s/n, Malaga 29071, Spain
| | - Ryohei Kishi
- Department of Materials Engineering Science, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
- Quantum Information and Quantum Biology Division, Institute for Open and Transdisciplinary Research Initiatives, Osaka University, Toyonaka, Osaka 560-8531, Japan
| | - Samantha N MacMillan
- Department of Chemistry & Chemical Biology, Cornell University, Ithaca, New York 14853, United States
| | - Carlos J Gómez-García
- Department of Inorganic Chemistry and Instituto de Ciencia Molecular, Universidad de Valencia, Paterna 46980, Spain
| | - Hidenori Miyauchi
- Division of Molecular Science, Faculty of Science and Technology, Gunma University, 1-5-1 Tenjin-cho, Kiryu, Gunma 376-8515, Japan
| | - Yosuke Nakamura
- Division of Molecular Science, Faculty of Science and Technology, Gunma University, 1-5-1 Tenjin-cho, Kiryu, Gunma 376-8515, Japan
| | - Masayoshi Nakano
- Department of Materials Engineering Science, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
- Center for Spintronics Research Network, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
- Quantum Information and Quantum Biology Division, Institute for Open and Transdisciplinary Research Initiatives, Osaka University, Toyonaka, Osaka 560-8531, Japan
| | - Shin-Ichiro Kato
- Department of Materials Science, School of Engineering, The University of Shiga Prefecture, 2500 Hassaka-cho, Hikone, Shiga 522-8533, Japan
| | - Michael M Haley
- Department of Chemistry & Biochemistry and the Materials Science Institute, University of Oregon, Eugene, Oregon 97403-1253, United States
| | - Juan Casado
- Department of Physical Chemistry, University of Malaga, Campus de Teatinos s/n, Malaga 29071, Spain
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7
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Lu H, Nakamuro T, Yamashita K, Yanagisawa H, Nureki O, Kikkawa M, Gao H, Tian J, Shang R, Nakamura E. B/N-Doped p-Arylenevinylene Chromophores: Synthesis, Properties, and Microcrystal Electron Crystallographic Study. J Am Chem Soc 2020; 142:18990-18996. [DOI: 10.1021/jacs.0c10337] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hua Lu
- Department of Chemistry, School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
- Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou 311121, China
| | - Takayuki Nakamuro
- Department of Chemistry, School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Keitaro Yamashita
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Tokyo 113-0033, Japan
| | - Haruaki Yanagisawa
- Department of Cell Biology and Anatomy, Graduate School of Medicine, The University of Tokyo, Tokyo 113-0033, Japan
| | - Osamu Nureki
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Tokyo 113-0033, Japan
| | - Masahide Kikkawa
- Department of Cell Biology and Anatomy, Graduate School of Medicine, The University of Tokyo, Tokyo 113-0033, Japan
| | - Han Gao
- State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 211198, P.R. China
| | - Jiangwei Tian
- State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 211198, P.R. China
| | - Rui Shang
- Department of Chemistry, School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Eiichi Nakamura
- Department of Chemistry, School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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8
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Tsuji H, Nakamura E. Synthesis, Property and Application of Rigid Planar Carbon-bridged Oligo(phenylenevinylene)s. J SYN ORG CHEM JPN 2020. [DOI: 10.5059/yukigoseikyokaishi.78.782] [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]
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9
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Bonal V, Morales-Vidal M, Boj PG, Villalvilla JM, Quintana JA, Lin N, Watanabe S, Tsuji H, Nakamura E, Díaz-García MA. Kinetically Protected Carbon-Bridged Oligo( p-phenylenevinylene) Derivatives for Blue Color Amplified Spontaneous Emission. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2020. [DOI: 10.1246/bcsj.20200042] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Víctor Bonal
- Departamento de Física Aplicada and Instituto Universitario de Materiales de Alicante, Universidad de Alicante, Alicante 03080, Spain
| | - Marta Morales-Vidal
- Departamento de Óptica, Farmacología y Anatomía and Instituto Universitario de Materiales de Alicante, Universidad de Alicante, Alicante 03080, Spain
| | - Pedro G. Boj
- Departamento de Óptica, Farmacología y Anatomía and Instituto Universitario de Materiales de Alicante, Universidad de Alicante, Alicante 03080, Spain
| | - José M. Villalvilla
- Departamento de Física Aplicada and Instituto Universitario de Materiales de Alicante, Universidad de Alicante, Alicante 03080, Spain
| | - José A. Quintana
- Departamento de Óptica, Farmacología y Anatomía and Instituto Universitario de Materiales de Alicante, Universidad de Alicante, Alicante 03080, Spain
| | - Naiti Lin
- Department of Chemistry, School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Shoya Watanabe
- Department of Chemistry, Faculty of Science, Kanagawa University, 2946 Tsuchiya, Hiratsuka, Kanagawa 259-1293, Japan
| | - Hayato Tsuji
- Department of Chemistry, Faculty of Science, Kanagawa University, 2946 Tsuchiya, Hiratsuka, Kanagawa 259-1293, Japan
| | - Eiichi Nakamura
- Department of Chemistry, School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - María A. Díaz-García
- Departamento de Física Aplicada and Instituto Universitario de Materiales de Alicante, Universidad de Alicante, Alicante 03080, Spain
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10
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Chen Y, Chen W, Qiao Y, Lu X, Zhou G. BN‐Embedded Polycyclic Aromatic Hydrocarbon Oligomers: Synthesis, Aromaticity, and Reactivity. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202000556] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Yijing Chen
- Lab of Advanced Materials State Key Laboratory of Molecular Engineering of Polymers Fudan University Shanghai 200438 P. R. China
| | - Weinan Chen
- Lab of Advanced Materials State Key Laboratory of Molecular Engineering of Polymers Fudan University Shanghai 200438 P. R. China
| | - Yanjun Qiao
- Department of Materials Science Fudan University Shanghai 200438 P. R. China
| | - Xuefeng Lu
- Department of Materials Science Fudan University Shanghai 200438 P. R. China
| | - Gang Zhou
- Lab of Advanced Materials State Key Laboratory of Molecular Engineering of Polymers Fudan University Shanghai 200438 P. R. China
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Chen Y, Chen W, Qiao Y, Lu X, Zhou G. BN-Embedded Polycyclic Aromatic Hydrocarbon Oligomers: Synthesis, Aromaticity, and Reactivity. Angew Chem Int Ed Engl 2020; 59:7122-7130. [PMID: 32067320 DOI: 10.1002/anie.202000556] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2020] [Indexed: 12/26/2022]
Abstract
BN-embedded oligomers with different pairs of BN units were synthesized by electrophilic borylation. Up to four pairs of BN units were incorporated in the large polycyclic aromatic hydrocarbons (PAHs). Their geometric, photophysical, electrochemical, and Lewis acidic properties were investigated by X-ray crystallography, optical spectroscopy, and cyclic voltammetry. The B-N bonds show delocalized double-bond characteristics and the conjugation can be extended through the trans-orientated aromatic azaborine units. Calculations reveal the relatively lower aromaticity for the inner azaborine rings in the BN-embedded PAH oligomers. The frontier orbitals of the longer oligomers are delocalized over the inner aromatic rings. Consequently, the inner moieties of the BN-embedded PAH oligomers are more active than the outer parts. This is confirmed by a simple oxidation reaction, which has significant effects on the aromaticity and the intramolecular charge-transfer interactions.
