1
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Sabirov DS, Tukhbatullina AA. Distributed Polarizability Model for Covalently Bonded Fullerene Nanoaggregates: Origins of Polarizability Exaltation. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:4404. [PMID: 36558256 PMCID: PMC9781774 DOI: 10.3390/nano12244404] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Revised: 12/06/2022] [Accepted: 12/07/2022] [Indexed: 06/17/2023]
Abstract
Polarizability exaltation is typical for (C60)n nanostructures. It relates to the ratio between the mean polarizabilities of (C60)n and C60: the first one is higher than the n-fold mean polarizability of the original fullerene. This phenomenon is used in the design of novel fullerene compounds and the understanding of its properties but still has no chemical rationalization. In the present work, we studied the distributed polarizability of (C60)2 and isomeric (C60)3 nanoaggregates with the density functional theory method. We found that polarizability exaltation increases with the size of the nanostructure and originates from the response of the sp2-hybridized carbon atoms to the external electric field. The highest contributions to the dipole polarizability of (C60)2 and (C60)3 come from the most remote atoms of the marginal fullerene cores. The sp3-hybridized carbon atoms of cyclobutane bridges negligibly contribute to the molecular property. A similar major contribution to the molecular polarizability from the marginal atoms is observed for related carbon nanostructures isomeric to (C60)2 (tubular fullerene and nanopeanut). Additionally, we discuss the analogy between the polarizability exaltation of covalently bonded (C60)n and the increase in the polarizability found in experiments on fullerene nanoclusters/films as compared with the isolated molecules.
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2
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Yamada M, Kurihara Y, Koizumi M, Tsuji K, Maeda Y, Suzuki M. Understanding the Nature and Strength of Noncovalent Face‐to‐Face Arene–Fullerene Interactions. Angew Chem Int Ed Engl 2022; 61:e202212279. [DOI: 10.1002/anie.202212279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Indexed: 11/07/2022]
Affiliation(s)
- Michio Yamada
- Department of Chemistry Tokyo Gakugei University Nukuikitamachi 4-1-1, Koganei Tokyo 184-8501 Japan
| | - Yukiyo Kurihara
- Department of Chemistry Tokyo Gakugei University Nukuikitamachi 4-1-1, Koganei Tokyo 184-8501 Japan
| | - Masaaki Koizumi
- Department of Chemistry Tokyo Gakugei University Nukuikitamachi 4-1-1, Koganei Tokyo 184-8501 Japan
| | - Kasumi Tsuji
- Department of Chemistry Tokyo Gakugei University Nukuikitamachi 4-1-1, Koganei Tokyo 184-8501 Japan
| | - Yutaka Maeda
- Department of Chemistry Tokyo Gakugei University Nukuikitamachi 4-1-1, Koganei Tokyo 184-8501 Japan
| | - Mitsuaki Suzuki
- Department of Chemistry Josai University Sakado Saitama 350-0295 Japan
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3
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Yamada M, Kurihara Y, Koizumi M, Tsuji K, Maeda Y, Suzuki M. Understanding the Nature and Strength of Noncovalent Face‐to‐Face Arene–Fullerene Interactions. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202212279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Michio Yamada
- Tokyo Gakugei University Department of Chemistry 4-1-1 Nukuikitamachi 184-8501 Koganei, Tokyo JAPAN
