1
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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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2
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Zhou JL, Li YH, Zhang YM, Chen L, Liu Y. Enhanced molecular binding affinity toward aromatic dications by anthracene-derived crown ethers in water. Org Biomol Chem 2022; 21:107-114. [PMID: 36484413 DOI: 10.1039/d2ob02010f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The pursuit of high molecular binding affinity using conventional crown ethers in water remains a challenging task in the field of supramolecular chemistry and may hold great promise in the creation of advanced biocompatible nanoconstructs. In this work, the molecular binding strength toward a series of structurally relevant cationic guests has been greatly enhanced by tetrasulfonated 1,5-dianthracenyl-42-crown-10 and as investigated by means of 1H NMR, UV-vis, and fluorescence spectroscopy, the host-guest association constants can reach up to 108 M-1 order of magnitude in aqueous solution. X-ray crystal diffraction analysis further demonstrates that the aromatic dication can be tightly encapsulated in the ring of anthracene-derived crown ether via multiple π-stacking and electrostatic interactions. Meanwhile, the obtained association constants are remarkably higher than the ones in the cases of the known benzene- and naphthalene-derived sulfonated crown ethers, substantiating that the appropriate extension of π-conjugation in the molecular skeleton of crown ether is a feasible method in attaining a highly affiliative host-guest complex. Taken together, our results indicate that the anthracene-based sulfonated crown ether can be developed as a new family of water-soluble macrocyclic receptors in the fabrication of functional nanoarchitectures.
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Affiliation(s)
- Jia-Liang Zhou
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P. R. China.
| | - Yan-Hong Li
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P. R. China.
| | - Ying-Ming Zhang
- College of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, P. R. China.
| | - Ling Chen
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P. R. China.
| | - Yu Liu
- College of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, P. R. China.
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3
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Woźny M, Trzybiński D, Dąbrowa K, Narodowiec J, Woźniak K. Monosulfonated dibenzo-24-crown-8 and its properties. Org Biomol Chem 2022; 20:5308-5318. [PMID: 35730366 DOI: 10.1039/d2ob00851c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this paper, we describe a method for preparing a monosulfonated dibenzo-24-crown-8 ether, SDB24C8, by direct sulfonation of the parent crown (DB24C8). Since neutral DB24C8 readily interacts with cationic guests, permanently charged SDB24C8 is an advantageous candidate for future supramolecular applications. SDB24C8 can be isolated as a sulfonic acid to be used as it is or converted to a salt of choice. The crystallographic analysis provides the first known host-guest assembly with a DB24C8-based scaffold complexing hydronium and potassium cations. Supramolecular investigations of the interactions of this anionic macrocycle with alkali cations were also performed. According to the expectations, the introduction of the sulfonic group into the DB24C8 scaffold increases the affinities of the receptor. An unusual selectivity of SDB24C8 towards a sodium cation was also observed and further investigated with DFT calculations.
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Affiliation(s)
- M Woźny
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland.
| | - D Trzybiński
- Biological and Chemical Research Centre, Chemistry Department, University of Warsaw, Żwirki i Wigury 101, 02-089 Warszawa, Poland
| | - K Dąbrowa
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland.
| | - J Narodowiec
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland.
| | - K Woźniak
- Biological and Chemical Research Centre, Chemistry Department, University of Warsaw, Żwirki i Wigury 101, 02-089 Warszawa, Poland
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4
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Catalán AC, Loredo AA, Cervantes R, Tiburcio J. An Operative Electrostatic Slipping Mechanism along Macrocycle Flexibility Accelerates Guest Sliding during pseudo-Rotaxane Formation. Chemistry 2022; 11:e202200112. [PMID: 35723426 PMCID: PMC9208289 DOI: 10.1002/open.202200112] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 05/25/2022] [Indexed: 11/28/2022]
Abstract
A pseudo‐rotaxane is a host−guest complex composed of a linear molecule encircled by a macrocyclic ring. These complexes can be assembled by sliding the host over the guest terminal groups. If there is a close match between the molecular volume of the flanking groups on the guest and the cavity size of the macrocycle, the slipping might occur slowly or even become completely hindered. We have previously shown that it is possible to overcome the restraints imposed by steric effects on the sliding process by integrating electrostatic attractive interactions during the slipping step. In this work, we extend our electrostatically assisted slipping approach (EASA) to a new host−guest system featuring a flexible macrocyclic ring and a series of asymmetric guests containing a cyclic tertiary ammonium group. Compelling evidence for pseudo‐rotaxane formation is presented, along with thermodynamic and kinetic data. Experimental results suggests that the higher conformational flexibility of 24‐crown‐8 significantly increases the sliding rate, compared with the more rigid dibenzo‐24‐crown‐8, without affecting complex stability. Furthermore, by combining the EASA and macrocycle flexibility, we were capable to slip a large eight‐membered cyclic group across the 24‐crown‐8 annulus, setting a new limit on the ring molecular size that can pass through a 24‐membered crown ether.
