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Kumar Sharma A, Som S, Chopra D, Srivastava A. Modulating Helix-Preference of an Axially-Twisted Molecular Scaffold Through Diastereomeric Salt Formation with Tartaric Acid Stereoisomers. Chemistry 2024; 30:e202401956. [PMID: 38880769 DOI: 10.1002/chem.202401956] [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: 05/20/2024] [Revised: 06/12/2024] [Accepted: 06/13/2024] [Indexed: 06/18/2024]
Abstract
Herein, we designed a chiral, axially-twisted molecular scaffold (ATMS) using pyridine-2,6-dicarboxamide (PDC) unit as pivot, chiral trans-cyclohexanediamine (CHDA) residues as linkers, and pyrene residues as fluorescent reporters. R,R-ATMS exclusively adopted M-helicity and produced differential response in UV-vis, fluorescence, and NMR upon addition of tartaric acid (TA) stereoisomers allowing naked-eye detection and enantiomeric content determination. Circular dichroism (CD) profile of R,R-ATMS underwent unique changes during titration with TA stereoisomers - while loss of CD signal at 345 nm was observed with equimolar D-TA and meso-TA, inversion was seen with equimolar L-TA. Temperature increase weakened these interactions to partially recover the original CD signature of R,R-ATMS. 2D NMR studies also indicated the significant structural changes in R,R-ATMS in the solution state upon addition of L-TA. Single crystal X-ray diffraction (SCXRD) studies on the crystals of the R,R-ATMS⊃D-TA salt revealed the interacting partners stacked in arrays and ATMS molecules stabilized by π-π stacking between its PDC and pyrene residues. Contrastingly, tightly-packed supramolecular cages comprised of four molecules each of R,R-ATMS and L-TA were seen in R,R-ATMS⊃L-TA salt, and the ATMS molecules contorted to achieve CH-π interactions between its pyrene residues. These results may have implications in modulating the helicity of topologically-similar larger biomolecules.
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Affiliation(s)
- Akash Kumar Sharma
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal (IISER Bhopal), Bhopal Bypass Road, 462066, Bhauri, Bhopal, India
| | - Shubham Som
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal (IISER Bhopal), Bhopal Bypass Road, 462066, Bhauri, Bhopal, India
| | - Deepak Chopra
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal (IISER Bhopal), Bhopal Bypass Road, 462066, Bhauri, Bhopal, India
| | - Aasheesh Srivastava
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal (IISER Bhopal), Bhopal Bypass Road, 462066, Bhauri, Bhopal, India
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2
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Yao C, Gole B, Bui AT, Kauffmann B, Huc I, McClenaghan ND, Ferrand Y. Photon-gated foldaxane assembly/disassembly. Chem Commun (Camb) 2024; 60:8415-8418. [PMID: 39028296 DOI: 10.1039/d4cc03218g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/20/2024]
Abstract
Integrating multiple anthracene motifs into aromatic oligoamide sequences gives rise to photoactive foldamers that can sequester a molecular thread forming helix-on-axle assemblies. Photoirradiation is shown to distort the helical host and drive dissociation of the supramolecular assembly and thread liberation as signalled by a photonic output, while thermal reversion regenerates the assembly.
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Affiliation(s)
- Chenhao Yao
- Univ. Bordeaux, CNRS, Bordeaux INP, CBMN (UMR 5248), 2 rue Escarpit, 33600 Pessac, France.
| | - Bappaditya Gole
- Univ. Bordeaux, CNRS, Bordeaux INP, CBMN (UMR 5248), 2 rue Escarpit, 33600 Pessac, France.
| | - Anh Thy Bui
- Univ. Bordeaux, CNRS, Institut des Sciences Moléculaires (UMR5255), 351 cours de la Libération, 33405 Talence cedex, France.
| | - Brice Kauffmann
- Univ. Bordeaux, CNRS, INSERM, Institut Européen de Chimie Biologie (UAR3033/US001), 2 rue Escarpit, 33600 Pessac, France
| | - Ivan Huc
- Department of Pharmacy Ludwig-Maximilians-Universität München Butenandtstr. 5-13, 81377 Munich, Germany
| | - Nathan D McClenaghan
- Univ. Bordeaux, CNRS, Institut des Sciences Moléculaires (UMR5255), 351 cours de la Libération, 33405 Talence cedex, France.
| | - Yann Ferrand
- Univ. Bordeaux, CNRS, Bordeaux INP, CBMN (UMR 5248), 2 rue Escarpit, 33600 Pessac, France.
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3
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Yu L, Li D, Ma C, Kauffmann B, Liao S, Gan Q. Redox-Regulated and Guest-Driven Transformations of Aromatic Oligoamide Foldamers in Advanced Structures. J Am Chem Soc 2024; 146:12907-12912. [PMID: 38691420 DOI: 10.1021/jacs.4c03275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/03/2024]
Abstract
In this study, we demonstrate that an aromatic oligoamide sequence assembles into a trimeric helix-turn-helix architecture with a disulfide linkage, and upon cleavage of this linkage, it reconstructs into an antiparallel double helix. The antiparallel double helix is accessible to encapsulate a diacid guest within its cavity, forming a 2:1 host-guest complex. In contrast, hydrogen-bonding interactions between the trimeric-assembled structure and guests induce a conformational shift in the trimeric helix, resulting in a cross-shaped double-helix complex at a 2:2 host-guest ratio. Interconversions between the trimeric helix and the antiparallel double helix, along with their respective host-guest complexes, can be initiated through thiol/disulfide redox-mediated regulation.
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Affiliation(s)
- Lu Yu
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Luoyu Road No. 1037, 430074, Wuhan, China
| | - Dongyao Li
- School of Biomedical Sciences and Engineering, Guangzhou International Campus, South China University of Technology, 777 Xingye Avenue East, Panyu District, 511442, Guangzhou, China
| | - Chunmiao Ma
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Luoyu Road No. 1037, 430074, Wuhan, China
| | - Brice Kauffmann
- Université de Bordeaux, CNRS, INSERM, Institut Européen de Chimie Biologie (UMS3033/US001), 2 Rue Escarpit, 33600, Pessac, France
| | - Sibei Liao
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Luoyu Road No. 1037, 430074, Wuhan, China
| | - Quan Gan
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Luoyu Road No. 1037, 430074, Wuhan, China
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4
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Liao S, Tang J, Ma C, Yu L, Tan Y, Li X, Gan Q. Foldaxane-Based Switchable [c2]Daisy Chains. Angew Chem Int Ed Engl 2024; 63:e202315668. [PMID: 38346927 DOI: 10.1002/anie.202315668] [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: 10/17/2023] [Indexed: 02/29/2024]
Abstract
Artificial molecular muscles are highly attractive in the field of molecular machinery due to their unique properties of contraction and stretching motion. However, the synthesis of molecular muscles poses formidable challenges as it is hindered by undesirable yields and poor selectivity. Herein, we present a procedure for the dynamic assembly of foldaxane-based [c2]daisy chains, wherein the hermaphroditic sequences consisting of aromatic helices and peptide rods are interlocked through inter-strand hydrogen-bonding interactions. The binding complementarity facilitates a selective and efficient assembly of [c2]daisy chain structures, inhibiting the creation of by-products. Introducing multiple recognition sites confers the system with contraction and stretching motion actuated by chemical stimuli. The rate of this muscle-like motion is calculated to be 0.8 s-1, which is 107 times faster than that of complex dissociation.
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Affiliation(s)
- Sibei Liao
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medical, Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Luoyu Road No. 1037, 430074, Wuhan, China
| | - Jie Tang
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medical, Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Luoyu Road No. 1037, 430074, Wuhan, China
| | - Chunmiao Ma
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medical, Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Luoyu Road No. 1037, 430074, Wuhan, China
| | - Lu Yu
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medical, Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Luoyu Road No. 1037, 430074, Wuhan, China
| | - Ying Tan
- State Key Laboratory of Chemical Oncogenomics, Key Laboratory of Chemical Biology, Tsinghua Shenzhen International Graduate School, Tsinghua University, 518055, Shenzhen, China
| | - Xuanzhu Li
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medical, Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Luoyu Road No. 1037, 430074, Wuhan, China
| | - Quan Gan
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medical, Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Luoyu Road No. 1037, 430074, Wuhan, China
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5
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Lago-Silva M, Fernández-Míguez M, Rodríguez R, Quiñoá E, Freire F. Stimuli-responsive synthetic helical polymers. Chem Soc Rev 2024; 53:793-852. [PMID: 38105704 DOI: 10.1039/d3cs00952a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2023]
Abstract
Synthetic dynamic helical polymers (supramolecular and covalent) and foldamers share the helix as a structural motif. Although the materials are different, these systems also share many structural properties, such as helix induction or conformational communication mechanisms. The introduction of stimuli responsive building blocks or monomer repeating units in these materials triggers conformational or structural changes, due to the presence/absence of the external stimulus, which are transmitted to the helix resulting in different effects, such as assymetry amplification, helix inversion or even changes in the helical scaffold (elongation, J/H helical aggregates). In this review, we show through selected examples how different stimuli (e.g., temperature, solvents, cations, anions, redox, chiral additives, pH or light) can alter the helical structures of dynamic helical polymers (covalent and supramolecular) and foldamers acting on the conformational composition or molecular structure of their components, which is also transmitted to the macromolecular helical structure.
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Affiliation(s)
- María Lago-Silva
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica, Universidade de Santiago de Compostela, E-15782 Santiago de Compostela, Spain.
| | - Manuel Fernández-Míguez
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica, Universidade de Santiago de Compostela, E-15782 Santiago de Compostela, Spain.
| | - Rafael Rodríguez
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica, Universidade de Santiago de Compostela, E-15782 Santiago de Compostela, Spain.
| | - Emilio Quiñoá
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica, Universidade de Santiago de Compostela, E-15782 Santiago de Compostela, Spain.
| | - Félix Freire
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica, Universidade de Santiago de Compostela, E-15782 Santiago de Compostela, Spain.
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6
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Wang M, Jin Y, Zhang W, Zhao Y. Single-crystal polymers (SCPs): from 1D to 3D architectures. Chem Soc Rev 2023; 52:8165-8193. [PMID: 37929665 DOI: 10.1039/d3cs00553d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2023]
Abstract
Single-crystal polymers (SCPs) with unambiguous chemical structures at atomic-level resolutions have attracted great attention. Obtaining precise structural information of these materials is critical as it enables a deeper understanding of the potential driving forces for specific packing and long-range order, secondary interactions, and kinetic and thermodynamic factors. Such information can ultimately lead to success in controlling the synthesis or engineering of their crystal structures for targeted applications, which could have far-reaching impact. Successful synthesis of SCPs with atomic level control of the structures, especially for those with 2D and 3D architectures, is rare. In this review, we summarize the recent progress in the synthesis of SCPs, including 1D, 2D, and 3D architectures. Solution synthesis, topochemical synthesis, and extreme condition synthesis are summarized and compared. Around 70 examples of SCPs with unambiguous structure information are presented, and their synthesis methods and structural analysis are discussed. This review offers critical insights into the structure-property relationships, providing guidance for the future rational design and bottom-up synthesis of a variety of highly ordered polymers with unprecedented functions and properties.
