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Chen K, Liu Y, Wang Z, Hu S, Zhao Y, Wang W, Liu G, Wang Z, Jiang W. Longitudinal Extension of Double π-Helix Enables Near-Infrared Amplified Dissymmetry and Chiroptical Response. J Am Chem Soc 2024; 146:13499-13508. [PMID: 38696816 DOI: 10.1021/jacs.4c02914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/04/2024]
Abstract
Near-infrared (NIR) circularly polarized light absorbing or emitting holds great promise for highly sensitive and precise bioimaging, biosensing, and photodetectors. Aiming at designing NIR chiral molecular systems with amplified dissymmetry and robust chiroptical response, herein, we present a series of double π-helical dimers with longitudinally extended π-entwined substructures via Ullmann or Yamamoto homocoupling reactions. Circular dichroism (CD) spectra revealed an approximate linear bathochromic shift with the rising number of naphthalene subunits, indicating a red to NIR chiroptical response. Particularly, the terrylene diimide-entwined dimers exhibited the strongest CD intensities, with the maximal |Δε| reaching up to 393 M-1 cm-1 at 666 nm for th-TDI[2]; and a record-high chiroptical response (|ΔΔε|) between the neutral and dianionic species of 520 M-1 cm-1 at 833 nm for th-TDI[2]Cl was achieved upon further reduction to its dianionic state. Time-dependent density functional theory (TDDFT) calculations suggested that the pronounced intensification of the CD spectra originated from a simultaneous enhancement of both electric (μ) and magnetic (m) transition dipole moments, ultimately leading to an overall increase in the rotatory strength (R). Notably, the circularly polarized luminescence (CPL) brightness (BCPL) reached 77 M-1 cm-1 for th-TDI[2]Cl, among the highest values reported for NIR-CPL emitters. Furthermore, all chiral dianions exhibited excellent air stability under ambient conditions with half-life times of up to 10 days in N-methylpyrrolidone (NMP), which is significant for future biological applications and chiroptic switches.
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Affiliation(s)
- Kai Chen
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Yujian Liu
- Key Laboratory of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Zhaolong Wang
- State Key Laboratory of Molecular Reaction Dynamics and Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Shunlong Hu
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Yilun Zhao
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Wei Wang
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Guogang Liu
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Zhaohui Wang
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China
- Key Laboratory of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Wei Jiang
- Key Laboratory of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, China
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2
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Guo H, Lovell JB, Shu C, Pink M, Morton M, Rajca S, Rajca A. Chiral π-Conjugated Double Helical Aminyl Diradical with the Triplet Ground State. J Am Chem Soc 2024; 146:9422-9433. [PMID: 38501228 DOI: 10.1021/jacs.4c02057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/20/2024]
Abstract
We report a neutral high-spin diradical of chiral C2-symmetric bis[5]diazahelicene with ΔEST ≈ 0.4 kcal mol-1, as determined by EPR spectroscopy/SQUID magnetometry. The diradical is the most persistent among all high-spin aminyl radicals reported to date by a factor of 20, with a half-life of up to 6 days in 2-MeTHF at room temperature. Its triplet ground state and excellent persistence may be associated with the unique spin density distribution within the dihydrophenazine moiety, which characterizes two effective 3-electron C-N bonds analogous to the N-O bond of a nitroxide radical. The enantiomerically enriched (ee ≥ 94%) (MM)- and (PP)-enantiomers of the precursors to the diradicals are obtained by either preparative chiral supercritical fluid chromatography or resolution via functionalization with the chiral auxiliary of the C2-symmetric racemic tetraamine. The barrier for the racemization of the solid tetraamine is ΔG‡ = 43 ± 0.01 kcal mol-1 in the 483-523 K range. The experimentally estimated lower limit of the barrier for the racemization of a diradical, ΔG‡ ≥ 26 kcal mol-1 in 2-MeTHF at 293 K, is comparable to the DFT-determined barrier of ΔG‡ = 31 kcal mol-1 in the gas phase at 298 K. While the enantiomerically pure tetraamine displays strong chiroptical properties, with anisotropy factor |g| = |Δε|/ε = 0.036 at 376 nm, |g| ≈ 0.005 at 548 nm of the high-spin diradical is comparable to that recently reported triplet ground-state diradical dication. Notably, the radical anion intermediate in the generation of diradical exhibits a large SOMO-HOMO inversion, SHI = 35 kcal mol-1.