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Affiliation(s)
- Aldo C Catalán
- Department of Chemistry, Center for Research and Advanced Studies (Cinvestav), Avenida IPN 2508, 07360, Mexico City, Mexico
| | - Axel A Loredo
- Department of Chemistry, Center for Research and Advanced Studies (Cinvestav), Avenida IPN 2508, 07360, Mexico City, Mexico
| | - Ruy Cervantes
- Department of Chemistry, Center for Research and Advanced Studies (Cinvestav), Avenida IPN 2508, 07360, Mexico City, Mexico
| | - Jorge Tiburcio
- Department of Chemistry, Center for Research and Advanced Studies (Cinvestav), Avenida IPN 2508, 07360, Mexico City, Mexico
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5
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Cherraben S, Scelle J, Hasenknopf B, Vives G, Sollogoub M. Precise Rate Control of Pseudorotaxane Dethreading by pH-Responsive Selectively Functionalized Cyclodextrins. Org Lett 2021; 23:7938-7942. [PMID: 34582212 DOI: 10.1021/acs.orglett.1c02940] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A family of cyclodextrins functionalized with zero, one, two, or six amines was shown to control the rate of their threading and dethreading on a molecular axle depending on the pH and their substitution pattern. The originality of this system lies in the rate control of the switch by operating the stimulus directly on the macrocycle.
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Affiliation(s)
- Sawsen Cherraben
- Sorbonne Université, CNRS UMR8232, Institut Parisien de Chimie Moléculaire, 4 place Jussieu, 75005 Paris, France
| | - Jérémy Scelle
- Sorbonne Université, CNRS UMR8232, Institut Parisien de Chimie Moléculaire, 4 place Jussieu, 75005 Paris, France
| | - Bernold Hasenknopf
- Sorbonne Université, CNRS UMR8232, Institut Parisien de Chimie Moléculaire, 4 place Jussieu, 75005 Paris, France
| | - Guillaume Vives
- Sorbonne Université, CNRS UMR8232, Institut Parisien de Chimie Moléculaire, 4 place Jussieu, 75005 Paris, France
| | - Matthieu Sollogoub
- Sorbonne Université, CNRS UMR8232, Institut Parisien de Chimie Moléculaire, 4 place Jussieu, 75005 Paris, France
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6
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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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7
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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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8
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Gaedke M, Hupatz H, Schröder HV, Suhr S, Hoffmann KF, Valkonen A, Sarkar B, Riedel S, Rissanen K, Schalley CA. Dual-stimuli pseudorotaxane switches under kinetic control. Org Chem Front 2021. [DOI: 10.1039/d1qo00503k] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Dual-stimuli pseudorotaxane switches: Threaded complexes dissociate upon deprotonation or oxidation. A mechanical bond changes the influence of a ‘speed bump’ on the outcome of a switching event.