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Affiliation(s)
- Mingsen Wang
- College of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao 266000, China.
| | - Yinghua Jin
- Department of Chemistry, University of Colorado Boulder, Boulder, Colorado 80309, USA.
| | - Wei Zhang
- Department of Chemistry, University of Colorado Boulder, Boulder, Colorado 80309, USA.
| | - Yingjie Zhao
- College of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao 266000, China.
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7
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Kermagoret A, Bardelang D. The Diversity of Cucurbituril Molecular Switches and Shuttles. Chemistry 2023:e202302114. [PMID: 37725407 DOI: 10.1002/chem.202302114] [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: 07/03/2023] [Revised: 09/15/2023] [Accepted: 09/18/2023] [Indexed: 09/21/2023]
Abstract
Ring translocation switches and shuttles featuring a macrocycle (or a ring molecule) navigating between two or more stations continue to attract attention. While the vast majority of these systems are developed in organic solvents, the cucurbituril (CB) macrocycles are ideally suited to prepare such systems in water. Indeed, their stability and their relatively high affinity for relevant guest molecules are key attributes toward translating the progresses made in organic solvents, into water. This concept article summarizes the findings, key advances and multiple possibilities offered by CBs toward advanced molecular switches and shuttles in water.
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8
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Gao L, Ding Y, He G, Yu G. Bio-Derived and Cost-Effective Membranes with High Selectivity for Redox Flow Batteries Based on Host-Guest Chemistry. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2107055. [PMID: 35199473 DOI: 10.1002/smll.202107055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Revised: 01/23/2022] [Indexed: 06/14/2023]
Abstract
Redox flow batteries (RFBs) stand out as a promising energy storage system to solve the grid interconnection problems of renewable energy. Membranes play a critical role in regulating the performance of RFBs, and the selectivity is commonly controlled via either size exclusion or Donnan exclusion. Membranes typically account for 40% of the stack cost of RFBs, and it is essential to develop cost-effective membranes with high selectivity to achieve widespread application. Here, a type of membrane composed of highly abundant materials derived in nature, based on a scalable fabrication process, is reported. Moreover, high selectivity is achieved attributed to the host-guest interactions between membranes and redox species, which effectively alleviate the crossover of redox-active molecules. By incorporating starch into a chitosan matrix for zinc-iodine RFBs, the highly selective recognition of starch and chitosan (host) toward triiodide (guest) builds a "wall" to block the triiodide-based active materials, meanwhile, the conducting properties of such a membrane are not compromised. The proof-of-concept battery delivers a Coulombic efficiency of 98.6% and energy efficiency of 77.4% at a current density of 80 mA cm-2 , showing the promise of such a novel and cost-effective membrane design beyond traditional selectivity chemistry.
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Affiliation(s)
- Li Gao
- Materials Science and Engineering Program and Walker Department of Mechanical Engineering, The University of Texas at Austin, Austin, TX, 78712, USA
- State Key Laboratory of Fine Chemicals, R&D Center of Membrane Science and Technology, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Yu Ding
- Materials Science and Engineering Program and Walker Department of Mechanical Engineering, The University of Texas at Austin, Austin, TX, 78712, USA
| | - Gaohong He
- State Key Laboratory of Fine Chemicals, R&D Center of Membrane Science and Technology, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Guihua Yu
- Materials Science and Engineering Program and Walker Department of Mechanical Engineering, The University of Texas at Austin, Austin, TX, 78712, USA
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Su F, Zhang S, Chen Z, Zhang Z, Li Z, Lu S, Zhang M, Fang F, Kang S, Guo C, Su C, Yu X, Wang H, Li X. Precise Synthesis of Concentric Ring, Helicoid, and Ladder Metallo-Polymers with Chevron-Shaped Monomers. J Am Chem Soc 2022; 144:16559-16571. [PMID: 35998652 DOI: 10.1021/jacs.2c06251] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Molecular geometry represents one of the most important structural features and governs physical properties and functions of materials. Nature creates a wide array of substances with distinct geometries but similar chemical composition with superior efficiency and precision. However, it remains a formidable challenge to construct abiological macromolecules with various geometries based on identical repeating units, owing to the lack of corresponding synthetic approaches for precisely manipulating the connectivity between monomers and feasible techniques for characterizing macromolecules at the single-molecule level. Herein, we design and synthesize a series of tetratopic monomers with chevron stripe shape which serve as the key precursors to produce four distinct types of metallo-macromolecules with well-defined geometries, viz., the concentric hexagon, helicoid polymer, ladder polymer, and cross-linked polymer, via platinum-acetylide couplings. Concentric hexagon, helicoid, and ladder metallo-polymers are directly visualized by transmission electron microscopy, atomic force microscopy, and ultra-high-vacuum low-temperature scanning tunneling microscopy at the single-molecule level. Finally, single-walled carbon nanotubes (SWCNTs) are selected as the guest to investigate the structure-property relationship based on such macromolecules, among which the helicoid metallo-polymer shows high efficiency in wrapping SWCNTs with geometry-dependent selectivity.
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Affiliation(s)
- Feng Su
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, Guangdong 518060, China.,Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen, Guangdong 518060, China
| | - Shunran Zhang
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, Guangdong 518060, China.,Guangdong Provincial Key Laboratory of Distributed Energy Systems, Dongguan University of Technology, Dongguan, Guangdong 523106, China
| | - Zhi Chen
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, Guangdong 518060, China
| | - Zeyuan Zhang
- State Key Laboratory for Mechanical Behavior of Materials, Shaanxi International Research Center for Soft Matter, School of Materials Science and Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710061, China
| | - Zhikai Li
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, Guangdong 518060, China
| | - Shuai Lu
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, Guangdong 518060, China
| | - Mingming Zhang
- State Key Laboratory for Mechanical Behavior of Materials, Shaanxi International Research Center for Soft Matter, School of Materials Science and Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710061, China
| | - Fang Fang
- Instrumental Analysis Center, Shenzhen University, Shenzhen, Guangdong 518060, China
| | - Shimin Kang
- Guangdong Provincial Key Laboratory of Distributed Energy Systems, Dongguan University of Technology, Dongguan, Guangdong 523106, China
| | - Chenxing Guo
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, Guangdong 518060, China
| | - Chenliang Su
- Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen, Guangdong 518060, China
| | - Xiujun Yu
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, Guangdong 518060, China
| | - Heng Wang
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, Guangdong 518060, China
| | - Xiaopeng Li
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, Guangdong 518060, China.,Shenzhen University General Hospital, Shenzhen University Clinical Medical Academy, Shenzhen, Guangdong 518055, China
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Koehler V, Gauthier M, Yao C, Fournel-Marotte K, Waelès P, Kauffmann B, Huc I, Coutrot F, Ferrand Y. [3]Foldarotaxane-mediated synthesis of an improbable [2]rotaxane. Chem Commun (Camb) 2022; 58:8618-8621. [PMID: 35786713 DOI: 10.1039/d2cc03066g] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The wrapping of an aromatic oligoamide helix around an active ester-containing [2]rotaxane enforced the sliding and the sequestration of the surrounding macrocycle around a part of the axle for which it has no formal affinity. The foldamer-mediated compartmentalization of the [2]rotaxane shuttle was subsequently used to prepare an improbable rotaxane.
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Affiliation(s)
- Victor Koehler
- Institut de Chimie et Biologie des Membranes et Nano-objets CBMN (UMR5248), Université de Bordeaux, CNRS, IPB, 2 rue Robert Escarpit, 33600, Pessac, France.
| | - Maxime Gauthier
- Supramolecular Machines and Archtectures Team, IBMM, Univ Montpellier, CNRS, ENSCM, Montpellier, France.
| | - Chenhao Yao
- Institut de Chimie et Biologie des Membranes et Nano-objets CBMN (UMR5248), Université de Bordeaux, CNRS, IPB, 2 rue Robert Escarpit, 33600, Pessac, France.
| | - Karine Fournel-Marotte
- Supramolecular Machines and Archtectures Team, IBMM, Univ Montpellier, CNRS, ENSCM, Montpellier, France.
| | - Philip Waelès
- Supramolecular Machines and Archtectures Team, IBMM, Univ Montpellier, CNRS, ENSCM, Montpellier, France.
| | - Brice Kauffmann
- Université de Bordeaux, CNRS, INSERM, UMS3033, IECB, 2 rue Robert Escarpit, 33600, Pessac, France
| | - Ivan Huc
- Department of Pharmacy, Ludwig-Maximilians-Universität, Butenandtstr. 5-13, 81377, München, Germany
| | - Frédéric Coutrot
- Supramolecular Machines and Archtectures Team, IBMM, Univ Montpellier, CNRS, ENSCM, Montpellier, France.
| | - Yann Ferrand
- Institut de Chimie et Biologie des Membranes et Nano-objets CBMN (UMR5248), Université de Bordeaux, CNRS, IPB, 2 rue Robert Escarpit, 33600, Pessac, France.
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11
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Koehler V, Roy A, Huc I, Ferrand Y. Foldaxanes: Rotaxane-like Architectures from Foldamers. Acc Chem Res 2022; 55:1074-1085. [PMID: 35293719 DOI: 10.1021/acs.accounts.2c00050] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Mechanically interlocked molecules such as rotaxanes and catenanes contain free-moving components that cannot dissociate and have enabled the investigation and control of various translational and rotational molecular motions. The architecture of pseudo-rotaxanes and of some kinetically labile rotaxanes is comparable to that of rotaxanes but their components are reversibly associated and not irreversibly interlocked. In other words, pseudo-rotaxanes may fall apart. This Account focuses on a peculiar family of rotaxane-like architectures termed foldaxanes.Foldaxanes consist of a helically folded oligomer wound around a rod-like dumbbell-shaped guest. Winding of the helix around the rod thus entails an unwinding-rewinding process that creates a kinetic barrier. It follows that foldaxanes, albeit reversibly assembled, have significant lifetimes and may not fall apart while defined molecular motions are triggered. Foldaxanes based on helically folded aromatic oligoamide hosts and oligo(alkyl carbamate) guests can be designed rationally through the inclusion of complementary binding motifs on the rod and at the inner rim of the helix so that helix length and rod length match. Single helical foldaxanes (bimolecular species) and double helical foldaxanes (trimolecular species) have thus been produced as well as poly[n]foldaxanes, in which several helices bind to long rods with multiple binding stations. When the binding stations differ and are organized in a certain sequence, a complementary sequence of different stacked helices, each matching with their binding station, can be assembled, thus reproducing in an artificial system a sort of translation process.Foldaxane helix handedness may be controlled by stereogenic centers on the rod-like guest. Handedness can also be transmitted from helix to helix in polyfoldaxanes. Foldaxane formation has drastic consequences for the rod properties, including its stiffening and the restriction of the mobility of a macrocycle already interlocked on the rod. Fast translation (without dissociation) of helices along rod-like guests has been demonstrated. Because of the helical nature of the hosts, translation may be accompanied by rotation in various sorts of screw-like motions. The possibility, on longer time scales, for the helix to dissociate from and reassociate to the rod has allowed for the design of complex, kinetically controlled supramolecular pathways of a helix on a rod. Furthermore, the design of helices with a directionality, that is, with two distinct termini, that bind to nonsymmetrical rod-like guests in a defined orientation makes it possible to also control the orientation of molecular motion. Altogether, foldaxanes constitute a distinct and full-of-potential family of rotaxane-like architectures that possess designer structures and allow orchestration of the time scales of various supramolecular events.
