1
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Wu HY, Shi X, Zhou ZH, Liu Y, Cheng XR, Yang YB, Kang XY, Guo Y, Zeng KW, Wang BJ, Sun XM, Chen PN, Peng HS. Seamlessly-integrated Textile Electric Circuit Enabled by Self-connecting Interwoven Points. CHINESE JOURNAL OF POLYMER SCIENCE 2022. [DOI: 10.1007/s10118-022-2829-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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2
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Ma Y, Qin R, Xu M, Jiang X, Sheng Y, Wang M, Zhang W, Lu X. Wide temperature range damping polyurethane elastomer based on dynamic disulfide bonds. J Appl Polym Sci 2022. [DOI: 10.1002/app.51453] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Yuanhao Ma
- School of Materials Science and Engineering South China University of Technology Guangzhou China
| | - Rui Qin
- School of Materials Science and Engineering South China University of Technology Guangzhou China
| | - Min Xu
- School of Materials Science and Engineering South China University of Technology Guangzhou China
| | - Xiaolin Jiang
- School of Materials Science and Engineering South China University of Technology Guangzhou China
| | - Yeming Sheng
- School of Materials Science and Engineering South China University of Technology Guangzhou China
| | - Minhui Wang
- School of Materials Science and Engineering South China University of Technology Guangzhou China
| | - Wencong Zhang
- School of Materials Science and Engineering South China University of Technology Guangzhou China
| | - Xun Lu
- School of Materials Science and Engineering South China University of Technology Guangzhou China
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3
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Wen N, Song T, Ji Z, Jiang D, Wu Z, Wang Y, Guo Z. Recent advancements in self-healing materials: Mechanicals, performances and features. REACT FUNCT POLYM 2021. [DOI: 10.1016/j.reactfunctpolym.2021.105041] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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4
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Mathuri A, Pramanik M, Parida A, Mal P. Disulfide metathesis via sulfur⋯iodine interaction and photoswitchability. Org Biomol Chem 2021; 19:8539-8543. [PMID: 34546277 DOI: 10.1039/d1ob01581h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The idea of constitutional dynamic chemistry (CDC) and dynamic combinatorial chemistry (DCC) is widespread in the literature using the chemistry of disulfides. The synthesis of unsymmetrical diaryl disulfides is challenging due to the presence of a weak S-S bond. We report herein the synthesis of unsymmetrical diaryl disulfides from two symmetrical disulfides via a cross-metathesis reaction which was controlled by a weak sulfur⋯iodine (S⋯I) interaction. The unsymmetrical disulfides were stable in acetonitrile solution in the presence of N-iodosuccinimide (NIS), and found to be reversibly photoswitchable to the symmetrical disulfides under visible light irradiation.
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Affiliation(s)
- Ashis Mathuri
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), HBNI, Bhubaneswar, PO Bhimpur-Padanpur, Via Jatni, District Khurda, Odisha 752050, India.
| | - Milan Pramanik
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), HBNI, Bhubaneswar, PO Bhimpur-Padanpur, Via Jatni, District Khurda, Odisha 752050, India.
| | - Amarchand Parida
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), HBNI, Bhubaneswar, PO Bhimpur-Padanpur, Via Jatni, District Khurda, Odisha 752050, India.
| | - Prasenjit Mal
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), HBNI, Bhubaneswar, PO Bhimpur-Padanpur, Via Jatni, District Khurda, Odisha 752050, India.
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5
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Preparation and Properties of Self-Healing Waterborne Polyurethane Based on Dynamic Disulfide Bond. Polymers (Basel) 2021; 13:polym13172936. [PMID: 34502976 PMCID: PMC8434390 DOI: 10.3390/polym13172936] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Revised: 08/25/2021] [Accepted: 08/26/2021] [Indexed: 11/16/2022] Open
Abstract
A self-healing waterborne polyurethane (WPU) materials containing dynamic disulfide (SS) bond was prepared by introducing SS bond into polymer materials. The zeta potential revealed that all the synthesized WPU emulsions displayed excellent stability, and the particle size of them was about 100 nm. The characteristic peaks of N-H and S-S in urethane were verified by FTIR, and the chemical environment of all elements were confirmed by the XPS test. Furthermore, the tensile strength, self-healing process and self-healing efficiency of the materials were quantitatively evaluated by tensile measurements. The results showed that the self-healing efficiency could reach 96.14% when the sample was heat treated at 70 °C for 4 h. In addition, the material also showed a good reprocessing performance, and the tensile strength of the reprocessed film was 3.39 MPa.
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6
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Drożdż W, Walczak A, Stefankiewicz AR. Simultaneous Formation of a Fully Organic Triply Dynamic Combinatorial Library. Org Lett 2021; 23:3641-3645. [PMID: 33904751 PMCID: PMC8289287 DOI: 10.1021/acs.orglett.1c01042] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
![]()
Here we report the
simultaneous formation of doubly and triply
dynamic libraries as a result of exchange reactions between functionalized
organic building blocks. A combination of three different reversible
covalent linkages involving a boronate ester transesterification along
with an imine and disulfide exchange was employed to generate a new
type of fully organic triply dynamic molecular assembly.
