1
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Berry SN, Zou M, Nguyen SL, Sajowitz AE, Qin L, Lewis W, Jolliffe KA. Supramolecular Control of the Temperature Responsiveness of Fluorescent Macrocyclic Molecular Rotamers. Chemistry 2024; 30:e202400504. [PMID: 38499467 DOI: 10.1002/chem.202400504] [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: 02/04/2024] [Revised: 03/18/2024] [Accepted: 03/18/2024] [Indexed: 03/20/2024]
Abstract
To fully harness the potential of molecular machines, it is crucial to develop methods by which to exert control over their speed of motion through the application of external stimuli. A conformationally strained macrocyclic fluorescent rotamer, CarROT, displays a reproducible and linear fluorescence decrease towards temperature over the physiological temperature range. Through the external addition of anions, cations or through deprotonation, the compound can access four discreet rotational speeds via supramolecular interactions (very slow, slow, fast and very fast) which in turn stop, reduce or enhance the thermoluminescent properties due to increasing or decreasing non-radiative decay processes, thereby providing a means to externally control the temperature sensitivity of the system. Through comparison with analogues with a higher degree of conformational freedom, the high thermosensitivity of CarROT over the physiological temperature range was determined to be due to conformational strain, which causes a high energy barrier to rotation over this range. Analogues with a higher degree of conformational freedom display lower sensitivities towards temperature over the same temperature range. This study provides an example of an information rich small molecule, in which programable rotational speed states can be observed with facile read-out.
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Affiliation(s)
- Stuart N Berry
- School of Chemistry, The University of Sydney, NSW, 2006, Australia
| | - Meijun Zou
- School of Chemistry, The University of Sydney, NSW, 2006, Australia
| | - Sarah L Nguyen
- School of Chemistry, The University of Sydney, NSW, 2006, Australia
| | - Aidan E Sajowitz
- School of Chemistry, The University of Sydney, NSW, 2006, Australia
| | - Lei Qin
- School of Chemistry, The University of Sydney, NSW, 2006, Australia
| | - William Lewis
- School of Chemistry, The University of Sydney, NSW, 2006, Australia
- Sydney Analytical, The University of Sydney, NSW, 2006, Australia
| | - Katrina A Jolliffe
- School of Chemistry, The University of Sydney, NSW, 2006, Australia
- The University of Sydney Nano Institute (Sydney Nano), The University of Sydney, NSW, 2006, Australia
- Australian Research Council Centre of Excellence for Innovations in Peptide and Protein Science, The University of Sydney, NSW, 2006, Australia
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2
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Muñoz J. Rational Design of Stimuli-Responsive Inorganic 2D Materials via Molecular Engineering: Toward Molecule-Programmable Nanoelectronics. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2305546. [PMID: 37906953 DOI: 10.1002/adma.202305546] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Revised: 10/10/2023] [Indexed: 11/02/2023]
Abstract
The ability of electronic devices to act as switches makes digital information processing possible. Succeeding graphene, emerging inorganic 2D materials (i2DMs) have been identified as alternative 2D materials to harbor a variety of active molecular components to move the current silicon-based semiconductor technology forward to a post-Moore era focused on molecule-based information processing components. In this regard, i2DMs benefits are not only for their prominent physiochemical properties (e.g., the existence of bandgap), but also for their high surface-to-volume ratio rich in reactive sites. Nonetheless, since this field is still in an early stage, having knowledge of both i) the different strategies for molecularly functionalizing the current library of i2DMs, and ii) the different types of active molecular components is a sine qua non condition for a rational design of stimuli-responsive i2DMs capable of performing logical operations at the molecular level. Consequently, this Review provides a comprehensive tutorial for covalently anchoring ad hoc molecular components-as active units triggered by different external inputs-onto pivotal i2DMs to assess their role in the expanding field of molecule-programmable nanoelectronics for electrically monitoring bistable molecular switches. Limitations, challenges, and future perspectives of this emerging field which crosses materials chemistry with computation are critically discussed.
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Affiliation(s)
- Jose Muñoz
- Departament de Química, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Barcelona, 08193, Spain
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3
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Tilly DP, Morris DTJ, Clayden J. Anion-Dependent Hydrogen-Bond Polarity Switching in Ethylene-bridged Urea Oligomers. Chemistry 2023; 29:e202302210. [PMID: 37589333 PMCID: PMC10946793 DOI: 10.1002/chem.202302210] [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: 07/11/2023] [Revised: 08/07/2023] [Accepted: 08/16/2023] [Indexed: 08/18/2023]
Abstract
The reversible coordination of anions to an N,N'-disubstituted 3,5-bis(trifluoromethyl)phenylurea located at a terminus of a linear chain of ethylene-bridged hydrogen-bonded ureas triggers a cascade of conformational changes. A series of hydrogen-bond polarity reversals propagates along the oligomer, leading to a global switch of its hydrogen-bond directionality. The induced polarity switch, transmitted through four reversible urea groups, results in a change in emission and excitation wavelengths of a fluorophore located at the opposite terminus of the oligomer. The molecule thus behaves as a chemical sensor with a relayed remote spectroscopic response to variations in anion concentration. The polarity switch induced by anion concentration constitutes an artificial communication mechanism for conveying information through oligomeric structures.
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Affiliation(s)
- David P. Tilly
- School of ChemistryUniversity of Bristol Cantock's CloseBristolBS8 1TSUK
- Department of ChemistryUniversity of ManchesterOxford RoadManchesterM13 9PLUK
| | - David T. J. Morris
- School of ChemistryUniversity of Bristol Cantock's CloseBristolBS8 1TSUK
- Department of ChemistryUniversity of ManchesterOxford RoadManchesterM13 9PLUK
| | - Jonathan Clayden
- School of ChemistryUniversity of Bristol Cantock's CloseBristolBS8 1TSUK
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4
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McCann S, Roe WE, Agnew HE, Knipe PC. Non-Covalent Interactions Enforce Conformation in Switchable and Water-Soluble Diketopiperazine-Pyridine Foldamers. Angew Chem Int Ed Engl 2023; 62:e202307180. [PMID: 37414732 PMCID: PMC10952507 DOI: 10.1002/anie.202307180] [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: 05/22/2023] [Revised: 07/05/2023] [Accepted: 07/06/2023] [Indexed: 07/08/2023]
Abstract
To reach their potential as mimics of the dynamic molecules present in biological systems, foldamers must be designed to display stimulus-responsive behavior. Here we report such a foldamer architecture based on alternating pyridine-diketopiperazine linkers. Epimerization is conveniently prevented through a copper-catalyzed coupling protocol. The compounds' native unswitched conformation is first discovered in the solid and solution state. The foldamers can be solubilized in DMSO and pH 9.5 buffer, retaining conformational control to a large degree. Lastly, dynamic switching is demonstrated through treatment with acid, leading to behaviour we describe as stimulus-responsive sidechain reconfiguration.
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Affiliation(s)
- Sinead McCann
- School of Chemistry and Chemical EngineeringQueen's University BelfastDavid Keir Building, Stranmillis RoadBelfastBT9 5AGUK
| | - William E. Roe
- School of Chemistry and Chemical EngineeringQueen's University BelfastDavid Keir Building, Stranmillis RoadBelfastBT9 5AGUK
| | - Hannah E. Agnew
- School of Chemistry and Chemical EngineeringQueen's University BelfastDavid Keir Building, Stranmillis RoadBelfastBT9 5AGUK
| | - Peter C. Knipe
- School of Chemistry and Chemical EngineeringQueen's University BelfastDavid Keir Building, Stranmillis RoadBelfastBT9 5AGUK
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5
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Abstract
Heteroatom-centered diradical(oid)s have been in the focus of molecular main group chemistry for nearly 30 years. During this time, the diradical concept has evolved and the focus has shifted to the rational design of diradical(oid)s for specific applications. This review article begins with some important theoretical considerations of the diradical and tetraradical concept. Based on these theoretical considerations, the design of diradical(oid)s in terms of ligand choice, steric, symmetry, electronic situation, element choice, and reactivity is highlighted with examples. In particular, heteroatom-centered diradical reactions are discussed and compared with closed-shell reactions such as pericyclic additions. The comparison between closed-shell reactivity, which proceeds in a concerted manner, and open-shell reactivity, which proceeds in a stepwise fashion, along with considerations of diradical(oid) design, provides a rational understanding of this interesting and unusual class of compounds. The application of diradical(oid)s, for example in small molecule activation or as molecular switches, is also highlighted. The final part of this review begins with application-related details of the spectroscopy of diradical(oid)s, followed by an update of the heteroatom-centered diradical(oid)s and tetraradical(oid)s published in the last 10 years since 2013.
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Affiliation(s)
- Alexander Hinz
- Institut für Anorganische Chemie (AOC), Karlsruher Institut für Technologie (KIT), Engesserstrasse 15, 76131 Karlsruhe, Germany
| | - Jonas Bresien
- Institut für Chemie, Universität Rostock, Albert-Einstein-Strasse 3a, 18059 Rostock, Germany
| | - Frank Breher
- Institut für Anorganische Chemie (AOC), Karlsruher Institut für Technologie (KIT), Engesserstrasse 15, 76131 Karlsruhe, Germany
| | - Axel Schulz
- Institut für Chemie, Universität Rostock, Albert-Einstein-Strasse 3a, 18059 Rostock, Germany
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6
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Yin J, Birman VB. Phenazine-Based Oligomers as Redox-Responsive Molecular Actuators. J Org Chem 2022; 87:15744-15753. [PMID: 36354745 DOI: 10.1021/acs.joc.2c01445] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Nanosized butterfly-coil foldamers containing alternating phenazine-1,6-dicarboxamide and 2,5-dialkoxyterephthalamide moieties have been demonstrated to undergo extension-contraction in response to changing their oxidation state. Both the chemical (catalytic hydrogenation/aerial oxidation) and electrochemical versions of this process have been shown to be clean and fully reversible.