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Affiliation(s)
- Marius Gaedke
- Institut für Chemie und Biochemie der Freien Universität Berlin
- 14195 Berlin
- Germany
| | - Henrik Hupatz
- Institut für Chemie und Biochemie der Freien Universität Berlin
- 14195 Berlin
- Germany
| | - Hendrik V. Schröder
- Institut für Chemie und Biochemie der Freien Universität Berlin
- 14195 Berlin
- Germany
| | - Simon Suhr
- Lehrstuhl für Anorganische Koordinationschemie
- Institut für Anorganische Chemie
- Universität Stuttgart
- 70569 Stuttgart
- Germany
| | - Kurt F. Hoffmann
- Institut für Chemie und Biochemie der Freien Universität Berlin
- Berlin
- Germany
| | - Arto Valkonen
- Department of Chemistry P.O. Box 35
- 40014 Jyväskylä
- Finland
| | - Biprajit Sarkar
- Lehrstuhl für Anorganische Koordinationschemie
- Institut für Anorganische Chemie
- Universität Stuttgart
- 70569 Stuttgart
- Germany
| | - Sebastian Riedel
- Institut für Chemie und Biochemie der Freien Universität Berlin
- Berlin
- Germany
| | - Kari Rissanen
- Department of Chemistry P.O. Box 35
- 40014 Jyväskylä
- Finland
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9
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Das RS, Saha PC, Sepay N, Mukherjee A, Chatterjee S, Guha S. Design and Synthesis of Near-Infrared Mechanically Interlocked Molecules for Specific Targeting of Mitochondria. Org Lett 2020; 22:5839-5843. [PMID: 32663029 DOI: 10.1021/acs.orglett.0c01922] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
The entrapment of squaraine (SQ) within a molecular container to form rotaxane has been shown to improve the dye stability and the fluorescence proficiency inside the mitochondria. The macrocycle provides shelter and protects the near-infrared (NIR) SQ chromophore from nucleophilic attacks made by the exposed thiol of Cys-containing mitochondrial proteins and mitochondrial glutathione. Herein a microwave-assisted template-directed clipping reaction on low-loading 2-chlorotrityl chloride resin is used to develop an NIR unsymmetrical squaraine rotaxane in high quantum yield.
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Affiliation(s)
- Rabi Sankar Das
- Department of Chemistry, Organic Chemistry Section, Jadavpur University, Kolkata 700032, India
| | - Pranab Chandra Saha
- Department of Chemistry, Organic Chemistry Section, Jadavpur University, Kolkata 700032, India
| | - Nayim Sepay
- Department of Chemistry, Organic Chemistry Section, Jadavpur University, Kolkata 700032, India
| | - Ayan Mukherjee
- Department of Chemistry, Organic Chemistry Section, Jadavpur University, Kolkata 700032, India
| | - Sudipta Chatterjee
- Department of Chemistry, Serampore College, Serampore, West Bengal 712201, India
| | - Samit Guha
- Department of Chemistry, Organic Chemistry Section, Jadavpur University, Kolkata 700032, India
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10
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Luna-Ixmatlahua RA, Carrasco-Ruiz A, Cervantes R, Vela A, Tiburcio J. An Anionic Ring Locked into an Anionic Axle: A Metastable Rotaxane with Chemically Activated Electrostatic Stoppers. Chemistry 2019; 25:14042-14047. [PMID: 31468580 DOI: 10.1002/chem.201902735] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Revised: 08/28/2019] [Indexed: 02/03/2023]
Abstract
The use of the electrostatic stoppers concept in the field of mechanically interlocked molecules is reported; these stoppers are chemically sensitive end groups on a linear guest molecule that allows for the conversion of a pseudo-rotaxane species into a rotaxane complex by a change in the medium acidity. The chemical stimulus causes the appearance of negative charges on both ends of the linear component, passing from cationic to anionic, and causing a significant ring-to-axle electrostatic repulsion. This phenomenon has two different and simultaneous effects: 1) destabilizes the complex as a consequence of confining an anionic ring into an anionic axle, and 2) increases the dissociation energy barrier, thus impeding ring extrusion. This newly formed metastable rotaxane species is resistant to solvent and temperature effects and performs as a two-state degenerated molecular shuttle in solution.
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Affiliation(s)
- Rubi A Luna-Ixmatlahua
- Department of Chemistry, Center for Research and Advanced Studies (Cinvestav), Avenida IPN 2508, Zacatenco, Mexico City, 07360, Mexico
| | - Anayeli Carrasco-Ruiz
- Department of Chemistry, Center for Research and Advanced Studies (Cinvestav), Avenida IPN 2508, Zacatenco, Mexico City, 07360, Mexico
| | - Ruy Cervantes
- Department of Chemistry, Center for Research and Advanced Studies (Cinvestav), Avenida IPN 2508, Zacatenco, Mexico City, 07360, Mexico
| | - Alberto Vela
- Department of Chemistry, Center for Research and Advanced Studies (Cinvestav), Avenida IPN 2508, Zacatenco, Mexico City, 07360, Mexico
| | - Jorge Tiburcio
- Department of Chemistry, Center for Research and Advanced Studies (Cinvestav), Avenida IPN 2508, Zacatenco, Mexico City, 07360, Mexico
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11
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Abstract
Strong and stable under tension?