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Affiliation(s)
- Haoxin Guo
- Department of Chemistry, University of Nebraska, Lincoln, Nebraska 68588-0304, United States
| | - Joshua B Lovell
- Teledyne ISCO, 4700 Superior Street, Lincoln, Nebraska 68504-1328, United States
| | - Chan Shu
- Department of Chemistry, University of Nebraska, Lincoln, Nebraska 68588-0304, United States
| | - Maren Pink
- IUMSC, Department of Chemistry, Indiana University, Bloomington, Indiana 47405-7102, United States
| | - Martha Morton
- Department of Chemistry, University of Nebraska, Lincoln, Nebraska 68588-0304, United States
| | - Suchada Rajca
- Department of Chemistry, University of Nebraska, Lincoln, Nebraska 68588-0304, United States
| | - Andrzej Rajca
- Department of Chemistry, University of Nebraska, Lincoln, Nebraska 68588-0304, United States
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3
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Liu Y, Li Z, Wang MW, Chan J, Liu G, Wang Z, Jiang W. Highly Luminescent Chiral Double π-Helical Nanoribbons. J Am Chem Soc 2024; 146:5295-5304. [PMID: 38363710 DOI: 10.1021/jacs.3c11942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2024]
Abstract
Unveiling the mechanism behind chirality propagation and dissymmetry amplification at the molecular level is of significance for the development of chiral systems with comprehensively outstanding chiroptical performances. Herein, we have presented a straightforward Cu-mediated Ullmann homocoupling approach to synthesize perylene diimide-entwined double π-helical nanoribbons encompassing dimer, trimer, and tetramer while producing homochiral or heterochiral linking of chiral centers. A significant dissymmetry amplification was achieved, with absorption dissymmetry factors (|gabs|) increasing from 0.009 to 0.017 and further to 0.019, and luminescence dissymmetry factors (|glum|) rising from 0.007 to 0.013 and eventually to 0.015 for homochiral double π-helical oligomers. The disparity of magnetic transition dipole moment (m) densities in homochiral and heterochiral tetramers by time-dependent density functional theory calculations confirmed that homochiral oligomerization can maximize the total m, which is favorable for achieving ever-increasing g factors. Notably, these double π-helices exhibited exceptional photoluminescence quantum yields (ΦPL) ranging from 83 to 95%. The circularly polarized luminescence brightness (BCPL) eventually reached a remarkable 575 M-1 cm-1 for the homochiral tetramer, which is among the highest values reported for chiral small molecules. This kind of linearly extended double π-helices offers a platform for a comprehensive understanding of the mechanism behind chirality propagation and dissymmetry amplification.
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Affiliation(s)
- Yujian Liu
- Key Laboratory of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Zuoyu Li
- Key Laboratory of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Ming-Wei Wang
- Key Laboratory of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Jiangtao Chan
- Key Laboratory of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Guogang Liu
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Zhaohui Wang
- Key Laboratory of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Wei Jiang
- Key Laboratory of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, China
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4
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Wang X, Hua X, Zhang H, Wu L, Yuan C, Liu Z, Zhang HL, Shao X. Transforming Hetera-Buckybowls into Chiral Conjugated Polycycles Incorporating Epoxycyclooctadiene: a Two-Step Approach. Chemistry 2023; 29:e202303085. [PMID: 37877318 DOI: 10.1002/chem.202303085] [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: 09/22/2023] [Revised: 10/23/2023] [Accepted: 10/24/2023] [Indexed: 10/26/2023]
Abstract
Chiral π-conjugated polycycles have garnered increasing attention due to versatile applications in optoelectronic materials and biological sciences. In this study, we report the synthesis of chiral π-conjugated polycycles incorporating a chiral epoxycyclooctadiene moiety. Our synthetic strategy capitalizes on the novel reactions of hetera-buckybowl triselenasumanene (TSS) and is achieved in two-step manner. Firstly, the TSS is regio-selectively transformed into its ortho-quinone form. Subsequently, the nucleophilic addition reactions of TSS ortho-quinone by phenylethynides are metal ion-dependent. When utilizing (phenylethynyl)magnesium bromide as the nucleophile, two phenylethynyls are furnished onto the edged benzene ring of TSS. When the nucleophile is (phenylethynyl)lithium, a cascade of nucleophilic addition, intermolecular electron-transfer, ring-opening, and tetradehydro-Diels-Alder (TDDA) reactions occur sequentially in one-pot, ultimately affording chiral π-conjugated polycycles featuring the epoxycyclooctadiene moiety as an integral part of their backbones. This work represents a step forward in the synthesis of chiral π-conjugated polycycles using TSS as synthon.
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Affiliation(s)
- Xue Wang
- Research Centre for Free Radical Chemistry of Lanzhou University, State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Tianshui Southern Road 222, Lanzhou, Gansu Province, China
| | - Xinqiang Hua
- Research Centre for Free Radical Chemistry of Lanzhou University, State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Tianshui Southern Road 222, Lanzhou, Gansu Province, China
| | - Haomin Zhang
- Research Centre for Free Radical Chemistry of Lanzhou University, State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Tianshui Southern Road 222, Lanzhou, Gansu Province, China
| | - Lingxi Wu
- Research Centre for Free Radical Chemistry of Lanzhou University, State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Tianshui Southern Road 222, Lanzhou, Gansu Province, China
| | - Chengshan Yuan
- Research Centre for Free Radical Chemistry of Lanzhou University, State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Tianshui Southern Road 222, Lanzhou, Gansu Province, China
| | - Zitong Liu
- Research Centre for Free Radical Chemistry of Lanzhou University, State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Tianshui Southern Road 222, Lanzhou, Gansu Province, China
| | - Hao-Li Zhang
- Research Centre for Free Radical Chemistry of Lanzhou University, State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Tianshui Southern Road 222, Lanzhou, Gansu Province, China
| | - Xiangfeng Shao
- Research Centre for Free Radical Chemistry of Lanzhou University, State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Tianshui Southern Road 222, Lanzhou, Gansu Province, China
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5
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Shu C, Yang Z, Rajca A. From Stable Radicals to Thermally Robust High-Spin Diradicals and Triradicals. Chem Rev 2023; 123:11954-12003. [PMID: 37831948 DOI: 10.1021/acs.chemrev.3c00406] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2023]
Abstract
Stable radicals and thermally robust high-spin di- and triradicals have emerged as important organic materials due to their promising applications in diverse fields. New fundamental properties, such as SOMO/HOMO inversion of orbital energies, are explored for the design of new stable radicals, including highly luminescent ones with good photostability. A relation with the singlet-triplet energy gap in the corresponding diradicals is proposed. Thermally robust high-spin di- and triradicals, with energy gaps that are comparable to or greater than a thermal energy at room temperature, are more challenging to synthesize but more rewarding. We summarize a number of high-spin di- and triradicals, based on nitronyl nitroxides that provide a relation between the experimental pairwise exchange coupling constant J/k in the high-spin species vs experimental hyperfine coupling constants in the corresponding monoradicals. This relation allows us to identify outliers, which may correspond to radicals where J/k is not measured with sufficient accuracy. Double helical high-spin diradicals, in which spin density is delocalized over the chiral π-system, have been barely explored, with the sole example of such high-spin diradical possessing alternant π-system with Kekulé resonance form. Finally, we discuss a high-spin diradical with electrical conductivity and derivatives of triangulene diradicals.
