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Kotera N, Montellano P, Catalán AC, Carrasco-Ruiz A, Cervantes R, Tiburcio J. Correlated translational motions in pseudo-rotaxane complexes controlled by a single chemical stimulus. Org Biomol Chem 2024; 22:1135-1140. [PMID: 38047705 DOI: 10.1039/d3ob01741a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2023]
Abstract
Coordinated motions are essential in the operation of molecular machines. This feature can be achieved by landscaping the energy surface along the movement coordinates. Herein, we present an approach of using a single stimulus to modify the free energy curve describing the threading and shuttling of a ring along a linear molecule. This approach has been realized by locating two identical ring-binding sites near the axle termini.
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Affiliation(s)
- Naoko Kotera
- Department of Chemistry, Center for Research and Advanced Studies (Cinvestav), Avenida IPN 2508, Mexico City, 07360, Mexico.
| | - Pilar Montellano
- Department of Chemistry, Center for Research and Advanced Studies (Cinvestav), Avenida IPN 2508, Mexico City, 07360, Mexico.
| | - Aldo C Catalán
- Department of Chemistry, Center for Research and Advanced Studies (Cinvestav), Avenida IPN 2508, Mexico City, 07360, Mexico.
| | - Anayeli Carrasco-Ruiz
- Facultad de Ciencias Básicas, Ingeniería y Tecnología, Universidad Autónoma de Tlaxcala, Apizaco 90341, Tlaxcala, Mexico
| | - Ruy Cervantes
- Department of Chemistry, Center for Research and Advanced Studies (Cinvestav), Avenida IPN 2508, Mexico City, 07360, Mexico.
| | - Jorge Tiburcio
- Department of Chemistry, Center for Research and Advanced Studies (Cinvestav), Avenida IPN 2508, Mexico City, 07360, Mexico.
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Kato K, Fa S, Ohtani S, Shi TH, Brouwer AM, Ogoshi T. Noncovalently bound and mechanically interlocked systems using pillar[ n]arenes. Chem Soc Rev 2022; 51:3648-3687. [PMID: 35445234 DOI: 10.1039/d2cs00169a] [Citation(s) in RCA: 38] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Pillar[n]arenes are pillar-shaped macrocyclic compounds owing to the methylene bridges linking the para-positions of the units. Owing to their unique pillar-shaped structures, these compounds exhibit various excellent properties compared with other cyclic host molecules, such as versatile functionality using various organic synthesis techniques, substituent-dependent solubility, cavity-size-dependent host-guest properties in organic media, and unit rotation along with planar chiral inversion. These advantages have enabled the high-yield synthesis and rational design of pillar[n]arene-based mechanically interlocked molecules (MIMs). In particular, new types of pillar[n]arene-based MIMs that can dynamically convert between interlocked and unlocked states through unit rotation have been produced. The highly symmetrical pillar-shaped structures of pillar[n]arenes result in simple NMR spectra, which are useful for studying the motion of pillar[n]arene wheels in MIMs and creating sophisticated MIMs with higher-order structures. The creation and application of polymeric MIMs based on pillar[n]arenes is also discussed.
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Affiliation(s)
- Kenichi Kato
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto, 615-8510, Japan.
| | - Shixin Fa
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto, 615-8510, Japan.
| | - Shunsuke Ohtani
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto, 615-8510, Japan.
| | - Tan-Hao Shi
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto, 615-8510, Japan.
| | - Albert M Brouwer
- van't Hoff Institute for Molecular Sciences, University of Amsterdam, P.O. Box 94157, 1090 GD Amsterdam, The Netherlands.
| | - Tomoki Ogoshi
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto, 615-8510, Japan. .,WPI Nano Life Science Institute, Kanazawa University, Kakuma-machi, Kanazawa, 920-1192, Japan
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Zhang D, Cheng J, Wei L, Song W, Wang L, Tang H, Cao D. Host-Guest Complexation of Monoanionic and Dianionic Guests with a Polycationic Pillararene Host: Same Two-Step Mechanism but Striking Difference in Rate upon Inclusion. J Phys Chem Lett 2020; 11:2021-2026. [PMID: 32091223 DOI: 10.1021/acs.jpclett.0c00277] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Supramolecular dynamic studies provide the most direct information to elucidate the binding mechanisms of the systems and yet are underdeveloped in pillararene chemistry. Herein, we describe the first real-time study on the binding dynamics of a water-soluble per-substituted pillar[5]arene (H1) with pentanesulfonate (G1) and butane-1,4-disulfonate (G2). Both the host-guest complexes were formed via a two-step process. The first step, equilibrated within 1 ms for both guests, was associated with the formation of a 1:1 exclusion complex, and the second step was the conversion of this exclusion complex to the inclusion complex. Threading and dethreading processes in the second step for G2 were at least a million times slower than for G1. Kinetics results reveal that for H1, complexation with a charged guest may follow the same "two-step" mechanism regardless of the number of charged moieties in the guests and the rate of the complexation. This study may advance the mechanistic understanding necessary for further development of functional supramolecular systems.