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Affiliation(s)
- Wojciech Drożdż
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznańskiego 8, 61-614 Poznań, Poland.,Center for Advanced Technologies, Adam Mickiewicz University, Uniwersytetu Poznańskiego 10, 61-614 Poznań, Poland
| | - Anna Walczak
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznańskiego 8, 61-614 Poznań, Poland.,Center for Advanced Technologies, Adam Mickiewicz University, Uniwersytetu Poznańskiego 10, 61-614 Poznań, Poland
| | - Artur R Stefankiewicz
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznańskiego 8, 61-614 Poznań, Poland.,Center for Advanced Technologies, Adam Mickiewicz University, Uniwersytetu Poznańskiego 10, 61-614 Poznań, Poland
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7
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Cuminet F, Caillol S, Dantras É, Leclerc É, Ladmiral V. Neighboring Group Participation and Internal Catalysis Effects on Exchangeable Covalent Bonds: Application to the Thriving Field of Vitrimer Chemistry. Macromolecules 2021. [DOI: 10.1021/acs.macromol.0c02706] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
| | | | - Éric Dantras
- CIRIMAT Physique des Polymères, Université de Toulouse, CNRS, Université Toulouse 3 - Paul Sabatier, 118 Route de Narbonne, 31062 Toulouse, France
| | - Éric Leclerc
- ICGM, Univ Montpellier, CNRS, ENSCM, Montpellier, France
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8
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Stretchable, robust and reprocessable poly(siloxane-urethanes) elastomers based on exchangeable aromatic disulfides. POLYMER 2021. [DOI: 10.1016/j.polymer.2021.123588] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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9
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Preparation of mechanically robust and autonomous self-healable elastomer based on multiple dynamic interactions. Eur Polym J 2021. [DOI: 10.1016/j.eurpolymj.2020.110257] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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10
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Cecot P, Walczak A, Markiewicz G, Stefankiewicz AR. Gating the photoactivity of azobenzene-type ligands trapped within a dynamic system of an M 4L 6 tetrahedral cage, an M 2L 2 metallocycle and mononuclear ML n complexes. Inorg Chem Front 2021. [DOI: 10.1039/d1qi01063h] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Complexation of metal ions by a ligand bearing a azobenzene linker yielded two types of complexes: an [M2L2]4+ metallocycle and an [M4L6]8+ tetrahedral cage, which can be further converted into libraries of mononuclear [M(L′/L′′)n]2+ species.
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Affiliation(s)
- Piotr Cecot
- Faculty of Chemistry, Adam Mickiewicz University, ul. Uniwersytetu Poznańskiego 8, 61-614 Poznań, Poland
- Center for Advanced Technologies, Adam Mickiewicz University, Poznań, ul. Uniwersytetu Poznańskiego 10, 61-614 Poznań, Poland
| | - Anna Walczak
- Faculty of Chemistry, Adam Mickiewicz University, ul. Uniwersytetu Poznańskiego 8, 61-614 Poznań, Poland
- Center for Advanced Technologies, Adam Mickiewicz University, Poznań, ul. Uniwersytetu Poznańskiego 10, 61-614 Poznań, Poland
| | - Grzegorz Markiewicz
- Center for Advanced Technologies, Adam Mickiewicz University, Poznań, ul. Uniwersytetu Poznańskiego 10, 61-614 Poznań, Poland
| | - Artur R. Stefankiewicz
- Faculty of Chemistry, Adam Mickiewicz University, ul. Uniwersytetu Poznańskiego 8, 61-614 Poznań, Poland
- Center for Advanced Technologies, Adam Mickiewicz University, Poznań, ul. Uniwersytetu Poznańskiego 10, 61-614 Poznań, Poland
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11
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Gao H, Sun Y, Wang M, Wu B, Han G, Jin L, Zhang K, Xia Y. Self-healable and reprocessable acrylate-based elastomers with exchangeable disulfide crosslinks by thiol-ene click chemistry. POLYMER 2021. [DOI: 10.1016/j.polymer.2020.123132] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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12
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Paul A, Martins LMDRS, Karmakar A, Kuznetsov ML, C. Guedes da Silva MF, Pombeiro AJL. Zn(II)-to-Cu(II) Transmetalation in an Amide Functionalized Complex and Catalytic Applications in Styrene Oxidation and Nitroaldol Coupling. Molecules 2020; 25:E2644. [PMID: 32517273 PMCID: PMC7321079 DOI: 10.3390/molecules25112644] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Revised: 06/03/2020] [Accepted: 06/04/2020] [Indexed: 11/16/2022] Open
Abstract
The mononuclear zinc(II) complex cis-[ZnL2(H2O)2] (1; L = 4-(pyridin-3-ylcarbamoyl)benzoate) was synthesized and characterized. By soaking crystals of 1 in a mixture of DMF-H2O solution containing a slight excess of Cu(NO3)2 × 3H2O a transmetalation reaction occurred affording the related copper(II) complex trans-[CuL2(H2O)2] (2). The structures of the compounds were authenticated by single crystal X-ray diffraction revealing, apart from a change in the isomerism, an alteration in the relative orientation of the chelating carboxylate groups and of the pyridine moieties. H-bond interactions stabilize both geometries and expand them into two-dimensional (2D) networks. The transmetalation was confirmed by SEM-EDS analysis. Moreover, the thermodynamic feasibility of the transmetalation is demonstrated by density-functional theory (DFT) studies. The catalytic activities of 1 and 2 for the oxidation of styrene and for the nitroaldol (Henry) C-C coupling reaction were investigated. The copper(II) compound 2 acts as heterogeneous catalyst for the microwave-assisted oxidation of styrene with aqueous hydrogen peroxide, yielding selectively (>99%) benzaldehyde up to 66% of conversion and with a turnover frequency (TOF) of 132 h-1. The zinc(II) complex 1 is the most active catalyst (up to 87% yield) towards the nitroaldol (Henry) coupling reaction between benzaldehyde and nitro-methane or -ethane to afford the corresponding β-nitro alcohols. The reaction of benzaldehyde with nitroethane in the presence of 1 produced 2-nitro-1-phenylpropanol in the syn and the anti diastereoisomeric forms, with a considerable higher selectivity towards the former (66:34).
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Affiliation(s)
- Anup Paul
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisboa, Portugal; (A.K.); (M.L.K.)
| | - Luísa M. D. R. S. Martins
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisboa, Portugal; (A.K.); (M.L.K.)
| | | | | | - M. Fátima C. Guedes da Silva
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisboa, Portugal; (A.K.); (M.L.K.)
| | - Armando J. L. Pombeiro
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisboa, Portugal; (A.K.); (M.L.K.)