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Affiliation(s)
- Chan Shu
- Department of Chemistry, University of Nebraska, Lincoln, Nebraska 68588-0304, United States
| | - Zhimin Yang
- Department of Chemistry, University of Nebraska, Lincoln, Nebraska 68588-0304, United States
| | - Andrzej Rajca
- Department of Chemistry, University of Nebraska, Lincoln, Nebraska 68588-0304, United States
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6
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Nagase M, Nakano S, Segawa Y. Synthesis of penta- and hexa(3,4-thienylene): size-dependent structural properties of cyclic oligothiophenes. Chem Commun (Camb) 2023; 59:11129-11132. [PMID: 37647017 DOI: 10.1039/d3cc03508e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Abstract
Penta- and hexa(3,4-thienylene)s were synthesized as a potential precursor for thiophene-containing polyarenes, and the structures were determined via X-ray crystallography. The interconversion of thiophene rings is fast in penta(3,4-thienylene), and slow in hexa(3,4-thienylene) reflecting the activation energy for enantiomerization. Size-dependent bathochromic shifts were observed in UV-vis absorption spectra.
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Affiliation(s)
- Mai Nagase
- Institute for Molecular Science, Myodaiji, Okazaki, 444-8787, Japan.
- The Graduate University for Advanced Studies, SOKENDAI, Myodaiji, Okazaki, 444-8787, Japan
| | - Sachiko Nakano
- Institute for Molecular Science, Myodaiji, Okazaki, 444-8787, Japan.
| | - Yasutomo Segawa
- Institute for Molecular Science, Myodaiji, Okazaki, 444-8787, Japan.
- The Graduate University for Advanced Studies, SOKENDAI, Myodaiji, Okazaki, 444-8787, Japan
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7
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Ji Z, Zhao C, Zhang C, Wang Z, Ma Z, Xu L, Wang H. Synthesis and AIE properties of benzene fused cyclooctetrathiophenes. J Photochem Photobiol A Chem 2023. [DOI: 10.1016/j.jphotochem.2022.114362] [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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8
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Porsev V, Evarestov R. Magnetic Properties of Zig-Zag-Edged Hexagonal Nanohelicenes: A Quantum Chemical Study. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:415. [PMID: 36770376 PMCID: PMC9920107 DOI: 10.3390/nano13030415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 01/11/2023] [Accepted: 01/17/2023] [Indexed: 06/18/2023]
Abstract
The atomic structure and electronic and magnetic properties of two zig-zag-edged hexagonal nanohelicenes of the second type [1.2] and [2.2] were studied by the density functional theory. These objects possess a helical periodicity and belong to the fifth family of line symmetry groups in their global energy minimum. These nanohelicenes were shown by us to be diamagnetic metals that undergo spontaneous symmetry breaking into antiferromagnetic semiconductors as a result of the Mott-Hubbard metal-insulator transition. However, under some torsional stress, a reversible transformation to a diamagnetic metal can take place, which is promising for the use of nanohelicenes in electro-magneto-mechanical nanodevices.
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Kasemthaveechok S, Abella L, Crassous J, Autschbach J, Favereau L. Organic radicals with inversion of SOMO and HOMO energies and potential applications in optoelectronics. Chem Sci 2022; 13:9833-9847. [PMID: 36128246 PMCID: PMC9430691 DOI: 10.1039/d2sc02480b] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Accepted: 07/06/2022] [Indexed: 11/21/2022] Open
Abstract
Organic radicals possessing an electronic configuration in which the energy of the singly occupied molecular orbital (SOMO) is below the highest doubly occupied molecular orbital (HOMO) level have recently attracted significant interest, both theoretically and experimentally. The peculiar orbital energetics of these SOMO-HOMO inversion (SHI) organic radicals set their electronic properties apart from the more common situation where the SOMO is the highest occupied orbital of the system. This review gives a general perspective on SHI, with key fundamental aspects regarding the electronic and structural factors that govern this particular electronic configuration in organic radicals. Selected examples of reported compounds with SHI are highlighted to establish molecular guidelines for designing this type of radical, and to showcase the potential of SHI radicals in organic spintronics as well as for the development of more stable luminescent radicals for OLED applications.