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Affiliation(s)
- Yijing Chen
- Lab of Advanced Materials, State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai, 200438, P. R. China
| | - Weinan Chen
- Lab of Advanced Materials, State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai, 200438, P. R. China
| | - Yanjun Qiao
- Department of Materials Science, Fudan University, Shanghai, 200438, P. R. China
| | - Xuefeng Lu
- Department of Materials Science, Fudan University, Shanghai, 200438, P. R. China
| | - Gang Zhou
- Lab of Advanced Materials, State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai, 200438, P. R. China
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12
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Inaoka S, Iwata K, Saha S. Towards the critical understanding of selected vibrational features in biologically important dicyano aromatic conjugated molecules: Importance of electron donating/withdrawal groups and geometry associated with dicyano group. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 224:117419. [PMID: 31369992 DOI: 10.1016/j.saa.2019.117419] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Revised: 07/23/2019] [Accepted: 07/23/2019] [Indexed: 06/10/2023]
Abstract
The Raman spectra of a series of synthesized DC molecules (benzylidene malononitrile derivatives) with different electron donating (EDG) and electron withdrawing (EWG) group have been presented and analyzed with DFT calculated spectra. In particular, different functional groups effect on cyano stretching (∼2200 cm-1), phenyl ring breathing and alkenic double bond stretch which often appears mixed up (1475-1650 cm-1) are studied systematically for several aromatic conjugated DC derivatives. Interestingly, symmetric stretching frequency of the DC compounds having two CN groups at geminal position appears at higher wavenumber (by 11-15 cm-1) compared to their corresponding asymmetric stretch frequency. Angle (between dicyano group) dependent theoretical study indicates that the relative appearance of cyano symmetric/anti-symmetric stretching frequency depends on whether dicyano groups are at the geminal or vicinal position and the angle between them. Complete band assignments of observed Raman frequencies have been performed by potential energy distributions (PEDs) available in GAR2PED software. Our results will help to understand the vibrational feature of this important class of compounds in biological medium when used as probe.
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Affiliation(s)
- Shun Inaoka
- Department of Chemistry, Faculty of Science, Gakushuin University, 1-5-1 Mejiro, Toshima-ku, Japan
| | - Koichi Iwata
- Department of Chemistry, Faculty of Science, Gakushuin University, 1-5-1 Mejiro, Toshima-ku, Japan
| | - Satyen Saha
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi 221005, India.
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13
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Tsuji H, Nakamura E. Carbon-Bridged Oligo(phenylene vinylene)s: A de Novo Designed, Flat, Rigid, and Stable π-Conjugated System. Acc Chem Res 2019; 52:2939-2949. [PMID: 31525023 DOI: 10.1021/acs.accounts.9b00369] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
The modern history of conducting organic systems started with a fortuitous error in 1967 on acetylene polymerization, followed by a rational discovery in 1976 on the effects of doping that generates a polaron and, hence, dramatically increases conductivity. Not unexpectedly, however, the prototypical polyacetylene suffers many problems, including C-C single bond rotation, short effective conjugation length, radiationless deactivation, and instability of the polarons. Several strategies have been put in place to solve these problems. An early approach relied on partial rigidification of the polyene structure by conversion into polymers with thiophene, pyrrole, and benzene linkages. An oligo(phenylene vinylene) (OPV) is an all-carbon analogue of polyacetylene, where every other diene unit in the polyene chain is converted to a benzene unit, still leaving many C-C single bonds freely rotating in the molecule. We considered adding additional carbon bridges to rigidify the OPV skeleton entirely to create a carbon-bridged OPV (COPV). Making such a compound was an obvious challenge. This Account describes the authors' efforts to design and synthesize a series of COPV molecules, where the benzene rings in OPV are bridged by sp3 carbon atoms to form a bicyclo[3.3.0]octatriene framework bearing a tetrasubstituted olefin at the ring fusion. This olefinic bond is so strained that it resists further deformation or conversion to sp3 centers, and hence, it is chemically stable despite the strain. The sp3 carbon bridges can bear organic side chains that hinder intermolecular interactions, rendering the excited states stable and long-lived even in the solid state. They also increase solubility, a common problem among rigid molecular systems. With these structural features, the COPV molecules were found to be well behaved both at a single-molecule level and as a bulk material. We reported in 2009 a method for the synthesis of COPVs and have, since then, reported their structures and physicochemical properties, including basic photophysical properties of neutral and charged derivatives, thermal and photostability, and fast electron transfer. These properties have rendered the COPV molecules useful for electronic and photonic research, for example, lasers, solar cells, and molecular wire applications. Noteworthy discoveries in the area connecting chemistry and physics include inelastic tunneling and long-range resonance tunneling at ambient temperature, which were previously observed only for organic molecular wires placed under cryogenic conditions. Given the ready availability of the COPV skeleton bearing a wide variety of substituents, this class of molecules will serve as versatile building blocks for fundamental and applied research on physicochemical and materials chemistry.
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Affiliation(s)
- Hayato Tsuji
- Department of Chemistry, Faculty of Science, Kanagawa University, 2946 Tsuchiya, Hiratsuka 259-1293, Japan
| | - Eiichi Nakamura
- Department of Chemistry, School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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14
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Rotthowe N, Zwicker J, Winter RF. Influence of Quinoidal Distortion on the Electronic Properties of Oxidized Divinylarylene-Bridged Diruthenium Complexes. Organometallics 2019. [DOI: 10.1021/acs.organomet.9b00318] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Nils Rotthowe
- Fachbereich Chemie, Universität Konstanz, Universitätsstraße 10, D-78453 Konstanz, Germany
| | - Jakob Zwicker
- Fachbereich Chemie, Universität Konstanz, Universitätsstraße 10, D-78453 Konstanz, Germany
| | - Rainer F. Winter
- Fachbereich Chemie, Universität Konstanz, Universitätsstraße 10, D-78453 Konstanz, Germany
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15
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Sandoval-Salinas ME, Carreras A, Casado J, Casanova D. Singlet fission in spiroconjugated dimers. J Chem Phys 2019; 150:204306. [DOI: 10.1063/1.5097048] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Affiliation(s)
- María E. Sandoval-Salinas
- Departament de Ciència de Materials i Química Física and Institut de Química Teòrica i Computacional (IQTCUB), Universitat de Barcelona, Martí i Franquès 1-11, Barcelona, 08028 Catalunya, Spain
- Donostia International Physics Center (DIPC), Manuel Lardizabal Pasealekua 4, Donostia, Euskadi 20018, Spain
| | - Abel Carreras
- Donostia International Physics Center (DIPC), Manuel Lardizabal Pasealekua 4, Donostia, Euskadi 20018, Spain
| | - Juan Casado
- Department of Physical Chemistry, University of Málaga, Andalucia-Tech, Campus de Teatinos s/n, 29071 Málaga, Spain
| | - David Casanova
- Donostia International Physics Center (DIPC), Manuel Lardizabal Pasealekua 4, Donostia, Euskadi 20018, Spain
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16
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Tsuji H, Ichimura A, Kudo M, Sukegawa J, Nakamura E. Carbon-bridged Oligo(phenylenevinylene)s as Light-harvesting Antenna for Porphyrins. Chem Asian J 2019; 14:1672-1675. [PMID: 30656848 DOI: 10.1002/asia.201801715] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2018] [Revised: 01/09/2019] [Indexed: 11/10/2022]
Abstract
The efficacy of carbon-bridged oligo(phenylenevinylenes)s (COPVs) as light-harvesting antenna for porphyrins is demonstrated using a series of 5,15-di-COPVn-substituted free-base and zinc porphyrins, COPVn-MP-COPVn (n=1-3, M=H2 , Zn). These molecules were synthesized by Suzuki-Miyaura cross-coupling reactions of COPVn-Bpin and Br-H2 P-Br. The absorption spectra of these compounds in solution show a significant expansion of the Soret band region together with a bathochromic shift of the Q band, suggesting a significant interaction between these chromophores in the ground state. The photoluminescence quantum yield of the porphyrin-COPV conjugates is enhanced up to four times relative to the parent porphyrins. Theoretical calculations also indicated interactions between these chromophores in the HOMO, which suggests that the light-harvesting ability stems from the expansion of the π-electron-conjugation system.