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13
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Biot N, Bonifazi D. Concurring Chalcogen‐ and Halogen‐Bonding Interactions in Supramolecular Polymers for Crystal Engineering Applications. Chemistry 2020; 26:2904-2913. [DOI: 10.1002/chem.201904762] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2019] [Indexed: 12/14/2022]
Affiliation(s)
- Nicolas Biot
- School of Chemistry Cardiff University Park Place CF10 3AT Cardiff UK
| | - Davide Bonifazi
- School of Chemistry Cardiff University Park Place CF10 3AT Cardiff UK
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14
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Kathan M, Jurissek C, Kovaříček P, Hecht S. Imine‐based dynamic polymer networks as photoprogrammable amine sensing devices. ACTA ACUST UNITED AC 2019. [DOI: 10.1002/pola.29518] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Michael Kathan
- Department of Chemistry & IRIS Adlershof Humboldt‐Universität zu Berlin & IRIS Adlershof Brook‐Taylor Str. 2, 12489 Berlin Germany
| | - Christoph Jurissek
- Department of Chemistry & IRIS Adlershof Humboldt‐Universität zu Berlin & IRIS Adlershof Brook‐Taylor Str. 2, 12489 Berlin Germany
| | - Petr Kovaříček
- Department of Low‐Dimensional Systems J. Heyrovsky Institute of Physical Chemistry of the ASCR v. v. i., Dolejškova 2155/3, 18223 Praha 8 Czech Republic
| | - Stefan Hecht
- Department of Chemistry & IRIS Adlershof Humboldt‐Universität zu Berlin & IRIS Adlershof Brook‐Taylor Str. 2, 12489 Berlin Germany
- DWI–Leibniz Institute for Interactive Materials Forckenbeckstrasse 50, 52056 Aachen Germany
- Institute of Technicial and Macromolecular Chemistry RWTH Aachen University Worringerweg 2, 52074 Aachen Germany
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15
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Konopka M, Cecot P, Ulrich S, Stefankiewicz AR. Tuning the Solubility of Self-Assembled Fluorescent Aromatic Cages Using Functionalized Amino Acid Building Blocks. Front Chem 2019; 7:503. [PMID: 31380348 PMCID: PMC6647868 DOI: 10.3389/fchem.2019.00503] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Accepted: 07/01/2019] [Indexed: 01/03/2023] Open
Abstract
We previously reported novel fluorescent aromatic cages that are self-produced using a set of orthogonal dynamic covalent reactions, operating simultaneously in one-pot, to assemble up to 10 components through 12 reactions into a single cage-type structure. We now introduce N-functionalized amino acids as new building blocks that enable tuning the solubility and analysis of the resulting cages. A convenient divergent synthetic approach was developed to tether different side chains on the N-terminal of a cysteine-derived building block. Our studies show that this chemical functionalization does not prevent the subsequent self-assembly and effective formation of desired cages. While the originally described cages required 94% DMSO, the new ones bearing hydrophobic side chains were found soluble in organic solvents (up to 75% CHCl3), and those grafted with hydrophilic side chains were soluble in water (up to 75% H2O). Fluorescence studies confirmed that despite cage functionalization the aggregation-induced emission properties of those architectures are retained. Thus, this work significantly expands the range of solvents in which these self-assembled cage compounds can be generated, which in turn should enable new applications, possibly as fluorescent sensors.
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Affiliation(s)
- Marcin Konopka
- Faculty of Chemistry, Adam Mickiewicz University, Poznań, Poland
- Center for Advanced Technologies, Adam Mickiewicz University, Poznań, Poland
| | - Piotr Cecot
- Faculty of Chemistry, Adam Mickiewicz University, Poznań, Poland
- Center for Advanced Technologies, Adam Mickiewicz University, Poznań, Poland
| | - Sébastien Ulrich
- Institut des Biomolécules Max Mousseron (IBMM), UMR 5247, CNRS, Université de Montpellier, ENSCM, Ecole Nationale Supérieure de Chimie de Montpellier, Montpellier, France
| | - Artur R. Stefankiewicz
- Faculty of Chemistry, Adam Mickiewicz University, Poznań, Poland
- Center for Advanced Technologies, Adam Mickiewicz University, Poznań, Poland
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16
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Jia H, Chang K, Gu SY. Synthesis and Properties of Reversible Disulfide Bond-based Self-healing Polyurethane with Triple Shape Memory Properties. CHINESE JOURNAL OF POLYMER SCIENCE 2019. [DOI: 10.1007/s10118-019-2268-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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17
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Kennedy ADW, de Haas N, Iranmanesh H, Luis ET, Shen C, Wang P, Price JR, Donald WA, Andréasson J, Huang F, Beves JE. Diastereoselective Control of Tetraphenylethene Reactivity by Metal Template Self-Assembly. Chemistry 2019; 25:5708-5718. [PMID: 30775812 DOI: 10.1002/chem.201806259] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Revised: 01/21/2019] [Indexed: 11/12/2022]
Abstract
The reaction of 4,4',4'',4'''-(ethene-1,1,2,2-tetrayl)tetraaniline with 2-pyridinecarboxaldehyde and iron(II) chloride resulted, after aqueous workup, in the diastereoselective formation of an [Fe2 L3 ]4+ triple-stranded helicate structure, irrespective of the stoichiometry employed. The helicate structure was characterized in solution by multinuclear NMR spectroscopy, and in the solid state by single-crystal X-ray crystallography. The reaction of iron(II) tetrafluoroborate or iron(II) bistriflimide with the tetraaniline and 2-pyridinecarboxaldehyde allowed the formation of an [Fe8 L6 ]16+ cube when the appropriate stoichiometry was used, but these structures were unstable with respect to hydrolysis. The pendant amine groups on the helicate can be functionalized by reaction with acid chlorides or anhydrides, and the resulting functionalized tetraphenylethene (TPE) units were isolated by the reaction of the helicate with tris(2-aminoethyl)amine. The emission properties of the TPE units were studied in THF/water mixtures, and they were found by dynamic light scattering to self-assemble into large (av. diameter 250 nm) structures.