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Affiliation(s)
| | - Laura Abella
- Department of Chemistry, University at Buffalo, State University of New York Buffalo New York 14260 USA
| | | | - Jochen Autschbach
- Department of Chemistry, University at Buffalo, State University of New York Buffalo New York 14260 USA
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10
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Liu Y, Ma Z, Wang Z, Jiang W. Boosting Circularly Polarized Luminescence Performance by a Double π-Helix and Heteroannulation. J Am Chem Soc 2022; 144:11397-11404. [PMID: 35715213 DOI: 10.1021/jacs.2c04012] [Citation(s) in RCA: 37] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Design challenges in the development of circularly polarized luminescence (CPL) materials are focused on balancing the luminescence dissymmetry factor (glum) and photoluminescence quantum yield (ΦPL) by regulating the electric (μ) and magnetic (m) transition dipole moment vectors. Aiming at designing efficient CPL emitters and clarifying the chiroptical variation mechanism, herein, we present a double π-helix based on a cyclooctatetraene-embedded perylene diimide dimer that combines chirality with molecular entanglement and very high barriers for racemization. Through finely regulating the magnitudes of μ and m, the maximal dissymmetry factors |gabs| and |glum| can be boosted to 0.035 and 0.030, respectively, as revealed by circular dichroism (CD) and CPL spectra. The results indicate a 3-fold improvement of g values and a modulated ΦPL from 1a, 4, to 5 by nitrogen heteroannulation at the bay region. The CPL brightness (BCPL) of 5 reaches a recorded value of up to 573.4 M-1 cm-1, among the highest values of chiral small molecules reported so far. This work has provided a comprehensive insight into a new class of chiral materials with high CPL activities, further laying molecular fundamentals for chiral optoelectronics.
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Affiliation(s)
- Yujian Liu
- Key Laboratory of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Zetong Ma
- State Key Laboratory of Luminescent Materials and Devices, Institute of Polymer Optoelectronic Materials and Devices, South China University of Technology, Guangzhou 510640, China
| | - Zhaohui Wang
- Key Laboratory of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Wei Jiang
- Key Laboratory of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, China
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11
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Borissov A, Maurya YK, Moshniaha L, Wong WS, Żyła-Karwowska M, Stępień M. Recent Advances in Heterocyclic Nanographenes and Other Polycyclic Heteroaromatic Compounds. Chem Rev 2022; 122:565-788. [PMID: 34850633 PMCID: PMC8759089 DOI: 10.1021/acs.chemrev.1c00449] [Citation(s) in RCA: 215] [Impact Index Per Article: 107.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Indexed: 12/21/2022]
Abstract
This review surveys recent progress in the chemistry of polycyclic heteroaromatic molecules with a focus on structural diversity and synthetic methodology. The article covers literature published during the period of 2016-2020, providing an update to our first review of this topic (Chem. Rev. 2017, 117 (4), 3479-3716).
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Affiliation(s)
| | | | | | | | | | - Marcin Stępień
- Wydział Chemii, Uniwersytet
Wrocławski, ul. F. Joliot-Curie 14, 50-383 Wrocław, Poland
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12
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Miura T, Ishihara Y, Nakamuro T, Moritani S, Nagata Y, Murakami M. Synthesis, Structure, and Dynamics of Chiral Eight-Membered Cyclic Molecules with Thienylene and Cyclopropylene Units Alternately Connected. Chemistry 2021; 28:e202103962. [PMID: 34928539 DOI: 10.1002/chem.202103962] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Indexed: 11/09/2022]
Abstract
A rhodium(II)-catalyzed asymmetric cyclooligomerization of bifunctional monomers possessing triazolyl and vinyl groups at 2,3- and 3,4-positions on the thiophene ring is studied. Structurally interesting cyclic dimers in which thienylene and cyclopropylene units are alternately connected are obtained as the major components. The eight-membered rings in the center are non-planar and adopt a tub-shaped conformation. We also observe the phenomenon of racemization caused by a tub-to-tub ring-flipping, the activation energy of which is determined as 108 kJ mol -1 by electronic circular dichroism spectra measurement.
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Affiliation(s)
- Tomoya Miura
- Okayama University, Division of Applied Chemistry, Tsushimanaka 3-1-1, 700-8530, Okayama, JAPAN
| | - Yumi Ishihara
- Kyoto University, Department of Synthetic Chemistry and Biological Chemistry, JAPAN
| | - Takayuki Nakamuro
- Kyoto University, Department of Synthetic Chemistry and Biological Chemistry, JAPAN
| | - Shunsuke Moritani
- Kyoto University, Department of Synthetic Chemistry and Biological Chemistry, JAPAN
| | - Yuuya Nagata
- Hokkaido University, Institute for Chemical Reaction Design and Discovery, JAPAN
| | - Masahiro Murakami
- Kyoto University, Department of Synthetic Chemistry and Biological Chemistry, JAPAN
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Tripathi A, Kumar V, Chetti P. Stability, optical and charge transport properties of saddle-shaped cyclooctatetrathiophene (COTh) isomers: a theoretical study. J Sulphur Chem 2021. [DOI: 10.1080/17415993.2021.1993851] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Anuj Tripathi
- Department of Chemistry, National Institute of Technology, Kurukshetra, India
| | - Vipin Kumar
- Department of Chemistry, National Institute of Technology, Kurukshetra, India
| | - Prabhakar Chetti
- Department of Chemistry, National Institute of Technology, Kurukshetra, India
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14
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Wu M, Shan Z, Wang J, Gu Z, Wu X, Xu B, Zhang G. Three-dimensional covalent organic frameworks based on a π-conjugated tetrahedral node. Chem Commun (Camb) 2021; 57:10379-10382. [PMID: 34542113 DOI: 10.1039/d1cc03219d] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
The construction of three-dimensional (3D) covalent organic frameworks (COFs), especially fully conjugated 3D COFs, is a long-standing challenge. Herein, we report a saddle-like, π-conjugated cyclooctatetrathiophene (COTh) as a tetrahedral node to construct fully conjugated 3D COFs. The present work enriches the structural diversities and potential applications of 3D COFs.
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Affiliation(s)
- Miaomiao Wu
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, China.
| | - Zhen Shan
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, China.
| | - Jinjian Wang
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, China.
| | - Zhangjie Gu
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, China.
| | - Xiaowei Wu
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, China.
| | - Bingqing Xu
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, China.
| | - Gen Zhang
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, China.