| | - Yukiyo Kurihara
- Tokyo Gakugei University: Tokyo Gakugei Daigaku Department of Chemistry JAPAN
| | - Masaaki Koizumi
- Tokyo Gakugei University: Tokyo Gakugei Daigaku Department of Chemistry JAPAN
| | - Kasumi Tsuji
- Tokyo Gakugei University: Tokyo Gakugei Daigaku Department of Chemistry JAPAN
| | - Yutaka Maeda
- Tokyo Gakugei University: Tokyo Gakugei Daigaku Department of Chemistry JAPAN
| | - Mitsuaki Suzuki
- Josai University: Josai Daigaku Department of Chemistry JAPAN
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4
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Xie H, Gunawardana VWL, Finnegan TJ, Xie W, Badjić JD. Picking on Carbonate: Kinetic Selectivity in the Encapsulation of Anions. Angew Chem Int Ed Engl 2022; 61:e202116518. [PMID: 35038355 DOI: 10.1002/anie.202116518] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Indexed: 12/21/2022]
Abstract
Supramolecular hosts bind to inorganic anions at a fast rate and select them in proportion with thermodynamic stability of the corresponding [anion⊂host] complexes, forming in a reversible manner. In this study, we describe the action of hexapodal capsule 1 and its remarkable ability to select anions based on a large span of rates by which they enter this host. The thermodynamic affinity of 1 toward eighteen anions extends over eight orders of magnitude (0<Ka <108 M-1 ; 1 H NMR spectroscopy). The capsule would retain CO3 2- (Ka =107 M-1 ) for hours in the presence of eleven competing anions, including stronger binding SO4 2- , HAsO4 2- and HPO4 2- (Ka =107 -108 M-1 ). The observed selection resulted from 1 possessing narrow apertures (ca. 3×6 Å) comparable in size to anions (d=3.5-7.1 Å) slowing down the encapsulation to last from seconds to days. The unorthodox mode of action of 1 sets the stage for creating hosts that pick anions by their ability to access the host.
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Affiliation(s)
- Han Xie
- Department of Chemistry & Biochemistry, The Ohio State University, 100 West 18th Avenue, Columbus, OH 43210, USA
| | | | - Tyler J Finnegan
- Department of Chemistry & Biochemistry, The Ohio State University, 100 West 18th Avenue, Columbus, OH 43210, USA
| | - William Xie
- Department of Chemistry & Biochemistry, The Ohio State University, 100 West 18th Avenue, Columbus, OH 43210, USA
| | - Jovica D Badjić
- Department of Chemistry & Biochemistry, The Ohio State University, 100 West 18th Avenue, Columbus, OH 43210, USA
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5
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Maynard JRJ, Galmés B, Stergiou AD, Symes MD, Frontera A, Goldup SM. Anion-π Catalysis Enabled by the Mechanical Bond. Angew Chem Int Ed Engl 2022; 61:e202115961. [PMID: 35040543 PMCID: PMC9303940 DOI: 10.1002/anie.202115961] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Indexed: 12/13/2022]
Abstract
We report a series of rotaxane‐based anion–π catalysts in which the mechanical bond between a bipyridine macrocycle and an axle containing an NDI unit is intrinsic to the activity observed, including a [3]rotaxane that catalyses an otherwise disfavoured Michael addition in >60 fold selectivity over a competing decarboxylation pathway that dominates under Brønsted base conditions. The results are rationalized by detailed experimental investigations, electrochemical and computational analysis.