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Affiliation(s)
| | | | | | - Ena T Luis
- School of Chemistry, UNSW Sydney, Sydney, NSW, 2052, Australia
| | - Chao Shen
- School of Chemistry, UNSW Sydney, Sydney, NSW, 2052, Australia
| | - Pi Wang
- School of Chemistry, UNSW Sydney, Sydney, NSW, 2052, Australia.,State Key Laboratory of Chemical Engineering, Center for Chemistry of High-Performance & Novel Materials, Department of Chemistry, Zhejiang University, Hangzhou, 310027, China
| | - Jason R Price
- ANSTO-Australian Synchrotron, 800 Blackburn Road, Clayton, Victoria, 3168, Australia
| | | | - Joakim Andréasson
- Department of Chemical and Biological Engineering, Chalmers University of Technology, 412 96, Göteborg, Sweden
| | - Feihe Huang
- State Key Laboratory of Chemical Engineering, Center for Chemistry of High-Performance & Novel Materials, Department of Chemistry, Zhejiang University, Hangzhou, 310027, China
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18
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Reuther JF, Dahlhauser SD, Anslyn EV. Tunable Orthogonal Reversible Covalent (TORC) Bonds: Dynamic Chemical Control over Molecular Assembly. Angew Chem Int Ed Engl 2019; 58:74-85. [PMID: 30098086 PMCID: PMC10851707 DOI: 10.1002/anie.201808371] [Citation(s) in RCA: 75] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2018] [Indexed: 11/08/2022]
Abstract
Dynamic assembly of macromolecules in biological systems is one of the fundamental processes that facilitates life. Although such assembly most commonly uses noncovalent interactions, a set of dynamic reactions involving reversible covalent bonding is actively being exploited for the design of functional materials, bottom-up assembly, and molecular machines. This Minireview highlights recent implementations and advancements in the area of tunable orthogonal reversible covalent (TORC) bonds for these purposes, and provides an outlook for their expansion, including the development of synthetically encoded polynucleotide mimics.
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Affiliation(s)
- James F. Reuther
- Department of Chemistry, University of Texas at Austin Austin, TX (USA)
- Department of Chemistry, University of Massachusetts Lowell, Lowell, MA (USA)
| | | | - Eric V. Anslyn
- Department of Chemistry, University of Texas at Austin Austin, TX (USA)
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19
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Orrillo AG, Escalante AM, Martinez-Amezaga M, Cabezudo I, Furlan RLE. Molecular Networks in Dynamic Multilevel Systems. Chemistry 2018; 25:1118-1127. [DOI: 10.1002/chem.201804143] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Revised: 09/17/2018] [Indexed: 11/07/2022]
Affiliation(s)
- A. Gastón Orrillo
- Farmacognosia, Facultad de Ciencias Bioquímicas y Farmacéuticas; Universidad Nacional de Rosario-CONICET; S2002LRK Rosario Argentina
| | - Andrea M. Escalante
- Farmacognosia, Facultad de Ciencias Bioquímicas y Farmacéuticas; Universidad Nacional de Rosario-CONICET; S2002LRK Rosario Argentina
| | - Maitena Martinez-Amezaga
- Farmacognosia, Facultad de Ciencias Bioquímicas y Farmacéuticas; Universidad Nacional de Rosario-CONICET; S2002LRK Rosario Argentina
| | - Ignacio Cabezudo
- Farmacognosia, Facultad de Ciencias Bioquímicas y Farmacéuticas; Universidad Nacional de Rosario-CONICET; S2002LRK Rosario Argentina
| | - Ricardo L. E. Furlan
- Farmacognosia, Facultad de Ciencias Bioquímicas y Farmacéuticas; Universidad Nacional de Rosario-CONICET; S2002LRK Rosario Argentina
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20
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Reuther JF, Dahlhauser SD, Anslyn EV. Einstellbare orthogonale reversible kovalente Bindungen: dynamische Kontrolle über die molekulare Selbstorganisation. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201808371] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- James F. Reuther
- Department of Chemistry University of Texas at Austin Austin TX USA
- Department of Chemistry University of Massachusetts Lowell Lowell MA USA
| | | | - Eric V. Anslyn
- Department of Chemistry University of Texas at Austin Austin TX USA
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21
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Enhancement of the stimuli-responsiveness and photo-stability of dynamic diselenide bonds and diselenide-containing polymers by neighboring aromatic groups. POLYMER 2018. [DOI: 10.1016/j.polymer.2018.09.022] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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22
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Chen JH, Hu DD, Li YD, Meng F, Zhu J, Zeng JB. Castor oil derived poly(urethane urea) networks with reprocessibility and enhanced mechanical properties. POLYMER 2018. [DOI: 10.1016/j.polymer.2018.04.013] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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23
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Ruipérez F, Galdeano M, Gimenez E, Matxain JM. Sulfenamides as Building Blocks for Efficient Disulfide-Based Self-Healing Materials. A Quantum Chemical Study. ChemistryOpen 2018; 7:248-255. [PMID: 29531888 PMCID: PMC5838392 DOI: 10.1002/open.201800003] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2018] [Indexed: 11/29/2022] Open
Abstract
The theoretical self-healing capacity of new sulfenamide-based disulfides is estimated by using theoretical methods of quantum chemistry. Starting from previously studied aromatic disulfides, the influence of inserting a NH group between the disulfide and the phenyl ring (forming the sulfenamide), as well as the role of the phenyl ring in the self-healing process is analyzed. Three parameters are used in the evaluation of the self-healing capacity: i) the probability to generate sulfenyl radicals, which is the first step of the process; ii) the effect of the hydrogen bonding, which affects the mobility of the chains; and iii) the height of the exchange reaction barrier. The insertion of the NH group notably decreases the bond dissociation energy and, therefore, increases the probability to produce sulfenyl radicals and helps the approach of these radicals to neighboring disulfides, favoring the self-healing process. The role of the phenyl rings is clearly observed in the reaction barriers, where the π-π stacking interactions notably stabilize the transition states, resulting in larger rate constants. Nevertheless, this stabilization is somewhat reduced in the aromatic sulfenamides, owing to a less effective π-π interaction. Therefore, the sulfenamide-based aromatic disulfides may be considered as promising candidates for the design of efficient self-healing materials.
