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Onaka Y, Sakai R, Fukunaga TM, Ikemoto K, Isobe H. Bayesian Inference for Model Analyses of Supramolecular Complexes: A Case Study with Nanocarbon Hosts. Angew Chem Int Ed Engl 2024; 63:e202405388. [PMID: 38580617 DOI: 10.1002/anie.202405388] [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: 03/19/2024] [Revised: 04/05/2024] [Accepted: 04/05/2024] [Indexed: 04/07/2024]
Abstract
A 126 π-electron nanobowl molecule, phenine tridehydrosumanene, was synthesized in 12 steps through the development of a polygon cyclization strategy that assembled the polygonal precursors by Ni-mediated macrocyclization. The bowl-shaped structure accommodated C70 as a guest at the concave site, and the ball-in-bowl structure was determined by X-ray crystallography. The host-guest equilibrium in solution was studied with titration experiments using isothermal calorimetry, which provided an interesting test case for studying the host-guest stoichiometry. Bayesian inference was introduced for stoichiometric analyses of the equilibrium, and a procedure to estimate the volume of prior probability in the parameter space was developed. The Bayesian procedure functioned as Occam's razor and provided quantitative support for a specific stoichiometry. The method was examined with five host-guest examples comprising nanocarbon hosts, which suggested the versatility of Bayesian inference for studies of supramolecular complexes.
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Affiliation(s)
- Yuzuka Onaka
- Department of Chemistry, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Renki Sakai
- Department of Chemistry, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Toshiya M Fukunaga
- Department of Chemistry, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Koki Ikemoto
- Department of Chemistry, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Hiroyuki Isobe
- Department of Chemistry, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo, 113-0033, Japan
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Ikemoto K, Harada S, Yang S, Matsuno T, Isobe H. A Defective Nanotube Molecule of C 552 H 496 N 24 with Pyridinic and Pyrrolic Nitrogen Atoms. Angew Chem Int Ed Engl 2022; 61:e202114305. [PMID: 34727413 DOI: 10.1002/anie.202114305] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Indexed: 01/05/2023]
Abstract
A 3-nm molecule comprising a cylindrical core and cross-shaped rims was designed and synthesized by developing a modular synthetic route. By using a cyclic precursor from previous studies as a starting material, multiple carbazole units were installed at the rims of the defective cylinder. The defective cylinder was synthetically doped with two types of nitrogen atoms, that is, pyridinic and pyrrolic nitrogen atoms, which resulted in solvatochromic shifts in fluorescence by charge-transfer interactions. The structure of the large, C552 H496 N24 molecule was fully disclosed by crystallographic analyses, and the unique helical arrangement of nitrogen-doped cylinders in the crystal was revealed.
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Affiliation(s)
- Koki Ikemoto
- Department of Chemistry, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Shotaro Harada
- Department of Chemistry, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Seungmin Yang
- Department of Chemistry, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Taisuke Matsuno
- Department of Chemistry, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Hiroyuki Isobe
- Department of Chemistry, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo, 113-0033, Japan
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Ikemoto K, Harada S, Yang S, Matsuno T, Isobe H. A Defective Nanotube Molecule of C
552
H
496
N
24
with Pyridinic and Pyrrolic Nitrogen Atoms. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202114305] [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)
- Koki Ikemoto
- Department of Chemistry The University of Tokyo Hongo 7-3-1, Bunkyo-ku Tokyo 113-0033 Japan
| | - Shotaro Harada
- Department of Chemistry The University of Tokyo Hongo 7-3-1, Bunkyo-ku Tokyo 113-0033 Japan
| | - Seungmin Yang
- Department of Chemistry The University of Tokyo Hongo 7-3-1, Bunkyo-ku Tokyo 113-0033 Japan
| | - Taisuke Matsuno
- Department of Chemistry The University of Tokyo Hongo 7-3-1, Bunkyo-ku Tokyo 113-0033 Japan
| | - Hiroyuki Isobe
- Department of Chemistry The University of Tokyo Hongo 7-3-1, Bunkyo-ku Tokyo 113-0033 Japan
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IKEMOTO K, FUKUNAGA TM, ISOBE H. Phenine design for nanocarbon molecules. PROCEEDINGS OF THE JAPAN ACADEMY. SERIES B, PHYSICAL AND BIOLOGICAL SCIENCES 2022; 98:379-400. [PMID: 36216532 PMCID: PMC9614209 DOI: 10.2183/pjab.98.020] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Accepted: 06/09/2022] [Indexed: 06/16/2023]
Abstract
With the name "phenine" given to 1,3,5-trisubstituted benzene for a fundamental trigonal planar unit to weave nanometer-sized networks, a series of curved nanocarbon molecules have been designed and synthesized. Since the 6π-phenine units were amenable to modern biaryl coupling reactions mediated by transition metals, concise syntheses of >400π-nanocarbon molecules were readily achieved. In addition, the phenine design allowed for installing of heteroatoms and/or transition metals doped at specific positions of the large π-systems of the nanocarbon molecules. Fundamental tools were also developed to specify and describe the locations of defects/dopants, quantify pyramidalizations of trigonal panels and estimate molecular Gauss curvatures of the discrete surface. Unique features of phenine nanocarbons, such as stereoisomerism, entropy-driven molecular assembly and effects of dopants on electronic/magnetic characteristics, were revealed during the first half-decade of investigations.