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Affiliation(s)
- John R J Maynard
- Chemistry, University of Southampton, Highfield, Southampton, S017 1BJ, UK
| | - Bartomeu Galmés
- Department of Chemistry, Universitat de les Illes Balears, Crta de Valldemossa km 7.5, 07122, Palma de Mallorca, Baleares, Spain
| | - Athanasios D Stergiou
- WestCHEM School of Chemistry, University of Glasgow, Joseph Black Building, University Avenue, Glasgow, G12 8QQ, UK
| | - Mark D Symes
- WestCHEM School of Chemistry, University of Glasgow, Joseph Black Building, University Avenue, Glasgow, G12 8QQ, UK
| | - Antonio Frontera
- Department of Chemistry, Universitat de les Illes Balears, Crta de Valldemossa km 7.5, 07122, Palma de Mallorca, Baleares, Spain
| | - Stephen M Goldup
- Chemistry, University of Southampton, Highfield, Southampton, S017 1BJ, UK
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6
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Maynard JRJ, Galmés B, Stergiou A, Symes M, Frontera A, Goldup SM. Anion‐π Catalysis Enabled by the Mechanical Bond. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202115961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
| | | | | | - Mark Symes
- University of Glasgow Chemistry UNITED KINGDOM
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7
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Badjic JD, Xie H, Gunawardana VWL, Finnegan TJ, Xie W, Badjić JD. Picking on Carbonate: Kinetic Selectivity in the Encapsulation of Anions. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202116518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Jovica D Badjic
- Ohio State University Department of Chemistry 100 W. 18th Avenue 43210 Columbus UNITED STATES
| | - Han Xie
- The Ohio State University Chemistry and Biochemistry UNITED STATES
| | | | | | - William Xie
- The Ohio State University Chemistry and Biochemistry UNITED STATES
| | - Jovica D. Badjić
- The Ohio State University Chemistry and Biochemistry UNITED STATES
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8
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Luo N, Ao YF, Wang DX, Wang QQ. Putting Anion-π Interactions at Work for Catalysis. Chemistry 2021; 28:e202103303. [PMID: 34658085 DOI: 10.1002/chem.202103303] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2021] [Indexed: 12/21/2022]
Abstract
Since its discovery two decades ago, anion-π interaction has been increasingly recognized as an important driving force. Extensive theoretical and experimental efforts on the ground-state anion-π binding and recognition have laid the bases for exploring its relevance in catalysis. Accordingly, the concept of "anion-π catalysis" that employing an electron-deficient π surface (π-acidic surface) for anionic reaction intermediate and transition state stabilization has emerged. This article shortly reviews the emergence and development of this concept, aiming to provide an emphasis on the general concept and key progress in this exciting area. To highlight the essential contribution of anion-π interactions, the contents are organized according to their role engaged in catalytic process, for example from both ground-state and transition-state stabilization to solely transition-state stabilization, mainly by a single π-face, and to cooperative π-face activation. A concluding remark and outlook on future development of this field is also given.
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Affiliation(s)
- Na Luo
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Yu-Fei Ao
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - De-Xian Wang
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Qi-Qiang Wang
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
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9
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Anila S, Suresh CH. Imidazolium-fulleride ionic liquids - a DFT prediction. Phys Chem Chem Phys 2021; 23:20086-20094. [PMID: 34515268 DOI: 10.1039/d1cp03455c] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Ionic liquids (ILs) exhibit tunable physicochemical properties due to the flexibility of being able to select their cation-anion combination from a large pool of ions. The size of the ions controls the properties of the ILs in the range from ionic to molecular, and thus large ions play an important role in regulating the melting temperature and viscosity. Here, we show that the exohedral addition of anionic X- moieties to C60 (X = H, F, OH, CN, NH2, and NO2) is a thermodynamically viable process for creating large X-fulleride anions (C60X)-. The addition of X- to C60 is modelled by locating the transition state for the reaction between C60 and 1,3-dimethyl-2X-imidazole (IMX) at the M06L/6-311++G(d,p)//M06L/6-31G(d,p) level. The reaction yields the ion-pair complex IM+⋯(C60X)- for X = H, F, OH, CN, NH2, and NO2 and the ordered pair of (activation free energy, reaction free energy) is found to be (14.5, 1.1), (6.1, 3.1), (16.7, 2.3), (14.7, -7.9), (27.9, 0.5) and (11.9, 12.4), respectively. The low barrier of the reactions suggests their feasibility. The reaction is slightly endergonic for X = H, F, OH, and NH2, while X = CN shows a significant exergonic character. The X-fulleride formation is not observed when X = Cl and Br. The ion-pair interactions (Eion-pair) observed for IM+⋯(C60X)- range from -64.0 to -73.0 kcal mol-1, which is substantially lower (∼10%) than the typically reported values for imidazolium-based ionic liquids such as [EMIm]+[trz]-, [EMIm]+[dc]-, [EMIm]+[dtrz]-, and [EMIm]+[NH2tz]-. The quantum theory of atoms in molecules (QTAIM) analysis showed that the C-X bonding in (C60X)- is covalent, while that in (IM+⋯X-)⋯C60 (for X = Cl and Br) is non-covalent. Furthermore, molecular electrostatic potential (MESP) analysis showed that the X-fulleride could behave as a large spherical anion due to the delocalization of the excess electron in the system over the entire carbon framework. The large anionic character of the X-fulleride is also revealed by the identification of several close lying local energy minima for the IM+⋯(C60X)- ion-pair. The low Eion-pair value, the significant contribution of dispersion to the Eion-pair and the spherical nature of the anion predict low-melting point and highly viscous IL formation from X-fullerides and the imidazolium cation.