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Affiliation(s)
- Jingwei Yin
- Washington University Department of Chemistry, Campus Box 1134, One Brookings Drive, Saint Louis, Missouri 63130, United States
| | - Vladimir B Birman
- Washington University Department of Chemistry, Campus Box 1134, One Brookings Drive, Saint Louis, Missouri 63130, United States
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7
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Bruns CJ. Moving forward in the semantic soup of artificial molecular machine taxonomy. NATURE NANOTECHNOLOGY 2022; 17:1231-1234. [PMID: 36494473 DOI: 10.1038/s41565-022-01247-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Affiliation(s)
- Carson J Bruns
- ATLAS Institute, University of Colorado Boulder, Boulder, CO, USA.
- Paul M. Rady Department of Mechanical Engineering, University of Colorado Boulder, Boulder, CO, USA.
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8
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Formation of supramolecular channels by reversible unwinding-rewinding of bis(indole) double helix via ion coordination. Nat Commun 2022; 13:6507. [PMID: 36316309 PMCID: PMC9622825 DOI: 10.1038/s41467-022-34159-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Accepted: 10/14/2022] [Indexed: 12/03/2022] Open
Abstract
Stimulus-responsive reversible transformation between two structural conformers is an essential process in many biological systems. An example of such a process is the conversion of amyloid-β peptide into β-sheet-rich oligomers, which leads to the accumulation of insoluble amyloid in the brain, in Alzheimer's disease. To reverse this unique structural shift and prevent amyloid accumulation, β-sheet breakers are used. Herein, we report a series of bis(indole)-based biofunctional molecules, which form a stable double helix structure in the solid and solution state. In presence of chloride anion, the double helical structure unwinds to form an anion-coordinated supramolecular polymeric channel, which in turn rewinds upon the addition of Ag+ salts. Moreover, the formation of the anion-induced supramolecular ion channel results in efficient ion transport across lipid bilayer membranes with excellent chloride selectivity. This work demonstrates anion-cation-assisted stimulus-responsive unwinding and rewinding of artificial double-helix systems, paving way for smart materials with better biomedical applications.
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9
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Stimuli-responsive chirality inversion of metallohelices and related dynamic metal complexes. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2022.214582] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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10
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Tomasini M, Zhang J, Zhao H, Besalú E, Falivene L, Caporaso L, Szostak M, Poater A. A predictive journey towards trans-thioamides/amides. Chem Commun (Camb) 2022; 58:9950-9953. [PMID: 35983851 DOI: 10.1039/d2cc04228b] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The cis-trans isomerization of (thio)amides was studied by DFT calculations to get the model for the higher preference for the cis conformation by guided predictive chemistry, suggesting how to select the alkyl/aryl substituents on the C/N atoms that lead to the trans isomer. Multilinear analysis, together with cross-validation analysis, helped to select the best fitting parameters to achieve the energy barriers of the cis to trans interconversion, as well as the relative stability between both isomers. Double experimental check led to the synthesis of the best trans candidate with sterically demanding t-butyl substituents, confirming the utility of predictive chemistry, bridging organic and computational chemistry.
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Affiliation(s)
- Michele Tomasini
- Institut de Química Computacional i Catàlisi and Departament de Química, Universitat de Girona, C/Maria Aurèlia Capmany 69, 17003, Girona, Catalonia, Spain. .,Dipartimento di Chimica e Biologia, Università di Salerno, Via Ponte don Melillo, 84084, Fisciano, Italy
| | - Jin Zhang
- College of Chemistry and Chemical Engineering, Key Laboratory of Chemical Additives for China National Light Industry, Shaanxi University of Science and Technology, 6 Xuefu Road, Xi'an, 710021, China
| | - Hui Zhao
- College of Chemistry and Chemical Engineering, Key Laboratory of Chemical Additives for China National Light Industry, Shaanxi University of Science and Technology, 6 Xuefu Road, Xi'an, 710021, China
| | - Emili Besalú
- Institut de Química Computacional i Catàlisi and Departament de Química, Universitat de Girona, C/Maria Aurèlia Capmany 69, 17003, Girona, Catalonia, Spain.
| | - Laura Falivene
- Dipartimento di Chimica e Biologia, Università di Salerno, Via Ponte don Melillo, 84084, Fisciano, Italy
| | - Lucia Caporaso
- Dipartimento di Chimica e Biologia, Università di Salerno, Via Ponte don Melillo, 84084, Fisciano, Italy
| | - Michal Szostak
- Department of Chemistry, Rutgers University, 73 Warren Street, Newark, NJ, 07102, USA
| | - Albert Poater
- Institut de Química Computacional i Catàlisi and Departament de Química, Universitat de Girona, C/Maria Aurèlia Capmany 69, 17003, Girona, Catalonia, Spain.
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11
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Yeung JY, Kong FK, Hau FK, Chan MH, Ng M, Leung M, Yam VW. Solvent‐Dependent Supramolecular Host–Guest Assemblies of Platinum(II) Tweezers and a Guest System: From Discrete Molecules to High‐Ordered Oligomers. Angew Chem Int Ed Engl 2022; 61:e202207313. [DOI: 10.1002/anie.202207313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Indexed: 11/09/2022]
Affiliation(s)
- Jenny Yuk‐Wa Yeung
- Institute of Molecular Functional Materials Department of Chemistry The University of Hong Kong Pokfulam Road Hong Kong P. R. China
| | - Fred Ka‐Wai Kong
- Institute of Molecular Functional Materials Department of Chemistry The University of Hong Kong Pokfulam Road Hong Kong P. R. China
| | - Franky Ka‐Wah Hau
- Institute of Molecular Functional Materials Department of Chemistry The University of Hong Kong Pokfulam Road Hong Kong P. R. China
| | - Michael Ho‐Yeung Chan
- Institute of Molecular Functional Materials Department of Chemistry The University of Hong Kong Pokfulam Road Hong Kong P. R. China
| | - Maggie Ng
- Institute of Molecular Functional Materials Department of Chemistry The University of Hong Kong Pokfulam Road Hong Kong P. R. China
| | - Ming‐Yi Leung
- Institute of Molecular Functional Materials Department of Chemistry The University of Hong Kong Pokfulam Road Hong Kong P. R. China
| | - Vivian Wing‐Wah Yam
- Institute of Molecular Functional Materials Department of Chemistry The University of Hong Kong Pokfulam Road Hong Kong P. R. China
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12
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Helttunen K. Anion Responsive Molecular Switch Based on a Doubly‐Strapped Calix[4]pyrrole. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Kaisa Helttunen
- University of Jyväskylä Department of Chemistry, Nanoscience Center P.O.Box 35 FI-40013 University of Jyvaskyla FINLAND
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13
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Sugiarto S, Minato T, Sakiyama H, Sadakane M. Anion‐directed conformation switching and trigonal distortion in hexakis(methylamine)nickel(II) cations. Eur J Inorg Chem 2022. [DOI: 10.1002/ejic.202200386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Sugiarto Sugiarto
- Hiroshima University Applied Chemistry 1-4-1 Kagamiyama 7398527 Higashi-Hiroshima JAPAN
| | - Takuo Minato
- Hiroshima University: Hiroshima Daigaku Department of Applied Chemistry JAPAN
| | - Hiroshi Sakiyama
- Yamagata University: Yamagata Daigaku Department of Science, Faculty of Science JAPAN
| | - Masahiro Sadakane
- Hiroshima University: Hiroshima Daigaku Department of Applied Chemistry JAPAN
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14
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Hu WH, Zhou K, Liu L, Wu HC. Construction of a pH-Mediated Single-Molecule Switch with a Nanopore-DNA Complex. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2201650. [PMID: 35723176 DOI: 10.1002/smll.202201650] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 05/16/2022] [Indexed: 06/15/2023]
Abstract
A molecular switch is one of the simplest examples of artificial molecular machines. Even so, the development of molecular switches is still at its very early stage. Currently, building single-molecule switches mostly rely on the molecular junction technique, but many of their performance characteristics are device-dependent. Here, a pH-mediated single-molecule switch based on the combination of an α-hemolysin (αHL) nanopore and a hexacyclen-modified DNA strand is developed. The single-stranded DNA is suspended inside an αHL through biotin-streptavidin linkage and the hexacyclen-modified nucleobase interacts with amino acid residues at positions 111, 113, and 147 to cause current oscillations. Distinct current transitions are observed when pH is tuned back and forth in the range of 3.0-7.4, with a typical "up" level when pH > 6.5 and a "down" level when pH < 4.5. This nanopore-DNA complex possesses membrane-bound advantages and may find applications in single-cell studies where pH could be readily tuned to control ON-OFF functions.
