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Li C, Manick A, Zhao Y, Liu F, Chatelet B, Rosas R, Siri D, Gigmes D, Monnier V, Charles L, Broggi J, Liu S, Martinez A, Kermagoret A, Bardelang D. Sequential Formation of Heteroternary Cucurbit[10]uril (CB[10]) Complexes. Chemistry 2022; 28:e202201656. [PMID: 35980006 PMCID: PMC9826255 DOI: 10.1002/chem.202201656] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2022] [Indexed: 01/11/2023]
Abstract
The globular and monocationic guest molecule trimethyl-azaphosphatrane (AZAP, a protonated Verkade superbase) was shown to form a host:guest 1 : 1 complex with the cucurbit[10]uril (CB[10]) macrocycle in water. Molecular dynamics calculations showed that CB[10] adopts an 8-shape with AZAP occupying the majority of the internal space, CB[10] contracting around AZAP and leaving a significant part of the cavity unoccupied. This residual space was used to co-include planar and monocationic co-guest (CG) molecules, affording heteroternary CB[10]⋅AZAP⋅CG complexes potentially opening new perspectives in supramolecular chemistry.
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Affiliation(s)
- Chunyang Li
- Aix Marseille Univ, CNRS Centrale Marseille, iSm2 UMR7313, AMUTech13397MarseilleFrance,School of Materials Science and EngineeringSichuan University of Science & EngineeringZigong643000P. R. China,Material Corrosion and Protection Key Laboratory of Sichuan ProvinceSichuan University of Science & EngineeringZigong643000P. R. China
| | - Anne‐Doriane Manick
- Aix Marseille Univ, CNRS Centrale Marseille, iSm2 UMR7313, AMUTech13397MarseilleFrance
| | - Yuxi Zhao
- Aix Marseille Univ, CNRS, ICR, AMUTech13397MarseilleFrance
| | - Fengbo Liu
- School of Chemistry and Chemical EngineeringWuhan University of Science and TechnologyWuhan430081P. R. China
| | - Bastien Chatelet
- Aix Marseille Univ, CNRS Centrale Marseille, iSm2 UMR7313, AMUTech13397MarseilleFrance
| | - Roselyne Rosas
- Aix Marseille Univ, CNRS, SpectropoleFR 1739MarseilleFrance
| | - Didier Siri
- Aix Marseille Univ, CNRS, ICR, AMUTech13397MarseilleFrance
| | - Didier Gigmes
- Aix Marseille Univ, CNRS, ICR, AMUTech13397MarseilleFrance
| | | | | | - Julie Broggi
- Aix Marseille Univ, CNRS, ICR, AMUTech13397MarseilleFrance
| | - Simin Liu
- School of Chemistry and Chemical EngineeringWuhan University of Science and TechnologyWuhan430081P. R. China
| | - Alexandre Martinez
- Aix Marseille Univ, CNRS Centrale Marseille, iSm2 UMR7313, AMUTech13397MarseilleFrance
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2
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Yang X, Cheng Q, Monnier V, Charles L, Karoui H, Ouari O, Gigmes D, Wang R, Kermagoret A, Bardelang D. Guest Exchange by a Partial Energy Ratchet in Water. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202014399] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Xue Yang
- Aix Marseille Univ CNRS ICR Marseille France
| | - Qian Cheng
- State Key Laboratory of Quality Research in Chinese Medicine Institute of Chinese Medical Sciences University of Macau Avenida da Universidade Taipa Macau China
| | - Valerie Monnier
- Aix Marseille Univ CNRS Centrale Marseille, FSCM Spectropole Marseille France
| | | | | | | | | | - Ruibing Wang
- State Key Laboratory of Quality Research in Chinese Medicine Institute of Chinese Medical Sciences University of Macau Avenida da Universidade Taipa Macau China
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3
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Yang X, Cheng Q, Monnier V, Charles L, Karoui H, Ouari O, Gigmes D, Wang R, Kermagoret A, Bardelang D. Guest Exchange by a Partial Energy Ratchet in Water. Angew Chem Int Ed Engl 2021; 60:6617-6623. [DOI: 10.1002/anie.202014399] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 12/20/2020] [Indexed: 01/28/2023]
Affiliation(s)
- Xue Yang
- Aix Marseille Univ CNRS ICR Marseille France
| | - Qian Cheng
- State Key Laboratory of Quality Research in Chinese Medicine Institute of Chinese Medical Sciences University of Macau Avenida da Universidade Taipa Macau China
| | - Valerie Monnier