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15
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Rajca A, Shu C, Zhang H, Zhang S, Wang H, Rajca S. Thiophene-Based Double Helices: Radical Cations with SOMO-HOMO Energy Level Inversion †. Photochem Photobiol 2021; 97:1376-1390. [PMID: 34152605 DOI: 10.1111/php.13475] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Accepted: 06/17/2021] [Indexed: 11/29/2022]
Abstract
We report relatively persistent, open-shell thiophene-based double helices, radical cations 1•+ -TMS12 and 2•+ -TMS8 . Closed-shell neutral double helices, 1-TMS12 and 2-TMS8 , have nearly identical first oxidation potentials, E+/0 ≈ +1.33 V, corresponding to reversible oxidation to their radical cations. The radical cations are generated, using tungsten hexachloride in dichloromethane (DCM) as an oxidant, E+/0 ≈ +1.56 V. EPR spectra consist of a relatively sharp singlet peak with an unusually low g-value of 2.001-2.002, thus suggesting exclusive delocalization of spin density over π-conjugated system consisting of carbon atoms only. DFT computations confirm these findings, as only negligible fraction of spin density is found on sulfur and silicon atoms and the spin density is delocalized over a single tetrathiophene moiety. For radical cation, 1•+ -TMS12 , energy level of the singly occupied molecular orbital (SOMO) lies below the four highest occupied molecular orbitals (HOMOs), thus indicating the SOMO-HOMO inversion (SHI) and therefore, violating the Aufbau principle. 1•+ -TMS12 has a half-life of the order of only 5 min at room temperature. EPR peak intensity of 2•+ -TMS8 , which does not show SHI, is practically unchanged over at least 2 h.
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Affiliation(s)
- Andrzej Rajca
- Department of Chemistry, University of Nebraska, Lincoln, NE, USA
| | - Chan Shu
- Department of Chemistry, University of Nebraska, Lincoln, NE, USA
| | - Hui Zhang
- Department of Chemistry, University of Nebraska, Lincoln, NE, USA
| | - Sheng Zhang
- Engineering Research Center for Nanomaterials, Henan University, Kaifeng, China
| | - Hua Wang
- Engineering Research Center for Nanomaterials, Henan University, Kaifeng, China
| | - Suchada Rajca
- Department of Chemistry, University of Nebraska, Lincoln, NE, USA
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16
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Tian Y, Wang C, Wang G, Xu L, Wang H. Ag-Induced metallogel based on cyclooctatetrathiophene: structural characterization and stimuli-responsive properties. SOFT MATTER 2021; 17:341-345. [PMID: 33415325 DOI: 10.1039/d0sm01957g] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Based on saddle-shaped cyclooctathiophene (COTh) as a building block, ligands 2 and 3 were synthesized bearing 3- or 4-substituted pyridyl groups as coordination groups, which showed strong gelation abilities with AgBF4 in several solvents at room temperature. This Ag+-induced metallogel exhibited outstanding stimuli-responsive properties upon addition of halogen ions, acetonitrile or H2O.
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Affiliation(s)
- Yu Tian
- Engineering Research Center for Nanomaterials, Henan University, Kaifeng, 475004, China.
| | - Chenglong Wang
- Engineering Research Center for Nanomaterials, Henan University, Kaifeng, 475004, China.
| | - Guangxia Wang
- Engineering Research Center for Nanomaterials, Henan University, Kaifeng, 475004, China.
| | - Li Xu
- College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, China
| | - Hua Wang
- Engineering Research Center for Nanomaterials, Henan University, Kaifeng, 475004, China.
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17
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Nie H, Li QH, Zhang S, Wang CM, Lin WH, Deng K, Shu LJ, Zeng QD, Wan JH. Figure-eight arylene ethynylene macrocycles: facile synthesis and specific binding behavior toward Hg 2+. Org Chem Front 2021. [DOI: 10.1039/d1qo00812a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two figure-eight arylene ethynylene macrocycles (AEMs) were synthesized from non-helical precursors and the figure-eight shape was clearly imaged by STM.
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Affiliation(s)
- Hui Nie
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou, 310012, P. R. China
| | - Qian-Hui Li
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou, 310012, P. R. China
| | - Siqi Zhang
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST), Beijing 100190, P. R. China
| | - Chuan-Ming Wang
- Shanghai Research Institute of Petrochemical Technology, SINOPEC, Shanghai, 201208, P. R. China
| | - Wen-Hui Lin
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou, 310012, P. R. China
| | - Ke Deng
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST), Beijing 100190, P. R. China
| | - Li-Jin Shu
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou, 310012, P. R. China
| | - Qing-Dao Zeng
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST), Beijing 100190, P. R. China
| | - Jun-Hua Wan
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou, 310012, P. R. China
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18
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Ji C, Wang G, Wang H. Progress in Metal-Organic Supramolecular System Based on Subcomponent Self-Assembly. CHINESE J ORG CHEM 2021. [DOI: 10.6023/cjoc202012030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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19
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Zhao C, Ma Z, Li C, Xu L, Wang H. Thiophene and naphthalene-based double helix: Synthesis, structures and chirality. CHINESE CHEM LETT 2021. [DOI: 10.1016/j.cclet.2020.05.040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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20
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Ozcelik A, Pereira-Cameselle R, Alonso-Gómez JL. From Allenes to Spirobifluorenes: On the Way to Device-compatible Chiroptical Systems. CURR ORG CHEM 2020. [DOI: 10.2174/1385272824999201013164534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The last decade has seen a huge growth in the construction of chiral systems to
expand the scope of chiroptical applications. Dependence of chiroptical response on molecular
conformation typically leads to low chiroptical intensities of chiral systems that feature
several conformations in solution. In this respect, allenes were employed for the preparation
of open and cyclic oligomers as well as molecular cages, presenting remarkable chiroptical
responses in solution. Their molecular chirality was also transferred to metal surfaces, yet
photoisomerization of allenes limited their further exploration. In search of a more robust
chiral axis, theoretical and experimental studies confirmed that spirobifluorenes could give
rise to stable systems with tailored optical and chiroptical properties. Additionally, incorporating
a conformational lock into spirobifluorene cyclic architectures served as an efficient
strategy towards the generation of distinct helical molecular orbitals. This review article outlines our results on developing
device-compatible chiroptical systems through axially chiral allenes and spirobifluorenes. The contribution
from other research groups is presented briefly.