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Affiliation(s)
- Victor Koehler
- CNRS, Bordeaux Institut National Polytechnique, CBMN (UMR 5248), Université de Bordeaux, Institut Européen de Chimie et Biologie, 2 Rue Escarpit, 33600 Pessac, France
| | - Arundhati Roy
- Department Pharmazie, Ludwig-Maximilians-Universität, Butenandtstraße 5-13, D-81377 München, Germany
| | - Ivan Huc
- Department Pharmazie, Ludwig-Maximilians-Universität, Butenandtstraße 5-13, D-81377 München, Germany
| | - Yann Ferrand
- CNRS, Bordeaux Institut National Polytechnique, CBMN (UMR 5248), Université de Bordeaux, Institut Européen de Chimie et Biologie, 2 Rue Escarpit, 33600 Pessac, France
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Elucidation of the key role of Pt···Pt interactions in the directional self-assembly of platinum(II) complexes. Proc Natl Acad Sci U S A 2022; 119:e2116543119. [PMID: 35298336 PMCID: PMC8944581 DOI: 10.1073/pnas.2116543119] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Molecular self-assembly provides a bottom-up platform to design supramolecular functional materials, attracting numerous interests in material sciences. The utilization of platinum(II) complexes as building blocks of supramolecular assemblies opens up the unique noncovalent Pt···Pt interaction as one of the driving forces, imparting the supramolecular materials with rich spectroscopic features. However, the exact role of Pt···Pt interactions in molecular assembly remains elusive. The current study combines experimental and computational techniques to elucidate the role of Pt···Pt interactions in the self-assembly process of a representative amphiphilic platinum(II) complex. This work demonstrates the directional role of Pt···Pt interactions in assisting the molecular assembly in an anisotropic manner, achieving the formation of ordered self-assembled structures. Here, we report the use of an amphiphilic Pt(II) complex, K[Pt{(O3SCH2CH2CH2)2bzimpy}Cl] (PtB), as a model to elucidate the key role of Pt···Pt interactions in directing self-assembly by combining temperature-dependent ultraviolet-visible (UV-Vis) spectroscopy, stopped-flow kinetic experiments, quantum mechanics (QM) calculations, and molecular dynamics (MD) simulations. Interestingly, we found that the self-assembly mechanism of PtB in aqueous solution follows a nucleation-free isodesmic model, as revealed by the temperature-dependent UV-Vis experiments. In contrast, a cooperative growth is found for the self-assembly of PtB in acetone–water (7:1, vol/vol) solution, which is further verified by the stopped-flow experiments, which clearly indicates the existence of a nucleation phase in the acetone–water (7:1, vol/vol) solution. To reveal the underlying reasons and driving forces for these self-assembly processes, we performed QM calculations and show that the Pt···Pt interactions arising from the interaction between the pz and dz2 orbitals play a crucial role in determining the formation of ordered self-assembled structures. In subsequent oligomer MD simulations, we demonstrate that this directional Pt···Pt interaction can indeed facilitate the formation of linear structures packed in a helix-like fashion. Our results suggest that the self-assembly of PtB in acetone–water (7:1, vol/vol) solution is predominantly driven by the directional noncovalent Pt···Pt interaction, leading to the cooperative growth and the formation of fibrous nanostructures. On the contrary, the self-assembly in aqueous solution forms spherical nanostructures of PtB, which is primarily due to the predominant contribution from the less directional hydrophobic interactions over the directional Pt···Pt and π−π interactions that result in an isodesmic growth.
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13
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Zhang C, Li D, Zhang G, Wang X, Mao L, Gan Q, Ding T, Xu H. Switching plasmonic nanogaps between classical and quantum regimes with supramolecular interactions. SCIENCE ADVANCES 2022; 8:eabj9752. [PMID: 35119919 PMCID: PMC8816333 DOI: 10.1126/sciadv.abj9752] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
In the realm of extreme nanophotonics, nanogap plasmons support reliable field enhancements up to 1000, which provide unique opportunities to access a single molecule for strong coupling and a single atom for quantum catalysis. The quantum plasmonics are intriguing but difficult to modulate largely because of the lack of proper spacers that can reversibly actuate the sub-1-nm gaps. Here, we demonstrate that supramolecular systems made of oligoamide sequences can reversibly switch the gap plasmons of Au nanoparticles on mirror between classical and quantum tunneling regimes via supramolecular interactions. The results reveal detailed plasmon shift near the quantum tunneling limit, which fits well with both classical- and quantum-corrected models. In the quantum tunneling regime, we demonstrate that plasmonic hot electron tunneling can further blue shift the quantum plasmons because of the increased conductance in the nanogaps, making it a promising prototype of optical tunable quantum plasmonic devices.
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Affiliation(s)
- Chi Zhang
- Key Laboratory of Artificial Micro/Nano Structure of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan 430072, China
| | - Dongyao Li
- School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Guangdi Zhang
- Key Laboratory of Artificial Micro/Nano Structure of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan 430072, China
| | - Xujie Wang
- Key Laboratory of Artificial Micro/Nano Structure of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan 430072, China
| | - Li Mao
- Key Laboratory of Artificial Micro/Nano Structure of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan 430072, China
| | - Quan Gan
- School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
- Corresponding author. (T.D.); (Q.G.)
| | - Tao Ding
- Key Laboratory of Artificial Micro/Nano Structure of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan 430072, China
- Corresponding author. (T.D.); (Q.G.)
| | - Hongxing Xu
- Key Laboratory of Artificial Micro/Nano Structure of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan 430072, China
- School of Microelectronics, Wuhan University, Wuhan 430072, China
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14
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Giuffrida SG, Forysiak W, Cwynar P, Szweda R. Shaping Macromolecules for Sensing Applications—From Polymer Hydrogels to Foldamers. Polymers (Basel) 2022; 14:polym14030580. [PMID: 35160568 PMCID: PMC8840496 DOI: 10.3390/polym14030580] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Revised: 01/21/2022] [Accepted: 01/23/2022] [Indexed: 12/14/2022] Open
Abstract
Sensors are tools for detecting, recognizing, and recording signals from the surrounding environment. They provide measurable information on chemical or physical changes, and thus are widely used in diagnosis, environment monitoring, food quality checks, or process control. Polymers are versatile materials that find a broad range of applications in sensory devices for the biomedical sector and beyond. Sensory materials are expected to exhibit a measurable change of properties in the presence of an analyte or a stimulus, characterized by high sensitivity and selectivity of the signal. Signal parameters can be tuned by material features connected with the restriction of macromolecule shape by crosslinking or folding. Gels are crosslinked, three-dimensional networks that can form cavities of different sizes and forms, which can be adapted to trap particular analytes. A higher level of structural control can be achieved by foldamers, which are macromolecules that can attain well-defined conformation in solution. By increasing control over the three-dimensional structure, we can improve the selectivity of polymer materials, which is one of the crucial requirements for sensors. Here, we discuss various examples of polymer gels and foldamer-based sensor systems. We have classified and described applied polymer materials and used sensing techniques. Finally, we deliberated the necessity and potential of further exploration of the field towards the increased selectivity of sensory devices.
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Affiliation(s)
- Simone Giuseppe Giuffrida
- Łukasiewicz Research Network—PORT Polish Center for Technology Development, ul. Stabłowicka 147, 54-066 Wrocław, Poland; (S.G.G.); (W.F.); (P.C.)
| | - Weronika Forysiak
- Łukasiewicz Research Network—PORT Polish Center for Technology Development, ul. Stabłowicka 147, 54-066 Wrocław, Poland; (S.G.G.); (W.F.); (P.C.)
- Faculty of Chemistry, University of Wrocław, F. Joliot-Curie, 50-383 Wrocław, Poland
| | - Pawel Cwynar
- Łukasiewicz Research Network—PORT Polish Center for Technology Development, ul. Stabłowicka 147, 54-066 Wrocław, Poland; (S.G.G.); (W.F.); (P.C.)
- Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
| | - Roza Szweda
- Łukasiewicz Research Network—PORT Polish Center for Technology Development, ul. Stabłowicka 147, 54-066 Wrocław, Poland; (S.G.G.); (W.F.); (P.C.)
- Correspondence:
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15
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Iadevaia G, Swain JA, Núñez-Villanueva D, Bond AD, Hunter CA. Folding and duplex formation in mixed sequence recognition-encoded m-phenylene ethynylene polymers. Chem Sci 2021; 12:10218-10226. [PMID: 34377409 PMCID: PMC8336474 DOI: 10.1039/d1sc02288a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Accepted: 06/30/2021] [Indexed: 11/21/2022] Open
Abstract
Oligomers equipped with complementary recognition units have the potential to encode and express chemical information in the same way as nucleic acids. The supramolecular assembly properties of m-phenylene ethynylene polymers equipped with H-bond donor (D = phenol) and H-bond acceptor (A = phosphine oxide) side chains have been investigated in chloroform solution. Polymerisation of a bifunctional monomer in the presence of a monofunctional chain stopper was used for the one pot synthesis of families of m-phenylene ethynylene polymers with sequences ADnA or DAnD (n = 1-5), which were separated by chromatography. All of the oligomers self-associate due to intermolecular H-bonding interactions, but intramolecular folding of the monomeric single strands can be studied in dilute solution. NMR and fluorescence spectroscopy show that the 3-mers ADA and DAD do not fold, but there are intramolecular H-bonding interactions for all of the longer sequences. Nevertheless, 1 : 1 mixtures of sequence complementary oligomers all form stable duplexes. Duplex stability was quantified using DMSO denaturation experiments, which show that the association constant for duplex formation increases by an order of magnitude for every base-pairing interaction added to the chain, from 103 M-1 for ADA·DAD to 105 M-1 for ADDDA·DAAAD. Intramolecular folding is the major pathway that competes with duplex formation between recognition-encoded oligomers and limits the fidelity of sequence-selective assembly. The experimental approach described here provides a practical strategy for rapid evaluation of suitability for the development of programmable synthetic polymers.