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Affiliation(s)
- Hayato Tsuji
- Department of Chemistry, Faculty of Science, Kanagawa University, 2946 Tsuchiya, Hiratsuka, 259-1293, Japan.,Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Anna Ichimura
- Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Mizuki Kudo
- Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Junpei Sukegawa
- Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Eiichi Nakamura
- Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
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17
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Ito M, Mera A, Mashimo T, Seki T, Karanjit S, Ohashi E, Nakayama A, Kitamura K, Hamura T, Ito H, Namba K. Synthesis and Evaluation of a 1,3a,6a-Triazapentalene (TAP)-Bonded System. Chemistry 2018; 24:17727-17733. [PMID: 30298702 DOI: 10.1002/chem.201804733] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Revised: 10/04/2018] [Indexed: 01/16/2023]
Abstract
A method of synthesizing a directly connected 1,3a,6a-triazapentalene (TAP) ring system as a linearly bonded aromatic system with a planar form was established. Various TAP-dimers and a 2-alkyl-TAP-trimer were synthesized and their fluorescence properties were evaluated. Although the direct connection of the TAP ring with other TAP rings did not affect the fluorescence properties in diluted solvent, TAP-dimers showed unique fluorescence properties derived from the aggregation state under highly concentrated conditions. In particular, TAP-dimer 5 f showed aggregation-induced emission in highly concentrated solution, and 5 b showed typical mechanochromic fluorescence in the solid state despite their compact molecular size.
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Affiliation(s)
- Masami Ito
- Department of Pharmaceutical Science, Tokushima University, 1-78-1 Shomachi, Tokushima, 770-8505, Japan
| | - Akane Mera
- Department of Pharmaceutical Science, Tokushima University, 1-78-1 Shomachi, Tokushima, 770-8505, Japan
| | - Takaki Mashimo
- Division of Applied Chemistry & Frontier Chemistry Center, Faculty of Engineering, Hokkaido University, Sapporo, Hokkaido, 060-8628, Japan
| | - Tomohiro Seki
- Division of Applied Chemistry & Frontier Chemistry Center, Faculty of Engineering, Hokkaido University, Sapporo, Hokkaido, 060-8628, Japan
| | - Sangita Karanjit
- Department of Pharmaceutical Science, Tokushima University, 1-78-1 Shomachi, Tokushima, 770-8505, Japan
| | - Eisaku Ohashi
- Department of Pharmaceutical Science, Tokushima University, 1-78-1 Shomachi, Tokushima, 770-8505, Japan
| | - Atsushi Nakayama
- Department of Pharmaceutical Science, Tokushima University, 1-78-1 Shomachi, Tokushima, 770-8505, Japan
| | - Kei Kitamura
- Department of Applied Chemistry for Environment, School of Science and Technology, Kwansei Gakuin University, 2-1 Gakuen, Sanda, Hyogo, 669-1337, Japan
| | - Toshiyuki Hamura
- Department of Applied Chemistry for Environment, School of Science and Technology, Kwansei Gakuin University, 2-1 Gakuen, Sanda, Hyogo, 669-1337, Japan
| | - Hajime Ito
- Division of Applied Chemistry & Frontier Chemistry Center, Faculty of Engineering, Hokkaido University, Sapporo, Hokkaido, 060-8628, Japan
| | - Kosuke Namba
- Department of Pharmaceutical Science, Tokushima University, 1-78-1 Shomachi, Tokushima, 770-8505, Japan
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18
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Katsoukis G, Frei H. Heterobinuclear Light Absorber Coupled to Molecular Wire for Charge Transport across Ultrathin Silica Membrane for Artificial Photosynthesis. ACS APPLIED MATERIALS & INTERFACES 2018; 10:31422-31432. [PMID: 30146876 DOI: 10.1021/acsami.8b11684] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Coupling of robust, all-inorganic heterobinuclear light absorbers to metal oxide catalysts for water oxidation across an ultrathin product-separating silica membrane requires charge transfer through organic molecular wires embedded in the silica. A synthetic approach for assembling the bimetallic units on the silica surface is introduced that is compatible with the presence of encapsulated organic molecules. Accurate selection and fine tuning of the concentration of embedded conducting wires are enabled by a two-step method consisting of surface attachment of a tripodal anchor, trimethoxysilyl aniline, followed by attachment of p-oligo(phenylene vinylene) through amide linkage. Each step of the assembly process was monitored and characterized by a combination of Fourier transform infrared, Fourier transform-Raman, and UV-vis spectroscopy techniques. Hole transfer was observed from transient CoIII, formed by TiIVOCoII → TiIIIOCoIII charge transfer excitation of the chromophore, to p-oligo(phenylene vinylene) molecule within the 8 ns width of the photolysis laser pulse by transient optical absorption spectroscopy of the wire radical cation. The rectifying property of the light absorber-wire assembly enabled by appropriate selection of redox potentials of metals and embedded wire obviates the need for a molecularly defined linkage between the components. Combined with the previously observed ultrafast hole injection from the embedded wires to Co oxide catalyst, the result implies visible-light-induced hole transfer from visible-light-excited binuclear light absorber to water oxidation catalyst across the silica separation membrane in a few nanoseconds or faster. Demonstration and understanding of this interfacial charge-transfer step is critical for developing nanoscale core-shell architectures for complete photosynthetic cycles.
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Affiliation(s)
- Georgios Katsoukis
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory , University of California , Berkeley , California 94720 , United States
| | - Heinz Frei
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory , University of California , Berkeley , California 94720 , United States
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19
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Medina Rivero S, Mayorga Burrezo P, Sandoval-Salinas ME, Li T, Ramírez FJ, Casanova D, Wang X, Casado J. Isomerism, Diradical Signature, and Raman Spectroscopy: Underlying Connections in Diamino Oligophenyl Dications. Chemphyschem 2018; 19:1465-1470. [PMID: 29570949 DOI: 10.1002/cphc.201800085] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2018] [Indexed: 11/06/2022]
Abstract
A diradical dication of a 4,4'-di(bis(1,4-methylphenyl)amino)-p-terphenyl oligomer has been characterized in solid-state by Raman spectroscopy and thermo-spectroscopy together with quantum chemical calculations. The diradical character has been evaluated on the basis of the Raman spectra and as a function of temperature. A complete understanding of the nature of the changes in solid state has been provided based on a pseudo-Jahn-Teller effect, which is feasible owing to the fine balance between quinoidal/aromatic extension among consecutive rings and steric crowding. This study contributes to the further comprehension of the molecular and electronic structures of these particular diradical molecules with strong implications on the understanding of the nature of chemical bonds in the limits of high electronic correlation or π-conjugation.