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Affiliation(s)
- Ani Ozcelik
- Department of Organic Chemistry, Faculty of Chemistry, University of Vigo, Vigo, Spain
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21
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Shu C, Zhang H, Olankitwanit A, Rajca S, Rajca A. High-Spin Diradical Dication of Chiral π-Conjugated Double Helical Molecule. J Am Chem Soc 2019; 141:17287-17294. [PMID: 31596077 DOI: 10.1021/jacs.9b08711] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
We report an air-stable diradical dication of chiral D2-symmetric conjoined bis[5]diazahelicene with an unprecedented high-spin (triplet) ground state, singlet triplet energy gap, ΔEST = 0.3 kcal mol-1. The diradical dication possesses closed-shell (Kekulé) resonance forms with 16 π-electron perimeters. The diradical dication is monomeric in dibutyl phthalate (DBP) matrix at low temperatures, and it has a half-life of more than 2 weeks at ambient conditions in the presence of excess oxidant. A barrier of ∼35 kcal mol-1 has been experimentally determined for inversion of configuration in the neutral conjoined bis[5]diazahelicene, while the inversion barriers in its radical cation and diradical dication were predicted by the DFT computations to be within a few kcal mol-1 of that in the neutral species. Chiral HPLC resolution provides the chiral D2-symmetric conjoined bis[5]diazahelicene, enriched in (P,P)- or (M,M)-enantiomers. The enantiomerically enriched triplet diradical dication is configurationally stable for 48 h at room temperature, thus providing the lower limit for inversion barrier of configuration of 27 kcal mol-1. The enantiomers of conjoined bis[5]diazahelicene and its diradical dication show strong chirooptical properties that are comparable to [6]helicene or carbon-sulfur [7]helicene, as determined by the anisotropy factors, |g| = |Δε|/ε = 0.007 at 348 nm (neutral) and |g| = 0.005 at 385 nm (diradical dication). DFT computations of the radical cation suggest that SOMO and HOMO energy levels are near-degenerate.
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Affiliation(s)
- Chan Shu
- Department of Chemistry , University of Nebraska , Lincoln , Nebraska 68588-0304 , United States
| | - Hui Zhang
- Department of Chemistry , University of Nebraska , Lincoln , Nebraska 68588-0304 , United States
| | - Arnon Olankitwanit
- Department of Chemistry , University of Nebraska , Lincoln , Nebraska 68588-0304 , United States
| | - Suchada Rajca
- Department of Chemistry , University of Nebraska , Lincoln , Nebraska 68588-0304 , United States
| | - Andrzej Rajca
- Department of Chemistry , University of Nebraska , Lincoln , Nebraska 68588-0304 , United States
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22
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Non-aromatic annulene-based aggregation-induced emission system via aromaticity reversal process. Nat Commun 2019; 10:2952. [PMID: 31273202 PMCID: PMC6609648 DOI: 10.1038/s41467-019-10818-5] [Citation(s) in RCA: 86] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Accepted: 06/04/2019] [Indexed: 01/08/2023] Open
Abstract
Aggregation-induced emission (AIE) is a photophysical phenomenon correlated closely with the excited-state intramolecular motions. Although AIE has attracted increasing attention due to the significant applications in biomedical and optoelectronics, an in-depth understanding of the excited-state intramolecular motion has yet to be fully developed. Here we found the non-aromatic annulene derivative of cyclooctatetrathiophene shows typical AIE phenomenon in spite of its rotor-free structure. The underlying mechanism is investigated through photoluminescence spectra, time-resolved absorption spectra, theoretical calculations, circular dichroism as well as by pressure-dependent fluorescent spectra etc., which indicate that the aromaticity reversal from ground state to the excited state serves as a driving force for inducing the excited-state intramolecular vibration, leading to the AIE phenomenon. Therefore, aromaticity reversal is demonstrated as a reliable strategy to develop vibrational AIE systems. This work also provides a new viewpoint to understand the excited-state intramolecular motion behavior of lumiongens.