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Affiliation(s)
- Wei-Hu Hu
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Ke Zhou
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Lei Liu
- Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China
| | - Hai-Chen Wu
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
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15
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Yeung JYW, Kong FKW, Hau FKW, Chan MHY, Ng M, Leung MY, Yam VWW. Solvent‐Dependent Supramolecular Host‐Guest Assemblies of Platinum(II) Tweezers and a Guest System: From Discrete Molecules to High‐Ordered Oligomers. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202207313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | | | | | | | - Maggie Ng
- The University of Hong Kong Chemistry CHINA
| | | | - Vivian W. W. Yam
- The University of Hong Kong Department of Chemistry Pokfulam RoadChong Yuet Ming Chemistry Building --- Hong Kong CHINA
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16
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Nakajima T. Computation by inverse causality: A universal principle to produce symbols for the external reality in living systems. Biosystems 2022; 218:104692. [DOI: 10.1016/j.biosystems.2022.104692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 04/04/2022] [Accepted: 04/29/2022] [Indexed: 11/16/2022]
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17
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Wang X, Quan M, Yao H, Pang XY, Ke H, Jiang W. Switchable bifunctional molecular recognition in water using a pH-responsive Endo-functionalized cavity. Nat Commun 2022; 13:2291. [PMID: 35484144 PMCID: PMC9051166 DOI: 10.1038/s41467-022-30012-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Accepted: 04/08/2022] [Indexed: 11/09/2022] Open
Abstract
The construction of water-soluble synthetic hosts with a stimuli-responsive endo-functionalized cavity is challenging. These hosts feature a switchable cavity and may bring new properties to the fields of self-assembly, molecular machines, and biomedical sciences. Herein, we report a pair of water-soluble naphthotubes with a pH-responsive endo-functionalized cavity. The inward-directing secondary amine group of the hosts can be protonated and deprotonated. Thus, the hosts have different cavity features at the two states and show drastically different binding preference and selectivity in water. We reveal that the binding difference of the two host states is originated from the differences in charge repulsion, hydrogen bonding and the hydrophobic effects. Moreover, the guest binding can be easily switched in a ternary mixture with two guest molecules by adjusting the pH value of the solution. These pH-responsive hosts may be used for the construction of smart self-assembly systems and water-soluble molecular machines.
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Affiliation(s)
- Xiaoping Wang
- Shenzhen Grubbs Institute, Guangdong Provincial Key Laboratory of Catalysis, and Department of Chemistry, Southern University of Science and Technology, Xueyuan Blvd 1088, 518055, Shenzhen, China
| | - Mao Quan
- Shenzhen Grubbs Institute, Guangdong Provincial Key Laboratory of Catalysis, and Department of Chemistry, Southern University of Science and Technology, Xueyuan Blvd 1088, 518055, Shenzhen, China
| | - Huan Yao
- Shenzhen Grubbs Institute, Guangdong Provincial Key Laboratory of Catalysis, and Department of Chemistry, Southern University of Science and Technology, Xueyuan Blvd 1088, 518055, Shenzhen, China
| | - Xin-Yu Pang
- Shenzhen Grubbs Institute, Guangdong Provincial Key Laboratory of Catalysis, and Department of Chemistry, Southern University of Science and Technology, Xueyuan Blvd 1088, 518055, Shenzhen, China
| | - Hua Ke
- Shenzhen Grubbs Institute, Guangdong Provincial Key Laboratory of Catalysis, and Department of Chemistry, Southern University of Science and Technology, Xueyuan Blvd 1088, 518055, Shenzhen, China
| | - Wei Jiang
- Shenzhen Grubbs Institute, Guangdong Provincial Key Laboratory of Catalysis, and Department of Chemistry, Southern University of Science and Technology, Xueyuan Blvd 1088, 518055, Shenzhen, China.
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18
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Mamane V, Weiss R, Cornaton Y, Khartabil H, Groslambert L, Hénon E, Pale P, Djukic JP. Deciphering the Role of Noncovalent Interactions in the Conformations of Dibenzo‐1,5‐dichalcogenocines. Chempluschem 2022; 87:e202100518. [DOI: 10.1002/cplu.202100518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Revised: 01/03/2022] [Indexed: 11/07/2022]
Affiliation(s)
- Victor Mamane
- University of Strasbourg: Universite de Strasbourg Institut of Chemistry 1 Rue Blaise Pascal 67008 Strasbourg FRANCE
| | - Robin Weiss
- Université de Strasbourg: Universite de Strasbourg Institut de Chimie de Strasbourg FRANCE
| | - Yann Cornaton
- Université de Strasbourg: Universite de Strasbourg Institut de Chimie de Strasbroug FRANCE
| | - Hassan Khartabil
- Université de Reims Champagne-Ardenne: Universite de Reims Champagne-Ardenne Institut de Chimie Moléculaire FRANCE
| | - Loïc Groslambert
- Universite de Strasbourg Institut de Chimie de Strasbourg FRANCE
| | - Eric Hénon
- Universite de Reims Champagne-Ardenne Institut de Chimie Moléculaire FRANCE
| | - Patrick Pale
- Universite de Strasbourg Institut de Cimie de Strasbourg FRANCE
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19
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Suginta W, Sanram S, Aunkham A, Winterhalter M, Schulte A. The C2 entity of chitosugars is crucial in molecular selectivity of the Vibrio campbellii chitoporin. J Biol Chem 2021; 297:101350. [PMID: 34715124 PMCID: PMC8608610 DOI: 10.1016/j.jbc.2021.101350] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Revised: 10/21/2021] [Accepted: 10/22/2021] [Indexed: 12/14/2022] Open
Abstract
The marine bacterium Vibrio campbellii expresses a chitooligosaccharide-specific outer-membrane channel (chitoporin) for the efficient uptake of nutritional chitosugars that are externally produced through enzymic degradation of environmental host shell chitin. However, the principles behind the distinct substrate selectivity of chitoporins are unclear. Here, we employed black lipid membrane (BLM) electrophysiology, which handles the measurement of the flow of ionic current through porins in phospholipid bilayers for the assessment of porin conductivities, to investigate the pH dependency of chitosugar-chitoporin interactions for the bacterium's natural substrate chitohexaose and its deacetylated form, chitosan hexaose. We show that efficient passage of the N-acetylated chitohexaose through the chitoporin is facilitated by its strong affinity for the pore. In contrast, the deacetylated chitosan hexaose is impermeant; however, protonation of the C2 amino entities of chitosan hexaose allows it to be pulled through the channel in the presence of a transmembrane electric field. We concluded from this the crucial role of C2-substitution as the determining factor for chitoporin entry. A change from N-acetylamino- to amino-substitution effectively abolished the ability of approaching molecules to enter the chitoporin, with deacetylation leading to loss of the distinctive structural features of nanopore opening and pore access of chitosugars. These findings provide further understanding of the multistep pathway of chitin utilization by marine Vibrio bacteria and may guide the development of solid-state or genetically engineered biological nanopores for relevant technological applications.
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Affiliation(s)
- Wipa Suginta
- School of Biomolecular Science and Engineering (BSE), Vidyasirimedhi Institute of Science and Technology (VISTEC), Rayong, Thailand.
| | - Surapoj Sanram
- School of Biomolecular Science and Engineering (BSE), Vidyasirimedhi Institute of Science and Technology (VISTEC), Rayong, Thailand
| | - Anuwat Aunkham
- School of Biomolecular Science and Engineering (BSE), Vidyasirimedhi Institute of Science and Technology (VISTEC), Rayong, Thailand
| | - Mathias Winterhalter
- Department of Life Sciences and Chemistry, Jacobs University Bremen, Bremen, Germany
| | - Albert Schulte
- School of Biomolecular Science and Engineering (BSE), Vidyasirimedhi Institute of Science and Technology (VISTEC), Rayong, Thailand.
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20
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Ruyonga MR, Samoshin VV. Conformational energy (A-value) of the 4-phenyl-1,2,3-triazolyl group. MENDELEEV COMMUNICATIONS 2021. [DOI: 10.1016/j.mencom.2021.09.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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21
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Zheng C, Yu Y, Kuang S, Zhu B, Zhou H, Zhang SQ, Yang J, Shi L, Ran C. β-Amyloid Peptides Manipulate Switching Behaviors of Donor-Acceptor Stenhouse Adducts. Anal Chem 2021; 93:9887-9896. [PMID: 34235921 DOI: 10.1021/acs.analchem.1c01957] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Molecular switching plays a critical role in biological and displaying systems. Donor-acceptor Stenhouse adducts (DASAs) is a newly re-discovered series of switchable photochromes, and light is the most used approach to control its switching behavior. In this report, we speculated that hydrophobic binding pockets of biologically relevant peptides/proteins could be harnessed to alter its switching behavior without the assistance of light. We designed and synthesized a DASA compound SHA-2, and we demonstrated that the Aβ40 species could stabilize SHA-2 in the linear conformation and decrease the rate of molecular switching via fluorescence spectral studies. Moreover, molecular dynamics simulation revealed that SHA-2 could bind to the hydrophobic fragment of the peptide and resulted in substantial changes in the tertiary structure of Aβ40 monomer. This structural change is likely to impede the aggregation of Aβ40, as evidenced by the results from thioflavin T fluorescence and ProteoStat aggregation detection experiments. We believe that our study opens a new window to alter the switching behavior of DASA via DASA-peptide/protein interactions.