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Affiliation(s)
- Sebastian Anila
- Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology, Thiruvananthapuram, Kerala, 695 019, India. .,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Cherumuttathu H Suresh
- Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology, Thiruvananthapuram, Kerala, 695 019, India. .,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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10
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Gong H, Zhang C, Ogaki T, Inuzuka H, Hashizume D, Miyajima D. Azacalix[3]triazines: A Substructure of Triazine‐Based Graphitic Carbon Nitride Featuring Anion‐π Interactions. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202104467] [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]
Affiliation(s)
- Hao Gong
- RIKEN Center for Emergent Matter Science 2-1 Hirosawa Wako Saitama 351-0198 Japan
- Department of Chemistry and Biotechnology School of Engineering The University of Tokyo 7-3-1 Hongo, Bunkyo-ku Tokyo 113-8656 Japan
| | - Cheng Zhang
- Key Laboratory of Green Chemistry and Technology of Ministry of Education College of Chemistry Sichuan University 29 Wangjiang Road Chengdu 610064 P. R. China
| | - Takuya Ogaki
- Department of Applied Chemistry Graduate School of Engineering Osaka Prefecture University 1-1 Gakuen-cho, Naka-ku Sakai Osaka 599-8531 Japan
| | - Hiroyuki Inuzuka
- RIKEN Center for Emergent Matter Science 2-1 Hirosawa Wako Saitama 351-0198 Japan
| | - Daisuke Hashizume
- RIKEN Center for Emergent Matter Science 2-1 Hirosawa Wako Saitama 351-0198 Japan
| | - Daigo Miyajima
- RIKEN Center for Emergent Matter Science 2-1 Hirosawa Wako Saitama 351-0198 Japan
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11
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Murray JS, Politzer P. Can Counter-Intuitive Halogen Bonding Be Coulombic? Chemphyschem 2021; 22:1201-1207. [PMID: 33844430 DOI: 10.1002/cphc.202100202] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Revised: 04/05/2021] [Indexed: 01/14/2023]
Abstract
We use the term "counter-intuitive" to describe an intermolecular interaction in which the electrostatic potentials of the interacting regions of the ground-state molecules have the same sign, both positive or both negative. In the present work, we consider counter-intuitive halogen bonding with nitrogen bases, in which both the halogen σ-hole and the nitrogen lone pair have negative potentials on their molecular surfaces. We show that these interactions can be treated as Coulombic despite the apparent repulsion between the ground-state molecules, provided that both electrostatics and polarization are explicitly taken into account. We demonstrate first that the energies of 20 counter-intuitive interactions with four nitrogen bases can be expressed very well in terms of just two molecular properties: the electrostatic potential of the halogen σ-hole and the average polarizability of the nitrogen base. Then we show that the same two properties can also represent the energies of an expanded data base that includes the 20 counter-intuitive plus an additional 20 weak and moderately-strong intuitive halogen bonding interactions (in which the σ-hole potentials are now positive).