- Aix Marseille Univ CNRS Centrale Marseille, FSCM Spectropole Marseille France
| | | | | | | | | | - Ruibing Wang
- State Key Laboratory of Quality Research in Chinese Medicine Institute of Chinese Medical Sciences University of Macau Avenida da Universidade Taipa Macau China
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4
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Yang X, Wang R, Kermagoret A, Bardelang D. Oligomeric Cucurbituril Complexes: from Peculiar Assemblies to Emerging Applications. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202004622] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Xue Yang
- Aix Marseille Univ CNRS ICR Marseille France
| | - Ruibing Wang
- State Key Laboratory of Quality Research in Chinese Medicine Institute of Chinese Medical Sciences University of Macau, Taipa Macau China
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Yang X, Wang R, Kermagoret A, Bardelang D. Oligomeric Cucurbituril Complexes: from Peculiar Assemblies to Emerging Applications. Angew Chem Int Ed Engl 2020; 59:21280-21292. [PMID: 32567745 DOI: 10.1002/anie.202004622] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Indexed: 12/16/2022]
Abstract
Proteins are an endless source of inspiration. By carefully tuning the amino-acid sequence of proteins, nature made them evolve from primary to quaternary structures, a property specific to protein oligomers and often crucial to accomplish their function. On the other hand, the synthetic macrocycles cucurbiturils (CBs) have shown outstanding recognition properties in water, and a growing number of (host)n :(guest)n supramolecular polymers involving CBs have been reported. However, the burgeoning field of discrete (n:n) host:guest oligomers has just started to attract attention. While 2:2 complexes are the major oligomers, 3:3 and up to 6:6 oligomers have been described, some associated with emerging applications, specific to the (n:n) arrangements. Design rules to target (n:n) host:guest oligomers are proposed toward new advanced host:guest systems.
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Affiliation(s)
- Xue Yang
- Aix Marseille Univ, CNRS, ICR, Marseille, France
| | - Ruibing Wang
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Taipa, Macau, China
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Yin H, Cheng Q, Rosas R, Viel S, Monnier V, Charles L, Siri D, Gigmes D, Ouari O, Wang R, Kermagoret A, Bardelang D. A Cucurbit[8]uril 2:2 Complex with a Negative pK a Shift. Chemistry 2019; 25:12552-12559. [PMID: 31286592 DOI: 10.1002/chem.201902057] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Revised: 06/13/2019] [Indexed: 12/22/2022]
Abstract
A viologen derivative carrying a benzimidazole group (V-P-I 2+ ; viologen-phenylene-imidazole V-P-I) can be dimerized in water using cucurbit[8]uril (CB[8]) in the form of a 2:2 complex resulting in a negative shift of the guest pKa , by more than 1 pH unit, contrasting with the positive pKa shift usually observed for CB-based complexes. Whereas 2:2 complex protonation is unclear by NMR, silver cations have been used for probing the accessibility of the imidazole groups of the 2:2 complexes. The protonation capacity of the buried imidazole groups is reduced, suggesting that CB[8] could trigger proton release upon 2:2 complex formation. The addition of CB[8] to a solution containing V-P- I3+ indeed released protons as monitored by pH-metry and visualized by a coloured indicator. This property was used to induce a host/guest swapping, accompanied by a proton transfer, between V-P-I 3+ ⋅CB[7] and a CB[8] complex of 1-methyl-4-(4-pyridyl)pyridinium. The origin of this negative pKa shift is proposed to stand in an ideal charge state, and in the position of the two pH-responsive fragments inside the two CB[8] which, alike residues engulfed in proteins, favour the deprotonated form of the guest molecules. Such proton release triggered by a recognition event is reminiscent of several biological processes and may open new avenues toward bioinspired enzyme mimics catalyzing proton transfer or chemical reactions.