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Affiliation(s)
- Fernando Ruipérez
- POLYMATUniversity of the Basque Country UPV/EHUJoxe Mari Korta Center, Avda. Tolosa 7220018Donostia-San SebastiánSpain
| | - Maialen Galdeano
- Kimika FakultateaEuskal Herriko Unibertsitatea UPV/EHU, and Donostia International Physics Center (DIPC), P.K. 107220080Donostia, EuskadiSpain
| | - Ekiñe Gimenez
- Kimika FakultateaEuskal Herriko Unibertsitatea UPV/EHU, and Donostia International Physics Center (DIPC), P.K. 107220080Donostia, EuskadiSpain
| | - Jon M. Matxain
- Kimika FakultateaEuskal Herriko Unibertsitatea UPV/EHU, and Donostia International Physics Center (DIPC), P.K. 107220080Donostia, EuskadiSpain
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24
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Collins MS, Phan NM, Zakharov LN, Johnson DW. Coupling Metaloid-Directed Self-Assembly and Dynamic Covalent Systems as a Route to Large Organic Cages and Cyclophanes. Inorg Chem 2018; 57:3486-3496. [PMID: 29412648 DOI: 10.1021/acs.inorgchem.7b02716] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The synthesis of large cyclic and caged disulfide structures was achieved by pnictogen-assisted iodine oxidation starting from self-assembled pnictogen thiolate complexes. The directing behavior of pnictogen enables rapid and selective syntheses of many discrete disulfide assemblies over competing oligomers/polymers, ranging from structures that are small and strained to those that are large and multifaceted, including 3D cages. Traditional cyclization reactions carried out under kinetic control are generally low-yielding, which often results in the formation of insoluble oligomers and polymers as unwanted side products. The prospect of self-assembling organic structures efficiently under thermodynamic control adds an attractive tool for the synthesis of cyclophanes and other large cage compounds. This method of metaloid-directed self-assembly within a dynamic covalent system allows for the rapid and discriminant self-assembly of disulfide cyclophanes without the consequences sometimes seen in traditional cyclophane syntheses such as poor yields, long reaction times, low ring-closing selectivity, and extensive purifications. The present paper provides an overview of this approach, explores the role of the pnictogen additive and solvent in this reaction, begins to test the limits of this strategy in complex 3D molecule formation, and extends our strategy to include one-pot syntheses that do not require the use of a pnictogen additive. This Viewpoint also includes an extended introduction to serve as a minireview highlighting the utility of a self-assembly approach to create organic cage structures. From a practical standpoint, the cyclophanes isolated from this method can serve as precursors in the production of insulating plastics (e.g., through the widely used parylene polymerization process, which uses derivatives of paracyclophane as monomers) or as potential hosts for molecular separations or capture.
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Affiliation(s)
- Mary S Collins
- Department of Chemistry & Biochemistry and the Materials Science Institute , University of Oregon , Eugene , Oregon 97403-1253 , United States
| | - Ngoc-Minh Phan
- Department of Chemistry & Biochemistry and the Materials Science Institute , University of Oregon , Eugene , Oregon 97403-1253 , United States
| | - Lev N Zakharov
- Department of Chemistry & Biochemistry and the Materials Science Institute , University of Oregon , Eugene , Oregon 97403-1253 , United States.,Center for Advanced Materials Characterization in Oregon (CAMCOR) , University of Oregon , Eugene , Oregon 97403-1241 , United States
| | - Darren W Johnson
- Department of Chemistry & Biochemistry and the Materials Science Institute , University of Oregon , Eugene , Oregon 97403-1253 , United States
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25
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Nevejans S, Ballard N, Miranda JI, Reck B, Asua JM. The underlying mechanisms for self-healing of poly(disulfide)s. Phys Chem Chem Phys 2018; 18:27577-27583. [PMID: 27722578 DOI: 10.1039/c6cp04028d] [Citation(s) in RCA: 88] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Recently, self-healing polymers based on disulfide compounds have gained attention due to the versatile chemistry of disulfide bonds and easy implementation into polymeric materials. However, the underlying mechanisms of disulfide exchange which induce the self-healing effect in poly(disulfide)s remain unclear. In this work, we elucidate the process of disulfide exchange using a variety of spectroscopic techniques. Comparing a model exchange reaction of 4-aminophenyl disulfide and diphenyl disulfide with modified reactions in the presence of additional radical traps or radical sources confirmed that the exchange reaction between disulfide compounds occurred via a radical-mediated mechanism. Furthermore, when investigating the effect of catalysts on the model exchange reaction, it could be concluded that catalysts enhance the disulfide exchange reaction through the formation of S-based anions in addition to the radical-mediated mechanism.