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Affiliation(s)
- Jane S Murray
- Department of Chemistry, University of New Orleans, New Orleans, LA 70148, USA
| | - Peter Politzer
- Department of Chemistry, University of New Orleans, New Orleans, LA 70148, USA
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12
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Gong H, Zhang C, Ogaki T, Inuzuka H, Hashizume D, Miyajima D. Azacalix[3]triazines: A Substructure of Triazine-Based Graphitic Carbon Nitride Featuring Anion-π Interactions. Angew Chem Int Ed Engl 2021; 60:16377-16381. [PMID: 33955147 DOI: 10.1002/anie.202104467] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 05/01/2021] [Indexed: 12/17/2022]
Abstract
Graphitic carbon nitride (GCN) has garnered broad research interest due to its unique catalytic properties. However, GCN, prepared by general methods, possesses myriad structural defects and it has been difficult to elucidate their intrinsic physical properties. We report the development of azacalix[3]triazines (AC3Ts), a substructure of triazine-based GCN (Tz-GCN). Despite the electron-deficient natures of triazine, AC3Ts capture protons as organic superbases. We reveal the unique anion-π interactions of AC3Ts that alters the ionization potentials of AC3Ts. To the best of our knowledge, these features have not yet been recognized for Tz-GCN. These unveiled features of AC3Ts are expected to expand the usage scope and possibilities for GCNs.
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Affiliation(s)
- Hao Gong
- RIKEN Center for Emergent Matter Science, 2-1 Hirosawa, Wako, Saitama, 351-0198, Japan.,Department of Chemistry and Biotechnology, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan
| | - Cheng Zhang
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, P. R. China
| | - Takuya Ogaki
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka, 599-8531, Japan
| | - Hiroyuki Inuzuka
- RIKEN Center for Emergent Matter Science, 2-1 Hirosawa, Wako, Saitama, 351-0198, Japan
| | - Daisuke Hashizume
- RIKEN Center for Emergent Matter Science, 2-1 Hirosawa, Wako, Saitama, 351-0198, Japan
| | - Daigo Miyajima
- RIKEN Center for Emergent Matter Science, 2-1 Hirosawa, Wako, Saitama, 351-0198, Japan
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13
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Stasyuk OA, Stasyuk AJ, Voityuk AA, Solà M. Covalent Functionalization of Single-Walled Carbon Nanotubes by the Bingel Reaction for Building Charge-Transfer Complexes. J Org Chem 2020; 85:11721-11731. [PMID: 32820915 DOI: 10.1021/acs.joc.0c01384] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Functionalization of nanotubes with donor and acceptor partners by the Bingel reaction leads to the formation of charge-transfer dyads, which can operate in organic photovoltaic devices. In this work, we theoretically examine the mechanism of the Bingel reaction for the (6,5)-chiral, (5,5)-armchair, and (9,0)-zigzag single-walled carbon nanotubes (SWCNTs), and demonstrate that the reaction is regioselective and takes place at the perpendicular position of (6,5)- and (5,5)-SWCNTs, and the oblique position of (9,0)-SWCNT. Further, we design computationally the donor-acceptor complexes based on (6,5)-SWCNT coupled with partners of different electronic nature. Analysis of their excited states reveals that efficient photoinduced charge transfer can be achieved in the complexes with π-extended analogue of tetrathiafulvalene (exTTF), zinc tetraphenylporphyrin (ZnTPP), and tetracyanoanthraquinodimethane (TCAQ). The solvent can significantly affect the population of the charge-separated states. Our calculations show that electron transfer (ET) occurs in the normal Marcus regime on a sub-nanosecond time scale in the complexes with exTTF and ZnTPP, and in the inverted Marcus regime on a picosecond time scale in the case of the TCAQ derivative. The ET rate is found to be not very sensitive to the degree of functionalization of the nanotube.