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23
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Miki K, Noda T, Gon M, Tanaka K, Chujo Y, Mizuhata Y, Tokitoh N, Ohe K. Near‐Infrared Circularly Polarized Luminescence through Intramolecular Excimer Formation of Oligo(
p
‐phenyleneethynylene)‐Based Double Helicates. Chemistry 2019; 25:9211-9216. [DOI: 10.1002/chem.201901467] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Indexed: 12/16/2022]
Affiliation(s)
- Koji Miki
- Department of Energy and Hydrocarbon ChemistryGraduate School of EngineeringKyoto University Katsura Nishikyo-ku, Kyoto 615–8510 Japan
| | - Takeru Noda
- Department of Energy and Hydrocarbon ChemistryGraduate School of EngineeringKyoto University Katsura Nishikyo-ku, Kyoto 615–8510 Japan
| | - Masayuki Gon
- Department of Polymer ChemistryGraduate School of EngineeringKyoto University Katsura Nishikyo-ku, Kyoto 615-8510 Japan
| | - Kazuo Tanaka
- Department of Polymer ChemistryGraduate School of EngineeringKyoto University Katsura Nishikyo-ku, Kyoto 615-8510 Japan
| | - Yoshiki Chujo
- Department of Polymer ChemistryGraduate School of EngineeringKyoto University Katsura Nishikyo-ku, Kyoto 615-8510 Japan
| | - Yoshiyuki Mizuhata
- Institute for Chemical ResearchKyoto University Gokasho Uji, Kyoto 611-0011 Japan
| | - Norihiro Tokitoh
- Institute for Chemical ResearchKyoto University Gokasho Uji, Kyoto 611-0011 Japan
| | - Kouichi Ohe
- Department of Energy and Hydrocarbon ChemistryGraduate School of EngineeringKyoto University Katsura Nishikyo-ku, Kyoto 615–8510 Japan
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24
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Li B, Zhang S, Li L, Ma Z, Li C, Xu L, Wang H. All-Thiophene-Based Double Helix: Synthesis, Crystal Structure, Chiroptical Property and Arylation. ACS OMEGA 2018; 3:16014-16020. [PMID: 31458239 PMCID: PMC6644213 DOI: 10.1021/acsomega.8b02492] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/23/2018] [Accepted: 11/07/2018] [Indexed: 06/10/2023]
Abstract
The all-thiophene-based double helix DH-1 was designed and prepared originally from the selective deprotonation of cyclooctatetrathiophene (tetra[3,4]thienylene, COTh) and following the Negishi coupling reaction with 3,3'-bithiophene. The X-ray crystallographic studies revealed that DH-1 has a double-helical scaffold. The arylations including tetraphenylation and tetrathienylation were efficiently employed to replace the four α-protons of the central COTh of DH-1 with phenyl and thiophenyl groups via cross-coupling reactions. The chiral resolution of rac-DH-1 was fulfilled via chiral high-performance liquid chromatography, and the chiroptical properties were characterized by circular dichroism spectra and optical rotation. Ultraviolet-visible absorption and fluorescence behaviors of DH-1 and its arylation products were also characterized to describe the extended conjugated scaffold.
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Affiliation(s)
- Bingbing Li
- Engineering
Research Center for Nanomaterials and College of Chemistry and Chemical
Engineering, Henan University, Kaifeng 475004, P. R. China
| | - Sheng Zhang
- Engineering
Research Center for Nanomaterials and College of Chemistry and Chemical
Engineering, Henan University, Kaifeng 475004, P. R. China
| | - Lu Li
- School
of Chemistry and Chemical Engineering, Shangqiu
Normal University, Shangqiu 476000, P. R. China
| | - Zhiying Ma
- Engineering
Research Center for Nanomaterials and College of Chemistry and Chemical
Engineering, Henan University, Kaifeng 475004, P. R. China
| | - Chunli Li
- Engineering
Research Center for Nanomaterials and College of Chemistry and Chemical
Engineering, Henan University, Kaifeng 475004, P. R. China
| | - Li Xu
- Engineering
Research Center for Nanomaterials and College of Chemistry and Chemical
Engineering, Henan University, Kaifeng 475004, P. R. China
| | - Hua Wang
- Engineering
Research Center for Nanomaterials and College of Chemistry and Chemical
Engineering, Henan University, Kaifeng 475004, P. R. China
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25
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Tian Y, Wang G, Ma Z, Xu L, Wang H. Homochiral Double Helicates Based on Cyclooctatetrathiophene: Chiral Self-Sorting with the Intramolecular S⋅⋅⋅N Interaction. Chemistry 2018; 24:15993-15997. [DOI: 10.1002/chem.201803948] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Indexed: 01/31/2023]
Affiliation(s)
- Yu Tian
- Engineering Research Center for Nanomaterials; Henan University; Kaifeng 475004 P. R. China
| | - Guangxia Wang
- Engineering Research Center for Nanomaterials; Henan University; Kaifeng 475004 P. R. China
| | - Zhiying Ma
- Engineering Research Center for Nanomaterials; Henan University; Kaifeng 475004 P. R. China
| | - Li Xu
- College of Chemistry and Chemical Engineering; Henan University; Kaifeng 475004 P. R. China
| | - Hua Wang
- Engineering Research Center for Nanomaterials; Henan University; Kaifeng 475004 P. R. China
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26
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Li P, Lai Y, Wang Y, Qian Y, Duan W, Li C, Wang Z, Fang Q, Wang H, Tu B, Geng Y, Zeng Q. Adsorption of helical and saddle-shaped oligothiophenes on solid surface. Sci China Chem 2018. [DOI: 10.1007/s11426-017-9233-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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27
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Li L, Zhao S, Li B, Xu L, Li C, Shi J, Wang H. From Saddle-Shaped to Planar Cyclic Oligothienoacenes: Stepped-Cyclization and Their Applications in OFETs. Org Lett 2018; 20:2181-2185. [DOI: 10.1021/acs.orglett.8b00482] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Lu Li
- School of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu 476000, P. R. China
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28
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Zhao C, Cai X, Ma Z, Shi J, Xu L, Wang H. Excimer formation from particially overlapped anthracene dimer based on saddle-shaped cyclooctatetrathiophene as spacer. J Photochem Photobiol A Chem 2018. [DOI: 10.1016/j.jphotochem.2017.08.030] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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29
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Hu Y, Xu X, Jiang Y, Zhang G, Li W, Sun X, Tian WQ, Feng Y. Double-helix PnLin chains: novel potential nonlinear optical materials. Phys Chem Chem Phys 2018; 20:12618-12623. [DOI: 10.1039/c8cp01116h] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The structures, circular dichroism (CD) spectra and nonlinear optical (NLO) responses of a series of inorganic double-helix chains, PnLin (n = 6–12), have been investigated using the quantum chemistry method.