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Affiliation(s)
- Samara Medina Rivero
- Department of Physical Chemistry, University of Málaga, Campus de Teatinos s/n, Málaga, 29071, Spain
| | - Paula Mayorga Burrezo
- Department of Physical Chemistry, University of Málaga, Campus de Teatinos s/n, Málaga, 29071, Spain
| | - María Eugenia Sandoval-Salinas
- 2IKERBASQUE - Basque Foundation for Science (DC) & Donostia, International Physics Center & Kimika Fakultatea Euskal Herriko Unibertsitatea (UPV/EHU), Paseo Manuel de Lardizabal, 4, 20018, Donostia-San Sebastián, Euskadi, Spain.,Departament de Ciència de Materials i Química Física, Institut de Química Teòrica i Computacional (IQTCUB), Universitat de Barcelona, Martí i Franquès 1-11, Barcelona, 08028, Spain
| | - Tao Li
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, China
| | - Francisco J Ramírez
- Department of Physical Chemistry, University of Málaga, Campus de Teatinos s/n, Málaga, 29071, Spain
| | - David Casanova
- 2IKERBASQUE - Basque Foundation for Science (DC) & Donostia, International Physics Center & Kimika Fakultatea Euskal Herriko Unibertsitatea (UPV/EHU), Paseo Manuel de Lardizabal, 4, 20018, Donostia-San Sebastián, Euskadi, Spain
| | - Xinping Wang
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, China
| | - Juan Casado
- Department of Physical Chemistry, University of Málaga, Campus de Teatinos s/n, Málaga, 29071, Spain
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20
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Ouyang C, Hashimoto K, Tsuji H, Nakamura E, Majima Y. Coherent Resonant Electron Tunneling at 9 and 300 K through a 4.5 nm Long, Rigid, Planar Organic Molecular Wire. ACS OMEGA 2018; 3:5125-5130. [PMID: 31458728 PMCID: PMC6641898 DOI: 10.1021/acsomega.8b00559] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/24/2018] [Accepted: 04/27/2018] [Indexed: 06/10/2023]
Abstract
Organic molecular wires that operate stably at ambient temperatures are a necessary first step toward practical and useful molecular-scale electronic devices, which have thus far been hampered by many factors, including the structural and electron configurational instability of organic molecules. We report here that a single disulfanyl carbon-bridged oligo(phenylenevinylene) (COPV6) molecule embedded between thermally stable electroless Au-plated electrodes of a 4 nm nanogap undergoes coherent resonant tunneling at both 9 and 300 K and functions even after storage in air at room temperature. Such enormous stability is ascribed to the unique structural characteristics of COPV6, that is, rigidity, planarity, thermal stability, resistivity against oxidation and reduction, and an organic insulating sheath that protects the π-system. When sandwiched between the gaps without pinning, this molecule behaves as a Coulomb island with sequential single-electron tunneling at 9 K that disappears at 300 K while maintaining a stable electron flow.
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Affiliation(s)
- Chun Ouyang
- Laboratory
for Materials and Structures, Tokyo Institute
of Technology, Yokohama 226-8503, Japan
- Surface
and Interface Science Laboratory, RIKEN, Saitama 351-0198, Japan
| | - Kohei Hashimoto
- Department
of Chemistry, School of Science, University
of Tokyo, Tokyo 113-0033, Japan
| | - Hayato Tsuji
- Department
of Chemistry, School of Science, University
of Tokyo, Tokyo 113-0033, Japan
- Department
of Chemistry, Faculty of Science, Kanagawa
University, Hiratsuka 259-1293, Japan
| | - Eiichi Nakamura
- Department
of Chemistry, School of Science, University
of Tokyo, Tokyo 113-0033, Japan
| | - Yutaka Majima
- Laboratory
for Materials and Structures, Tokyo Institute
of Technology, Yokohama 226-8503, Japan
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21
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Wang Y, Guo H, Harbuzaru A, Uddin MA, Arrechea-Marcos I, Ling S, Yu J, Tang Y, Sun H, López Navarrete JT, Ortiz RP, Woo HY, Guo X. (Semi)ladder-Type Bithiophene Imide-Based All-Acceptor Semiconductors: Synthesis, Structure–Property Correlations, and Unipolar n-Type Transistor Performance. J Am Chem Soc 2018; 140:6095-6108. [DOI: 10.1021/jacs.8b02144] [Citation(s) in RCA: 135] [Impact Index Per Article: 22.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Yingfeng Wang
- Department of Materials Science and Engineering and The Shenzhen Key Laboratory for Printed Organic Electronics, South University of Science and Technology of China, No. 1088, Xueyuan Road, Shenzhen, Guangdong 518055, China
| | - Han Guo
- Department of Materials Science and Engineering and The Shenzhen Key Laboratory for Printed Organic Electronics, South University of Science and Technology of China, No. 1088, Xueyuan Road, Shenzhen, Guangdong 518055, China
| | - Alexandra Harbuzaru
- Department of Physical Chemistry, University of Málaga, Campus de Teatinos s/n, Málaga 29071, Spain
| | - Mohammad Afsar Uddin
- Research Institute for Natural Sciences, Department of Chemistry, Korea University, Seoul 02841, South Korea
| | - Iratxe Arrechea-Marcos
- Department of Physical Chemistry, University of Málaga, Campus de Teatinos s/n, Málaga 29071, Spain
| | - Shaohua Ling
- Department of Materials Science and Engineering and The Shenzhen Key Laboratory for Printed Organic Electronics, South University of Science and Technology of China, No. 1088, Xueyuan Road, Shenzhen, Guangdong 518055, China
| | - Jianwei Yu
- Department of Materials Science and Engineering and The Shenzhen Key Laboratory for Printed Organic Electronics, South University of Science and Technology of China, No. 1088, Xueyuan Road, Shenzhen, Guangdong 518055, China
| | - Yumin Tang
- Department of Materials Science and Engineering and The Shenzhen Key Laboratory for Printed Organic Electronics, South University of Science and Technology of China, No. 1088, Xueyuan Road, Shenzhen, Guangdong 518055, China
| | - Huiliang Sun
- Department of Materials Science and Engineering and The Shenzhen Key Laboratory for Printed Organic Electronics, South University of Science and Technology of China, No. 1088, Xueyuan Road, Shenzhen, Guangdong 518055, China
| | | | - Rocio Ponce Ortiz
- Department of Physical Chemistry, University of Málaga, Campus de Teatinos s/n, Málaga 29071, Spain
| | - Han Young Woo
- Research Institute for Natural Sciences, Department of Chemistry, Korea University, Seoul 02841, South Korea
| | - Xugang Guo
- Department of Materials Science and Engineering and The Shenzhen Key Laboratory for Printed Organic Electronics, South University of Science and Technology of China, No. 1088, Xueyuan Road, Shenzhen, Guangdong 518055, China
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22
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Nishioka H, Tsuji H, Nakamura E. Homo- and Copolymers Based on Carbon-Bridged Oligo(p-phenylenevinylene)s for Efficient Fluorescence over the Entire Visible Region. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b00102] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Hiroki Nishioka
- Department of Chemistry, The University of Tokyo, 7-3-1 Bunkyo-ku, Tokyo 113-0033, Japan
| | - Hayato Tsuji
- Department of Chemistry, The University of Tokyo, 7-3-1 Bunkyo-ku, Tokyo 113-0033, Japan
- Department of Chemistry, Faculty of Science, Kanagawa University, 2946 Tsuchiya, Hiratsuka, Kanagawa 259-1293, Japan
| | - Eiichi Nakamura
- Department of Chemistry, The University of Tokyo, 7-3-1 Bunkyo-ku, Tokyo 113-0033, Japan
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23
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Mayorga Burrezo P, Franco C, Caballero R, Mas-Torrent M, Langa F, López Navarrete JT, Rovira C, Veciana J, Casado J. Oligothienylenevinylene Polarons and Bipolarons Confined between Electron-Accepting Perchlorotriphenylmethyl Radicals. Chemistry 2018; 24:3776-3783. [PMID: 29239499 DOI: 10.1002/chem.201705080] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2017] [Indexed: 11/08/2022]
Abstract
A detailed analysis is undertaken of positively charged species generated on a series of thienylenevinylene (nTV) wires terminally substituted with two perchlorotriphenylmethyl (. PTM) radical acceptor groups, . PTM-nTV-PTM. (n=2-7). Motivated by the counterintuitive key role played by holes in the nTV bridges on the operating mechanism of electron transfer in their radical anion mixed-valence derivatives, a wide combination of experimental and theoretical techniques is used, with the aim of gaining further insights into their structural location. Consequently, contributions of the . PTM units for the stabilization of the radical cations and hole localization, particularly in the case of the shortest molecular wire, are probed. In this sense, the formation of quinoidal ring segments, resulting from the coupling of the unpaired electron of the . PTM radical site with those generated along the nTV chains is found. Additionally, open-shell dications, described by the recovery of the central aromaticity and two terminal quinoidal segments, assisted by the . PTM units, are detected.