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Affiliation(s)
- Olga A Stasyuk
- Institute of Computational Chemistry and Catalysis, University of Girona, C/ M. Aurèlia Capmany, 69, 17003 Girona, Catalonia, Spain
| | - Anton J Stasyuk
- Institute of Computational Chemistry and Catalysis, University of Girona, C/ M. Aurèlia Capmany, 69, 17003 Girona, Catalonia, Spain
| | - Alexander A Voityuk
- Institute of Computational Chemistry and Catalysis, University of Girona, C/ M. Aurèlia Capmany, 69, 17003 Girona, Catalonia, Spain.,Institució Catalana de Recerca i Estudis Avançats (ICREA), Pg. Lluís Companys 23, 08010 Barcelona, Catalonia, Spain
| | - Miquel Solà
- Institute of Computational Chemistry and Catalysis, University of Girona, C/ M. Aurèlia Capmany, 69, 17003 Girona, Catalonia, Spain
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14
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Yamada M, Narita H, Maeda Y. A Fullerene‐Based Molecular Torsion Balance for Investigating Noncovalent Interactions at the C
60
Surface. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202005888] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Michio Yamada
- Department of Chemistry Tokyo Gakugei University Nukuikitamachi 4-1-1 Koganei Tokyo 184-8501 Japan
| | - Haruna Narita
- Department of Chemistry Tokyo Gakugei University Nukuikitamachi 4-1-1 Koganei Tokyo 184-8501 Japan
| | - Yutaka Maeda
- Department of Chemistry Tokyo Gakugei University Nukuikitamachi 4-1-1 Koganei Tokyo 184-8501 Japan
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15
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Yamada M, Narita H, Maeda Y. A Fullerene-Based Molecular Torsion Balance for Investigating Noncovalent Interactions at the C 60 Surface. Angew Chem Int Ed Engl 2020; 59:16133-16140. [PMID: 32458522 DOI: 10.1002/anie.202005888] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Indexed: 12/12/2022]
Abstract
To investigate the nature and strength of noncovalent interactions at the fullerene surface, molecular torsion balances consisting of C60 and organic moieties connected through a biphenyl linkage were synthesized. NMR and computational studies show that the unimolecular system remains in equilibrium between well-defined folded and unfolded conformers owing to restricted rotation around the biphenyl C-C bond. The energy differences between the two conformers depend on the substituents and is ascribed to differences in the intramolecular noncovalent interactions between the organic moieties and the fullerene surface. Fullerenes favor interacting with the π-faces of benzenes bearing electron-donating substituents. The correlation between the folding free energies and corresponding Hammett constants of the substituents in the arene-containing torsion balances reflects the contributions of the electrostatic interactions and dispersion force to face-to-face arene-fullerene interactions.
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Affiliation(s)
- Michio Yamada
- Department of Chemistry, Tokyo Gakugei University, Nukuikitamachi 4-1-1, Koganei, Tokyo, 184-8501, Japan
| | - Haruna Narita
- Department of Chemistry, Tokyo Gakugei University, Nukuikitamachi 4-1-1, Koganei, Tokyo, 184-8501, Japan
| | - Yutaka Maeda
- Department of Chemistry, Tokyo Gakugei University, Nukuikitamachi 4-1-1, Koganei, Tokyo, 184-8501, Japan
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16
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Paraja M, Matile S. Primary Anion–π Catalysis of Epoxide‐Opening Ether Cyclization into Rings of Different Sizes: Access to New Reactivity. Angew Chem Int Ed Engl 2020; 59:6273-6277. [DOI: 10.1002/anie.202000579] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Indexed: 11/07/2022]
Affiliation(s)
- Miguel Paraja
- Department of Organic ChemistryUniversity of Geneva Geneva Switzerland
| | - Stefan Matile
- Department of Organic ChemistryUniversity of Geneva Geneva Switzerland
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17
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Primary Anion–π Catalysis of Epoxide‐Opening Ether Cyclization into Rings of Different Sizes: Access to New Reactivity. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202000579] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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18