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Affiliation(s)
- Giulia Iadevaia
- Yusuf Hamied Department of Chemistry, University of Cambridge Lensfield Road Cambridge CB2 1EW UK
| | - Jonathan A Swain
- Yusuf Hamied Department of Chemistry, University of Cambridge Lensfield Road Cambridge CB2 1EW UK
| | - Diego Núñez-Villanueva
- Yusuf Hamied Department of Chemistry, University of Cambridge Lensfield Road Cambridge CB2 1EW UK
| | - Andrew D Bond
- Yusuf Hamied Department of Chemistry, University of Cambridge Lensfield Road Cambridge CB2 1EW UK
| | - Christopher A Hunter
- Yusuf Hamied Department of Chemistry, University of Cambridge Lensfield Road Cambridge CB2 1EW UK
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16
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Pal S, Nguyen DPT, Molliet A, Alizadeh M, Crochet A, Ortuso RD, Petri-Fink A, Kilbinger AFM. A versatile living polymerization method for aromatic amides. Nat Chem 2021; 13:705-713. [PMID: 34103692 DOI: 10.1038/s41557-021-00712-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Accepted: 04/23/2021] [Indexed: 11/09/2022]
Abstract
Polycondensation polymers typically follow step-growth kinetics assuming all functional groups are equally likely to react with one another. If the reaction rates with the chain end can be selectively accelerated, living polymers can be obtained. Here we report on two chlorophosphonium iodide reagents that have been synthesized from triphenylphosphine and tri(o-methoxyphenyl)phosphine. The former activates aromatic carboxylic acids as acid chlorides in the presence of secondary aromatic amines and the latter even in the presence of primary aromatic amines. These reagents allow p-aminobenzoic acid derivatives to form solution-stable activated monomers that polymerize in a living fashion in the presence of amine initiators. Other aryl amino acids and even dimers of aryl amino acids can be polymerized in a living fashion when slowly added to the phosphonium salt in the presence of an amine initiator. Diblock copolymers and triblock terpolymers of aryl amino acids can be prepared even in the presence of electrophilic functional groups.
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Affiliation(s)
- Subhajit Pal
- Department of Chemistry, University of Fribourg, Fribourg, Switzerland
| | | | - Angélique Molliet
- Department of Chemistry, University of Fribourg, Fribourg, Switzerland
| | - Mahshid Alizadeh
- Department of Chemistry, University of Fribourg, Fribourg, Switzerland
| | - Aurélien Crochet
- Department of Chemistry, University of Fribourg, Fribourg, Switzerland
| | - Roberto D Ortuso
- Adolphe Merkle Institute, University of Fribourg, Fribourg, Switzerland
| | - Alke Petri-Fink
- Department of Chemistry, University of Fribourg, Fribourg, Switzerland.,Adolphe Merkle Institute, University of Fribourg, Fribourg, Switzerland
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17
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Gauthier M, Koehler V, Clavel C, Kauffmann B, Huc I, Ferrand Y, Coutrot F. Interplay between a Foldamer Helix and a Macrocycle in a Foldarotaxane Architecture. Angew Chem Int Ed Engl 2021; 60:8380-8384. [PMID: 33475210 DOI: 10.1002/anie.202100349] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Indexed: 11/07/2022]
Abstract
The design and synthesis of a novel rotaxane/foldaxane hybrid architecture is reported. The winding of an aromatic oligoamide helix host around a dumbbell-shaped thread-like guest, or axle, already surrounded by a macrocycle was evidenced by NMR spectroscopy and X-ray crystallography. The process proved to depend on the position of the macrocycle along the axle and the associated steric hindrance. The macrocycle thus behaves as a switchable shield that modulates the affinity of the helix for the axle. Reciprocally, the foldamer helix acts as a supramolecular auxiliary that compartmentalizes the axle. In some cases, the macrocycle is forced to move along the axle to allow the foldamer to reach its best recognition site.
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Affiliation(s)
- Maxime Gauthier
- Supramolecular Machines and ARchitectures Team, Institut des Biomolécules Max Mousseron (IBMM) UMR 5247 CNRS, Université de Montpellier, ENSCM, case courrier 1706, Bâtiment Chimie (17), 3ème étage, Faculté des Sciences, Place Eugène Bataillon, 34095, Montpellier cedex 5, France
| | - Victor Koehler
- Institut de Chimie et Biologie des Membranes et Nano-objets CBMN (UMR5248), Université de Bordeaux, CNRS, IPB, 2 rue Robert Escarpit, 33600, Pessac, France
| | - Caroline Clavel
- Supramolecular Machines and ARchitectures Team, Institut des Biomolécules Max Mousseron (IBMM) UMR 5247 CNRS, Université de Montpellier, ENSCM, case courrier 1706, Bâtiment Chimie (17), 3ème étage, Faculté des Sciences, Place Eugène Bataillon, 34095, Montpellier cedex 5, France
| | - Brice Kauffmann
- Université de Bordeaux, CNRS, INSERM, UMS3033, IECB, 2 rue Robert Escarpit, 33600, Pessac, France
| | - Ivan Huc
- Department of Pharmacy and Center for Integrated Protein Science, Ludwig-Maximilians-Universität, Butenandtstr. 5-13, 81377, München, Germany
| | - Yann Ferrand
- Institut de Chimie et Biologie des Membranes et Nano-objets CBMN (UMR5248), Université de Bordeaux, CNRS, IPB, 2 rue Robert Escarpit, 33600, Pessac, France
| | - Frédéric Coutrot
- Supramolecular Machines and ARchitectures Team, Institut des Biomolécules Max Mousseron (IBMM) UMR 5247 CNRS, Université de 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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18
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Gauthier M, Koehler V, Clavel C, Kauffmann B, Huc I, Ferrand Y, Coutrot F. Interplay between a Foldamer Helix and a Macrocycle in a Foldarotaxane Architecture. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202100349] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Maxime Gauthier
- Supramolecular Machines and ARchitectures Team Institut des Biomolécules Max Mousseron (IBMM) UMR 5247 CNRS Université de Montpellier ENSCM, case courrier 1706, Bâtiment Chimie (17), 3ème étage Faculté des Sciences Place Eugène Bataillon 34095 Montpellier cedex 5 France
| | - Victor Koehler
- Institut de Chimie et Biologie des Membranes et Nano-objets CBMN (UMR5248) Université de Bordeaux CNRS, IPB 2 rue Robert Escarpit 33600 Pessac France
| | - Caroline Clavel
- Supramolecular Machines and ARchitectures Team Institut des Biomolécules Max Mousseron (IBMM) UMR 5247 CNRS Université de Montpellier ENSCM, case courrier 1706, Bâtiment Chimie (17), 3ème étage Faculté des Sciences Place Eugène Bataillon 34095 Montpellier cedex 5 France
| | - Brice Kauffmann
- Université de Bordeaux CNRS INSERM, UMS3033 IECB 2 rue Robert Escarpit 33600 Pessac France
| | - Ivan Huc
- Department of Pharmacy and Center for Integrated Protein Science Ludwig-Maximilians-Universität Butenandtstr. 5–13 81377 München Germany
| | - Yann Ferrand
- Institut de Chimie et Biologie des Membranes et Nano-objets CBMN (UMR5248) Université de Bordeaux CNRS, IPB 2 rue Robert Escarpit 33600 Pessac France
| | - Frédéric Coutrot
- Supramolecular Machines and ARchitectures Team Institut des Biomolécules Max Mousseron (IBMM) UMR 5247 CNRS Université de 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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19
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Mateus P, Jacquet A, Méndez-Ardoy A, Boulloy A, Kauffmann B, Pecastaings G, Buffeteau T, Ferrand Y, Bassani DM, Huc I. Sensing a binding event through charge transport variations using an aromatic oligoamide capsule. Chem Sci 2021; 12:3743-3750. [PMID: 34163648 PMCID: PMC8179446 DOI: 10.1039/d0sc06060g] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Accepted: 01/21/2021] [Indexed: 12/31/2022] Open
Abstract
The selective binding properties of a 13-mer oligoamide foldamer capsule composed of 4 different aromatic subunits are reported. The capsule was designed to recognize dicarboxylic acids through multiple-point interactions owing to a combination of protonation/deprotonation events, H-bonding, and geometrical constraints imparted by the rigidity of the foldamer backbone. Compared to tartaric acid, binding of 2,2-difluorosuccinic acid or 2,2,3,3-tetrafluorosuccinic acid resulted in symmetry breaking due to deprotonation of only one of the two carboxylic acid groups of the encapsulated species as shown by NMR studies in solution and by single-crystal X-ray diffraction in the solid state. An analogous 14-mer foldamer capsule terminated with a thiol anchoring group was used to probe the complexation event in self-assembled monolayers on Au substrates. Ellipsometry and polarization-modulation infrared absorption-reflection spectroscopy studies were consistent with the formation of a single molecule layer of the foldamer capsule oriented vertically with respect to the surface. The latter underwent smooth complexation of 2,2-difluorosuccinic acid with deprotonation of one of the two carboxylic acid groups. A significant (80-fold) difference in the charge transport properties of the monolayer upon encapsulation of the dicarboxylic acid was evidenced from conducting-AFM measurements (S = 1.1 × 10-9 vs. 1.4 × 10-11 ohm-1 for the empty and complexed capsule, respectively). The modulation in conductivity was assigned to protonation of the aromatic foldamer backbone.
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Affiliation(s)
- Pedro Mateus
- Univ. Bordeaux, CNRS, Bordeaux INP, UMR 5248 CBMN, IECB 2 rue Escarpit 33600 Pessac France
| | - Antoine Jacquet
- Univ. Bordeaux, CNRS, Bordeaux INP, UMR 5248 CBMN, IECB 2 rue Escarpit 33600 Pessac France
| | | | - Alice Boulloy
- Univ. Bordeaux, CNRS, Bordeaux INP, UMR 5248 CBMN, IECB 2 rue Escarpit 33600 Pessac France
| | - Brice Kauffmann
- Univ. Bordeaux, CNRS UMS 3033/US001 IECB 2 rue Escarpit 33600 Pessac France
| | - Gilles Pecastaings
- Inst. Polytechnique de Bordeaux, CNRS UMR 5629 LCPO 16, Av. Pey-Berland 33600 Pessac France
| | - Thierry Buffeteau
- Univ. Bordeaux, CNRS UMR 5255 ISM 351, Cours de la Libération 33405 Talence France
| | - Yann Ferrand
- Univ. Bordeaux, CNRS, Bordeaux INP, UMR 5248 CBMN, IECB 2 rue Escarpit 33600 Pessac France
| | - Dario M Bassani
- Univ. Bordeaux, CNRS UMR 5255 ISM 351, Cours de la Libération 33405 Talence France
| | - Ivan Huc
- Univ. Bordeaux, CNRS, Bordeaux INP, UMR 5248 CBMN, IECB 2 rue Escarpit 33600 Pessac France
- Department of Pharmacy and Center for Integrated Protein Science, Ludwig-Maximilians-Universität Butenandstraße 5-13 81377 Munich Germany
- Cluster of Excellence e-Conversion 85748 Garching Germany
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20
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Pei Q, Ding A, Wu J. Supramolecular Assemblies Based on Intramolecular Three-Center Hydrogen Bond and their Applications. CHINESE J ORG CHEM 2021. [DOI: 10.6023/cjoc202005053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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21
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Reddy JP. Crystal structure and Hirshfeld surface analysis of di-chlorido-(methanol-κ O)bis-(2-methyl-pyridine-κ N)copper(II). Acta Crystallogr E Crystallogr Commun 2020; 76:1771-1774. [PMID: 33209351 PMCID: PMC7643234 DOI: 10.1107/s2056989020014036] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Accepted: 10/20/2020] [Indexed: 11/10/2022]
Abstract
In the title complex, [CuCl2(C6H7N)2(CH3OH)], the copper atom is five-coordinated by two nitro-gen atoms of 2-methyl-pyridine ligands, two chloro ligands and an oxygen atom of the methanol mol-ecule, being in a tetra-gonal-pyramidal environment with N and Cl atoms forming the basal plane. In the crystal, complex mol-ecules related by the twofold rotation axis are joined into dimeric units by pairs of O-H⋯Cl hydrogen bonds. These dimeric units are assembled through C-H⋯Cl inter-actions into layers parallel to (001).