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Affiliation(s)
- Paula Mayorga Burrezo
- Department of Molecular Nanoscience and Organic Materials, Institut de Ciència de Materials de Barcelona (ICMAB-CSIC)/CIBER-BBN, Campus Universitari de Bellaterra, 08193, Cerdanyola, Barcelona, Spain.,Department of Physical Chemistry, University of Malaga, Campus de Teatinos s/n, 29071, Malaga, Spain
| | - Carlos Franco
- Department of Molecular Nanoscience and Organic Materials, Institut de Ciència de Materials de Barcelona (ICMAB-CSIC)/CIBER-BBN, Campus Universitari de Bellaterra, 08193, Cerdanyola, Barcelona, Spain.,Current affiliation: ETH Zürich, Vladimir-Prelog-Weg 1-5/10, 8093, Zürich, Switzerland
| | - Rubén Caballero
- Universidad de Castilla-La Mancha, Institute of Nanoscience, Nanotechnology and Molecular Materials (INAMOL), Campus de la Fábrica de Armas, Toledo, Spain
| | - Marta Mas-Torrent
- Department of Molecular Nanoscience and Organic Materials, Institut de Ciència de Materials de Barcelona (ICMAB-CSIC)/CIBER-BBN, Campus Universitari de Bellaterra, 08193, Cerdanyola, Barcelona, Spain
| | - Fernando Langa
- Universidad de Castilla-La Mancha, Institute of Nanoscience, Nanotechnology and Molecular Materials (INAMOL), Campus de la Fábrica de Armas, Toledo, Spain
| | - Juan T López Navarrete
- Department of Physical Chemistry, University of Malaga, Campus de Teatinos s/n, 29071, Malaga, Spain
| | - Concepció Rovira
- Department of Molecular Nanoscience and Organic Materials, Institut de Ciència de Materials de Barcelona (ICMAB-CSIC)/CIBER-BBN, Campus Universitari de Bellaterra, 08193, Cerdanyola, Barcelona, Spain
| | - Jaume Veciana
- Department of Molecular Nanoscience and Organic Materials, Institut de Ciència de Materials de Barcelona (ICMAB-CSIC)/CIBER-BBN, Campus Universitari de Bellaterra, 08193, Cerdanyola, Barcelona, Spain
| | - Juan Casado
- Department of Physical Chemistry, University of Malaga, Campus de Teatinos s/n, 29071, Malaga, Spain
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24
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Casado J. Para-Quinodimethanes: A Unified Review of the Quinoidal-Versus-Aromatic Competition and its Implications. Top Curr Chem (Cham) 2017; 375:73. [PMID: 28762218 DOI: 10.1007/s41061-017-0163-2] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2017] [Accepted: 07/17/2017] [Indexed: 10/19/2022]
Abstract
In this article, some quinoidal p-quinodimethanes compounds that convert partially or completely to diradicals or biradicaloids are analyzed. The aromatic/quinoidal balance is revisited with the objective of providing a common interpretation for most of them. For that purpose, important structural and energetic parameters such as the bond length alternation pattern and the singlet-triplet gaps are analyzed and interpreted in the framework of double spin polarization and π-conjugation. p-Quinodimethanes based in oligothiophenes, polycyclic aromatic hydrocarbons, oligophenylenes, thienothiophenes, charged dications and cyclic conjugated molecules are discussed. There are excellent reviews in the field of singlet diradicals; however, a revision similar to that proposed here can help the reader to have another perspective on these promising new functional materials. The focus has been put on molecules which are well known by the author and another of relevance in the field. In this regard, the article finishes with a discussion of some important applications of these diradicals in organic electronics. New chemical systems based on the p-quinodimethane building blocks are waiting us around the corner, bringing us new and challenging structures and fascinating novel properties, which describe a very rich field of research in chemistry and in physics with an excellent present and a bright future.
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Affiliation(s)
- Juan Casado
- Department of Physical Chemistry, Faculty of Science, University of Málaga, Campus de Teatinos s/n, 29071, Málaga, Spain.
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25
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Juan Casado. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/anie.201700624] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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26
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Juan Casado. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201700624] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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27
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Qi Q, Burrezo PM, Phan H, Herng TS, Gopalakrishna TY, Zeng W, Ding J, Casado J, Wu J. Ambient Stable Radical Cations, Diradicaloid π-Dimeric Dications, Closed-Shell Dications, and Diradical Dications of Methylthio-Capped Rylenes. Chemistry 2017; 23:7595-7606. [DOI: 10.1002/chem.201701102] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2017] [Indexed: 11/11/2022]
Affiliation(s)
- Qingbiao Qi
- Department of Chemistry; National University of Singapore; 3 Science Drive 3 117543 Singapore
| | - Paula Mayorga Burrezo
- Department of Physical Chemistry; University of Malaga, Campus de Teatinos s/n; 229071 Malaga Spain
| | - Hoa Phan
- Department of Chemistry; National University of Singapore; 3 Science Drive 3 117543 Singapore
| | - Tun Seng Herng
- Department of Materials Science and Engineering; National University of Singapore; 119260 Singapore
| | | | - Wangdong Zeng
- Department of Chemistry; National University of Singapore; 3 Science Drive 3 117543 Singapore
| | - Jun Ding
- Department of Materials Science and Engineering; National University of Singapore; 119260 Singapore
| | - Juan Casado
- Department of Physical Chemistry; University of Malaga, Campus de Teatinos s/n; 229071 Malaga Spain
| | - Jishan Wu
- Department of Chemistry; National University of Singapore; 3 Science Drive 3 117543 Singapore
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28
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Lee CH, Lai YY, Hsu JY, Huang PK, Cheng YJ. Side-chain modulation of dithienofluorene-based copolymers to achieve high field-effect mobilities. Chem Sci 2017; 8:2942-2951. [PMID: 28451360 PMCID: PMC5376713 DOI: 10.1039/c6sc04129a] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2016] [Accepted: 01/20/2017] [Indexed: 11/21/2022] Open
Abstract
A ladder-type dithieno[3,2-b:6,7-b']fluorene (DTF), where the central fluorene is fused with two outer thiophene rings at its 2,3- and 6,7-junctions, is developed. The pentacyclic DTF monomers were polymerized with dithienodiketopyrrolopyrrole (DPP) acceptors to afford three alternating donor-acceptor copolymers PDTFDPP16, PDTFDPP20, and PDTFDPP32 incorporating different aliphatic side chains (R1 group at DTF; R2 group at the DPP moieties). The side-chain variations in the polymers play a significant role in determining not only the intrinsic molecular properties but also the intermolecular packing. As evidenced by the 2-dimensional GIXS measurements, PDTFDPP16 with octyl (R1) and 2-ethylhexyl (R2) side chains tends to align in an edge-on π-stacking orientation, whereas PDTFDPP20 using 2-butyloctyl (R1) and 2-ethylhexyl (R2) adopts a predominately face-on orientation. PDTFDPP32 with the bulkiest 2-butyloctyl (R1) and 2-octyldodecyl (R2) side chains shows a less ordered amorphous character. The OFET device using PDTFDPP20 with a face-on orientation determined by GIXS measurements achieved a high hole-mobility of up to 5 cm2 V-1 s-1. The high rigidity and coplanarity of the DTF motifs play an important role in facilitating intramolecular 1-dimensional charge transport within the polymer backbones. The implementation of main-chain coplanarity and side-chain engineering strategies in this research provides in-depth insights into structure-property relationships for guiding development of high-mobility OFET polymers.