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Affiliation(s)
- Dejun Zhang
- State Key Laboratory of Luminescent Materials and Devices, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Jian Cheng
- State Key Laboratory of Luminescent Materials and Devices, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Longmeng Wei
- School of Chemical Engineering and Light Industry, Analysis and Test Center, Guangdong University of Technology, Guangzhou 510006, China
| | - Wei Song
- School of Chemical Engineering and Light Industry, Analysis and Test Center, Guangdong University of Technology, Guangzhou 510006, China
| | - Lingyun Wang
- State Key Laboratory of Luminescent Materials and Devices, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Hao Tang
- State Key Laboratory of Luminescent Materials and Devices, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Derong Cao
- State Key Laboratory of Luminescent Materials and Devices, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
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Ogoshi T, Sueto R, Yagyu M, Kojima R, Kakuta T, Yamagishi TA, Doitomi K, Tummanapelli AK, Hirao H, Sakata Y, Akine S, Mizuno M. Molecular weight fractionation by confinement of polymer in one-dimensional pillar[5]arene channels. Nat Commun 2019; 10:479. [PMID: 30696824 PMCID: PMC6351637 DOI: 10.1038/s41467-019-08372-1] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2018] [Accepted: 01/03/2019] [Indexed: 11/16/2022] Open
Abstract
Confinement of polymers in nano-spaces can induce unique molecular dynamics and properties. Here we show molecular weight fractionation by the confinement of single polymer chains of poly(ethylene oxide) (PEO) in the one-dimensional (1D) channels of crystalline pillar[5]arene. Pillar[5]arene crystals are activated by heating under reduced pressure. The activated crystals are immersed in melted PEO, causing the crystals to selectively take up PEO with high mass fraction. The high mass fractionation is caused by the greater number of attractive CH/π interactions between PEO C-H groups and the π-electron-rich 1D channel of the pillar[5]arene with increasing PEO chain length. The molecular motion of the confined PEO (PEO chain thickness of ~3.7 Å) in the 1D channel of pillar[5]arenes (diameter of ~4.7 Å) is highly restricted compared with that of neat PEO. Confinement of polymers in nano-spaces can induce unique molecular dynamics and properties. Here the authors show high mass fractionation by the confinement of single polymer chains of poly(ethylene oxide) in the one-dimensional channels of crystalline pillar[5]arene.
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Affiliation(s)
- Tomoki Ogoshi
- Graduate School of Natural Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa, 920-1192, Japan. .,WPI Nano Life Science Institute, Kanazawa University, Kakuma-machi, Kanazawa, 920-1192, Japan. .,Japan Science and Technology Agency (JST), Precursory Research for Embryonic Science and Technology (PRESTO), 4-1-8 Honcho, Kawaguchi, Saitama, 332-0012, Japan.
| | - Ryuta Sueto
- Graduate School of Natural Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa, 920-1192, Japan
| | - Masafumi Yagyu
- Graduate School of Natural Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa, 920-1192, Japan
| | - Ryosuke Kojima
- Graduate School of Natural Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa, 920-1192, Japan
| | - Takahiro Kakuta
- Graduate School of Natural Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa, 920-1192, Japan.,WPI Nano Life Science Institute, Kanazawa University, Kakuma-machi, Kanazawa, 920-1192, Japan
| | - Tada-Aki Yamagishi
- Graduate School of Natural Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa, 920-1192, Japan
| | - Kazuki Doitomi
- Department of Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China
| | - Anil Kumar Tummanapelli
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore
| | - Hajime Hirao
- Japan Science and Technology Agency (JST), Precursory Research for Embryonic Science and Technology (PRESTO), 4-1-8 Honcho, Kawaguchi, Saitama, 332-0012, Japan.,Department of Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China
| | - Yoko Sakata
- Graduate School of Natural Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa, 920-1192, Japan.,WPI Nano Life Science Institute, Kanazawa University, Kakuma-machi, Kanazawa, 920-1192, Japan
| | - Shigehisa Akine
- Graduate School of Natural Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa, 920-1192, Japan.,WPI Nano Life Science Institute, Kanazawa University, Kakuma-machi, Kanazawa, 920-1192, Japan
| | - Motohiro Mizuno
- Graduate School of Natural Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa, 920-1192, Japan
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