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Haketa Y, Yamasumi K, Maeda H. π-Electronic ion pairs: building blocks for supramolecular nanoarchitectonics viaiπ- iπ interactions. Chem Soc Rev 2023; 52:7170-7196. [PMID: 37795542 DOI: 10.1039/d3cs00581j] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/06/2023]
Abstract
The pairing of charged π-electronic systems and their ordered arrangement have been achieved by iπ-iπ interactions that are derived from synergetically worked electrostatic and dispersion forces. Charged π-electronic systems that provide ion pairs as building blocks for assemblies have been prepared by diverse strategies for introducing charge in the core π-electronic systems. One method to prepare charged π-electronic systems is the use of covalent bonding that makes π-electronic ions and valence-mismatched metal complexes as well as protonated and deprotonated states. Noncovalent ion complexation is another method used to create π-electronic ions, particularly for anion binding, producing negatively charged π-electronic systems. Charged π-electronic systems afford various ion pairs, consisting of both cationic and anionic π-systems, depending on their combinations. Geometries and electronic states of the constituents in π-electronic ion pairs affect the photophysical properties and assembling modes. Recent progress in π-electronic ion pairs has revealed intriguing characteristics, including the transformation into radical pairs through electron transfer and the magnetic properties influenced by the countercations. Furthermore, the assembly states exhibit diversity as observed in crystals and soft materials including liquid-crystal mesophases. While the chemistry of ion pairs (salts) is well-established, the field of π-electronic ion pairs is relatively new; however, it holds great promise for future applications in novel materials and devices.
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Affiliation(s)
- Yohei Haketa
- Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University, Kusatsu 525-8577, Japan.
| | - Kazuhisa Yamasumi
- Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University, Kusatsu 525-8577, Japan.
| | - Hiromitsu Maeda
- Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University, Kusatsu 525-8577, Japan.
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Yamasumi K, Sugiura S, Tanaka H, Maeda H. Charged π-Electronic Systems That Provide Assembled Structures. J SYN ORG CHEM JPN 2022. [DOI: 10.5059/yukigoseikyokaishi.80.232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
| | | | | | - Hiromitsu Maeda
- Department of Applied Chemistry, College of Life Sciences, Ritsumeikan Universit
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Yamasumi K, Maeda H. Charged Porphyrins: π-Electronic Systems That Form Ion-Pairing Assembled Structures. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2021. [DOI: 10.1246/bcsj.20210232] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Kazuhisa Yamasumi
- Department of Applied Chemistry, College of Sciences, Ritsumeikan University, Kusatsu, Shiga 525-8577, Japan
| | - Hiromitsu Maeda
- Department of Applied Chemistry, College of Sciences, Ritsumeikan University, Kusatsu, Shiga 525-8577, Japan
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Sasano Y, Tanaka H, Haketa Y, Kobayashi Y, Ishibashi Y, Morimoto T, Sato R, Shigeta Y, Yasuda N, Asahi T, Maeda H. Ion-pairing π-electronic systems: ordered arrangement and noncovalent interactions of negatively charged porphyrins. Chem Sci 2021; 12:9645-9657. [PMID: 34349936 PMCID: PMC8293984 DOI: 10.1039/d1sc02260a] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Accepted: 06/11/2021] [Indexed: 11/21/2022] Open
Abstract
In this study, charged π-electronic species are observed to develop stacking structures based on electrostatic and dispersion forces. i π- i π Interaction, defined herein, functions for the stacking structures consisting of charged π-electronic species and is in contrast to conventional π-π interaction, which mainly exhibits dispersion force, for electronically neutral π-electronic species. Establishing the concept of i π- i π interaction requires the evaluation of interionic interactions for π-electronic ion pairs. Free base (metal-free) and diamagnetic metal complexes of 5-hydroxy-10,15,20-tris(pentafluorophenyl)porphyrin were synthesized, producing π-electronic anions upon the deprotonation of the hydroxy unit. Coexisting cations in the ion pairs with porphyrin anions were introduced as the counter species of the hydroxy anion as a base for commercially available cations and as ion-exchanged species, via Na+ in the intermediate ion pairs, for synthesized π-electronic cations. Solid-state ion-pairing assemblies were constructed for the porphyrin anions in combination with aliphatic tetrabutylammonium (TBA+) and π-electronic 4,8,12-tripropyl-4,8,12-triazatriangulenium (TATA+) cations. The ordered arrangements of charged species, with the contributions of the charge-by-charge and charge-segregated modes, were observed according to the constituent charged building units. The energy decomposition analysis (EDA) of single-crystal packing structures revealed that electrostatic and dispersion forces are important factors in stabilizing the stacking of π-electronic ions. Furthermore, crystal-state absorption spectra of the ion pairs were correlated with the assembling modes. Transient absorption spectroscopy of the single crystals revealed the occurrence of photoinduced electron transfer from the π-electronic anion in the charge-segregated mode.