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Affiliation(s)
- Chia-Hao Lee
- Department of Applied Chemistry , National Chiao Tung University , 1001 University Road , Hsin-Chu , Taiwan .
| | - Yu-Ying Lai
- Institute of Polymer Science and Engineering , National Taiwan University , Taipei , 10617 , Taiwan
| | - Jhih-Yang Hsu
- Department of Applied Chemistry , National Chiao Tung University , 1001 University Road , Hsin-Chu , Taiwan .
| | - Po-Kai Huang
- Department of Applied Chemistry , National Chiao Tung University , 1001 University Road , Hsin-Chu , Taiwan .
| | - Yen-Ju Cheng
- Department of Applied Chemistry , National Chiao Tung University , 1001 University Road , Hsin-Chu , Taiwan .
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29
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Zafra JL, Molina Ontoria A, Mayorga Burrezo P, Peña-Alvarez M, Samoc M, Szeremeta J, Ramírez FJ, Lovander MD, Droske CJ, Pappenfus TM, Echegoyen L, López Navarrete JT, Martín N, Casado J. Fingerprints of Through-Bond and Through-Space Exciton and Charge π-Electron Delocalization in Linearly Extended [2.2]Paracyclophanes. J Am Chem Soc 2017; 139:3095-3105. [DOI: 10.1021/jacs.6b12520] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- José L. Zafra
- Department
of Physical Chemistry, University of Málaga, Campus de Teatinos s/n, Málaga 29071, Spain
| | - Agustín Molina Ontoria
- IMDEA-Nanociencia,
C/Faraday 9, Ciudad Universitaria de Cantoblanco, 28049 Madrid, Spain
| | - Paula Mayorga Burrezo
- Department
of Physical Chemistry, University of Málaga, Campus de Teatinos s/n, Málaga 29071, Spain
| | | | - Marek Samoc
- Advanced
Materials Engineering and Modelling Group, Faculty of Chemistry, Wroclaw University of Science and Technology, 50370 Wroclaw, Poland
| | - Janusz Szeremeta
- Advanced
Materials Engineering and Modelling Group, Faculty of Chemistry, Wroclaw University of Science and Technology, 50370 Wroclaw, Poland
| | - Francisco J. Ramírez
- Department
of Physical Chemistry, University of Málaga, Campus de Teatinos s/n, Málaga 29071, Spain
| | - Matthew D. Lovander
- Division
of Science and Mathematics, University of Minnesota, Morris, Minnesota 56267, United States
| | - Christopher J. Droske
- Division
of Science and Mathematics, University of Minnesota, Morris, Minnesota 56267, United States
| | - Ted M. Pappenfus
- Division
of Science and Mathematics, University of Minnesota, Morris, Minnesota 56267, United States
| | - Luis Echegoyen
- Department
of Chemistry, University of Texas at El Paso, El Paso, Texas 79968, United States
| | - Juan T. López Navarrete
- Department
of Physical Chemistry, University of Málaga, Campus de Teatinos s/n, Málaga 29071, Spain
| | - Nazario Martín
- IMDEA-Nanociencia,
C/Faraday 9, Ciudad Universitaria de Cantoblanco, 28049 Madrid, Spain
| | - Juan Casado
- Department
of Physical Chemistry, University of Málaga, Campus de Teatinos s/n, Málaga 29071, Spain
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30
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Burrezo PM, Zafra JL, Navarrete JTL, Casado J. Chinoide/Aromatische Umwandlungen in π-konjugierten Oligomeren: Raman-Schwingungsspektroskopie an der Grenze zum π-Bindungsbruch. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201605893] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Paula Mayorga Burrezo
- Department of Physical Chemistry; University of Málaga, Andalucia-Tech; Campus de Teatinos s/n 29071 Málaga Spanien
| | - José L. Zafra
- Department of Physical Chemistry; University of Málaga, Andalucia-Tech; Campus de Teatinos s/n 29071 Málaga Spanien
| | - Juan T. López Navarrete
- Department of Physical Chemistry; University of Málaga, Andalucia-Tech; Campus de Teatinos s/n 29071 Málaga Spanien
| | - Juan Casado
- Department of Physical Chemistry; University of Málaga, Andalucia-Tech; Campus de Teatinos s/n 29071 Málaga Spanien
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31
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Burrezo PM, Zafra JL, López Navarrete JT, Casado J. Quinoidal/Aromatic Transformations in π-Conjugated Oligomers: Vibrational Raman studies on the Limits of Rupture for π-Bonds. Angew Chem Int Ed Engl 2017; 56:2250-2259. [DOI: 10.1002/anie.201605893] [Citation(s) in RCA: 74] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2016] [Revised: 11/07/2016] [Indexed: 11/08/2022]
Affiliation(s)
- Paula Mayorga Burrezo
- Department of Physical Chemistry; University of Málaga, Andalucia-Tech; Campus de Teatinos s/n 29071 Málaga Spain
| | - José L. Zafra
- Department of Physical Chemistry; University of Málaga, Andalucia-Tech; Campus de Teatinos s/n 29071 Málaga Spain
| | - Juan T. López Navarrete
- Department of Physical Chemistry; University of Málaga, Andalucia-Tech; Campus de Teatinos s/n 29071 Málaga Spain
| | - Juan Casado
- Department of Physical Chemistry; University of Málaga, Andalucia-Tech; Campus de Teatinos s/n 29071 Málaga Spain
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32
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Burrezo PM, Lin NT, Nakabayashi K, Ohkoshi SI, Calzado EM, Boj PG, Díaz García MA, Franco C, Rovira C, Veciana J, Moos M, Lambert C, López Navarrete JT, Tsuji H, Nakamura E, Casado J. Bis(aminoaryl) Carbon-Bridged Oligo(phenylenevinylene)s Expand the Limits of Electronic Couplings. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201610921] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
| | - Nai-Ti Lin
- Department of Chemistry; School of Science; The University of Tokyo; 7-3-1 Hongo, Bunkyo-ku Tokyo 113-0033 Japan
| | - Koji Nakabayashi
- Department of Chemistry; School of Science; The University of Tokyo; 7-3-1 Hongo, Bunkyo-ku Tokyo 113-0033 Japan
| | - Shin-ichi Ohkoshi
- Department of Chemistry; School of Science; The University of Tokyo; 7-3-1 Hongo, Bunkyo-ku Tokyo 113-0033 Japan
| | - Eva M. Calzado
- Dpto. Física, Ingeniería de Sistemas y Teoría de la Señal; Dpto. Óptica and Dpto de Física Aplicada and Instituto Universitario de Materiales de Alicante; Universidad de Alicante; Alicante 03080 Spain
| | - Pedro G. Boj
- Dpto. Física, Ingeniería de Sistemas y Teoría de la Señal; Dpto. Óptica and Dpto de Física Aplicada and Instituto Universitario de Materiales de Alicante; Universidad de Alicante; Alicante 03080 Spain
| | - María A. Díaz García
- Dpto. Física, Ingeniería de Sistemas y Teoría de la Señal; Dpto. Óptica and Dpto de Física Aplicada and Instituto Universitario de Materiales de Alicante; Universidad de Alicante; Alicante 03080 Spain
| | - Carlos Franco
- Department of Molecular Nanoscience and Organic Materials; Institut de Ciència de Materials de Barcelona (ICMAB-CSIC) and Networking Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN); Campus de la UAB Bellaterra 08193 Spain
| | - Concepciò Rovira
- Department of Molecular Nanoscience and Organic Materials; Institut de Ciència de Materials de Barcelona (ICMAB-CSIC) and Networking Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN); Campus de la UAB Bellaterra 08193 Spain
| | - Jaume Veciana
- Department of Molecular Nanoscience and Organic Materials; Institut de Ciència de Materials de Barcelona (ICMAB-CSIC) and Networking Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN); Campus de la UAB Bellaterra 08193 Spain
| | - Michael Moos
- Institut für Organische Chemie; Universität Würzburg; Am Hubland 97074 Würzburg Germany
| | - Christoph Lambert
- Institut für Organische Chemie; Universität Würzburg; Am Hubland 97074 Würzburg Germany
| | | | - Hayato Tsuji