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Affiliation(s)
- J. Prakasha Reddy
- Department of Chemistry, School of Sciences, Indrashil University, Rajpur, Gujarat, 382740, India
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22
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Liu P, Hao W, Bian X, Mei D. The shuttling mechanism of foldaxanes: more than just translocation and rotation. Phys Chem Chem Phys 2020; 22:12967-12972. [PMID: 32490445 DOI: 10.1039/d0cp01952f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Tailoring the structures of nanomachines to achieve specific functions is one of the major challenges in chemistry. Disentangling the different movements of nanomachines is critical to characterize their functions. Here, the motions within one kind of molecular machine, a foldaxane, composed of a foldamer with a spring-like conformation on an axle have been examined at the molecular level. With the aid of molecular dynamics simulations and enhanced sampling methods, the free-energy landscape characterizing the shuttling of the foldaxane has been drawn. The calculated free-energy barrier, amounting to 20.7 kcal mol-1, is in good agreement with experiments. Further analysis reveals that the predominant contribution to the free-energy barrier stems from the disruption of the hydrogen bonds between the foldamer and the thread. In the absence of hydrogen bonding interactions between the terminals of the foldamer and the thread, shrinkage and swelling movements of the foldamer have been identified and investigated in detail. By deciphering the intricate mechanism of how the foldaxane shuttles, our understanding of motions within molecular machines is expected to be improved, which will, in turn, assist the construction of molecular machines with specific functions.
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Affiliation(s)
- Peng Liu
- School of Chemistry and Chemical Engineering, State Key Laboratory of Separation Membranes and Membrane Processes, Tiangong University, Tianjin, 300387, China.
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23
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Xu K, Zhang Z, Yu C, Wang B, Dong M, Zeng X, Gou R, Cui L, Li C. A Modular Synthetic Strategy for Functional Macrocycles. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202000909] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Kaidi Xu
- Key Laboratory of Inorganic-Organic Hybrid Functional Material ChemistryMinistry of EducationTianjin Key Laboratory of Structure and Performance for Functional MoleculesCollege of ChemistryTianjin Normal University Tianjin 300387 P. R. China
- Center for Supramolecular Chemistry and Catalysis and Department of ChemistryShanghai University Shanghai 200444 P. R. China
| | - Zhi‐Yuan Zhang
- Key Laboratory of Inorganic-Organic Hybrid Functional Material ChemistryMinistry of EducationTianjin Key Laboratory of Structure and Performance for Functional MoleculesCollege of ChemistryTianjin Normal University Tianjin 300387 P. R. China
| | - Chengmao Yu
- Key Laboratory of Inorganic-Organic Hybrid Functional Material ChemistryMinistry of EducationTianjin Key Laboratory of Structure and Performance for Functional MoleculesCollege of ChemistryTianjin Normal University Tianjin 300387 P. R. China
- Center for Supramolecular Chemistry and Catalysis and Department of ChemistryShanghai University Shanghai 200444 P. R. China
| | - Bin Wang
- Key Laboratory of Inorganic-Organic Hybrid Functional Material ChemistryMinistry of EducationTianjin Key Laboratory of Structure and Performance for Functional MoleculesCollege of ChemistryTianjin Normal University Tianjin 300387 P. R. China
| | - Ming Dong
- Key Laboratory of Inorganic-Organic Hybrid Functional Material ChemistryMinistry of EducationTianjin Key Laboratory of Structure and Performance for Functional MoleculesCollege of ChemistryTianjin Normal University Tianjin 300387 P. R. China
| | - Xianqiang Zeng
- Center for Supramolecular Chemistry and Catalysis and Department of ChemistryShanghai University Shanghai 200444 P. R. China
| | - Rui Gou
- Center for Supramolecular Chemistry and Catalysis and Department of ChemistryShanghai University Shanghai 200444 P. R. China
| | - Lei Cui
- Center for Supramolecular Chemistry and Catalysis and Department of ChemistryShanghai University Shanghai 200444 P. R. China
| | - Chunju Li
- Key Laboratory of Inorganic-Organic Hybrid Functional Material ChemistryMinistry of EducationTianjin Key Laboratory of Structure and Performance for Functional MoleculesCollege of ChemistryTianjin Normal University Tianjin 300387 P. R. China
- Center for Supramolecular Chemistry and Catalysis and Department of ChemistryShanghai University Shanghai 200444 P. R. China
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24
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Xu K, Zhang ZY, Yu C, Wang B, Dong M, Zeng X, Gou R, Cui L, Li C. A Modular Synthetic Strategy for Functional Macrocycles. Angew Chem Int Ed Engl 2020; 59:7214-7218. [PMID: 32052539 DOI: 10.1002/anie.202000909] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Indexed: 12/15/2022]
Abstract
Reported here is a molecule-Lego synthetic strategy for macrocycles with functional skeletons, involving one-pot and high-yielding condensation between bis(2,4-dimethoxyphenyl)arene monomers and paraformaldehyde. By changing the blocks, variously functional units (naphthalene, pyrene, anthraquinone, porphyrin, etc.) can be conveniently introduced into the backbone of macrocycles. Interestingly, the macrocyclization can be tuned by the geometrical configuration of monomeric blocks. Linear (180°) monomer yield cyclic trimers and pentamers, while V-shaped (120°, 90° and 60°) monomers tend to form dimers. More significantly, even heterogeneous macrocycles are obtained in moderate yield by co-oligomerization of different monomers. This series of macrocycles have the potential to be prosperous in the near future.
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Affiliation(s)
- Kaidi Xu
- Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry, Ministry of Education, Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University, Tianjin, 300387, P. R. China.,Center for Supramolecular Chemistry and Catalysis and Department of Chemistry, Shanghai University, Shanghai, 200444, P. R. China
| | - Zhi-Yuan Zhang
- Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry, Ministry of Education, Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University, Tianjin, 300387, P. R. China
| | - Chengmao Yu
- Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry, Ministry of Education, Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University, Tianjin, 300387, P. R. China.,Center for Supramolecular Chemistry and Catalysis and Department of Chemistry, Shanghai University, Shanghai, 200444, P. R. China
| | - Bin Wang
- Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry, Ministry of Education, Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University, Tianjin, 300387, P. R. China
| | - Ming Dong
- Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry, Ministry of Education, Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University, Tianjin, 300387, P. R. China
| | - Xianqiang Zeng
- Center for Supramolecular Chemistry and Catalysis and Department of Chemistry, Shanghai University, Shanghai, 200444, P. R. China
| | - Rui Gou
- Center for Supramolecular Chemistry and Catalysis and Department of Chemistry, Shanghai University, Shanghai, 200444, P. R. China
| | - Lei Cui
- Center for Supramolecular Chemistry and Catalysis and Department of Chemistry, Shanghai University, Shanghai, 200444, P. R. China
| | - Chunju Li
- Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry, Ministry of Education, Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University, Tianjin, 300387, P. R. China.,Center for Supramolecular Chemistry and Catalysis and Department of Chemistry, Shanghai University, Shanghai, 200444, P. R. China
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25
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Jia F, Schröder HV, Yang LP, von Essen C, Sobottka S, Sarkar B, Rissanen K, Jiang W, Schalley CA. Redox-Responsive Host-Guest Chemistry of a Flexible Cage with Naphthalene Walls. J Am Chem Soc 2020; 142:3306-3310. [PMID: 32013425 DOI: 10.1021/jacs.9b11685] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
"Naphthocage", a naphthalene-based organic cage, reveals very strong binding (up to 1010 M-1) to aromatic (di)cationic guests, i.e., the tetrathiafulvalene mono- and dication and methyl viologen. Intercalation of the guests between two naphthalene walls is mediated by C-H···O, C-H···π, and cation···π interactions. The guests can be switched into and out of the cage by redox processes with high binding selectivity. Oxidation of the flexible cage itself in the absence of a guest leads to a stable radical cation with the oxidized naphthalene intercalated between and stabilized by the other two. Encapsulated guest cations are released from the cavity upon cage oxidation, paving the way to future applications in redox-controlled guest release or novel stimuli-responsive materials.
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Affiliation(s)
- Fei Jia
- Institut für Chemie und Biochemie , Freie Universität Berlin , Takustraße 3 , 14195 Berlin , Germany.,Department of Chemistry and Shenzhen Grubbs Institute , Southern University of Science and Technology , Xueyuan Boulevard 1088 , Shenzhen 518055 , China
| | - Hendrik V Schröder
- Institut für Chemie und Biochemie , Freie Universität Berlin , Takustraße 3 , 14195 Berlin , Germany
| | - Liu-Pan Yang
- Department of Chemistry and Shenzhen Grubbs Institute , Southern University of Science and Technology , Xueyuan Boulevard 1088 , Shenzhen 518055 , China
| | - Carolina von Essen
- Department of Chemistry , University of Jyvaskyla , P.O. Box 35, 40014 Jyväskylä , Finland
| | - Sebastian Sobottka
- Institut für Chemie und Biochemie , Freie Universität Berlin , Fabeckstraße 34/36 , 14195 Berlin , Germany
| | - Biprajit Sarkar
- Institut für Chemie und Biochemie , Freie Universität Berlin , Fabeckstraße 34/36 , 14195 Berlin , Germany
| | - Kari Rissanen
- Department of Chemistry , University of Jyvaskyla , P.O. Box 35, 40014 Jyväskylä , Finland
| | - Wei Jiang
- Department of Chemistry and Shenzhen Grubbs Institute , Southern University of Science and Technology , Xueyuan Boulevard 1088 , Shenzhen 518055 , China
| | - Christoph A Schalley
- Institut für Chemie und Biochemie , Freie Universität Berlin , Takustraße 3 , 14195 Berlin , Germany
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26
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Debnath M, Sasmal S, Podder D, Haldar D. Pentapeptide Nanoreactor as a Platform for Halogenations, Diels-Alder Reaction, and Morita-Baylis-Hillman Reaction. ACS OMEGA 2019; 4:13872-13878. [PMID: 31497704 PMCID: PMC6714524 DOI: 10.1021/acsomega.9b01393] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Accepted: 07/30/2019] [Indexed: 05/15/2023]
Abstract
A pentapeptide nanoreactor has been designed and synthesized as a platform to carry out the traditional organic reactions such as bromination, iodination, cycloaddition, and condensation reactions. The pentapeptide Boc-Phe-Phe-Aib-Phe-Phe-OMe with a supramolecular helical structure and π-rich channel provides nanoconfinements and thus facilitates the organic reactions. Bromination and iodination of aniline take place without any halogen carrier (Lewis acid) in the pentapeptide platform. Iodination produced p-iodoaniline only. The Diels-Alder reaction between furan and maleic anhydride increased 2-fold in the pentapeptide platform and the Morita-Baylis-Hillman reaction of benzaldehyde and ethyl acrylate in methanol enhanced 1.5-fold.