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Affiliation(s)
- Sil Nevejans
- POLYMAT, University of the Basque Country UPV/EHU, Joxe Mari Korta Center, Avenida Tolosa 72, 20018 Donostia-San Sebastián, Spain.
| | - Nicholas Ballard
- POLYMAT, University of the Basque Country UPV/EHU, Joxe Mari Korta Center, Avenida Tolosa 72, 20018 Donostia-San Sebastián, Spain.
| | - José I Miranda
- SGIker, NMR Facility, University of the Basque Country UPV/EHU, Spain
| | - Bernd Reck
- Dispersions and Colloidal Materials, BASF SE, 67056 Ludwigshafen, Germany
| | - José M Asua
- POLYMAT, University of the Basque Country UPV/EHU, Joxe Mari Korta Center, Avenida Tolosa 72, 20018 Donostia-San Sebastián, Spain.
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26
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Kim SM, Jeon H, Shin SH, Park SA, Jegal J, Hwang SY, Oh DX, Park J. Superior Toughness and Fast Self-Healing at Room Temperature Engineered by Transparent Elastomers. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:1705145. [PMID: 29131415 DOI: 10.1002/adma.201705145] [Citation(s) in RCA: 299] [Impact Index Per Article: 49.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2017] [Revised: 09/27/2017] [Indexed: 05/28/2023]
Abstract
The most important properties of self-healing polymers are efficient recovery at room temperature and prolonged durability. However, these two characteristics are contradictory, making it difficult to optimize them simultaneously. Herein, a transparent and easily processable thermoplastic polyurethane (TPU) with the highest reported tensile strength and toughness (6.8 MPa and 26.9 MJ m-3 , respectively) is prepared. This TPU is superior to reported contemporary room-temperature self-healable materials and conveniently heals within 2 h through facile aromatic disulfide metathesis engineered by hard segment embedded aromatic disulfides. After the TPU film is cut in half and respliced, the mechanical properties recover to more than 75% of those of the virgin sample within 2 h. Hard segments with an asymmetric alicyclic structure are more effective than those with symmetric alicyclic, linear aliphatic, and aromatic structures. An asymmetric structure provides the optimal metathesis efficiency for the embedded aromatic disulfide while preserving the remarkable mechanical properties of TPU, as indicated by rheological and surface investigations. The demonstration of a scratch-detecting electrical sensor coated on a tough TPU film capable of auto-repair at room temperature suggests that this film has potential applications in the wearable electronics industry.
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Affiliation(s)
- Seon-Mi Kim
- Research Center for Bio-Based Chemistry, Korea Research Institute of Chemical Technology (KRICT), Ulsan, 44429, Republic of Korea
| | - Hyeonyeol Jeon
- Research Center for Bio-Based Chemistry, Korea Research Institute of Chemical Technology (KRICT), Ulsan, 44429, Republic of Korea
| | - Sung-Ho Shin
- Research Center for Bio-Based Chemistry, Korea Research Institute of Chemical Technology (KRICT), Ulsan, 44429, Republic of Korea
| | - Seul-A Park
- Research Center for Bio-Based Chemistry, Korea Research Institute of Chemical Technology (KRICT), Ulsan, 44429, Republic of Korea
| | - Jonggeon Jegal
- Research Center for Bio-Based Chemistry, Korea Research Institute of Chemical Technology (KRICT), Ulsan, 44429, Republic of Korea
| | - Sung Yeon Hwang
- Research Center for Bio-Based Chemistry, Korea Research Institute of Chemical Technology (KRICT), Ulsan, 44429, Republic of Korea
- Advanced Materials and Chemical Engineering, University of Science and Technology (UST), Daejeon, 34113, Republic of Korea
| | - Dongyeop X Oh
- Research Center for Bio-Based Chemistry, Korea Research Institute of Chemical Technology (KRICT), Ulsan, 44429, Republic of Korea
- Advanced Materials and Chemical Engineering, University of Science and Technology (UST), Daejeon, 34113, Republic of Korea
| | - Jeyoung Park
- Research Center for Bio-Based Chemistry, Korea Research Institute of Chemical Technology (KRICT), Ulsan, 44429, Republic of Korea
- Advanced Materials and Chemical Engineering, University of Science and Technology (UST), Daejeon, 34113, Republic of Korea
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27
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Struch N, Topić F, Schnakenburg G, Rissanen K, Lützen A. Electron-Deficient Pyridylimines: Versatile Building Blocks for Functional Metallosupramolecular Chemistry. Inorg Chem 2017; 57:241-250. [DOI: 10.1021/acs.inorgchem.7b02412] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Niklas Struch
- Kekulé-Institut
für Organische Chemie und Biochemie, Rheinische Friedrich-Wilhelms-Universität Bonn, Gerhard-Domagk-Straße 1, D-53121 Bonn, Germany
| | - Filip Topić
- University of Jyväskylä, Department of
Chemistry, Nanoscience Center, P.O. Box
35, 40014 Jyväskylä, Finland
| | - Gregor Schnakenburg
- Institut
für Anorganische Chemie, Rheinische Friedrich-Wilhelms-Universität Bonn, Gerhard-Domagk-Straße 1, D-53121 Bonn, Germany
| | - Kari Rissanen
- University of Jyväskylä, Department of
Chemistry, Nanoscience Center, P.O. Box
35, 40014 Jyväskylä, Finland
| | - Arne Lützen
- Kekulé-Institut
für Organische Chemie und Biochemie, Rheinische Friedrich-Wilhelms-Universität Bonn, Gerhard-Domagk-Straße 1, D-53121 Bonn, Germany
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28
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Matysiak BM, Nowak P, Cvrtila I, Pappas CG, Liu B, Komáromy D, Otto S. Antiparallel Dynamic Covalent Chemistries. J Am Chem Soc 2017; 139:6744-6751. [PMID: 28440073 PMCID: PMC5438195 DOI: 10.1021/jacs.7b02575] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The ability to design reaction networks with high, but addressable complexity is a necessary prerequisite to make advanced functional chemical systems. Dynamic combinatorial chemistry has proven to be a useful tool in achieving complexity, however with some limitations in controlling it. Herein we introduce the concept of antiparallel chemistries, in which the same functional group can be channeled into one of two reversible chemistries depending on a controllable parameter. Such systems allow both for achieving complexity, by combinatorial chemistry, and addressing it, by switching from one chemistry to another by controlling an external parameter. In our design the two antiparallel chemistries are thiol-disulfide exchange and thio-Michael addition, sharing the thiol as the common building block. By means of oxidation and reduction the system can be reversibly switched from predominantly thio-Michael chemistry to predominantly disulfide chemistry, as well as to any intermediate state. Both chemistries operate in water, at room temperature, and at mildly basic pH, which makes them a suitable platform for further development of systems chemistry.