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Affiliation(s)
- Hang Yin
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Avenida da Universidade, Taipa, Macau, P. R. China
| | - Qian Cheng
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Avenida da Universidade, Taipa, Macau, P. R. China
| | - Roselyne Rosas
- Aix Marseille Univ, CNRS, Spectropole, FR 1739, Marseille, France
| | - Stéphane Viel
- Aix Marseille Univ, CNRS, ICR, Marseille, France.,Institut Universitaire de France, Paris, France
| | - Valérie Monnier
- Aix Marseille Univ, CNRS, Spectropole, FR 1739, Marseille, France
| | | | - Didier Siri
- Aix Marseille Univ, CNRS, ICR, Marseille, France
| | | | | | - Ruibing Wang
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Avenida da Universidade, Taipa, Macau, P. R. China
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Pazos E, Novo P, Peinador C, Kaifer AE, García MD. Cucurbit[8]uril (CB[8])‐Based Supramolecular Switches. Angew Chem Int Ed Engl 2018; 58:403-416. [DOI: 10.1002/anie.201806575] [Citation(s) in RCA: 96] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Indexed: 01/05/2023]
Affiliation(s)
- Elena Pazos
- Departamento de Química Facultade de Ciencias and Centro de Investigacións Científicas Avanzadas (CICA) Universidade da Coruña 15071, A Coruña Spain
| | - Paula Novo
- Departamento de Química Facultade de Ciencias and Centro de Investigacións Científicas Avanzadas (CICA) Universidade da Coruña 15071, A Coruña Spain
| | - Carlos Peinador
- Departamento de Química Facultade de Ciencias and Centro de Investigacións Científicas Avanzadas (CICA) Universidade da Coruña 15071, A Coruña Spain
| | - Angel E. Kaifer
- Department of Chemistry University of Miami Coral Gables FL 33124 USA
| | - Marcos D. García
- Departamento de Química Facultade de Ciencias and Centro de Investigacións Científicas Avanzadas (CICA) Universidade da Coruña 15071, A Coruña Spain
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8
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Pazos E, Novo P, Peinador C, Kaifer AE, García MD. Supramolekulare Schalter auf der Basis von Cucurbit[8]uril (CB[8]). Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201806575] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Elena Pazos
- Departamento de Química Facultade de Ciencias and Centro de Investigacións Científicas Avanzadas (CICA) Universidade da Coruña 15071, A Coruña Spanien
| | - Paula Novo
- Departamento de Química Facultade de Ciencias and Centro de Investigacións Científicas Avanzadas (CICA) Universidade da Coruña 15071, A Coruña Spanien
| | - Carlos Peinador
- Departamento de Química Facultade de Ciencias and Centro de Investigacións Científicas Avanzadas (CICA) Universidade da Coruña 15071, A Coruña Spanien
| | - Angel E. Kaifer
- Department of Chemistry University of Miami Coral Gables FL 33124 USA
| | - Marcos D. García
- Departamento de Química Facultade de Ciencias and Centro de Investigacións Científicas Avanzadas (CICA) Universidade da Coruña 15071, A Coruña Spanien
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9
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Affiliation(s)
- Stephan Sinn
- Institute of Nanotechnology (INT); Karlsruhe Institute of Technology (KIT); Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Deutschland/Germany
| | - Frank Biedermann
- Institute of Nanotechnology (INT); Karlsruhe Institute of Technology (KIT); Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Deutschland/Germany
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10
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Fukino T, Yamagishi H, Aida T. Redox-Responsive Molecular Systems and Materials. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2017; 29:1603888. [PMID: 27990693 DOI: 10.1002/adma.201603888] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2016] [Revised: 09/15/2016] [Indexed: 06/06/2023]
Abstract
Redox reactions can alter the electronic, optical, and magnetic properties of molecules and their ensembles by adding or removing electrons. Here, the developments made over the past 10 years using molecular events are discussed, such as assembly/disassembly, transformation of ensembles, geometric changes, and molecular motions that are designed to be redox-responsive. Considerable progress has occurred in the application of these events to the realization of electronic memory, color displays, actuators, adhesives, and drug delivery. In these cases, systems behave in either a highly or a poorly correlated manner depending on the number of redox-active units involved, based on the method of integration. One of the great advantages of redox-responsive devices and materials is that they have the potential to be readily integrated into existing electronic technologies.