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27
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Wang X, Gan Q, Wicher B, Ferrand Y, Huc I. Directional Threading and Sliding of a Dissymmetrical Foldamer Helix on Dissymmetrical Axles. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201813125] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Xiang Wang
- CBMN (UMR5248)Univ. Bordeaux—CNRS—IPBInstitut Européen de Chimie et Biologie 2 rue Escarpit 33600 Pessac France
| | - Quan Gan
- CBMN (UMR5248)Univ. Bordeaux—CNRS—IPBInstitut Européen de Chimie et Biologie 2 rue Escarpit 33600 Pessac France
| | - Barbara Wicher
- Department of Chemical Technology of DrugsPoznan University of Medical Sciences Grunwaldzka 6 60–780 Poznan Poland
| | - Yann Ferrand
- CBMN (UMR5248)Univ. Bordeaux—CNRS—IPBInstitut Européen de Chimie et Biologie 2 rue Escarpit 33600 Pessac France
| | - Ivan Huc
- CBMN (UMR5248)Univ. Bordeaux—CNRS—IPBInstitut Européen de Chimie et Biologie 2 rue Escarpit 33600 Pessac France
- Department Pharmazie and Center for Integrated Protein ScienceLudwig-Maximilians-Universität Butenandtstrasse 5–13 81377 München Germany
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28
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Wang X, Gan Q, Wicher B, Ferrand Y, Huc I. Directional Threading and Sliding of a Dissymmetrical Foldamer Helix on Dissymmetrical Axles. Angew Chem Int Ed Engl 2019; 58:4205-4209. [PMID: 30652404 DOI: 10.1002/anie.201813125] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Indexed: 12/20/2022]
Abstract
We have investigated the self-assembly of a dissymmetrical aromatic oligoamide helix on linear amido-carbamate rods. A dissymmetric sequence bearing two differentiated ends is able to wrap around dissymmetric dumbbell guest molecules. Structural and thermodynamic investigations allowed us to decipher the mode of binding of the helix that can bind specifically to the amide and carbamate groups of the rod. In parallel kinetic studies of threading and sliding of the helix along linear axles were also monitored by 1 H NMR. Results show that threading of a dissymmetrical host can be kinetically biased by the nature of the guest terminus allowing a preferential sense of sliding of the helix. The study presented below further demonstrates the valuable potential of foldaxanes to combine designed molecular recognition patterns with fine control of self-assembly kinetics to conceive complex supramolecular events.
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Affiliation(s)
- Xiang Wang
- CBMN (UMR5248), Univ. Bordeaux-CNRS-IPB, Institut Européen de Chimie et Biologie, 2 rue Escarpit, 33600, Pessac, France
| | - Quan Gan
- CBMN (UMR5248), Univ. Bordeaux-CNRS-IPB, Institut Européen de Chimie et Biologie, 2 rue Escarpit, 33600, Pessac, France
| | - Barbara Wicher
- Department of Chemical Technology of Drugs, Poznan University of Medical Sciences, Grunwaldzka 6, 60-780, Poznan, Poland
| | - Yann Ferrand
- CBMN (UMR5248), Univ. Bordeaux-CNRS-IPB, Institut Européen de Chimie et Biologie, 2 rue Escarpit, 33600, Pessac, France
| | - Ivan Huc
- CBMN (UMR5248), Univ. Bordeaux-CNRS-IPB, Institut Européen de Chimie et Biologie, 2 rue Escarpit, 33600, Pessac, France.,Department Pharmazie and Center for Integrated Protein Science, Ludwig-Maximilians-Universität, Butenandtstrasse 5-13, 81377, München, Germany
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29
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Xing X, Zhao Y. Aromatically functionalized pseudo-crown ethers with unusual solvent response and enhanced binding properties. Org Biomol Chem 2019; 16:1627-1631. [PMID: 29446435 DOI: 10.1039/c8ob00100f] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Conformational flexibility in the host's structure is often considered detrimental to its binding. Flexible pseudo-crown ethers with aromatic donor/acceptor groups at the chain ends, however, displayed enhanced binding affinity and selectivity, particularly when the direct binding interactions were compromised by unfavorable solvents.
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Affiliation(s)
- Xiaoyu Xing
- Department of Chemistry, Iowa State University, Ames, Iowa 50011-3111, USA.
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30
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Faour L, Adam C, Gautier C, Goeb S, Allain M, Levillain E, Canevet D, Sallé M. Redox-controlled hybridization of helical foldamers. Chem Commun (Camb) 2019; 55:5743-5746. [DOI: 10.1039/c9cc02498k] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Redox stimulations allow controlling the hybridization equilibrium of foldamers.
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Affiliation(s)
- Lara Faour
- Laboratoire MOLTECH-Anjou
- UMR CNRS 6200
- UNIV Angers
- SFR MATRIX
- 49045 Angers Cedex
| | - Catherine Adam
- Laboratoire MOLTECH-Anjou
- UMR CNRS 6200
- UNIV Angers
- SFR MATRIX
- 49045 Angers Cedex
| | - Christelle Gautier
- Laboratoire MOLTECH-Anjou
- UMR CNRS 6200
- UNIV Angers
- SFR MATRIX
- 49045 Angers Cedex
| | - Sébastien Goeb
- Laboratoire MOLTECH-Anjou
- UMR CNRS 6200
- UNIV Angers
- SFR MATRIX
- 49045 Angers Cedex
| | - Magali Allain
- Laboratoire MOLTECH-Anjou
- UMR CNRS 6200
- UNIV Angers
- SFR MATRIX
- 49045 Angers Cedex
| | - Eric Levillain
- Laboratoire MOLTECH-Anjou
- UMR CNRS 6200
- UNIV Angers
- SFR MATRIX
- 49045 Angers Cedex
| | - David Canevet
- Laboratoire MOLTECH-Anjou
- UMR CNRS 6200
- UNIV Angers
- SFR MATRIX
- 49045 Angers Cedex
| | - Marc Sallé
- Laboratoire MOLTECH-Anjou
- UMR CNRS 6200
- UNIV Angers
- SFR MATRIX
- 49045 Angers Cedex
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31
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Szczypiński FT, Gabrielli L, Hunter CA. Emergent supramolecular assembly properties of a recognition-encoded oligoester. Chem Sci 2019. [DOI: 10.1039/c9sc01669d] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
An oligoester containing an alternating sequence of hydrogen bonding donor and acceptor side-chains forms a supramolecular architecture that resembles the kissing stem-loops motif found in folded RNA.
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Affiliation(s)
| | - Luca Gabrielli
- Department of Chemistry
- University of Cambridge
- Cambridge CB2 1EW
- UK
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32
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Xiao T, Xu L, Wang J, Li ZY, Sun XQ, Wang L. Biomimetic folding of small organic molecules driven by multiple non-covalent interactions. Org Chem Front 2019. [DOI: 10.1039/c9qo00089e] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The supramolecular self-folding of UPy-based monomers with low molecular weight driven by multiple non-covalent interactions has been developed.
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Affiliation(s)
- Tangxin Xiao
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology
- School of Petrochemical Engineering
- Changzhou University
- Changzhou
- China
| | - Lixiang Xu
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology
- School of Petrochemical Engineering
- Changzhou University
- Changzhou
- China
| | - Jie Wang
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology
- School of Petrochemical Engineering
- Changzhou University
- Changzhou
- China
| | - Zheng-Yi Li
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology
- School of Petrochemical Engineering
- Changzhou University
- Changzhou
- China
| | - Xiao-Qiang Sun
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology
- School of Petrochemical Engineering
- Changzhou University
- Changzhou
- China
| | - Leyong Wang
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology
- School of Petrochemical Engineering
- Changzhou University
- Changzhou
- China
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33
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Ghosh A, Paul I, Saha S, Paululat T, Schmittel M. Machine Metathesis: Thermal and Catalyzed Exchange of Piston Rods in Multicomponent Nanorotor/Nanoslider Ensemble. Org Lett 2018; 20:7973-7976. [PMID: 30525699 DOI: 10.1021/acs.orglett.8b03541] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Three-component nanorotor R1 ( k298 = 80 kHz) and two-component slider-on-deck DS2 ( k298 = 440 kHz) were prepared from rotator S1 and stator [Cu3(1)]3+ and from S2 and deck D, respectively. Mixing of R1 with DS2 leads to clean metathesis, furnishing the slower nanodevices R2 ( k298 = 29.6 kHz) and DS1 ( k298 = 32.2 kHz). Exchange of the piston rods S1 and S2 is completed within 22 min (uncatalyzed) or 3 min (catalyzed) at 298 K.