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Yin H, Wang M, Tan LS, Chiang LY. Synthesis and Intramolecular Energy- and Electron-Transfer of 3D-Conformeric Tris(fluorenyl-[60]fullerenylfluorene) Derivatives. Molecules 2019; 24:molecules24183337. [PMID: 31540264 PMCID: PMC6766839 DOI: 10.3390/molecules24183337] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2019] [Revised: 08/30/2019] [Accepted: 09/10/2019] [Indexed: 11/16/2022] Open
Abstract
New 3D conformers were synthesized to show a nanomolecular configuration with geometrically branched 2-diphenylaminofluorene (DPAF-C2M) chromophores using a symmetrical 1,3,5-triaminobenzene ring as the center core for the connection of three fused DPAF-C2M moieties. The design led to a class of cis-cup-tris[(DPAF-C2M)-C60(>DPAF-C9)] 3D conformers with three bisadduct-analogous <C60> cages per nanomolecule facing at the same side of the geometrical molecular cis-cup-shape structure. A sequential synthetic route was described to afford this 3D configurated conformer in a high yield with various spectroscopic characterizations. In principle, a nanostructure with a non-coplanar 3D configuration in design should minimize the direct contact or π-stacking of fluorene rings with each other during molecular packing to the formation of fullerosome array. It may also prevent the self-quenching effect of its photoexcited states in solids. Photophysical properties of this cis-cup-conformer were also investigated.
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Affiliation(s)
- He Yin
- Department of Chemistry, University of Massachusetts Lowell, Lowell, MA 01854, USA.
| | - Min Wang
- Department of Chemistry, University of Massachusetts Lowell, Lowell, MA 01854, USA.
| | - Loon-Seng Tan
- Functional Materials Division, AFRL/RXA, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH 45433, USA.
| | - Long Y Chiang
- Department of Chemistry, University of Massachusetts Lowell, Lowell, MA 01854, USA.
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19
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Buglioni L, Mastandrea MM, Frontera A, Pericàs MA. Anion–π Interactions in Light‐Induced Reactions: Role in the Amidation of (Hetero)aromatic Systems with Activated
N
‐Aryloxyamides. Chemistry 2019; 25:11785-11790. [DOI: 10.1002/chem.201903055] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Indexed: 12/22/2022]
Affiliation(s)
- Laura Buglioni
- Institute of Chemical Research of Catalonia (ICIQ) The Barcelona Institute of Science and Technology Avda. Països Catalans 16 43007 Tarragona Spain
| | - Marco M. Mastandrea
- Institute of Chemical Research of Catalonia (ICIQ) The Barcelona Institute of Science and Technology Avda. Països Catalans 16 43007 Tarragona Spain
| | - Antonio Frontera
- Department de Química Universitat de, les Illes Balears Crta. de Valldemossa km 7.5 07122 Palma de Mallorca Baleares Spain
| | - Miquel A. Pericàs
- Institute of Chemical Research of Catalonia (ICIQ) The Barcelona Institute of Science and Technology Avda. Països Catalans 16 43007 Tarragona Spain
- Departament de Química Inorganica i Orgànica Universitat de Barcelona Martí i Franqués 1–11 08028 Barcelona Spain
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20
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Anstöter CS, Rogers JP, Verlet JRR. Spectroscopic Determination of an Anion−π Bond Strength. J Am Chem Soc 2019; 141:6132-6135. [DOI: 10.1021/jacs.9b01345] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Cate S. Anstöter
- Department of Chemistry, Durham University, Durham DH1 3LE, United Kingdom
| | - Joshua P. Rogers
- Department of Chemistry, Durham University, Durham DH1 3LE, United Kingdom
| | - Jan R. R. Verlet
- Department of Chemistry, Durham University, Durham DH1 3LE, United Kingdom
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21
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Tukhbatullina AA, Khamitov EM, Sabirov DS. Distributed polarizability of fullerene [2+1]-adducts C60X (n = 1 and 2) with symmetric addends X = CH2 and O: A fresh view on the effect of positional isomerism. COMPUT THEOR CHEM 2019. [DOI: 10.1016/j.comptc.2018.12.017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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