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Affiliation(s)
- Yoshifumi Sasano
- Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University Kusatsu 525-8577 Japan
| | - Hiroki Tanaka
- Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University Kusatsu 525-8577 Japan
| | - Yohei Haketa
- Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University Kusatsu 525-8577 Japan
| | - Yoichi Kobayashi
- Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University Kusatsu 525-8577 Japan
| | - Yukihide Ishibashi
- Department of Materials Science and Biotechnology, Graduate School of Science and Engineering, Ehime University Matsuyama 790-8577 Japan
| | - Tatsuki Morimoto
- Department of Applied Chemistry, School of Engineering, Tokyo University of Technology Hachioji 192-0982 Japan
| | - Ryuma Sato
- RIKEN Center for Biosystems Dynamics Research (BDR) Suita 565-0874 Japan
| | - Yasuteru Shigeta
- Center for Computational Sciences, University of Tsukuba Tsukuba 305-8577 Japan.,Department of Physics, Graduate School of Pure and Applied Sciences, University of Tsukuba Tsukuba 305-8577 Japan
| | - Nobuhiro Yasuda
- Diffraction and Scattering Division, Japan Synchrotron Radiation Research Institute Sayo 679-5198 Japan
| | - Tsuyoshi Asahi
- Department of Materials Science and Biotechnology, Graduate School of Science and Engineering, Ehime University Matsuyama 790-8577 Japan
| | - Hiromitsu Maeda
- Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University Kusatsu 525-8577 Japan
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Fumoto N, Haketa Y, Tanaka H, Yasuda N, Maeda H. π-Electronic Ion-Pairing Assemblies of Deprotonation-Induced Anions. Org Lett 2021; 23:3897-3901. [PMID: 33885317 DOI: 10.1021/acs.orglett.1c00996] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Dipyrrolylnitrophenols (DPPhs) afforded various hydrogen-bonding-stabilized π-electronic anions upon deprotonation. Through ion-pair metathesis, π-electronic cations were introduced as a counter species to provide π-electronic ion pairs that occurred as tightly bound states in solution while resulting in solid-state charge-by-charge assemblies. The assembling modes were modulated according to the geometries and electronic states of the positively charged constituents along with the substituents of the DPPh anions.
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Affiliation(s)
- Nobuhiro Fumoto
- Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University, Kusatsu 525-8577, Japan
| | - Yohei Haketa
- Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University, Kusatsu 525-8577, Japan
| | - Hiroki Tanaka
- Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University, Kusatsu 525-8577, Japan
| | - Nobuhiro Yasuda
- Diffraction and Scattering Division, Japan Synchrotron Radiation Research Institute, Sayo 679-5198, Japan
| | - Hiromitsu Maeda
- Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University, Kusatsu 525-8577, Japan
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Hansen PE. A Spectroscopic Overview of Intramolecular Hydrogen Bonds of NH…O,S,N Type. Molecules 2021; 26:2409. [PMID: 33919132 PMCID: PMC8122615 DOI: 10.3390/molecules26092409] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Revised: 04/12/2021] [Accepted: 04/18/2021] [Indexed: 02/06/2023] Open
Abstract
Intramolecular NH…O,S,N interactions in non-tautomeric systems are reviewed in a broad range of compounds covering a variety of NH donors and hydrogen bond acceptors. 1H chemical shifts of NH donors are good tools to study intramolecular hydrogen bonding. However in some cases they have to be corrected for ring current effects. Deuterium isotope effects on 13C and 15N chemical shifts and primary isotope effects are usually used to judge the strength of hydrogen bonds. Primary isotope effects are investigated in a new range of magnitudes. Isotope ratios of NH stretching frequencies, νNH/ND, are revisited. Hydrogen bond energies are reviewed and two-bond deuterium isotope effects on 13C chemical shifts are investigated as a possible means of estimating hydrogen bond energies.