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Affiliation(s)
- Amit Ghosh
- Center of Micro- and Nanochemistry and Engineering , University of Siegen, Organische Chemie I , Adolf-Reichwein-Str. 2 , D-57068 Siegen , Germany
| | - Indrajit Paul
- Center of Micro- and Nanochemistry and Engineering , University of Siegen, Organische Chemie I , Adolf-Reichwein-Str. 2 , D-57068 Siegen , Germany
| | - Suchismita Saha
- Center of Micro- and Nanochemistry and Engineering , University of Siegen, Organische Chemie I , Adolf-Reichwein-Str. 2 , D-57068 Siegen , Germany
| | - Thomas Paululat
- University of Siegen, Organische Chemie II , Adolf-Reichwein-Str. 2 , D-57068 Siegen , Germany
| | - Michael Schmittel
- Center of Micro- and Nanochemistry and Engineering , University of Siegen, Organische Chemie I , Adolf-Reichwein-Str. 2 , D-57068 Siegen , Germany
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34
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Liu Y, Parks FC, Zhao W, Flood AH. Sequence-Controlled Stimuli-Responsive Single–Double Helix Conversion between 1:1 and 2:2 Chloride-Foldamer Complexes. J Am Chem Soc 2018; 140:15477-15486. [DOI: 10.1021/jacs.8b09899] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Yun Liu
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, United States
| | - Fred C. Parks
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, United States
| | - Wei Zhao
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, United States
| | - Amar H. Flood
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, United States
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35
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Bej S, Ghosh P. Naphthalene containing amino-ether macrocycle based Cu(ii) templated [2]pseudorotaxanes and OFF/ON fluorescence switching via axle substitution. Dalton Trans 2018; 47:13408-13418. [PMID: 30183026 DOI: 10.1039/c8dt02848f] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
A new naphthalene containing macrocycle, NaphMC, and a new fluorophoric bidentate linear axle derivative of 5,5'-dimethyl-2,2'-bipyridine (L3) along with two other ligands 1,10-phenanthroline (L1) and 5,5'-dimethyl-2,2'-bipyridine (L2) are explored towards the synthesis of Cu(ii) templated [2]pseudorotaxanes. All ternary complexes are well characterized by ESI-MS, UV/Vis, EPR spectroscopy, elemental analysis and emission spectroscopic studies. Single crystal X-ray diffraction studies confirm the geometry around the Cu(ii) center as a distorted trigonal bipyramid via the contribution of [3 + 2] orthogonal motifs of the wheel (NaphMC) and the bidentate chelating ligands L1 and L2 in the cases of pseudorotaxanes, CuPR1 and CuPR2, respectively. Furthermore, the fluorescence "OFF" state of the fluorophoric axle L3 is achieved via threading it to the Cu(ii) complex of NaphMC, whereas fluorescence switching "ON" is demonstrated by the substitution of L3 of CuPR3 with a stronger chelating ligand L1.
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Affiliation(s)
- Somnath Bej
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Kolkata 700032, India.
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36
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Arifuzzaman MD, Zhao W, Zhao Y. Surface Ligands in the Imprinting and Binding of Molecularly Imprinted Cross-Linked Micelles. Supramol Chem 2018; 30:929-939. [PMID: 31223222 PMCID: PMC6585997 DOI: 10.1080/10610278.2018.1489540] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Accepted: 06/08/2018] [Indexed: 10/28/2022]
Abstract
Molecular recognition in water is challenging but water-soluble molecularly imprinted nanoparticle (MINP) receptors were produced readily by double cross-linking of surfactant micelles in the presence of suitable template molecules. When the micellar surface was decorated with different polyhydroxylated ligands, significant interactions could be introduced between the surface ligands and the template. Flexible surface ligands worked better than rigid ones to interact with the polar moiety of the template, especially for those template molecules whose water-exposed surface is not properly solvated by water. The importance of these hydrophilic interactions was examined in the context of different substrates, density of the surface ligands, and surface-cross-linking density of the MINP. Together with the hydrophobic interactions in the core, the surface hydrophilic interactions can be used to enhance the binding of guest molecules in water.
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Affiliation(s)
- M D Arifuzzaman
- Department of Chemistry, Iowa State University, Ames, Iowa 50011-3111, USA, Tel: +1-515-294-5845
| | - Wei Zhao
- Department of Chemistry, Iowa State University, Ames, Iowa 50011-3111, USA, Tel: +1-515-294-5845
| | - Yan Zhao
- Department of Chemistry, Iowa State University, Ames, Iowa 50011-3111, USA, Tel: +1-515-294-5845
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37
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Sharma A, Tiwari P, Dutt Konar A. The dominant role of side chains in supramolecular double helical organisation in synthetic tripeptides. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2018.01.018] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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38
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Liu CZ, Yan M, Wang H, Zhang DW, Li ZT. Making Molecular and Macromolecular Helical Tubes: Covalent and Noncovalent Approaches. ACS OMEGA 2018; 3:5165-5176. [PMID: 31458731 PMCID: PMC6641876 DOI: 10.1021/acsomega.8b00681] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Accepted: 04/30/2018] [Indexed: 05/21/2023]
Abstract
Aromatic foldamers possess well-defined cavity that can be stabilized by discrete intramolecular interactions including hydrogen bonding, solvophobicity, electrostatic repulsion, or coordination. Long foldamers can form dynamic deep helical tubular architectures that are not only structurally attractive but also useful hosts for guest encapsulation, chirality induction, delivery, and catalysis. This kind of helical tubular structures can be formed by single molecules or macromolecules or by connecting short-folded or helical segments through noncovalent or covalent forces. This perspective summarizes the recent advances on the construction of helical tubes and their properties and functions.
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Affiliation(s)
- Chuan-Zhi Liu
- Department
of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and
Innovative Materials, andCollaborative Innovation Centre of Chemistry for Energy
Materials (iChEM), Fudan University, 2205 Songhu Road, Shanghai 200438, China
| | - Meng Yan
- Department
of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and
Innovative Materials, andCollaborative Innovation Centre of Chemistry for Energy
Materials (iChEM), Fudan University, 2205 Songhu Road, Shanghai 200438, China
| | - Hui Wang
- Department
of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and
Innovative Materials, andCollaborative Innovation Centre of Chemistry for Energy
Materials (iChEM), Fudan University, 2205 Songhu Road, Shanghai 200438, China
| | - Dan-Wei Zhang
- Department
of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and
Innovative Materials, andCollaborative Innovation Centre of Chemistry for Energy
Materials (iChEM), Fudan University, 2205 Songhu Road, Shanghai 200438, China
- E-mail: (D.-W.Z.)
| | - Zhan-Ting Li
- Department
of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and
Innovative Materials, andCollaborative Innovation Centre of Chemistry for Energy
Materials (iChEM), Fudan University, 2205 Songhu Road, Shanghai 200438, China
- E-mail: (Z.-T.L.)
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39
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Mateus P, Wicher B, Ferrand Y, Huc I. Carbohydrate binding through first- and second-sphere coordination within aromatic oligoamide metallofoldamers. Chem Commun (Camb) 2018; 54:5078-5081. [PMID: 29707723 DOI: 10.1039/c8cc02360c] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Aromatic oligoamide capsules that fold upon metal binding recognize carbohydrate guests in solution as evidenced by CD and NMR titrations. Crystallographic data reveal that, besides their structural role, metal ions also contribute to guest recognition through either first- or second-sphere coordination.
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Affiliation(s)
- Pedro Mateus
- Université de Bordeaux, CNRS, Bordeaux Institut National Polytechnique, CBMN (UMR 5248), IECB, 2 rue Robert Escarpit, F-33600 Pessac, France.
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40
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Abstract
Despite having significant applications in building nanomachines, molecular rotors with the rotational speed modulations to multiple stages in a wide range of frequency have not yet been well established. Here, we report the discovery of a stimuli-responsive molecular rotor, the rotational speed of which in the slow-to-fast range could be modulated to at least four stages triggered by acid/base and metal cations. The rotor itself rotates rapidly at ambient or elevated temperature but displays a restricted rotation after deprotonation due to the produced intramolecular electrostatic repulsion. Subsequent addition of Li+ or Na+ cations introduces an electrostatic bridge to stabilize the transition state of the deprotonated rotor, thus giving a cation-radius-dependent acceleration of the rotation to render the rotor running at a mid-speed. All the stimuli are highly reversible. Our studies provide a conceptual approach for constructing multistage rotational-speed-changing molecular rotors, and further, the practical nanomachines. Molecular rotors with rotational speed modulation have not yet been well established. Here, the authors report a pH and metal cation triggered molecular rotor, which allows for a four stage speed modulation in the slow-to-fast frequency range.
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41
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Arrata I, Barnard A, Tomlinson DC, Wilson AJ. Interfacing native and non-native peptides: using Affimers to recognise α-helix mimicking foldamers. Chem Commun (Camb) 2018; 53:2834-2837. [PMID: 28217789 DOI: 10.1039/c6cc09395g] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Selection methods are used to identify Affimers that recognise α-helix mimicking N-alkylated aromatic oligoamides thus demonstrating foldamer and natural α-amino acid codes are compatible.
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Affiliation(s)
- Irene Arrata
- School of Chemistry, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, UK. and Astbury Centre for Structural Molecular Biology, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, UK
| | - Anna Barnard
- School of Chemistry, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, UK. and Astbury Centre for Structural Molecular Biology, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, UK
| | - Darren C Tomlinson
- Astbury Centre for Structural Molecular Biology, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, UK and School of Molecular and Cellular Biology, Faculty of Biological Sciences, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, UK
| | - Andrew J Wilson
- School of Chemistry, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, UK. and Astbury Centre for Structural Molecular Biology, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, UK
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42
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Duan L, Zhao Y. Selective Binding of Folic Acid and Derivatives by Imprinted Nanoparticle Receptors in Water. Bioconjug Chem 2018. [PMID: 29513991 DOI: 10.1021/acs.bioconjchem.8b00121] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Folate receptors are overexpressed on cancer cells and frequently used for targeted delivery. Creation of synthetic receptors to bind folic acid and its analogues in water, however, is challenging because of its complex hydrogen-bonding patterns and competition for hydrogen bonds from the solvent. Micellar imprinting within cross-linkable surfactants circumvented these problems because the nonpolar micellar environment strengthened the hydrogen bonds between the amide group in the surfactant and the template molecule. Incorporation of polymerizable thiouronium functional monomers further enhanced the binding through hydrogen-bond-reinforced ion pairs with the glutamate moiety of the template. The resulting imprinted micelles were able to bind folate and their analogues with submicromolar affinity and distinguish small changes in the hydrogen-bonding patterns as well as the number/position of carboxylic acids. The binding constant obtained was 2-3 orders of magnitude higher than those reported for small-molecule synthetic receptors. Our binding study also revealed interesting details in the binding. For example, the relative contributions of different segments of the molecule to the binding followed the order of carboxylates > pyrimidine ring > pyrazine ring.
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Affiliation(s)
- Likun Duan
- Department of Chemistry , Iowa State University , Ames , Iowa 50011-3111 , United States
| | - Yan Zhao
- Department of Chemistry , Iowa State University , Ames , Iowa 50011-3111 , United States
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43
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Mateus P, Wicher B, Ferrand Y, Huc I. Alkali and alkaline earth metal ion binding by a foldamer capsule: selective recognition of magnesium hydrate. Chem Commun (Camb) 2018; 53:9300-9303. [PMID: 28765843 DOI: 10.1039/c7cc05422j] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Alkali and alkaline earth metal ion binding by an aromatic oligoamide foldamer was shown to induce its folding into a helical capsule. CD and NMR titrations revealed tight and selective binding of Mg2+. Crystallographic studies demonstrated that, depending on the metal, binding may involve the first or second coordination spheres of the metal hydrates.
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Affiliation(s)
- Pedro Mateus
- Univ. Bordeaux and CNRS, CBMN (UMR 5248), IECB, 2 rue Robert Escarpit, F-33600 Pessac, France.