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Affiliation(s)
- Bartosz M Matysiak
- Centre for Systems Chemistry, Stratingh Institute, University of Groningen , Nijenborgh 4, 9747 AG Groningen, The Netherlands.,Faculty of Chemistry, University of Warsaw , Pasteura 1, 02-093 Warsaw, Poland
| | - Piotr Nowak
- Centre for Systems Chemistry, Stratingh Institute, University of Groningen , Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Ivica Cvrtila
- Centre for Systems Chemistry, Stratingh Institute, University of Groningen , Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Charalampos G Pappas
- Centre for Systems Chemistry, Stratingh Institute, University of Groningen , Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Bin Liu
- Centre for Systems Chemistry, Stratingh Institute, University of Groningen , Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Dávid Komáromy
- Centre for Systems Chemistry, Stratingh Institute, University of Groningen , Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Sijbren Otto
- Centre for Systems Chemistry, Stratingh Institute, University of Groningen , Nijenborgh 4, 9747 AG Groningen, The Netherlands
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29
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Georgiou I, Kervyn S, Rossignon A, De Leo F, Wouters J, Bruylants G, Bonifazi D. Versatile Self-Adapting Boronic Acids for H-Bond Recognition: From Discrete to Polymeric Supramolecules. J Am Chem Soc 2017; 139:2710-2727. [PMID: 28051311 DOI: 10.1021/jacs.6b11362] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Because of the peculiar dynamic covalent reactivity of boronic acids to form tetraboronate derivatives, interest in using their aryl derivatives in materials science and supramolecular chemistry has risen. Nevertheless, their ability to form H-bonded complexes has been only marginally touched. Herein we report the first solution and solid-state binding studies of the first double-H-bonded DD·AA-type complexes of a series of aromatic boronic acids that adopt a syn-syn conformation with suitable complementary H-bonding acceptor partners. The first determination of the association constant (Ka) of ortho-substituted boronic acids in solution showed that Ka for 1:1 association is in the range between 300 and 6900 M-1. Crystallization of dimeric 1:1 and trimeric 1:2 and 2:1 complexes enabled an in-depth examination of these complexes in the solid state, proving the selection of the -B(OH)2 syn-syn conformer through a pair of frontal H-bonds with the relevant AA partner. Non-ortho-substituted boronic acids result in "flat" complexes. On the other hand, sterically demanding analogues bearing ortho substituents strive to retain their recognition properties by rotation of the ArB(OH)2 moiety, forming "T-shaped" complexes. Solid-state studies of a diboronic acid and a tetraazanaphthacene provided for the first time the formation of a supramolecular H-bonded polymeric ribbon. On the basis of the conformational dynamicity of the -B(OH)2 functional group, it is expected that these findings will also open new possibilities in metal-free catalysis or organic crystal engineering, where double-H-bonding donor boronic acids could act as suitable organocatalysts or templates for the development of functional materials with tailored organizational properties.
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Affiliation(s)
- Irene Georgiou
- Department of Chemistry, University of Namur (UNamur) , Rue de Bruxelles 61, 5000 Namur, Belgium
| | - Simon Kervyn
- Department of Chemistry, University of Namur (UNamur) , Rue de Bruxelles 61, 5000 Namur, Belgium
| | - Alexandre Rossignon
- Department of Chemistry, University of Namur (UNamur) , Rue de Bruxelles 61, 5000 Namur, Belgium.,School of Chemistry, Cardiff University , Park Place, Main Building, Cardiff CF10 3AT, U.K
| | - Federica De Leo
- Department of Chemistry, University of Namur (UNamur) , Rue de Bruxelles 61, 5000 Namur, Belgium
| | - Johan Wouters
- Department of Chemistry, University of Namur (UNamur) , Rue de Bruxelles 61, 5000 Namur, Belgium
| | - Gilles Bruylants
- Université Libre de Bruxelles , Ecole Polytechnique de Bruxelles, Campus du Solbosch, Avenue F. D. Roosevelt 50, 1050 Bruxelles, Belgium
| | - Davide Bonifazi
- Department of Chemistry, University of Namur (UNamur) , Rue de Bruxelles 61, 5000 Namur, Belgium.,School of Chemistry, Cardiff University , Park Place, Main Building, Cardiff CF10 3AT, U.K
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30
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Beaudoin D, Rominger F, Mastalerz M. Chiral Self-Sorting of [2+3] Salicylimine Cage Compounds. Angew Chem Int Ed Engl 2016; 56:1244-1248. [PMID: 28004471 DOI: 10.1002/anie.201610782] [Citation(s) in RCA: 138] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2016] [Revised: 11/28/2016] [Indexed: 12/23/2022]
Abstract
An inherently chiral C3 -symmetric triaminotribenzotriquinacene was condensed in racemic and enantiomerically pure form with a bis(salicylaldehyde) to form [2+3] salicylimine cage compounds. Investigations on the chiral self-sorting revealed that while entropy favors narcissistic self-sorting in solution, selective social self-sorting can be achieved by exploiting the difference in solubility between the homochiral and heterochiral cages. Gas sorption measurements further showed that seemingly small structural differences can have a significant impact on the surface area of microporous covalent cage compounds.