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Affiliation(s)
- Chao Zheng
- Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital/Harvard Medical School, Room 2301, Building 149, Charlestown, Boston, Massachusetts 02129, United States.,PET Center, Department of Radiology and Biomedical Imaging, Yale University School of Medicine, New Haven, Connecticut 06520, United States
| | - Yue Yu
- Department of Chemistry and Chemical Biology, University of California, Merced, Merced, California 95343, United States
| | - Shi Kuang
- Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital/Harvard Medical School, Room 2301, Building 149, Charlestown, Boston, Massachusetts 02129, United States
| | - Biyue Zhu
- Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital/Harvard Medical School, Room 2301, Building 149, Charlestown, Boston, Massachusetts 02129, United States
| | - Heng Zhou
- Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital/Harvard Medical School, Room 2301, Building 149, Charlestown, Boston, Massachusetts 02129, United States
| | - Shao-Qing Zhang
- Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital/Harvard Medical School, Room 2301, Building 149, Charlestown, Boston, Massachusetts 02129, United States
| | - Jing Yang
- Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital/Harvard Medical School, Room 2301, Building 149, Charlestown, Boston, Massachusetts 02129, United States
| | - Liang Shi
- Department of Chemistry and Chemical Biology, University of California, Merced, Merced, California 95343, United States
| | - Chongzhao Ran
- Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital/Harvard Medical School, Room 2301, Building 149, Charlestown, Boston, Massachusetts 02129, United States
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22
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Lin C, Qiang X, Dong HL, Huo J, Tan ZJ. Multivalent Ion-Mediated Attraction between Like-Charged Colloidal Particles: Nonmonotonic Dependence on the Particle Charge. ACS OMEGA 2021; 6:9876-9886. [PMID: 33869968 PMCID: PMC8047654 DOI: 10.1021/acsomega.1c00613] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Accepted: 03/26/2021] [Indexed: 06/12/2023]
Abstract
Ion-mediated effective interactions are important for the structure and stability of charged particles such as colloids and nucleic acids. It has been known that the intrinsic electrostatic repulsion between like-charged particles can be modulated into effective attraction by multivalent ions. In this work, we examined the dependence of multivalent ion-mediated attraction between like-charged colloidal particles on the particle charge in a wide range by extensive Monte Carlo simulations. Our calculations show that for both divalent and trivalent salts, the effective attraction between like-charged colloidal particles becomes stronger with the increase of the particle charge, whereas it gradually becomes weakened when the particle charge exceeds a "critical" value. Correspondingly, as the particle charge is increased, the driving force for such effective attraction transits from an attractive electrostatic force to an attractive depletion force, and the attraction weakening by high particle charges is attributed to the transition of electrostatic force from attraction to repulsion. Our analyses suggest that the attractive depletion force and the repulsive electrostatic force at high particle charges result from the Coulomb depletion which suppresses the counterion condensation in the limited region between two like-charged colloidal particles. Moreover, our extensive calculations indicate that the "critical" particle charge decreases apparently for larger ions and smaller colloidal particles due to stronger Coulomb depletion and decreases slightly at higher salt concentrations due to the slightly enhanced Coulomb depletion in the intervening space between colloidal particles. Encouragingly, we derived an analytical formula for the "critical" particle charge based on the Lindemann melting law.
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Affiliation(s)
- Cheng Lin
- Center
for Theoretical Physics and Key Laboratory of Artificial Micro &
Nano-structures of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan 430072, China
| | - Xiaowei Qiang
- Center
for Theoretical Physics and Key Laboratory of Artificial Micro &
Nano-structures of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan 430072, China
| | - Hai-Long Dong
- Center
for Theoretical Physics and Key Laboratory of Artificial Micro &
Nano-structures of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan 430072, China
| | - Jie Huo
- Center
for Theoretical Physics and Key Laboratory of Artificial Micro &
Nano-structures of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan 430072, China
- School
of Physics and Electronic-Electrical Engineering, Ningxia University, Yinchuan 750021, China
| | - Zhi-Jie Tan
- Center
for Theoretical Physics and Key Laboratory of Artificial Micro &
Nano-structures of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan 430072, China
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23
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Abstract
BACKGROUND Hypoglycemia, the condition of low blood sugar, is a common occurance in people with diabetes using insulin therapy. Protecting against hypoglycaemia by engineering an insulin preparation that can auto-adjust its biological activity to fluctuating blood glucose levels has been pursued since the 1970s, but despite numerous publications, no system that works well enough for practical use has reached clinical practise. SCOPE OF REVIEW This review will summarise and scrutinise known approaches for producing glucose-sensitive insulin therapies. Notably, systems described in patent applications will be extensively covered, which has not been the case for earlier reviews of this area. MAJOR CONCLUSIONS The vast majority of published systems are not suitable for product development, but a few glucose-sensitive insulin concepts have recently reached clinical trials, and there is hope that glucose-sensitive insulin will become available to people with diabetes in the near future.
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Affiliation(s)
- Thomas Hoeg-Jensen
- Research Chemistry, Novo Nordisk A/S, Novo Nordisk Park H5.S.05, DK-2720 Maaloev, Denmark.
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24
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Hao T, Yang Y, Liang W, Fan C, Wang X, Wu W, Chen X, Fu H, Chen H, Yang C. Trace mild acid-catalysed Z → E isomerization of norbornene-fused stilbene derivatives: intelligent chiral molecular photoswitches with controllable self-recovery. Chem Sci 2020; 12:2614-2622. [PMID: 34164029 PMCID: PMC8179340 DOI: 10.1039/d0sc05213b] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Stilbene derivatives have long been known to undergo “acid-catalyzed” Z → E isomerization, where a strong mineral acid at high concentration is practically necessary. Such severe reaction conditions often cause undesired by-reactions and limit their potential application. Herein, we present a trace mild acid-catalyzed Z → E isomerization found with stilbene derivatives fused with a norbornene moiety. By-reactions, such as the migration of the C
Created by potrace 1.16, written by Peter Selinger 2001-2019
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C double bond and electrophilic addition reactions, were completely inhibited because of the ring strain caused by the fused norbornene component. Direct photolysis of the E isomers at selected wavelengths led to the E → Z photoisomerization of these stilbene derivatives and thus constituted a unique class of molecular switches orthogonally controllable by light and acid. The catalytic amount of acid could be readily removed, and the Z → E isomerization could be controlled by turning on/off the irradiation of a photoacid, which allowed repeated isomerization in a non-invasive manner. Moreover, the Z isomer produced by photoisomerization could spontaneously self-recover to the E isomer in the presence of a catalytic amount of acid. The kinetics of Z → E isomerization were adjustable by manipulating catalytic factors and, therefore, unprecedented molecular photoswitches with adjustable self-recovery were realized. Quantitative Z → E isomerization was catalyzed by trace mild acids to offer molecular switches orthogonally controllable by acid and light.![]()
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Affiliation(s)
- Taotao Hao
- Key Laboratory of Green Chemistry & Technology, College of Chemistry, Sichuan University 29 Wangjiang Road Chengdu 610064 China
| | - Yongsheng Yang
- Key Laboratory of Green Chemistry & Technology, College of Chemistry, Sichuan University 29 Wangjiang Road Chengdu 610064 China
| | - Wenting Liang
- Institute of Environmental Science, Department of Chemistry, Shanxi University Taiyuan 030006 China
| | - Chunying Fan
- Key Laboratory of Green Chemistry & Technology, College of Chemistry, Sichuan University 29 Wangjiang Road Chengdu 610064 China
| | - Xin Wang
- Key Laboratory of Green Chemistry & Technology, College of Chemistry, Sichuan University 29 Wangjiang Road Chengdu 610064 China
| | - Wanhua Wu
- Key Laboratory of Green Chemistry & Technology, College of Chemistry, Sichuan University 29 Wangjiang Road Chengdu 610064 China
| | - Xiaochuan Chen
- Key Laboratory of Green Chemistry & Technology, College of Chemistry, Sichuan University 29 Wangjiang Road Chengdu 610064 China
| | - Haiyan Fu
- Key Laboratory of Green Chemistry & Technology, College of Chemistry, Sichuan University 29 Wangjiang Road Chengdu 610064 China
| | - Hua Chen
- Key Laboratory of Green Chemistry & Technology, College of Chemistry, Sichuan University 29 Wangjiang Road Chengdu 610064 China
| | - Cheng Yang
- Key Laboratory of Green Chemistry & Technology, College of Chemistry, Sichuan University 29 Wangjiang Road Chengdu 610064 China
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25
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Zheng Y, Lin C, Zhang JS, Tan ZJ. Ion-mediated interactions between like-charged polyelectrolytes with bending flexibility. Sci Rep 2020; 10:21586. [PMID: 33299024 PMCID: PMC7726156 DOI: 10.1038/s41598-020-78684-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Accepted: 11/27/2020] [Indexed: 12/12/2022] Open
Abstract
Ion-mediated interactions between polyelectrolytes (PEs) are crucial to the properties of flexible biopolymers such as nucleic acids and proteins but the effect of PE flexibility on such interactions has not been explicitly addressed until now. In this work, the potentials of mean force (PMFs) between like-charged PEs with different bending flexibility have been investigated by Monte Carlo simulations and a cylindrical confinement around each PE was involved to model two PEs in an array. We found that in the absence of trivalent salt, the PMFs between like-charged PEs in an array are apparently repulsive while the bending flexibility can visibly decrease the repulsive PMFs. With the addition of high trivalent salt, the PMFs become significantly attractive whereas the attractive PMFs can be apparently weakened by the bending flexibility. Our analyses reveal that the effect of bending flexibility is attributed to the increased PE conformational space, which allows the PEs to fluctuate away to decrease the monovalent ion-mediated repulsion or to weaken the trivalent ion-mediated attraction through disrupting trivalent ion-bridging configuration. Additionally, our further calculations show that the effect of bending flexibility on the ion-mediated interactions is less apparent for PEs without cylindrical confinement.
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Affiliation(s)
- Yitong Zheng
- Hongyi Honor School, Wuhan University, Wuhan, 430072, China
- Department of Physics and Key Laboratory of Artificial Micro and Nano-Structures of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan, 430072, China
| | - Cheng Lin
- Department of Physics and Key Laboratory of Artificial Micro and Nano-Structures of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan, 430072, China
| | - Jin-Si Zhang
- College of Electrical and Photoelectronic Engineering, West Anhui University, Lu'an, 237012, China
| | - Zhi-Jie Tan
- Department of Physics and Key Laboratory of Artificial Micro and Nano-Structures of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan, 430072, China.