Strong and stable under tension? In this review we present the recent efforts investigating the mechanochemical properties of interlocked structures by atomic force microscopy and polymer mechanochemistry.
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Affiliation(s)
- Guillaume De Bo
- School of Chemistry , University of Manchester , Oxford Road , Manchester , M13 9PL , UK .
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12
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Gómez-Durán CFA, Liu W, Betancourt-Mendiola MDL, Smith BD. Structural Control of Kinetics for Macrocycle Threading by Fluorescent Squaraine Dye in Water. J Org Chem 2017; 82:8334-8341. [PMID: 28753022 DOI: 10.1021/acs.joc.7b01486] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
While the general concept of steric speed bumps has been demonstrated in rotaxane shuttles and macrocycle threading systems, the sensitivity of speed bump effects has not been evaluated as a function of structural geometry. Values of Ka and kon for macrocycle threading in water are reported for a series of homologous squaraine dyes with different substituents (speed bumps) on the flanking chains and two macrocycles with different cavity sizes. Sensitivity to a steric speed bump effect was found to depend on (a) structural location, being lowest when the speed bump was near the end of a flanking chain, and (b) macrocycle cavity size, which was enhanced when the cavity was constricted. This new insight is broadly applicable to many types of molecular threading systems.
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Affiliation(s)
- César F A Gómez-Durán
- Department of Chemistry and Biochemistry, University of Notre Dame , 236 Nieuwland Science Hall, South Bend, Indiana 46556, United States
| | - Wenqi Liu
- Department of Chemistry and Biochemistry, University of Notre Dame , 236 Nieuwland Science Hall, South Bend, Indiana 46556, United States
| | | | - Bradley D Smith
- Department of Chemistry and Biochemistry, University of Notre Dame , 236 Nieuwland Science Hall, South Bend, Indiana 46556, United States
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13
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Cruz-Vásquez O, Bernal-Sánchez LJ, Cervantes R, Tiburcio J, Rojas A. Energetics and the molecular structure of an ion-paired supramolecular system in water. Phys Chem Chem Phys 2017; 19:19334-19340. [PMID: 28703831 DOI: 10.1039/c7cp02955a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The forces that bind the components of a host-guest complex to generate a stable supramolecular system are noncovalent interactions. The enthalpy of this association, ΔasH°, usually measured using calorimetry, quantifies the magnitude of such interactions and is directly related to the stability of the supramolecular complex formed. Using Calvet calorimetry to determine the enthalpies of solution and reaction in water, the enthalpy of association was derived for a supramolecular system formed by the anionic macrocycle anti-disulfodibenzo[24]crown-8 ([DSDB24C8]2-) and the dicationic guest paraquat [PQT]2+. The calorimetric results show an exothermic association process, which indicates the generation of strong interactions between the components of the ion pair. This is consistent with the formation of a stable supramolecular complex [PQT][DSDB24C8], whose spatial arrangement in aqueous solution is proposed based on spectroscopic analysis.
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Affiliation(s)
- Octavio Cruz-Vásquez
- Departamento de Química, Centro de Investigación y de Estudios Avanzados del IPN (Cinvestav), Ciudad de México, Mexico.
| | - Lan Jade Bernal-Sánchez
- Departamento de Química, Centro de Investigación y de Estudios Avanzados del IPN (Cinvestav), Ciudad de México, Mexico.
| | - Ruy Cervantes
- Departamento de Química, Centro de Investigación y de Estudios Avanzados del IPN (Cinvestav), Ciudad de México, Mexico.
| | - Jorge Tiburcio
- Departamento de Química, Centro de Investigación y de Estudios Avanzados del IPN (Cinvestav), Ciudad de México, Mexico.
| | - Aarón Rojas
- Departamento de Química, Centro de Investigación y de Estudios Avanzados del IPN (Cinvestav), Ciudad de México, Mexico.