- Department of Chemistry; School of Science; The University of Tokyo; 7-3-1 Hongo, Bunkyo-ku Tokyo 113-0033 Japan
- Present address: Department of Chemistry; Faculty of Science; Kanagawa University; Kanagawa 259-1293 Japan
| | - Eiichi Nakamura
- Department of Chemistry; School of Science; The University of Tokyo; 7-3-1 Hongo, Bunkyo-ku Tokyo 113-0033 Japan
| | - Juan Casado
- Department of Physical Chemistry; University of Málaga; 29071 Málaga Spain
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33
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Burrezo PM, Lin NT, Nakabayashi K, Ohkoshi SI, Calzado EM, Boj PG, Díaz García MA, Franco C, Rovira C, Veciana J, Moos M, Lambert C, López Navarrete JT, Tsuji H, Nakamura E, Casado J. Bis(aminoaryl) Carbon-Bridged Oligo(phenylenevinylene)s Expand the Limits of Electronic Couplings. Angew Chem Int Ed Engl 2017; 56:2898-2902. [PMID: 28140501 DOI: 10.1002/anie.201610921] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Indexed: 11/10/2022]
Abstract
Carbon-bridged bis(aminoaryl) oligo(para-phenylenevinylene)s have been prepared and their optical, electrochemical, and structural properties analyzed. Their radical cations are class III and class II mixed-valence systems, depending on the molecular size, and they show electronic couplings which are among the largest for the self-exchange reaction of purely organic molecules. In their dication states, the antiferromagnetic coupling is progressively tuned with size from quinoidal closed-shell to open-shell biradicals. The data prove that the electronic coupling in the radical cations and the singlet-triplet gap in the dications show similar small attenuation factors, thus allowing charge/spin transfer over rather large distances.
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Affiliation(s)
| | - Nai-Ti Lin
- Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Koji Nakabayashi
- Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Shin-Ichi Ohkoshi
- Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Eva M Calzado
- Dpto. Física, Ingeniería de Sistemas y Teoría de la Señal, Dpto. Óptica and Dpto de Física Aplicada and Instituto Universitario de Materiales de Alicante, Universidad de Alicante, Alicante, 03080, Spain
| | - Pedro G Boj
- Dpto. Física, Ingeniería de Sistemas y Teoría de la Señal, Dpto. Óptica and Dpto de Física Aplicada and Instituto Universitario de Materiales de Alicante, Universidad de Alicante, Alicante, 03080, Spain
| | - María A Díaz García
- Dpto. Física, Ingeniería de Sistemas y Teoría de la Señal, Dpto. Óptica and Dpto de Física Aplicada and Instituto Universitario de Materiales de Alicante, Universidad de Alicante, Alicante, 03080, Spain
| | - Carlos Franco
- Department of Molecular Nanoscience and Organic Materials, Institut de Ciència de Materials de Barcelona (ICMAB-CSIC) and Networking Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Campus de la UAB, Bellaterra, 08193, Spain
| | - Concepciò Rovira
- Department of Molecular Nanoscience and Organic Materials, Institut de Ciència de Materials de Barcelona (ICMAB-CSIC) and Networking Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Campus de la UAB, Bellaterra, 08193, Spain
| | - Jaume Veciana
- Department of Molecular Nanoscience and Organic Materials, Institut de Ciència de Materials de Barcelona (ICMAB-CSIC) and Networking Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Campus de la UAB, Bellaterra, 08193, Spain
| | - Michael Moos
- Institut für Organische Chemie, Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Christoph Lambert
- Institut für Organische Chemie, Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | | | - Hayato Tsuji
- Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan.,Present address: Department of Chemistry, Faculty of Science, Kanagawa University, Kanagawa, 259-1293, Japan
| | - Eiichi Nakamura
- Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Juan Casado
- Department of Physical Chemistry, University of Málaga, 29071, Málaga, Spain
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34
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Murayama K, Shibata Y, Sugiyama H, Uekusa H, Tanaka K. Synthesis, Structure, and Photophysical/Chiroptical Properties of Benzopicene-Based π-Conjugated Molecules. J Org Chem 2017; 82:1136-1144. [PMID: 28035821 DOI: 10.1021/acs.joc.6b02757] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The convenient synthesis of substituted benzopicenes and azabenzopicenes has been achieved by the cationic rhodium(I)/H8-BINAP or BINAP complex-catalyzed [2+2+2] cycloaddition under mild conditions. This method was applied to the synthesis of benzopicene-based long ladder and helical molecules. The X-ray crystal structure analysis revealed that the benzopicene-based helical molecule is highly distorted and the average distance of overlapped rings is markedly shorter than that in the triphenylene-based helical molecule. Photophysical and chiroptical properties of these benzopicene and azabenzopicene derivatives have also been examined. With respect to photophysical properties, substituted benzopicenes and azabenzopicenes showed red shifts of absorption and emission maxima compared with the corresponding triphenylenes and azatriphenylenes. With respect to chiroptical properties, the CPL spectra of the benzopicene-based helical molecule showed two opposite peaks, and thus the value of the CPL was smaller than that of the triphenylene-based helical molecule presumably due to the presence of two chiral fluorophores.
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Affiliation(s)
- Koichi Murayama
- Department of Chemical Science and Engineering, and ‡Department of Chemistry, Tokyo Institute of Technology , O-okayama, Meguro-ku, Tokyo 152-8550, Japan
| | - Yu Shibata
- Department of Chemical Science and Engineering, and ‡Department of Chemistry, Tokyo Institute of Technology , O-okayama, Meguro-ku, Tokyo 152-8550, Japan
| | - Haruki Sugiyama
- Department of Chemical Science and Engineering, and ‡Department of Chemistry, Tokyo Institute of Technology , O-okayama, Meguro-ku, Tokyo 152-8550, Japan
| | - Hidehiro Uekusa
- Department of Chemical Science and Engineering, and ‡Department of Chemistry, Tokyo Institute of Technology , O-okayama, Meguro-ku, Tokyo 152-8550, Japan
| | - Ken Tanaka
- Department of Chemical Science and Engineering, and ‡Department of Chemistry, Tokyo Institute of Technology , O-okayama, Meguro-ku, Tokyo 152-8550, Japan
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35
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Charge Distribution Dependent Spectral Analysis of the Oxidized Diferrocenyl-Oligothienylene-Vinylene Molecular Wires. Sci Rep 2016; 6:35726. [PMID: 27759107 PMCID: PMC5069631 DOI: 10.1038/srep35726] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2016] [Accepted: 10/04/2016] [Indexed: 11/08/2022] Open
Abstract
The vibrational spectra have been investigated for revealing the comprehensive structure of diferrocenyl-oligothienylene-vinylene complex, stimulated by the excellent experimental reports [group of Casado J. Am. Chem. Soc. 2012, 134, 12, 5675]. The IR and Raman spectra were simulated. It is found that the change of charge distribution and bond length are associated with the variation in the frequencies of specific vibration in infrared spectra for the neutral and radical oxidation states. The theoretical simulation of charge difference density indicate that charge transfer mechanism for neutral and dication states are significant different. The results can offer hints for the rational design of novel and interesting oligomer semiconductor.