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26
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Multiple Stimuli-Responsive Conformational Exchanges of Biphen[3]arene Macrocycle. Molecules 2020; 25:molecules25245780. [PMID: 33302382 PMCID: PMC7762528 DOI: 10.3390/molecules25245780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Revised: 11/09/2020] [Accepted: 11/11/2020] [Indexed: 11/17/2022] Open
Abstract
Conformational exchanges of synthetic macrocyclic acceptors are rather fast, which is rarely studied in the absence of guests. Here, we report multiple stimuli-responsive conformational exchanges between two preexisting conformations of 2,2',4,4'-tetramethoxyl biphen[3]arene (MeBP3) macrocycle. Structures of these two conformations are both observed in solid state, and characterized by 1H NMR, 13C NMR and 2D NMR in solution. In particular, conformational exchanges can respond to solvents, temperatures, guest binding and acid/base addition. The current system may have a role to play in the construction of molecular switches and other stimuli-responsive systems.
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27
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Zhang J, Liu Z, Yin Z, Yang X, Ma Y, Szostak R, Szostak M. Preference of cis-Thioamide Structure in N-Thioacyl-N-methylanilines. Org Lett 2020; 22:9500-9505. [DOI: 10.1021/acs.orglett.0c03512] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Jin Zhang
- College of Chemistry and Chemical Engineering, Key Laboratory of Chemical Additives for China National Light Industry, Shaanxi University of Science and Technology, Xi’an 710021, China
| | - Zhulin Liu
- College of Chemistry and Chemical Engineering, Key Laboratory of Chemical Additives for China National Light Industry, Shaanxi University of Science and Technology, Xi’an 710021, China
| | - Zheng Yin
- College of Chemistry and Chemical Engineering, Key Laboratory of Chemical Additives for China National Light Industry, Shaanxi University of Science and Technology, Xi’an 710021, China
| | - Xiufang Yang
- College of Chemistry and Chemical Engineering, Key Laboratory of Chemical Additives for China National Light Industry, Shaanxi University of Science and Technology, Xi’an 710021, China
| | - Yangmin Ma
- College of Chemistry and Chemical Engineering, Key Laboratory of Chemical Additives for China National Light Industry, Shaanxi University of Science and Technology, Xi’an 710021, China
| | - Roman Szostak
- Department of Chemistry, Wroclaw University, F. Joliot-Curie 14, Wroclaw 50-383, Poland
| | - Michal Szostak
- Department of Chemistry, Rutgers University, 73 Warren Street, Newark, New Jersey 07102, United States
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28
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Kolodzeiski E, Amirjalayer S. Elucidating the Impact of Molecular Motors on Their Solvation Environment. J Phys Chem B 2020; 124:10879-10888. [DOI: 10.1021/acs.jpcb.0c06343] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Elena Kolodzeiski
- Physikalisches Institut, Westfälische Wilhelms-Universität Münster, Wilhelm-Klemm-Straße 10, Münster 48149, Germany
- Center for Nanotechnology, Heisenbergstraße 11, Münster 48149, Germany
- Center for Multiscale Theory and Computation, Westfälische Wilhelms-Universität Münster, Wilhelm-Klemm-Straße 10, Münster 48149, Germany
| | - Saeed Amirjalayer
- Physikalisches Institut, Westfälische Wilhelms-Universität Münster, Wilhelm-Klemm-Straße 10, Münster 48149, Germany
- Center for Nanotechnology, Heisenbergstraße 11, Münster 48149, Germany
- Center for Multiscale Theory and Computation, Westfälische Wilhelms-Universität Münster, Wilhelm-Klemm-Straße 10, Münster 48149, Germany
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29
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Jeong M, Park J, Kwon S. Molecular Switches and Motors Powered by Orthogonal Stimuli. European J Org Chem 2020. [DOI: 10.1002/ejoc.202001179] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Myeongsu Jeong
- Department of Chemistry Chung‐Ang University Heukseok‐ro, Dongjak‐gu 06974 Seoul Republic of Korea
| | - Jiyoon Park
- Department of Chemistry Chung‐Ang University Heukseok‐ro, Dongjak‐gu 06974 Seoul Republic of Korea
| | - Sunbum Kwon
- Department of Chemistry Chung‐Ang University Heukseok‐ro, Dongjak‐gu 06974 Seoul Republic of Korea
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30
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Beer H, Bresien J, Michalik D, Schulz A, Villinger A. Reversible switching between housane and cyclopentanediyl isomers: an isonitrile-catalysed thermal reverse reaction. Dalton Trans 2020; 49:13986-13992. [PMID: 32869789 DOI: 10.1039/d0dt02688c] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The photo-isomerization of an isolable five-membered singlet biradical based on C, N, and P ([TerNP]2CNDmp, 2a) selectively afforded a closed-shell housane-type isomer (3a) by forming a transannular P-P bond. In the dark, the housane-type species re-isomerized to the biradical, resulting in a fully reversible overall process. In the present study, the influence of tBuNC on the thermal reverse reaction was investigated: the isonitrile acted as a catalyst, thus allowing control over the thermal reaction rate. Moreover, tBuNC also reacted with the biradical to form an adduct species ([TerNP]2CNDmp·CNtBu, 4a), which can be regarded as the resting state of the system. The reactive species 2a and 3a could be re-generated in situ by irradiation with red light. The results of this study extend our understanding of this new class of molecular switches.
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Affiliation(s)
- Henrik Beer
- Institute of Chemistry, University of Rostock, Albert-Einstein-Straße 3a, 18059 Rostock, Germany.
| | - Jonas Bresien
- Institute of Chemistry, University of Rostock, Albert-Einstein-Straße 3a, 18059 Rostock, Germany.
| | - Dirk Michalik
- Institute of Chemistry, University of Rostock, Albert-Einstein-Straße 3a, 18059 Rostock, Germany. and Leibniz Institute for Catalysis, Albert-Einstein-Straße 29a, 18059 Rostock, Germany
| | - Axel Schulz
- Institute of Chemistry, University of Rostock, Albert-Einstein-Straße 3a, 18059 Rostock, Germany. and Leibniz Institute for Catalysis, Albert-Einstein-Straße 29a, 18059 Rostock, Germany and Department Life, Light & Matter, University of Rostock, 18051 Rostock, Germany
| | - Alexander Villinger
- Institute of Chemistry, University of Rostock, Albert-Einstein-Straße 3a, 18059 Rostock, Germany.
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31
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Rest C, Philips DS, Dünnebacke T, Sutar P, Sampedro A, Droste J, Stepanenko V, Hansen MR, Albuquerque RQ, Fernández G. Tuning Aqueous Supramolecular Polymerization by an Acid-Responsive Conformational Switch. Chemistry 2020; 26:10005-10013. [PMID: 32374463 PMCID: PMC7496824 DOI: 10.1002/chem.202001566] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 05/03/2020] [Indexed: 01/03/2023]
Abstract
Besides their widespread use in coordination chemistry, 2,2'-bipyridines are known for their ability to undergo cis-trans conformational changes in response to metal ions and acids, which has been primarily investigated at the molecular level. However, the exploitation of such conformational switching in self-assembly has remained unexplored. In this work, the use of 2,2'-bipyridines as acid-responsive conformational switches to tune supramolecular polymerization processes has been demonstrated. To achieve this goal, we have designed a bipyridine-based linear bolaamphiphile, 1, that forms ordered supramolecular polymers in aqueous media through cooperative aromatic and hydrophobic interactions. Interestingly, addition of acid (TFA) induces the monoprotonation of the 2,2'-bipyridine moiety, leading to a switch in the molecular conformation from a linear (trans) to a V-shaped (cis) state. This increase in molecular distortion along with electrostatic repulsions of the positively charged bipyridine-H+ units attenuate the aggregation tendency and induce a transformation from long fibers to shorter thinner fibers. Our findings may contribute to opening up new directions in molecular switches and stimuli-responsive supramolecular materials.
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Affiliation(s)
- Christina Rest
- Institut für Organische ChemieUniversität Würzburg am Hubland97078WürzburgGermany
| | - Divya Susan Philips
- Organisch-Chemisches InstitutWestfälische Wilhelms-Universität (WWU) MünsterCorrensstraße, 40.48149MünsterGermany
| | - Torsten Dünnebacke
- Organisch-Chemisches InstitutWestfälische Wilhelms-Universität (WWU) MünsterCorrensstraße, 40.48149MünsterGermany
| | - Papri Sutar
- Organisch-Chemisches InstitutWestfälische Wilhelms-Universität (WWU) MünsterCorrensstraße, 40.48149MünsterGermany
| | - Angel Sampedro
- Organisch-Chemisches InstitutWestfälische Wilhelms-Universität (WWU) MünsterCorrensstraße, 40.48149MünsterGermany
| | - Jörn Droste
- Institut für Physikalische ChemieWWU MünsterCorrensstraße, 28/3048149MünsterGermany
| | - Vladimir Stepanenko
- Institut für Organische ChemieUniversität Würzburg am Hubland97078WürzburgGermany
| | - Michael Ryan Hansen
- Institut für Physikalische ChemieWWU MünsterCorrensstraße, 28/3048149MünsterGermany
| | - Rodrigo Q. Albuquerque
- Organisch-Chemisches InstitutWestfälische Wilhelms-Universität (WWU) MünsterCorrensstraße, 40.48149MünsterGermany
| | - Gustavo Fernández
- Organisch-Chemisches InstitutWestfälische Wilhelms-Universität (WWU) MünsterCorrensstraße, 40.48149MünsterGermany
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32
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Wang X, Jia F, Yang LP, Zhou H, Jiang W. Conformationally adaptive macrocycles with flipping aromatic sidewalls. Chem Soc Rev 2020; 49:4176-4188. [PMID: 32458888 DOI: 10.1039/d0cs00341g] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Conformationally adaptive macrocycles possess multiple well-defined conformations through quickly flipping their aromatic sidewalls. The macrocycles combine the binding power of all the conformations. Upon binding a guest, one or a combination of conformations are selected to achieve the maximized binding affinity. In addition, the complex conformational network is responsive to changes in temperature or solvent. It has been demonstrated that these macrocycles have unique properties in chirality sensing, stimuli-responsive self-assembly, and molecular switches. In this tutorial review, we summarize recent advances on conformationally adaptive macrocycles with an emphasis on our own research. We believe that this class of macrocycles will have a bright future in supramolecular chemistry and beyond.