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Affiliation(s)
- Yangyang Hu
- Key Laboratory of Green Chemical Technology of College of Heilongjiang Province
- College of Chemical and Environmental Engineering
- Harbin University of Science and Technology
- Harbin 150080
- China
| | - Xiaodong Xu
- Department of Physics
- Harbin Institute of Technology
- Harbin 150001
- China
| | - Yingjie Jiang
- Key Laboratory of Green Chemical Technology of College of Heilongjiang Province
- College of Chemical and Environmental Engineering
- Harbin University of Science and Technology
- Harbin 150080
- China
| | - Guiling Zhang
- Key Laboratory of Green Chemical Technology of College of Heilongjiang Province
- College of Chemical and Environmental Engineering
- Harbin University of Science and Technology
- Harbin 150080
- China
| | - Weiqi Li
- Department of Physics
- Harbin Institute of Technology
- Harbin 150001
- China
| | - Xiudong Sun
- Department of Physics
- Harbin Institute of Technology
- Harbin 150001
- China
- Key Laboratory of Micro-Nano Optoelectronic Information System
| | - Wei Quan Tian
- College of Chemistry and Chemical Engineering
- Chongqing University
- Chongqing
- P. R. China
| | - Yunan Feng
- Department of Integrated Service
- Heilongjiang Undergraduate Career and Entrepreneurship Center
- Harbin 150090
- China
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30
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Castro-Fernández S, Yang R, García AP, Garzón IL, Xu H, Petrovic AG, Alonso-Gómez JL. Diverse Chiral Scaffolds from Diethynylspiranes: All-Carbon Double Helices and Flexible Shape-Persistent Macrocycles. Chemistry 2017; 23:11747-11751. [DOI: 10.1002/chem.201702986] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Indexed: 11/11/2022]
Affiliation(s)
- Silvia Castro-Fernández
- Departamento de Química Orgánica; Universidade de Vigo; Lagoas-Marcosende s/n Vigo 36310 Spain
| | - Ren Yang
- College of Chemistry and Chemical Engineering; Central South University; 932 Lushan S Rd, Yuelu, Changsha Hunan P. R. China
| | - A. Patricio García
- Instituto de Física; Universidad Nacional Autónoma de México; Apartado Postal 20-364 01000 México, D. F. México
| | - Ignacio L. Garzón
- Instituto de Física; Universidad Nacional Autónoma de México; Apartado Postal 20-364 01000 México, D. F. México
| | - Hai Xu
- College of Chemistry and Chemical Engineering; Central South University; 932 Lushan S Rd, Yuelu, Changsha Hunan P. R. China
| | - Ana G. Petrovic
- Department of Life Sciences; New York Institute of Technology; 1855 Broadway New York NY 10023 USA
| | - J. Lorenzo Alonso-Gómez
- Departamento de Química Orgánica; Universidade de Vigo; Lagoas-Marcosende s/n Vigo 36310 Spain
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31
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Li L, Li B, Li C, Ma Z, Xu L, Wang H. Selective deprotonation of tetra[3,4]thienylene in the presence of n-BuLi. Org Chem Front 2017. [DOI: 10.1039/c6qo00754f] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The sequential lithiation mechanism for the selective deprotonation of tetra[3,4]thienylene (1) to form Li4-1 in the present of n-BuLi in THF is investigated.
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Affiliation(s)
- Lu Li
- Engineering Research Center for Nanomaterials
- Henan University
- Kaifeng
- P. R. China
- School of Chemistry and Chemical Engineering
| | - Bingbing Li
- Engineering Research Center for Nanomaterials
- Henan University
- Kaifeng
- P. R. China
| | - Chunli Li
- Engineering Research Center for Nanomaterials
- Henan University
- Kaifeng
- P. R. China
| | - Zhiying Ma
- Engineering Research Center for Nanomaterials
- Henan University
- Kaifeng
- P. R. China
| | - Li Xu
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng
- P. R. China
| | - Hua Wang
- Engineering Research Center for Nanomaterials
- Henan University
- Kaifeng
- P. R. China
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32
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Xu YL, Fu JY, Liu CH, Ding T. Synthesis of tetrasubstituted 1H-indazolo[1,2-b]phthalazinedione derivatives bearing three-dimensional turbine-type structures via domino reaction of phthalhydrazide and vinylketones. RSC Adv 2017. [DOI: 10.1039/c7ra06856e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
A domino reaction of phthalhydrazide and vinylketone in the presence of phosphotungstic acid was established, and 3D turbine-type tetrasubstituted 1H-indazolo[1,2-b]phthalazinedione derivatives were conveniently obtained with up to 95% yield.
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Affiliation(s)
- Ya-Lun Xu
- Henan Engineering Laboratory of Flame-Retardant and Functional Materials
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng
- China
| | - Ji-Ya Fu
- Henan Engineering Laboratory of Flame-Retardant and Functional Materials
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng
- China
| | - Chun-Hui Liu
- Henan Engineering Laboratory of Flame-Retardant and Functional Materials
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng
- China
| | - Tao Ding
- Henan Engineering Laboratory of Flame-Retardant and Functional Materials
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng
- China
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