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Affiliation(s)
- Koki IKEMOTO
- Department of Chemistry, The University of Tokyo, Tokyo, Japan
| | | | - Hiroyuki ISOBE
- Department of Chemistry, The University of Tokyo, Tokyo, Japan
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Li K, Xu Z, Xu J, Weng T, Chen X, Sato S, Wu J, Sun Z. Overcrowded Ethylene-Bridged Nanohoop Dimers: Regioselective Synthesis, Multiconfigurational Electronic States, and Global Hückel/Möbius Aromaticity. J Am Chem Soc 2021; 143:20419-20430. [PMID: 34817177 DOI: 10.1021/jacs.1c10170] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The design and preparation of molecular systems with multiple geometric and electronic configurations are the cornerstones for multifunctional materials with stimuli-responsive behaviors. We describe here the regioselective and facile synthesis of two types of overcrowded ethylene-bridged nanohoop dimers, with folded and twisted geometric structures as well as closed-shell, diradical and dication electronic structures. The strained nanohoop structures have a profound effect on the overall molecular and electronic configurations, which resulted in the destabilized diradical state. X-ray crystallographic analysis revealed the folded molecular geometry for the neutral species and twisted geometry for the dication species. The unique molecular dynamics, optical properties, and dynamic redox properties were disclosed in the solution phase by spectroscopic and electrochemical methods. Furthermore, the global Hückel and Möbius aromaticity were revealed by a combination of experimental and theoretical approaches. Our studies shed light on the design of nanohoop-incorporated multiconfigurational materials with unique topologies and functions.
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Affiliation(s)
- Ke Li
- Institute of Molecular Plus, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Tianjin University, 92 Weijin Road, Tianjin 300072, China
| | - Zhuofan Xu
- Institute of Molecular Plus, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Tianjin University, 92 Weijin Road, Tianjin 300072, China
| | - Jun Xu
- Health Science Platform, Tianjin University, 92 Weijin Road, Tianjin 300072, China
| | - Taoyu Weng
- Institute of Molecular Plus, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Tianjin University, 92 Weijin Road, Tianjin 300072, China
| | - Xing Chen
- Institute of Molecular Plus, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Tianjin University, 92 Weijin Road, Tianjin 300072, China
| | - Sota Sato
- Department of Applied Chemistry, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Jishan Wu
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543
| | - Zhe Sun
- Institute of Molecular Plus, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Tianjin University, 92 Weijin Road, Tianjin 300072, China
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Yang S, Miyachi A, Matsuno T, Muto H, Sasakawa H, Ikemoto K, Isobe H. Metal-Templated Oligomeric Macrocyclization via Coupling for Metal-Doped π-Systems. J Am Chem Soc 2021; 143:15017-15021. [PMID: 34491044 DOI: 10.1021/jacs.1c08712] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A method for the synthesis of metal-doped aromatic macrocycles has been developed. The method, i.e., metal-templated oligomeric macrocyclization via coupling, adopts Ni as the template and assembles five pyridine units via a Ni-mediated coupling reaction to form aryl-aryl linkages. A pentameric oligopyridyl macrocycle was selectively obtained in good yield, and the reaction was also applicable to a gram-scale synthesis. The pentameric oligopyridyl macrocycle captured d8-Ni(II) at the center to form a paramagnetic pentagonal-bipyramidal complex. The method was applied to the synthesis of a large π-molecule to afford a nanometer-sized, bowl-shaped molecule having a unique combination of 120π and 8d electrons.