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Affiliation(s)
- Xiaoping Wang
- Shenzhen Grubbs Institute, Guangdong Provincial Key Laboratory of Catalysis, and Department of Chemistry, Southern University of Science and Technology, Shenzhen, 518055, China.
| | - Fei Jia
- Shenzhen Grubbs Institute, Guangdong Provincial Key Laboratory of Catalysis, and Department of Chemistry, Southern University of Science and Technology, Shenzhen, 518055, China. and Institut für Chemie und Biochemie, Freie Universität Berlin, Arnimallee 20, 14195 Berlin, Germany
| | - Liu-Pan Yang
- Shenzhen Grubbs Institute, Guangdong Provincial Key Laboratory of Catalysis, and Department of Chemistry, Southern University of Science and Technology, Shenzhen, 518055, China.
| | - Hang Zhou
- Shenzhen Grubbs Institute, Guangdong Provincial Key Laboratory of Catalysis, and Department of Chemistry, Southern University of Science and Technology, Shenzhen, 518055, China.
| | - Wei Jiang
- Shenzhen Grubbs Institute, Guangdong Provincial Key Laboratory of Catalysis, and Department of Chemistry, Southern University of Science and Technology, Shenzhen, 518055, China.
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33
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Ruyonga MR, Mendoza O, Browne M, Samoshin VV. Exploration of
trans
‐2‐(azaarylsulfanyl)‐cyclohexanols as potential pH‐triggered conformational switches. J PHYS ORG CHEM 2020. [DOI: 10.1002/poc.4068] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Mulinde R. Ruyonga
- Department of Chemistry, College of the Pacific University of the Pacific Stockton CA USA
| | - Oscar Mendoza
- Department of Chemistry, College of the Pacific University of the Pacific Stockton CA USA
| | - Michael Browne
- Department of Chemistry, College of the Pacific University of the Pacific Stockton CA USA
| | - Vyacheslav V. Samoshin
- Department of Chemistry, College of the Pacific University of the Pacific Stockton CA USA
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34
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Kempfer-Robertson EM, Thompson LM. Effect of Oriented External Electric Fields on the Photo and Thermal Isomerization of Azobenzene. J Phys Chem A 2020; 124:3520-3529. [PMID: 32286821 DOI: 10.1021/acs.jpca.0c00492] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Azobenzene is a prototype molecule with potential applications in molecular switches, solar thermal batteries, sensors, photoresponsive membranes, molecular electronics, data storage, and nonlinear optics. Photo and thermal isomerization pathways exhibit different charge-transfer character and dipole moments, implying that the use of electric fields can be used to modulate the reactivity of azobenzene. This article examines the differential effect of orientated electric fields on the rotation and inversion thermal and photoisomerization pathways of azobenzene to explore the feasibility of using electric fields in the design of azobenzene-based molecular devices. Our findings demonstrate that the application of orientated electric fields modifies the accessibility of the S0/S1 seam of electronic degeneracy, as well as changes the energetically favored relaxation pathway in the branching space to yield different photoproducts. In addition, we observed strong-field dipole-inversion effects that cause a topographical change in the response of the potential energy surface to the applied field and can result in geometric minima that do not exist under field-free conditions. On the S0 surface, transition barriers can be modified on the order of ±10 kcal mol-1, enabling control of thermal isomerization rates.
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Affiliation(s)
| | - Lee M Thompson
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40205, United States
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35
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Biagini C, Di Stefano S. Abiotic Chemical Fuels for the Operation of Molecular Machines. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201912659] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Chiara Biagini
- Dipartimento di Chimica Istituto CNR per i Sistemi Biologici (ISB-CNR) Sezione Meccanismi di Reazione Università di Roma “La Sapienza” P. le A. Moro 5 00185 Roma Italy
| | - Stefano Di Stefano
- Dipartimento di Chimica Istituto CNR per i Sistemi Biologici (ISB-CNR) Sezione Meccanismi di Reazione Università di Roma “La Sapienza” P. le A. Moro 5 00185 Roma Italy
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36
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Biagini C, Di Stefano S. Abiotic Chemical Fuels for the Operation of Molecular Machines. Angew Chem Int Ed Engl 2020; 59:8344-8354. [DOI: 10.1002/anie.201912659] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2019] [Revised: 11/28/2019] [Indexed: 01/21/2023]
Affiliation(s)
- Chiara Biagini
- Dipartimento di Chimica Istituto CNR per i Sistemi Biologici (ISB-CNR) Sezione Meccanismi di Reazione Università di Roma “La Sapienza” P. le A. Moro 5 00185 Roma Italy
| | - Stefano Di Stefano
- Dipartimento di Chimica Istituto CNR per i Sistemi Biologici (ISB-CNR) Sezione Meccanismi di Reazione Università di Roma “La Sapienza” P. le A. Moro 5 00185 Roma Italy
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37
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Li C, Zhang K, Ishida M, Li Q, Shimomura K, Baryshnikov G, Li X, Savage M, Wu XY, Yang S, Furuta H, Xie Y. Tripyrrin-armed isosmaragdyrins: synthesis, heterodinuclear coordination, and protonation-triggered helical inversion. Chem Sci 2020; 11:2790-2795. [PMID: 34084339 PMCID: PMC8157612 DOI: 10.1039/c9sc06197e] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Oxidative ring closure of linear oligopyrroles is one of the synthetic approaches to novel porphyrinoids with dinuclear coordination sites and helical chirality. The spatial arrangement of the pyrrolic groups of octapyrrole (P8) affected the position of the intramolecular oxidative coupling of the pyrrolic units; tripyrrin-armed isosmaragdyrin analogue (1) containing a β,β-linked bipyrrole moiety was synthesized regioselectively in a high yield by using FeCl3. NiII-coordination at the armed tripyrrin site of 1 allowed the formation of diastereomeric helical twisted complexes (2A and 2B) and succeeding CuII-coordination at the macrocyclic core afforded heterodinuclear NiII/CuII-complexes (3A and 3B). Each of them comprised a pair of separable enantiomers, exhibiting P- and M-helices, respectively. Notably, diastereomeric interconversion from 2A to 2B was quantitatively achieved as a consequence of helical transformation under acidic conditions.
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Affiliation(s)
- Chengjie Li
- Key Laboratory for Advanced Materials, Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering, East China University of Science & Technology Shanghai 200237 China
| | - Kai Zhang
- Key Laboratory for Advanced Materials, Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering, East China University of Science & Technology Shanghai 200237 China
| | - Masatoshi Ishida
- Department of Chemistry and Biochemistry, Graduate School of Engineering, Center for Molecular Systems, Kyushu University Fukuoka 819-0395 Japan
| | - Qizhao Li
- Key Laboratory for Advanced Materials, Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering, East China University of Science & Technology Shanghai 200237 China
| | - Keito Shimomura
- Department of Chemistry and Biochemistry, Graduate School of Engineering, Center for Molecular Systems, Kyushu University Fukuoka 819-0395 Japan
| | - Glib Baryshnikov
- School of Biotechnology, KTH Royal Institute of Technology SE-10691 Stockholm Sweden
| | - Xin Li
- School of Biotechnology, KTH Royal Institute of Technology SE-10691 Stockholm Sweden
| | - Mathew Savage
- School of Chemistry, University of Manchester Manchester M13 9PL UK
| | - Xin-Yan Wu
- Key Laboratory for Advanced Materials, Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering, East China University of Science & Technology Shanghai 200237 China
| | - Sihai Yang
- School of Chemistry, University of Manchester Manchester M13 9PL UK
| | - Hiroyuki Furuta
- Department of Chemistry and Biochemistry, Graduate School of Engineering, Center for Molecular Systems, Kyushu University Fukuoka 819-0395 Japan
| | - Yongshu Xie
- Key Laboratory for Advanced Materials, Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering, East China University of Science & Technology Shanghai 200237 China
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38
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Yin J, Khalilov AN, Muthupandi P, Ladd R, Birman VB. Phenazine-1,6-dicarboxamides: Redox-Responsive Molecular Switches. J Am Chem Soc 2019; 142:60-63. [PMID: 31873004 DOI: 10.1021/jacs.9b11160] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
We introduce phenazine-1,6-dicarboxamides as redox-responsive molecular switches. The reduction of their phenazine core transforms them from hydrogen-bond acceptors into hydrogen-bond donors and thus forces the secondary amide substituents to turn around. The resulting conformational changes are envisioned to form the basis for butterfly coil foldamers undergoing reversible extension and contraction in response to changing their oxidation state.