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44
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Wang W, Zhang C, Qi S, Deng X, Yang B, Liu J, Dong Z. A Switchable Helical Capsule for Encapsulation and Release of Potassium Ion. J Org Chem 2018; 83:1898-1902. [DOI: 10.1021/acs.joc.7b02840] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Wei Wang
- State Key Laboratory of Supramolecular
Structure and Materials, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, P. R. China
| | - Chenyang Zhang
- State Key Laboratory of Supramolecular
Structure and Materials, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, P. R. China
| | - Shuaiwei Qi
- State Key Laboratory of Supramolecular
Structure and Materials, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, P. R. China
| | - Xiaoli Deng
- State Key Laboratory of Supramolecular
Structure and Materials, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, P. R. China
| | - Bing Yang
- State Key Laboratory of Supramolecular
Structure and Materials, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, P. R. China
| | - Junqiu Liu
- State Key Laboratory of Supramolecular
Structure and Materials, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, P. R. China
| | - Zeyuan Dong
- State Key Laboratory of Supramolecular
Structure and Materials, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, P. R. China
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45
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Bar M, Maity D, Deb S, Das S, Baitalik S. Ru-Os dyads based on a mixed bipyridine-terpyridine bridging ligand: modulation of the rate of energy transfer and pH-induced luminescence switching in the infrared domain. Dalton Trans 2018; 46:12950-12963. [PMID: 28929158 DOI: 10.1039/c7dt02192e] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of heterobimetallic complexes of compositions [(bpy/phen)2Ru(dipy-Hbzim-tpy)Os (tpy-PhCH3/H2pbbzim)]4+ (bpy = 2,2'-bipyridine, phen = 1,10-phenanthroline, tpy-PhCH3 = 4'-(4-methylphenyl)-2,2':6',2''-terpyridine and H2pbbzim = 2,6-bis(benzimidazole-2-yl)pyridine)), derived from a heteroditopic bpy-tpy bridging ligand, were synthesized and thoroughly characterized in this work. The heterometallic complexes exhibit two successive one-electron reversible metal-centered oxidations corresponding to OsII/OsIII at lower potential and RuII/RuIII at higher potential. All the four dyads exhibit very intense, ligand centered absorption bands in the UV region and moderately intense MLCT bands in the visible region. The dyads also show intense infrared emission with the emission maximum spanning between 734 nm and 775 nm with reasonably long room temperature lifetimes varying between 30 ns and 104 ns. Both steady state and time resolved luminescence spectroscopic investigations indicate that efficient and fast intramolecular energy transfer from the 3MLCT state of the Ru(ii) center to the Os-center takes place in all the four dyads. In addition, the rate of energy transfer was found to depend on the terminal ligand on the Os-site. Due to the presence of a number of imidazole NH protons in the dyads, significant modulation of both the ground and excited state properties of the complexes was made possible by varying the pH of the solution. By varying the terminal ligand, pH-induced "on-off", "off-off-on" and "on-off-on" emission switching of the complexes was nicely demonstrated in the infrared region.
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Affiliation(s)
- Manoranjan Bar
- Department of Chemistry, Inorganic Chemistry Section, Jadavpur University, Kolkata 700032, India.
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46
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Xiong JB, Feng HT, Wang JH, Zhang C, Li B, Zheng YS. Tetraphenylethylene Foldamers with Double Hairpin-Turn Linkers, TNT-Binding Mode and Detection of Highly Diluted TNT Vapor. Chemistry 2018; 24:2004-2012. [DOI: 10.1002/chem.201705346] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2017] [Indexed: 12/17/2022]
Affiliation(s)
- Jia-Bin Xiong
- Key Laboratory for Chemistry of Energy Conversion and Storage Materials; Ministry of Education; School of Chemistry and Chemical Engineering; Huazhong University of Science and Technology; Wuhan 430074 P.R. China
| | - Hai-Tao Feng
- Key Laboratory for Chemistry of Energy Conversion and Storage Materials; Ministry of Education; School of Chemistry and Chemical Engineering; Huazhong University of Science and Technology; Wuhan 430074 P.R. China
| | - Jin-Hua Wang
- Key Laboratory for Chemistry of Energy Conversion and Storage Materials; Ministry of Education; School of Chemistry and Chemical Engineering; Huazhong University of Science and Technology; Wuhan 430074 P.R. China
| | - Chun Zhang
- College of Life Science and Technology; Huazhong University of, Science and Technology; Wuhan 430074 P.R. China
| | - Bao Li
- Key Laboratory for Chemistry of Energy Conversion and Storage Materials; Ministry of Education; School of Chemistry and Chemical Engineering; Huazhong University of Science and Technology; Wuhan 430074 P.R. China
| | - Yan-Song Zheng
- Key Laboratory for Chemistry of Energy Conversion and Storage Materials; Ministry of Education; School of Chemistry and Chemical Engineering; Huazhong University of Science and Technology; Wuhan 430074 P.R. China
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47
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Tiwari P, Biswas S, Verma R, Sharma A, Dutt Konar A. Porous Biomaterials via Side Chain-Side Chain Interactions of Tyrosine Analogue of Pyridine Carboxamides. ChemistrySelect 2018. [DOI: 10.1002/slct.201702304] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Priyanka Tiwari
- Department of Chemistry and School of Pharmaceutical Sciences; Rajiv Gandhi Technological University; Bhopal 462033, MP
| | - Soumava Biswas
- Department of Chemistry; IISER Bhopal; Bhopal Bypass Road, Bhauri Bhopal 462066
| | - Ritu Verma
- Department of Chemistry and School of Pharmaceutical Sciences; Rajiv Gandhi Technological University; Bhopal 462033, MP
| | - Ankita Sharma
- Department of Chemistry and School of Pharmaceutical Sciences; Rajiv Gandhi Technological University; Bhopal 462033, MP
| | - Anita Dutt Konar
- Department of Chemistry and School of Pharmaceutical Sciences; Rajiv Gandhi Technological University; Bhopal 462033, MP
- Department of Chemistry; IISER Bhopal; Bhopal Bypass Road, Bhauri Bhopal 462066
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48
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Wang Y, Tian Y, Chen YZ, Niu LY, Wu LZ, Tung CH, Yang QZ, Boulatov R. A light-driven molecular machine based on stiff stilbene. Chem Commun (Camb) 2018; 54:7991-7994. [DOI: 10.1039/c8cc04542a] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
We report a new molecular design for optically triggered nm-scale translation of a submolecular component relative to another.
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Affiliation(s)
- Yuan Wang
- Key Laboratory of Radiopharmaceuticals
- Ministry of Education
- College of Chemistry
- Beijing Normal University
- Beijing 100875
| | - Yancong Tian
- Department of Chemistry
- University of Liverpool
- Liverpool L69 7ZD
- UK
| | - Yu-Zhe Chen
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials
- Technical Institute of Physics and Chemistry
- Chinese Academy of Sciences
- Beijing 100190
- P. R. China
| | - Li-Ya Niu
- Key Laboratory of Radiopharmaceuticals
- Ministry of Education
- College of Chemistry
- Beijing Normal University
- Beijing 100875
| | - Li-Zhu Wu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials
- Technical Institute of Physics and Chemistry
- Chinese Academy of Sciences
- Beijing 100190
- P. R. China
| | - Chen-Ho Tung
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials
- Technical Institute of Physics and Chemistry
- Chinese Academy of Sciences
- Beijing 100190
- P. R. China
| | - Qing-Zheng Yang
- Key Laboratory of Radiopharmaceuticals
- Ministry of Education
- College of Chemistry
- Beijing Normal University
- Beijing 100875
| | - Roman Boulatov
- Department of Chemistry
- University of Liverpool
- Liverpool L69 7ZD
- UK
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49
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Huang F, Wang G, Ma L, Wang Y, Chen X, Che Y, Jiang H. Molecular Spur Gears Based on a Switchable Quinquepyridine Foldamer Acting as a Stator. J Org Chem 2017; 82:12106-12111. [DOI: 10.1021/acs.joc.7b01864] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Fu Huang
- CAS
Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P.R.China
- College
of Chemistry, Beijing Normal University, Beijing 100875, P.R.China
- University of Chinese Academy of Sciences, Beijing 100149, P.R.China
| | - Guangxia Wang
- CAS
Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P.R.China
- University of Chinese Academy of Sciences, Beijing 100149, P.R.China
| | - Lishuang Ma
- College
of Chemistry, Beijing Normal University, Beijing 100875, P.R.China
| | - Ying Wang
- College
of Chemistry, Beijing Normal University, Beijing 100875, P.R.China
| | - Xuebo Chen
- College
of Chemistry, Beijing Normal University, Beijing 100875, P.R.China
| | - Yanke Che
- CAS
Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P.R.China
| | - Hua Jiang
- CAS
Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P.R.China
- College
of Chemistry, Beijing Normal University, Beijing 100875, P.R.China
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50
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Gholami G, Zhu K, Baggi G, Schott E, Zarate X, Loeb SJ. Influence of axle length on the rate and mechanism of shuttling in rigid H-shaped [2]rotaxanes. Chem Sci 2017; 8:7718-7723. [PMID: 29568435 PMCID: PMC5851341 DOI: 10.1039/c7sc03736h] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2017] [Accepted: 09/22/2017] [Indexed: 01/19/2023] Open
Abstract
A series of [2]rotaxane molecular shuttles was prepared containing a dibenzo[24]crown-8 (DB24C8) wheel and a rigid H-shaped axle with varying track lengths between recognition sites; from 7.4 to 20.3 Å as defined by 1-4 phenyl rings or a naphthyl group. The rate of shuttling was measured by variable temperature 1H NMR spectroscopy for neutral compounds and EXSY experiments for dicationic species. The rates were found to be independent of the length of the axle, except when the distance between the two recognition sites might be short enough (n = 1) to allow the crown ether to simultaneously interact with both recognition sites providing a short-cut mechanism which could lower the energy barrier. This notion is supported by DFT calculations and solid-state characterization of model compounds that mimic possible transition states.
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Affiliation(s)
- Ghazale Gholami
- Department of Chemistry and Biochemistry , University of Windsor , Windsor , Ontario N9B 3P4 , Canada .
| | - Kelong Zhu
- School of Chemistry , Sun Yat-Sen University , Guangzhou , 510275 , P. R. China .
| | - Giorgio Baggi
- Department of Chemistry and Biochemistry , University of Windsor , Windsor , Ontario N9B 3P4 , Canada .
| | - Eduardo Schott
- Departamento de Química Inorgánica , Facultad de Química , Pontificia Universidad Católica de Chile , Avenida Vicuña Mackenna, 4860 , Santiago , Chile
| | - Ximena Zarate
- Instituto de Ciencias Químicas Aplicadas , Facultad de Ingeniería , Universidad Autónoma de Chile , Avenida Pedro de Valdivia 425 , Santiago , Chile
| | - Stephen J Loeb
- Department of Chemistry and Biochemistry , University of Windsor , Windsor , Ontario N9B 3P4 , Canada .
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