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Affiliation(s)
- Takahiro Fukino
- Department of Chemistry and Biotechnology, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan
| | - Hiroshi Yamagishi
- Department of Chemistry and Biotechnology, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan
| | - Takuzo Aida
- Department of Chemistry and Biotechnology, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan
- RIKEN Center for Emergent Matter Science, 2-1 Hirosawa, Wako, Saitama, 351-0198, Japan
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11
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Mikulu L, Michalicova R, Iglesias V, Yawer MA, Kaifer AE, Lubal P, Sindelar V. pH Control on the Sequential Uptake and Release of Organic Cations by Cucurbit[7]uril. Chemistry 2017; 23:2350-2355. [DOI: 10.1002/chem.201604417] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Indexed: 11/10/2022]
Affiliation(s)
- Lukas Mikulu
- Department of Chemistry; Masaryk University; Kamenice 5 625 00 Brno Czech Republic
| | - Romana Michalicova
- Department of Chemistry; Masaryk University; Kamenice 5 625 00 Brno Czech Republic
| | - Vivian Iglesias
- Center for Supramolecular Science and Department of Chemistry; University of Miami; Coral Gables FL 33124-0431 USA
| | - Mirza A. Yawer
- Department of Chemistry; Masaryk University; Kamenice 5 625 00 Brno Czech Republic
- RECETOX; Masaryk University; Kamenice 5 625 00 Brno Czech Republic
| | - Angel E. Kaifer
- Center for Supramolecular Science and Department of Chemistry; University of Miami; Coral Gables FL 33124-0431 USA
| | - Premysl Lubal
- Department of Chemistry; Masaryk University; Kamenice 5 625 00 Brno Czech Republic
- Central European Institute of Technology (CEITEC); Masaryk University; Kamenice 5 625 00 Brno Czech Republic
| | - Vladimir Sindelar
- Department of Chemistry; Masaryk University; Kamenice 5 625 00 Brno Czech Republic
- RECETOX; Masaryk University; Kamenice 5 625 00 Brno Czech Republic
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12
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Zhu L, Zhu M, Zhao Y. Controlled Movement of Cucurbiturils in Host-Guest Systems. Chempluschem 2016; 82:30-41. [DOI: 10.1002/cplu.201600309] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2016] [Indexed: 01/18/2023]
Affiliation(s)
- Liangliang Zhu
- State Key Laboratory of Molecular Engineering of Polymers; Department of Macromolecular Science; Fudan University; 220 Handan Road Shanghai 200433 P. R. China
| | - Mingjie Zhu
- State Key Laboratory of Molecular Engineering of Polymers; Department of Macromolecular Science; Fudan University; 220 Handan Road Shanghai 200433 P. R. China
| | - Yanli Zhao
- Division of Chemistry and Biological Chemistry; School of Physical and Mathematical Sciences; Nanyang Technological University; 21 Nanyang Link Singapore 637371 Singapore
- School of Materials Science and Engineering; Nanyang Technological University; 50 Nanyang Avenue Singapore 639798 Singapore
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Datta S, Bhattacharya S. Carbon-Nanotube-Mediated Electrochemical Transition in a Redox-Active Supramolecular Hydrogel Derived from Viologen and an l-Alanine-Based Amphiphile. Chemistry 2016; 22:7524-32. [PMID: 27059107 DOI: 10.1002/chem.201600214] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2016] [Indexed: 12/16/2022]
Abstract
A two-component hydrogelator (16-A)2 -V(2+) , comprising an l-alanine-based amphiphile (16-A) and a redox-active viologen based partner (V(2+) ), is reported. The formation the hydrogel depended, not only on the acid-to-amine stoichiometric ratio, but on the choice of the l-amino acid group and also on the hydrocarbon chain length of the amphiphilic component. The redox responsive property and the electrochemical behavior of this two-component system were further examined by step-wise chemical and electrochemical reduction of the viologen nucleus (V(2+) /V(+) and V(+) /V(0) ). The half-wave reduction potentials (E1/2 ) associated with the viologen ring shifted to more negative values with increasing amine component. This indicates that higher extent of salt formation hinders reduction of the viologen moiety. Interestingly, the incorporation of single-walled carbon nanotubes in the electrochemically irreversible hydrogel (16-A)2 -V(2+) transformed it into a quasi-reversible electrochemical system.
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Affiliation(s)
- Sougata Datta
- Department of Organic Chemistry, Indian Institute of Science, Bangalore, 560012, Karnataka, India.,Director's Research Unit (DRU), Indian Association for the Cultivation of Science, Jadavpur, Kolkata, 700 032, India
| | - Santanu Bhattacharya
- Department of Organic Chemistry, Indian Institute of Science, Bangalore, 560012, Karnataka, India. .,Director's Research Unit (DRU), Indian Association for the Cultivation of Science, Jadavpur, Kolkata, 700 032, India. .,Jawaharlal Nehru Centre for Advanced Scientific Research, Bangalore, 560 064, Jakkur, India.