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Affiliation(s)
- Jingwei Yin
- Department of Chemistry , Washington University , Campus Box 1134, One Brookings Drive , Saint Louis , Missouri 63130 , United States
| | - Ali N Khalilov
- Department of Chemistry , Washington University , Campus Box 1134, One Brookings Drive , Saint Louis , Missouri 63130 , United States
| | - Pandi Muthupandi
- Department of Chemistry , Washington University , Campus Box 1134, One Brookings Drive , Saint Louis , Missouri 63130 , United States
| | - Ruby Ladd
- Department of Chemistry , Washington University , Campus Box 1134, One Brookings Drive , Saint Louis , Missouri 63130 , United States
| | - Vladimir B Birman
- Department of Chemistry , Washington University , Campus Box 1134, One Brookings Drive , Saint Louis , Missouri 63130 , United States
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39
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Lin C, Zhang X, Qiang X, Zhang JS, Tan ZJ. Apparent repulsion between equally and oppositely charged spherical polyelectrolytes in symmetrical salt solutions. J Chem Phys 2019; 151:114902. [PMID: 31542010 DOI: 10.1063/1.5120756] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Ion-mediated interactions are very important for the properties of colloids and biomacromolecules such as nucleic acids and proteins. In this work, the ion-mediated interactions between equally and oppositely charged spherical polyelectrolytes (SPEs) in symmetrical divalent electrolytes have been investigated by Monte Carlo simulations, and an unexpected apparent repulsion was observed at high divalent salt concentration. Our investigations also show that the effective repulsion becomes more pronounced for SPEs with higher charge densities and for counterions with larger sizes and was found to be tightly accompanied with the over-neutralization to SPEs by condensed counterions and their release upon the approach of SPEs. Such attractive interaction can be reproduced by our proposed modified Poisson-Boltzmann model and is mainly attributed to the increase in the electrostatic repulsion between on charged SPE and the over-neutralized counterions around the other oppositely SPE with the approach of the two SPEs.
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Affiliation(s)
- Cheng Lin
- Center for Theoretical Physics and Key Laboratory of Artificial Micro and Nano-structures of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan 430072, China
| | - Xi Zhang
- Center for Theoretical Physics and Key Laboratory of Artificial Micro and Nano-structures of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan 430072, China
| | - Xiaowei Qiang
- Center for Theoretical Physics and Key Laboratory of Artificial Micro and Nano-structures of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan 430072, China
| | - Jin-Si Zhang
- College of Electrical and Photoelectronic Engineering, West Anhui University, Lu'an 237012, China
| | - Zhi-Jie Tan
- Center for Theoretical Physics and Key Laboratory of Artificial Micro and Nano-structures of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan 430072, China
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40
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Ruyonga MR, Mendoza O, Samoshin VV. trans-2-(Azaarylsulfanyl)cyclohexanol derivatives as potential pH-triggered conformational switches. MENDELEEV COMMUNICATIONS 2019. [DOI: 10.1016/j.mencom.2019.09.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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41
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Bresien J, Kröger-Badge T, Lochbrunner S, Michalik D, Müller H, Schulz A, Zander E. A chemical reaction controlled by light-activated molecular switches based on hetero-cyclopentanediyls. Chem Sci 2019; 10:3486-3493. [PMID: 30996939 PMCID: PMC6430090 DOI: 10.1039/c8sc04893b] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2018] [Accepted: 02/17/2019] [Indexed: 01/22/2023] Open
Abstract
Molecular switches are molecules that can reversibly be shifted between at least two stable states with different physical and chemical properties, making them interesting for application as chemical sensors or molecular machines. We recently discovered that five-membered, cyclic biradicals based on group 15 elements are efficient and robust photochemical switches that can be activated by red light. The quantum yield of the photo-isomerization is as high as 24.6%, and the thermal equilibration of the photo-activation product proceeds rapidly at ambient temperature. The fully reversible process was studied by experimental and high-level ab initio techniques. We could further demonstrate that the biradical character could be completely turned on and off, so the system could be applied to control chemical equilibria that involve activation products of the cyclic biradicals.
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Affiliation(s)
- Jonas Bresien
- Institute of Chemistry , University of Rostock , Albert-Einstein-Str. 3a , D-18059 Rostock , Germany . ;
| | - Thomas Kröger-Badge
- Institute of Chemistry , University of Rostock , Albert-Einstein-Str. 3a , D-18059 Rostock , Germany . ;
| | - Stefan Lochbrunner
- Institute of Physics , University of Rostock , Albert-Einstein-Str. 23-24 , D-18059 Rostock , Germany.,Department of Life, Light & Matter , University of Rostock , D-18051 Rostock , Germany
| | - Dirk Michalik
- Institute of Chemistry , University of Rostock , Albert-Einstein-Str. 3a , D-18059 Rostock , Germany . ; .,Leibniz Institute for Catalysis at the University of Rostock e.V. , Albert-Einstein-Straße 29a , D-18059 Rostock , Germany
| | - Henrik Müller
- Institute of Chemistry , University of Rostock , Albert-Einstein-Str. 3a , D-18059 Rostock , Germany . ;
| | - Axel Schulz
- Institute of Chemistry , University of Rostock , Albert-Einstein-Str. 3a , D-18059 Rostock , Germany . ; .,Department of Life, Light & Matter , University of Rostock , D-18051 Rostock , Germany.,Leibniz Institute for Catalysis at the University of Rostock e.V. , Albert-Einstein-Straße 29a , D-18059 Rostock , Germany
| | - Edgar Zander
- Institute of Chemistry , University of Rostock , Albert-Einstein-Str. 3a , D-18059 Rostock , Germany . ;
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42
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Yang MG, Xiao Z, Cherney RJ, Tebben AJ, Batt DG, Brown GD, Chen J, Cvijic ME, Dabros M, Duncia JV, Galella M, Gardner DS, Khandelwal P, Ko SS, Malley MF, Mo R, Pang J, Rose AV, Santella JB, Shi H, Srivastava A, Traeger SC, Wang B, Xu S, Zhao R, Barrish JC, Mandlekar S, Zhao Q, Carter PH. Use of a Conformational-Switching Mechanism to Modulate Exposed Polarity: Discovery of CCR2 Antagonist BMS-741672. ACS Med Chem Lett 2019; 10:300-305. [PMID: 30891130 DOI: 10.1021/acsmedchemlett.8b00439] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2018] [Accepted: 01/16/2019] [Indexed: 12/21/2022] Open
Abstract
We encountered a dilemma in the course of studying a series of antagonists of the G-protein coupled receptor CC chemokine receptor-2 (CCR2): compounds with polar C3 side chains exhibited good ion channel selectivity but poor oral bioavailability, whereas compounds with lipophilic C3 side chains exhibited good oral bioavailability in preclinical species but poor ion channel selectivity. Attempts to solve this through the direct modulation of physicochemical properties failed. However, the installation of a protonation-dependent conformational switching mechanism resolved the problem because it enabled a highly selective and relatively polar molecule to access a small population of a conformer with lower polar surface area and higher membrane permeability. Optimization of the overall properties in this series yielded the CCR2 antagonist BMS-741672 (7), which embodied properties suitable for study in human clinical trials.
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Affiliation(s)
- Michael G. Yang
- Bristol-Myers Squibb Company, Research and Development, Route 206 and Province Line Road, Princeton, New Jersey 08543, United States
| | - Zili Xiao
- Bristol-Myers Squibb Company, Research and Development, Route 206 and Province Line Road, Princeton, New Jersey 08543, United States
| | - Robert J. Cherney
- Bristol-Myers Squibb Company, Research and Development, Route 206 and Province Line Road, Princeton, New Jersey 08543, United States
| | - Andrew J. Tebben
- Bristol-Myers Squibb Company, Research and Development, Route 206 and Province Line Road, Princeton, New Jersey 08543, United States
| | - Douglas G. Batt
- Bristol-Myers Squibb Company, Research and Development, Route 206 and Province Line Road, Princeton, New Jersey 08543, United States
| | - Gregory D. Brown
- Bristol-Myers Squibb Company, Research and Development, Route 206 and Province Line Road, Princeton, New Jersey 08543, United States
| | - Jing Chen
- Bristol-Myers Squibb Company, Research and Development, Route 206 and Province Line Road, Princeton, New Jersey 08543, United States
| | - Mary Ellen Cvijic
- Bristol-Myers Squibb Company, Research and Development, Route 206 and Province Line Road, Princeton, New Jersey 08543, United States
| | - Marta Dabros
- Bristol-Myers Squibb Company, Research and Development, Route 206 and Province Line Road, Princeton, New Jersey 08543, United States
| | - John V. Duncia
- Bristol-Myers Squibb Company, Research and Development, Route 206 and Province Line Road, Princeton, New Jersey 08543, United States
| | - Michael Galella
- Bristol-Myers Squibb Company, Research and Development, Route 206 and Province Line Road, Princeton, New Jersey 08543, United States
| | - Daniel S. Gardner
- Bristol-Myers Squibb Company, Research and Development, Route 206 and Province Line Road, Princeton, New Jersey 08543, United States
| | - Purnima Khandelwal
- Bristol-Myers Squibb Company, Research and Development, Route 206 and Province Line Road, Princeton, New Jersey 08543, United States
| | - Soo S. Ko
- Bristol-Myers Squibb Company, Research and Development, Route 206 and Province Line Road, Princeton, New Jersey 08543, United States
| | - Mary F. Malley
- Bristol-Myers Squibb Company, Research and Development, Route 206 and Province Line Road, Princeton, New Jersey 08543, United States
| | - Ruowei Mo
- Bristol-Myers Squibb Company, Research and Development, Route 206 and Province Line Road, Princeton, New Jersey 08543, United States
| | - Jian Pang
- Bristol-Myers Squibb Company, Research and Development, Route 206 and Province Line Road, Princeton, New Jersey 08543, United States
| | - Anne V. Rose
- Bristol-Myers Squibb Company, Research and Development, Route 206 and Province Line Road, Princeton, New Jersey 08543, United States
| | - Joseph B. Santella
- Bristol-Myers Squibb Company, Research and Development, Route 206 and Province Line Road, Princeton, New Jersey 08543, United States
| | - Hong Shi
- Bristol-Myers Squibb Company, Research and Development, Route 206 and Province Line Road, Princeton, New Jersey 08543, United States