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14
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A Versatile Axle for the Construction of Disassemblage Rotaxanes. Molecules 2016; 21:molecules21081043. [PMID: 27517897 PMCID: PMC6274001 DOI: 10.3390/molecules21081043] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Revised: 08/02/2016] [Accepted: 08/04/2016] [Indexed: 11/23/2022] Open
Abstract
Rotaxanes are unique mechanical devices that hold great promise as sensors. We report on two new rotaxanes that contain an acid or base sensitive trigger and readily disassemble in a wide range of environments. Disassemblage was observed under TLC and 1H-NMR analysis. The axle is highly charged, which enhances solubility in aqueous environments, and can be readily derivatized with sensor components. The trigger was swapped in a one-pot method, which is promising for the rapid production of a series of sensors.
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15
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Riss-Yaw B, Waelès P, Coutrot F. Reverse Anomeric Effect in Large-Amplitude Pyridinium Amide-Containing Mannosyl [2]Rotaxane Molecular Shuttles. Chemphyschem 2016; 17:1860-9. [DOI: 10.1002/cphc.201600253] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2016] [Indexed: 01/22/2023]
Affiliation(s)
- Benjamin Riss-Yaw
- Supramolecular Machines and ARchitectures Team; Institut des Biomolécules Max Mousseron (IBMM) UMR 5247 CNRS; Université Montpellier, ENSCM, Case courrier 1706, Bâtiment Chimie (17), 3ème étage, Faculté des Sciences, Place Eugène Bataillon; 34095 Montpellier cedex 5 France
| | - Philip Waelès
- Supramolecular Machines and ARchitectures Team; Institut des Biomolécules Max Mousseron (IBMM) UMR 5247 CNRS; Université Montpellier, ENSCM, Case courrier 1706, Bâtiment Chimie (17), 3ème étage, Faculté des Sciences, Place Eugène Bataillon; 34095 Montpellier cedex 5 France
| | - Frédéric Coutrot
- Supramolecular Machines and ARchitectures Team; Institut des Biomolécules Max Mousseron (IBMM) UMR 5247 CNRS; Université Montpellier, ENSCM, Case courrier 1706, Bâtiment Chimie (17), 3ème étage, Faculté des Sciences, Place Eugène Bataillon; 34095 Montpellier cedex 5 France
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16
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Catalán AC, Tiburcio J. Self-assembly of pseudo-rotaxane and rotaxane complexes using an electrostatic slippage approach. Chem Commun (Camb) 2016; 52:9526-9. [DOI: 10.1039/c6cc04619c] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The protonation of a cyclic tertiary amine, integrated into the structure of a dumbbell-shaped guest molecule, accelerates the sliding of the guest through the cavity of a crown ether macrocycle to yield a stable pseudo-rotaxane complex.
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Affiliation(s)
- Aldo C. Catalán
- Departamento de Química
- Centro de Investigación y de Estudios Avanzados (Cinvestav)
- Ciudad de Mexico
- Mexico
| | - Jorge Tiburcio
- Departamento de Química
- Centro de Investigación y de Estudios Avanzados (Cinvestav)
- Ciudad de Mexico
- Mexico
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17
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Liu W, Peck EM, Hendzel KD, Smith BD. Sensitive Structural Control of Macrocycle Threading by a Fluorescent Squaraine Dye Flanked by Polymer Chains. Org Lett 2015; 17:5268-71. [PMID: 26452041 PMCID: PMC4636930 DOI: 10.1021/acs.orglett.5b02633] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A macrocyclic tetralactam is threaded by a complementary squaraine dye that is flanked by two polyethylene glycol chains to produce a pseudorotaxane complex with favorable near-infrared fluorescence properties. The association thermodynamics and kinetics were measured for a homologous series of squaraines with different N-alkyl substituents at both ends of the dye. The results show that subtle changes in substituent steric size have profound effects on threading kinetics without greatly altering the very high association constant.
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Affiliation(s)
- Wenqi Liu
- Department of Chemistry and Biochemistry, 236 Nieuwland Science Hall, University of Notre Dame, Notre Dame, Indiana 46556, USA
| | - Evan M. Peck
- Department of Chemistry and Biochemistry, 236 Nieuwland Science Hall, University of Notre Dame, Notre Dame, Indiana 46556, USA
| | - Kevin D. Hendzel
- Department of Chemistry and Biochemistry, 236 Nieuwland Science Hall, University of Notre Dame, Notre Dame, Indiana 46556, USA
| | - Bradley D. Smith
- Department of Chemistry and Biochemistry, 236 Nieuwland Science Hall, University of Notre Dame, Notre Dame, Indiana 46556, USA
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