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Affiliation(s)
- Seungmin Yang
- Department of Chemistry, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Akira Miyachi
- Department of Chemistry, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Taisuke Matsuno
- Department of Chemistry, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Hitomi Muto
- JEOL Resonance Inc., Musashino 3-1-2, Akishima-shi, Tokyo 196-8558, Japan
| | - Hiroaki Sasakawa
- JEOL Resonance Inc., Musashino 3-1-2, Akishima-shi, Tokyo 196-8558, Japan
| | - Koki Ikemoto
- Department of Chemistry, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Hiroyuki Isobe
- Department of Chemistry, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-0033, Japan
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Fukunaga TM, Sawabe C, Matsuno T, Takeya J, Okamoto T, Isobe H. Manipulations of Chiroptical Properties in Belt‐Persistent Cycloarylenes via Desymmetrization with Heteroatom Doping. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202106992] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Toshiya M. Fukunaga
- Department of Chemistry The University of Tokyo Hongo 7-3-1, Bunkyo-ku Tokyo 113-0033 Japan
| | - Chizuru Sawabe
- Material Innovation Research Center (MIRC) and Department of Advanced Materials Science Graduate School of Frontier Sciences The University of Tokyo Kashiwanoha 5-1-5, Kashiwa Chiba 277–8561 Japan
| | - Taisuke Matsuno
- Department of Chemistry The University of Tokyo Hongo 7-3-1, Bunkyo-ku Tokyo 113-0033 Japan
| | - Jun Takeya
- Material Innovation Research Center (MIRC) and Department of Advanced Materials Science Graduate School of Frontier Sciences The University of Tokyo Kashiwanoha 5-1-5, Kashiwa Chiba 277–8561 Japan
| | - Toshihiro Okamoto
- Material Innovation Research Center (MIRC) and Department of Advanced Materials Science Graduate School of Frontier Sciences The University of Tokyo Kashiwanoha 5-1-5, Kashiwa Chiba 277–8561 Japan
| | - Hiroyuki Isobe
- Department of Chemistry The University of Tokyo Hongo 7-3-1, Bunkyo-ku Tokyo 113-0033 Japan
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Fukunaga TM, Sawabe C, Matsuno T, Takeya J, Okamoto T, Isobe H. Manipulations of Chiroptical Properties in Belt-Persistent Cycloarylenes via Desymmetrization with Heteroatom Doping. Angew Chem Int Ed Engl 2021; 60:19097-19101. [PMID: 34129256 DOI: 10.1002/anie.202106992] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Revised: 06/14/2021] [Indexed: 11/08/2022]
Abstract
A desymmetrization strategy has been devised in the design of molecular cylinders to maximize the dissymmetry factor relevant to circularly polarized light. Although the highest dissymmetry factor of organic molecules was previously achieved with a chiral belt-persistent cycloarylene having magnetic and electric transition dipole moments in parallel, we noticed that an unbalanced magnitude of two moments was detrimental for higher dissymmetry factors. In this study, a molecular cylinder was desymmetrized by arraying doped and undoped panels via stereoselective cross-coupling macrocyclization. The desymmetrization succeeded in balancing two moments by reducing the electric transition moment at the global minimum but failed to maximize the dissymmetry factor. Structural studies revealed that the dissymmetry factor is sensitive to subtle structural fluctuations, while the rotatory strength is not affected. This study is important for the development of chiroptical materials.
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Affiliation(s)
- Toshiya M Fukunaga
- Department of Chemistry, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Chizuru Sawabe
- Material Innovation Research Center (MIRC) and Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwanoha 5-1-5, Kashiwa, Chiba, 277-8561, Japan
| | - Taisuke Matsuno
- Department of Chemistry, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Jun Takeya
- Material Innovation Research Center (MIRC) and Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwanoha 5-1-5, Kashiwa, Chiba, 277-8561, Japan
| | - Toshihiro Okamoto
- Material Innovation Research Center (MIRC) and Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwanoha 5-1-5, Kashiwa, Chiba, 277-8561, Japan
| | - Hiroyuki Isobe
- Department of Chemistry, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo, 113-0033, Japan
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Ikemoto K, Isobe H. Geodesic Phenine Frameworks. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2021. [DOI: 10.1246/bcsj.20200284] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Koki Ikemoto
- Department of Chemistry, The University of Tokyo, Hongo, Tokyo 113-0033, Japan
| | - Hiroyuki Isobe
- Department of Chemistry, The University of Tokyo, Hongo, Tokyo 113-0033, Japan
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Ineffective OH Pinning of the Flipping Dynamics of a Spherical Guest within a Tight‐Fitting Tube. Angew Chem Int Ed Engl 2020; 59:14570-14576. [DOI: 10.1002/anie.202005538] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Revised: 05/29/2020] [Indexed: 01/27/2023]
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Matsuno T, Someya M, Sato S, Maeda S, Isobe H. Ineffective OH Pinning of the Flipping Dynamics of a Spherical Guest within a Tight‐Fitting Tube. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202005538] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Taisuke Matsuno
- Department of Chemistry The University of Tokyo Hongo, Bunkyo-ku Tokyo 113-0033 Japan
| | - Maki Someya
- Department of Chemistry The University of Tokyo Hongo, Bunkyo-ku Tokyo 113-0033 Japan
| | - Sota Sato
- Department of Chemistry The University of Tokyo Hongo, Bunkyo-ku Tokyo 113-0033 Japan
| | - Satoshi Maeda
- Department of Chemistry and Institute for Chemical Reaction Design and Discovery (WPI-ICReDD) Hokkaido University Kita 10, Nishi 8, Kita-ku Sapporo 060-0810 Japan
| | - Hiroyuki Isobe
- Department of Chemistry The University of Tokyo Hongo, Bunkyo-ku Tokyo 113-0033 Japan
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