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Affiliation(s)
- Poul Erik Hansen
- Department of Science and Environment, Roskilde University, Universitetsvej 1, DK-4000 Roskilde, Denmark
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Jiang XD, Shao Z, Sun C, Yue S, Shang R, Yamamoto Y. Development of aryl-containing dipyrrolyldiketone difluoroboron complexes (BONEPYs): Tune the hydrogen bond o–C H···F for fluoride recognition. CHINESE CHEM LETT 2020. [DOI: 10.1016/j.cclet.2019.09.053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Sasano Y, Haketa Y, Tanaka H, Yasuda N, Hisaki I, Maeda H. Peripheral Modifications of meso-Hydroxyporphyrins: Formation of π-Electronic Anions and Ion-Pairing Assemblies. Chemistry 2019; 25:6712-6717. [PMID: 30913316 DOI: 10.1002/chem.201901095] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2019] [Revised: 03/24/2019] [Indexed: 11/11/2022]
Abstract
Phenyl groups were introduced at the β-positions proximal to the meso-hydroxy moiety in hydroxyporphyrin NiII complexes by oxidized BINAP PdII complexes. Ion-pairing assemblies of deprotonated π-electronic anions, anionic site of which was stabilized by the introduced phenyl moieties with a bulky cation, were formed. They showed charge-by-charge assemblies, assembly modes of which were modulated by the anionic building units.
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Affiliation(s)
- Yoshifumi Sasano
- Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University, Kusatsu, 525-8577, Japan
| | - Yohei Haketa
- Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University, Kusatsu, 525-8577, Japan
| | - Hiroki Tanaka
- Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University, Kusatsu, 525-8577, Japan
| | - Nobuhiro Yasuda
- Research and Utilization Division, Japan Synchrotron Radiation Research Institute, Sayo, 679-5198, Japan
| | - Ichiro Hisaki
- Green Nanotechnology Research Center, Research Institute for Electronic Science, Hokkaido University, Sapporo, 001-0020, Japan
| | - Hiromitsu Maeda
- Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University, Kusatsu, 525-8577, Japan
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Kumar S, Malik V, Shukla J, Kumar Y, Bansal D, Chatterjee R, Mukhopadhyay P. Ionic Assembly, Anion–π, Magnetic, and Electronic Attributes of Ambient Stable Naphthalenediimide Radical Ions. Chemistry 2019; 25:4740-4750. [DOI: 10.1002/chem.201805978] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Revised: 01/30/2019] [Indexed: 12/12/2022]
Affiliation(s)
- Sharvan Kumar
- Supramolecular and Material Chemistry LabSchool of Physical SciencesJawaharlal Nehru University New Delhi 110067 India
| | - Vikas Malik
- Department of PhysicsIndian Institute of Technology, Delhi, New Delhi 110016 India
| | - Jyoti Shukla
- Supramolecular and Material Chemistry LabSchool of Physical SciencesJawaharlal Nehru University New Delhi 110067 India
| | - Yogendra Kumar
- Supramolecular and Material Chemistry LabSchool of Physical SciencesJawaharlal Nehru University New Delhi 110067 India
| | - Deepak Bansal
- Supramolecular and Material Chemistry LabSchool of Physical SciencesJawaharlal Nehru University New Delhi 110067 India
| | - Ratnamala Chatterjee
- Department of PhysicsIndian Institute of Technology, Delhi, New Delhi 110016 India
| | - Pritam Mukhopadhyay
- Supramolecular and Material Chemistry LabSchool of Physical SciencesJawaharlal Nehru University New Delhi 110067 India
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Yamakado R, Ishibashi H, Motoyoshi Y, Yasuda N, Maeda H. Ion-pairing assemblies based on π-extended dipyrrolylquinoxalines. Chem Commun (Camb) 2019; 55:326-329. [PMID: 30534787 DOI: 10.1039/c8cc08205g] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
α-Aryl-substituted dipyrrolylquinoxalines were synthesized and were converted to deprotonated forms stabilized by intramolecular hydrogen bonding, providing π-electronic anions, which act as building units of ion-pairing assemblies in combination with countercations.
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Affiliation(s)
- Ryohei Yamakado
- Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University, Kusatsu 525-8577, Japan.
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