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14
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Ko YH, Hwang I, Kim H, Kim Y, Kim K. Molecular Pop-up Toy: A Molecular Machine Based on Folding/Unfolding Motion of Alkyl Chains Bound to a Host. Chem Asian J 2014; 10:154-9. [DOI: 10.1002/asia.201402988] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2014] [Indexed: 01/03/2023]
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15
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Wang KP, Guo DS, Zhao HX, Liu Y. Synthesis of Doubly Ethyl-Bridged Bis(p-sulfonatocalix[4]arene) and Its Supramolecular Polymerization with Viologen Dimer. Chemistry 2014; 20:4023-31. [DOI: 10.1002/chem.201303344] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2013] [Indexed: 11/07/2022]
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16
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Liu Y, Yang H, Wang Z, Zhang X. Cucurbit[8]uril-Based Supramolecular Polymers. Chem Asian J 2013; 8:1626-32. [DOI: 10.1002/asia.201300151] [Citation(s) in RCA: 160] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2013] [Indexed: 01/18/2023]
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17
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Jiang S, Liu M, Cui Y, Zou D, Wu Y. Formation and Rupture of a Supramolecular Nanocapsule Triggeredon-off-onSupramolecular Switch for Zn2+. European J Org Chem 2013. [DOI: 10.1002/ejoc.201201416] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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18
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Lei W, Jiang G, Zhou Q, Hou Y, Zhang B, Cheng X, Wang X. Self-Assembly of Anionic Porphyrins and Alkaline or Alkaline Earth Metal Ions Mediated by Cucurbit[7,8]uril. Chemphyschem 2013; 14:1003-8. [DOI: 10.1002/cphc.201201025] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2012] [Indexed: 11/11/2022]
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19
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Yan X, Chi X, Wei P, Zhang M, Huang F. [n]Pseudorotaxanes (n= 2, 3) from Self-Assembly of Two Cryptands and a 1,2-Bis(4-pyridinium)ethane Derivative. European J Org Chem 2012. [DOI: 10.1002/ejoc.201200964] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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20
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Katir N, Majoral JP, El Kadib A, Caminade AM, Bousmina M. Molecular and Macromolecular Engineering with Viologens as Building Blocks: Rational Design of Phosphorus-Viologen Dendritic Structures. European J Org Chem 2011. [DOI: 10.1002/ejoc.201101376] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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21
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Das D, Scherman OA. Cucurbituril: At the Interface of Small Molecule Host-Guest Chemistry and Dynamic Aggregates. Isr J Chem 2011. [DOI: 10.1002/ijch.201100045] [Citation(s) in RCA: 77] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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22
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23
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Sun S, Zhang G, Geng D, Chen Y, Banis M, Li R, Cai M, Sun X. Direct Growth of Single-Crystal Pt Nanowires on Sn@CNT Nanocable: 3D Electrodes for Highly Active Electrocatalysts. Chemistry 2009; 16:829-35. [DOI: 10.1002/chem.200902320] [Citation(s) in RCA: 111] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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24
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Wu J, Isaacs L. Cucurbit[7]uril Complexation Drives Thermaltrans-cis-Azobenzene Isomerization and Enables Colorimetric Amine Detection. Chemistry 2009; 15:11675-80. [DOI: 10.1002/chem.200901522] [Citation(s) in RCA: 87] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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25
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Lee JW, Hwang I, Jeon WS, Ko YH, Sakamoto S, Yamaguchi K, Kim K. Synthetic Molecular Machine Based on Reversible End-to-Interior and End-to-End Loop Formation Triggered by Electrochemical Stimuli. Chem Asian J 2008; 3:1277-83. [DOI: 10.1002/asia.200800054] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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26
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Gadenne B, Semeraro M, Yebeutchou R, Tancini F, Pirondini L, Dalcanale E, Credi A. Electrochemically Controlled Formation/Dissociation of Phosphonate-Cavitand/Methylpyridinium Complexes. Chemistry 2008; 14:8964-8971. [DOI: 10.1002/chem.200800966] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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27