| | - Anurag Srivastava
- Bristol-Myers Squibb Company, Research and Development, Route 206 and Province Line Road, Princeton, New Jersey 08543, United States
| | - Sarah C. Traeger
- Bristol-Myers Squibb Company, Research and Development, Route 206 and Province Line Road, Princeton, New Jersey 08543, United States
| | - Bei Wang
- Bristol-Myers Squibb Company, Research and Development, Route 206 and Province Line Road, Princeton, New Jersey 08543, United States
| | - Songmei Xu
- Bristol-Myers Squibb Company, Research and Development, Route 206 and Province Line Road, Princeton, New Jersey 08543, United States
| | - Rulin Zhao
- Bristol-Myers Squibb Company, Research and Development, Route 206 and Province Line Road, Princeton, New Jersey 08543, United States
| | - Joel C. Barrish
- Bristol-Myers Squibb Company, Research and Development, Route 206 and Province Line Road, Princeton, New Jersey 08543, United States
| | - Sandhya Mandlekar
- Bristol-Myers Squibb Company, Research and Development, Route 206 and Province Line Road, Princeton, New Jersey 08543, United States
| | - Qihong Zhao
- Bristol-Myers Squibb Company, Research and Development, Route 206 and Province Line Road, Princeton, New Jersey 08543, United States
| | - Percy H. Carter
- Bristol-Myers Squibb Company, Research and Development, Route 206 and Province Line Road, Princeton, New Jersey 08543, United States
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Ousaka N, Shimizu K, Suzuki Y, Iwata T, Itakura M, Taura D, Iida H, Furusho Y, Mori T, Yashima E. Spiroborate-Based Double-Stranded Helicates: Meso-to-Racemo Isomerization and Ion-Triggered Springlike Motion of the Racemo-Helicate. J Am Chem Soc 2018; 140:17027-17039. [DOI: 10.1021/jacs.8b08268] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Naoki Ousaka
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464-8603, Japan
- Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464-8603, Japan
| | - Kaori Shimizu
- Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464-8603, Japan
| | - Yoshimasa Suzuki
- Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464-8603, Japan
| | - Takuya Iwata
- Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464-8603, Japan
| | - Manabu Itakura
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464-8603, Japan
| | - Daisuke Taura
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464-8603, Japan
- Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464-8603, Japan
| | - Hiroki Iida
- Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464-8603, Japan
| | - Yoshio Furusho
- Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464-8603, Japan
| | - Tadashi Mori
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Eiji Yashima
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464-8603, Japan
- Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464-8603, Japan
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Abstract
In this paper we elaborate on recently developed molecular switch architectures and how these new systems can help with the realization of new functions and advancement of artificial molecular machines. Progress in chemically and photoinduced switches and motors is summarized and contextualized such that the reader may gain an appreciation for the novel tools that have come about in the past decade. Many of these systems offer distinct advantages over commonly employed switches, including improved fidelity, addressability, and robustness. Thus, this paper serves as a jumping-off point for researchers seeking new switching motifs for specific applications, or ones that address the limitations of presently available systems.
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Affiliation(s)
- Jared D Harris
- Department of Chemistry, Dartmouth College, Hanover, NH 03755
| | - Mark J Moran
- Department of Chemistry, Dartmouth College, Hanover, NH 03755
| | - Ivan Aprahamian
- Department of Chemistry, Dartmouth College, Hanover, NH 03755
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45
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Xu C, Xu L, Ma X. A linear supramolecular polymer based on host-guest recognition and metal-ligand coordination. CHINESE CHEM LETT 2018. [DOI: 10.1016/j.cclet.2017.11.045] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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46
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Kehoe ZR, Woller GR, Speetzen ED, Lawrence JB, Bosch E, Bowling NP. Effects of Halogen and Hydrogen Bonding on the Electronics of a Conjugated Rotor. J Org Chem 2018; 83:6142-6150. [DOI: 10.1021/acs.joc.8b01064] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Zachary R. Kehoe
- Department of Chemistry, University of Wisconsin—Stevens Point, 2001 Fourth Avenue, Stevens Point, Wisconsin 54481, United States
| | - Garrett R. Woller
- Department of Chemistry, University of Wisconsin—Stevens Point, 2001 Fourth Avenue, Stevens Point, Wisconsin 54481, United States
| | - Erin D. Speetzen
- Department of Chemistry, University of Wisconsin—Stevens Point, 2001 Fourth Avenue, Stevens Point, Wisconsin 54481, United States
| | - James B. Lawrence
- Department of Chemistry, University of Wisconsin—Stevens Point, 2001 Fourth Avenue, Stevens Point, Wisconsin 54481, United States
| | - Eric Bosch
- Department of Chemistry, Missouri State University, 901 South National Avenue, Springfield, Missouri 65897, United States
| | - Nathan P. Bowling
- Department of Chemistry, University of Wisconsin—Stevens Point, 2001 Fourth Avenue, Stevens Point, Wisconsin 54481, United States
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47
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Bisz E, Piontek A, Dziuk B, Szostak R, Szostak M. Barriers to Rotation in ortho-Substituted Tertiary Aromatic Amides: Effect of Chloro-Substitution on Resonance and Distortion. J Org Chem 2018; 83:3159-3163. [DOI: 10.1021/acs.joc.8b00019] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Elwira Bisz
- Department of Chemistry, Opole University, 48 Oleska Street, Opole 45-052, Poland
| | - Aleksandara Piontek
- Department of Chemistry, Opole University, 48 Oleska Street, Opole 45-052, Poland
| | - Błażej Dziuk
- Department of Chemistry, Opole University, 48 Oleska Street, Opole 45-052, Poland
| | - Roman Szostak
- Department of Chemistry, Wroclaw University, F. Joliot-Curie 14, Wroclaw 50-383, Poland
| | - Michal Szostak
- Department of Chemistry, Opole University, 48 Oleska Street, Opole 45-052, Poland
- Department of Chemistry, Rutgers University, 73 Warren Street, Newark, New Jersey 07102, United States
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48
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Meng G, Shi S, Lalancette R, Szostak R, Szostak M. Reversible Twisting of Primary Amides via Ground State N-C(O) Destabilization: Highly Twisted Rotationally Inverted Acyclic Amides. J Am Chem Soc 2018; 140:727-734. [PMID: 29240413 DOI: 10.1021/jacs.7b11309] [Citation(s) in RCA: 141] [Impact Index Per Article: 23.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Since the seminal studies by Pauling in 1930s, planarity has become the defining characteristic of the amide bond. Planarity of amides has central implications for the reactivity and chemical properties of amides of relevance to a range of chemical disciplines. While the vast majority of amides are planar, nonplanarity has a profound effect on the properties of the amide bond, with the most common method to restrict the amide bond relying on the incorporation of the amide function into a rigid cyclic ring system. In a major departure from this concept, here, we report the first class of acyclic twisted amides that can be prepared, reversibly, from common primary amides in a single, operationally trivial step. Di-tert-butoxycarbonylation of the amide nitrogen atom yields twisted amides in which the amide bond exhibits nearly perpendicular twist. Full structural characterization of a range of electronically diverse compounds from this new class of twisted amides is reported. Through reactivity studies we demonstrate unusual properties of the amide bond, wherein selective cleavage of the amide bond can be achieved by a judicious choice of the reaction conditions. Through computational studies we evaluate structural and energetic details pertaining to the amide bond deformation. The ability to selectively twist common primary amides, in a reversible manner, has important implications for the design and application of the amide bond nonplanarity in structural chemistry, biochemistry and organic synthesis.
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Affiliation(s)
- Guangrong Meng
- Department of Chemistry, Rutgers University , 73 Warren Street, Newark, New Jersey 07102, United States
| | - Shicheng Shi
- Department of Chemistry, Rutgers University , 73 Warren Street, Newark, New Jersey 07102, United States
| | - Roger Lalancette
- Department of Chemistry, Rutgers University , 73 Warren Street, Newark, New Jersey 07102, United States
| | - Roman Szostak
- Department of Chemistry, Wroclaw University , F. Joliot-Curie 14, Wroclaw 50-383, Poland
| | - Michal Szostak
- Department of Chemistry, Rutgers University , 73 Warren Street, Newark, New Jersey 07102, United States
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Bhattacharjee I, Ghosh N, Raina A, Dasgupta J, Ray D. Conformational switching via an intramolecular H-bond modulates the fluorescence lifetime in a novel coumarin–imidazole conjugate. Phys Chem Chem Phys 2018; 20:6060-6072. [DOI: 10.1039/c7cp07274k] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Achieving synthetic control over light-driven molecular dynamics is essential for designing complex molecule-based devices.
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Affiliation(s)
| | - Nita Ghosh
- Department of Chemical Sciences
- Tata Institute of Fundamental Research
- India
| | - Abhinav Raina
- Department of Chemistry
- School of Natural Sciences
- India
| | | | - Debdas Ray
- Department of Chemistry
- School of Natural Sciences
- India
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50
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Jeon HG, Lee HK, Lee S, Jeong KS. Foldamer-based helicate displaying reversible switching between two distinct conformers. Chem Commun (Camb) 2018; 54:5740-5743. [DOI: 10.1039/c8cc02758g] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A foldamer-based double-stranded helicate displays reversible switching between two distinct helicate conformers in response to temperature.
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Affiliation(s)
- Hae-Geun Jeon
- Department of Chemistry
- Yonsei University
- Seoul 03722
- Korea
| | - Hyun Kyung Lee
- Department of Chemistry
- Yonsei University
- Seoul 03722
- Korea
| | - Seungwon Lee
- Department of Chemistry
- Yonsei University
- Seoul 03722
- Korea
| | - Kyu-Sung Jeong
- Department of Chemistry
- Yonsei University
- Seoul 03722
- Korea
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