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36
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Yan Q, Guo Y, Ichimura A, Tsuji H, Nakamura E. Three-Dimensionally Homoconjugated Carbon-Bridged Oligophenylenevinylene for Perovskite Solar Cells. J Am Chem Soc 2016; 138:10897-904. [DOI: 10.1021/jacs.6b04002] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Qifan Yan
- Department of Chemistry, The University of Tokyo, 7-3-1 Hongo,
Bunkyo-ku, Tokyo 113-0033, Japan
| | - Yunlong Guo
- Department of Chemistry, The University of Tokyo, 7-3-1 Hongo,
Bunkyo-ku, Tokyo 113-0033, Japan
| | - Anna Ichimura
- Department of Chemistry, The University of Tokyo, 7-3-1 Hongo,
Bunkyo-ku, Tokyo 113-0033, Japan
| | - Hayato Tsuji
- Department of Chemistry, The University of Tokyo, 7-3-1 Hongo,
Bunkyo-ku, Tokyo 113-0033, Japan
| | - Eiichi Nakamura
- Department of Chemistry, The University of Tokyo, 7-3-1 Hongo,
Bunkyo-ku, Tokyo 113-0033, Japan
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37
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Guo YB, Liu ZZ, Liu HX, Zhang FY, Yin JQ. A new aromatic probe - The ring stretching vibration Raman spectroscopy frequency. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2016; 164:84-88. [PMID: 27085169 DOI: 10.1016/j.saa.2016.03.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2015] [Revised: 03/04/2016] [Accepted: 03/06/2016] [Indexed: 06/05/2023]
Abstract
A new aromatic criterion is presented to determine the aromatic degree of the high symmetric molecules. Group theory is used to explain the correlation between the aromatic degree and the value of Ring Stretching Vibration Raman Spectroscopic Frequency (RSVRSF). The calculations of the geometrical optimization, nucleus-independent chemical shifts (NICS) and values of the Raman Spectroscopy for the aromatic molecules-LnHn (L=C, Si, Ge, n=3, 5-8) were performed using the Density Functional Theory (DFT) Method, as well as the correlations between the values of their RSVRSF and NICS values by Statistic Package for Social Science (SPSS17.0). There are high positive correlations between the theoretical calculated the NICS values and the value of the RSVRSF (A1g/A1') of the LnHn (L=C, Si, Ge, n=3, 5-8). The bigger the aromatic degree, the bigger the RSVRSF is. The value of the RSVRSF is a new probe of aromaticity. Expectedly, it is predicted that the experimental determination of the aromatic degree can be achieved by the determination of the ring stretching vibration (A1g/A1') Raman spectrum frequencies for the aromatic target molecules.
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Affiliation(s)
- Yan-Bo Guo
- Chemistry and Environment Science College, Inner Mongolia Normal University, Inner Mongolia Key Laboratory of Green Catalysis, Hohhot, Inner Mongolia 010022, China
| | - Zi-Zhong Liu
- Chemistry and Environment Science College, Inner Mongolia Normal University, Inner Mongolia Key Laboratory of Green Catalysis, Hohhot, Inner Mongolia 010022, China.
| | - Hong-Xia Liu
- Chemistry and Environment Science College, Inner Mongolia Normal University, Inner Mongolia Key Laboratory of Green Catalysis, Hohhot, Inner Mongolia 010022, China
| | - Feng-Ying Zhang
- Education Science College, Inner Mongolia Normal University, Hohhot, Inner Mongolia 010022, China
| | - Jun-Qing Yin
- Chemistry and Environment Science College, Inner Mongolia Normal University, Inner Mongolia Key Laboratory of Green Catalysis, Hohhot, Inner Mongolia 010022, China
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38
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Carbon-bridged oligo(p-phenylenevinylene)s for photostable and broadly tunable, solution-processable thin film organic lasers. Nat Commun 2015; 6:8458. [PMID: 26416643 PMCID: PMC4598723 DOI: 10.1038/ncomms9458] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2015] [Accepted: 08/23/2015] [Indexed: 12/02/2022] Open
Abstract
Thin film organic lasers represent a new generation of inexpensive, mechanically flexible devices for spectroscopy, optical communications and sensing. For this purpose, it is desired to develop highly efficient, stable, wavelength-tunable and solution-processable organic laser materials. Here we report that carbon-bridged oligo(p-phenylenevinylene)s serve as optimal materials combining all these properties simultaneously at the level required for applications by demonstrating amplified spontaneous emission and distributed feedback laser devices. A series of six compounds, with the repeating unit from 1 to 6, doped into polystyrene films undergo amplified spontaneous emission from 385 to 585 nm with remarkably low threshold and high net gain coefficients, as well as high photostability. The fabricated lasers show narrow linewidth (<0.13 nm) single mode emission at very low thresholds (0.7 kW cm−2), long operational lifetimes (>105 pump pulses for oligomers with three to six repeating units) and wavelength tunability across the visible spectrum (408–591 nm). Thin film organic solid-state lasers are low-cost flexible devices which require efficient, stable, colour-tunable, solution-processable materials. Here, the authors show that oligo(p-phenylenevinylene)s simultaneously possess all such properties, as demonstrated by their use in laser devices.
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39
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Sasaki S, Hattori K, Igawa K, Konishi GI. Directional Control of π-Conjugation Enabled by Distortion of the Donor Plane in Diarylaminoanthracenes: A Photophysical Study. J Phys Chem A 2015; 119:4898-906. [DOI: 10.1021/acs.jpca.5b03238] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Shunsuke Sasaki
- Department
of Organic and Polymeric Materials, PRESTO Japan Science and Technology
Agency (JST), Tokyo Institute of Technology, Tokyo 152-8552, Japan
| | - Kengo Hattori
- Department
of Organic and Polymeric Materials, PRESTO Japan Science and Technology
Agency (JST), Tokyo Institute of Technology, Tokyo 152-8552, Japan
| | - Kazunobu Igawa
- Institute
for Materials Chemistry and Engineering and Department of Molecular
and Material Sciences, Kyushu University, Fukuoka 816-8580, Japan
| | - Gen-ichi Konishi
- Department
of Organic and Polymeric Materials, PRESTO Japan Science and Technology
Agency (JST), Tokyo Institute of Technology, Tokyo 152-8552, Japan
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40
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Thériault KD, Radford C, Parvez M, Heyne B, Sutherland TC. Structure–property relationship of donor–acceptor acridones – an optical, electrochemical and computational study. Phys Chem Chem Phys 2015. [DOI: 10.1039/c5cp03222a] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
The effect of changing acceptor strength on intramolecular charge transfer absorption and its implication towards organic materials are investigated.
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Affiliation(s)
| | - C. Radford
- Department of Chemistry
- University of Calgary
- Calgary
- Canada
| | - M. Parvez
- Department of Chemistry
- University of Calgary
- Calgary
- Canada
| | - B. Heyne
- Department of Chemistry
- University of Calgary
- Calgary
- Canada
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