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Rauwald U, Scherman O. Supramolekulare Blockcopolymere mit Cucurbit[8]uril in Wasser. Angew Chem Int Ed Engl 2008. [DOI: 10.1002/ange.200705591] [Citation(s) in RCA: 65] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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28
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Rauwald U, Scherman O. Supramolecular Block Copolymers with Cucurbit[8]uril in Water. Angew Chem Int Ed Engl 2008; 47:3950-3. [DOI: 10.1002/anie.200705591] [Citation(s) in RCA: 279] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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29
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Liu S, Shukla A, Gadde S, Wagner B, Kaifer A, Isaacs L. Ternary Complexes Comprising Cucurbit[10]uril, Porphyrins, and Guests. Angew Chem Int Ed Engl 2008. [DOI: 10.1002/ange.200705346] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Liu S, Shukla A, Gadde S, Wagner B, Kaifer A, Isaacs L. Ternary Complexes Comprising Cucurbit[10]uril, Porphyrins, and Guests. Angew Chem Int Ed Engl 2008; 47:2657-60. [DOI: 10.1002/anie.200705346] [Citation(s) in RCA: 94] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Ling Y, Mague JT, Kaifer AE. Inclusion Complexation of Diquat and Paraquat by the Hosts Cucurbit[7]uril and Cucurbit[8]uril. Chemistry 2007; 13:7908-14. [PMID: 17685378 DOI: 10.1002/chem.200700402] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The binding interactions in aqueous solution between the dicationic guest diquat (DQ(2+)) and the cucurbit[7]uril (CB7) and cucurbit[8]uril (CB8) hosts were investigated by (1)H NMR, UV/Vis, and fluorescence spectroscopy; mass spectrometry; single-crystal X-ray diffraction; and electrochemical techniques. The binding data were compared with previously reported results for the related paraquat guest (PQ(2+)). DQ(2+) was found to bind poorly (K=350 m(-1)) inside CB7 and more effectively (K=4.8 x 10(4) m(-1)) inside CB8. One-electron reduction led to increased binding affinity with both hosts (K(r)=1 x 10(4) m(-1) with CB7 and K(r)=6 x 10(5) m(-1) for CB8). While (1)H NMR spectroscopic data revealed that DQ(2+) is not fully included by CB7, the crystal structure of the CB8DQ(2+) complex-obtained from single-crystal X-ray diffraction-clearly establishes its inclusion nature. Overall, both diquat and its one-electron reduced radical cation are bound more effectively by CB8 than by CB7. In contrast to this, paraquat exhibits selectivity for CB7, but its radical cation forms a highly stable dimer inside CB8. These differences highlight the pronounced sensitivity of cucurbit[n]uril hosts to guest features such as charge, charge distribution and shape.
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Affiliation(s)
- Yonghua Ling
- Center for Supramolecular Science and Department of Chemistry, University of Miami, Coral Gables, FL 33124-0431, USA
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Kim SY, Ko YH, Lee JW, Sakamoto S, Yamaguchi K, Kim K. Toward High-Generation Rotaxane Dendrimers That Incorporate a Ring Component on Every Branch: Noncovalent Synthesis of a Dendritic [10]Pseudorotaxane with 13 Molecular Components. Chem Asian J 2007; 2:747-54. [PMID: 17479998 DOI: 10.1002/asia.200700043] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
By taking advantage of the fact that cucurbit[6]uril (CB[6]) forms exceptionally stable host-guest complexes with protonated amines, and that its homologue CB[8] can encapsulate a pair of electron-rich and electron-deficient guest molecules to form a stable 1:1:1 complex, we synthesized a novel dendritic [10]pseudorotaxane, or second-generation rotaxane dendrimer (from a topological point of view), in which 13 molecular components are held together by noncovalent interactions. A triply branched molecule containing an electron-deficient bipyridinium unit on each branch formed a branched [4]pseudorotaxane with 3 equivalents of CB[8]. Addition of 3 equivalents of 2,6-dihydroxynaphthalene produced a first-generation rotaxane dendrimer, which was characterized by NMR spectroscopy and CSI-MS. The reaction of the branched [4]pseudorotaxane with 3 equivalents of a triply branched molecule that has an electron-donor unit at one arm and CB[6]-containing units at the other two gave the dendritic [10]pseudorotaxane, the structure of which was confirmed by NMR spectroscopy, UV/Vis titration experiments, and CSI-MS.
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Affiliation(s)
- Soo-Young Kim
- National Creative Research Initiative Center for Smart Supramolecules and Department of Chemistry, Pohang University of Science and Technology, San 31 Hyojadong, Pohang 790-784, Republic of Korea
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