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Affiliation(s)
- Daniel Beaudoin
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, 69120, Heidelberg, Germany
| | - Frank Rominger
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, 69120, Heidelberg, Germany
| | - Michael Mastalerz
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, 69120, Heidelberg, Germany
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31
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Beaudoin D, Rominger F, Mastalerz M. Chiral Self‐Sorting of [2+3] Salicylimine Cage Compounds. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201610782] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Daniel Beaudoin
- Organisch-Chemisches Institut Ruprecht-Karls-Universität Heidelberg 69120 Heidelberg Germany
| | - Frank Rominger
- Organisch-Chemisches Institut Ruprecht-Karls-Universität Heidelberg 69120 Heidelberg Germany
| | - Michael Mastalerz
- Organisch-Chemisches Institut Ruprecht-Karls-Universität Heidelberg 69120 Heidelberg Germany
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32
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Azcune I, Odriozola I. Aromatic disulfide crosslinks in polymer systems: Self-healing, reprocessability, recyclability and more. Eur Polym J 2016. [DOI: 10.1016/j.eurpolymj.2016.09.023] [Citation(s) in RCA: 121] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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33
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Seifert HM, Ramirez Trejo K, Anslyn EV. Four Simultaneously Dynamic Covalent Reactions. Experimental Proof of Orthogonality. J Am Chem Soc 2016; 138:10916-24. [DOI: 10.1021/jacs.6b04532] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Helen M. Seifert
- Department
of Chemistry, University of Texas at Austin, Austin, Texas 78712, United States
| | - Karina Ramirez Trejo
- Department
of Chemistry, University of Texas at Austin, Austin, Texas 78712, United States
| | - Eric V. Anslyn
- Department
of Chemistry, University of Texas at Austin, Austin, Texas 78712, United States
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34
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Lascano S, Zhang KD, Wehlauch R, Gademann K, Sakai N, Matile S. The third orthogonal dynamic covalent bond. Chem Sci 2016; 7:4720-4724. [PMID: 30155121 PMCID: PMC6014071 DOI: 10.1039/c6sc01133k] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2016] [Accepted: 04/09/2016] [Indexed: 01/30/2023] Open
Abstract
Orthogonal dynamic covalent bonds are of interest for the construction of functional systems. The orthogonality of disulfide and hydrazone exchange under basic and acidic conditions, respectively, is well established. However, the integration of boronate esters as the third bond has failed so far because they exchanged too easily, especially under hydrazone exchange conditions. In this report, a collection of bioinspired catechols derived from adhesive natural products from cyanobacteria is screened with phenylboronic acids with proximal alcohols (benzoboroxoles), amines and fluorines to identify the least labile boronate esters. Moreover, Kool's 2-aminophenol catalysts are introduced to selectively accelerate hydrazone exchange without disturbing sufficiently inert boronate esters. Based on these results, we identified three different conditions to selectively exchange disulfides, hydrazones and boronate esters, that is to demonstrate the existence of three orthogonal dynamic covalent bonds. Moreover, their compatibility with functional systems is confirmed by successful hydrazone exchange in multicomponent surface architectures in the presence of intact boronate esters and disulfides.
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Affiliation(s)
- Santiago Lascano
- National Centre of Competence in Research (NCCR) , Molecular Systems Engineering (MSE) , Switzerland . http://www.nccr-mse.ch
- Department of Organic Chemistry , University of Geneva , Geneva , Switzerland . ; http://www.unige.ch/sciences/chiorg/matile/ ; ; Tel: +41 22 379 6523
| | - Kang-Da Zhang
- National Centre of Competence in Research (NCCR) , Molecular Systems Engineering (MSE) , Switzerland . http://www.nccr-mse.ch
- Department of Organic Chemistry , University of Geneva , Geneva , Switzerland . ; http://www.unige.ch/sciences/chiorg/matile/ ; ; Tel: +41 22 379 6523
| | - Robin Wehlauch
- National Centre of Competence in Research (NCCR) , Molecular Systems Engineering (MSE) , Switzerland . http://www.nccr-mse.ch
- Department of Chemistry , University of Zurich , Zurich , Switzerland
| | - Karl Gademann
- National Centre of Competence in Research (NCCR) , Molecular Systems Engineering (MSE) , Switzerland . http://www.nccr-mse.ch
- Department of Chemistry , University of Zurich , Zurich , Switzerland
| | - Naomi Sakai
- National Centre of Competence in Research (NCCR) , Molecular Systems Engineering (MSE) , Switzerland . http://www.nccr-mse.ch
- Department of Organic Chemistry , University of Geneva , Geneva , Switzerland . ; http://www.unige.ch/sciences/chiorg/matile/ ; ; Tel: +41 22 379 6523
| | - Stefan Matile
- National Centre of Competence in Research (NCCR) , Molecular Systems Engineering (MSE) , Switzerland . http://www.nccr-mse.ch
- Department of Organic Chemistry , University of Geneva , Geneva , Switzerland . ; http://www.unige.ch/sciences/chiorg/matile/ ; ; Tel: +41 22 379 6523
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35
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Affiliation(s)
- Sreenivasulu Bandi
- Department of Chemistry; Indian Institute of Technology Madras; Chennai 600036 India
| | - Dillip Kumar Chand
- Department of Chemistry; Indian Institute of Technology Madras; Chennai 600036 India
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36
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Orrillo AG, Escalante AM, Furlan RLE. Dithioacetal Exchange: A New Reversible Reaction for Dynamic Combinatorial Chemistry. Chemistry 2016; 22:6746-9. [PMID: 26990904 DOI: 10.1002/chem.201600208] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2016] [Indexed: 12/22/2022]
Abstract
Reversibility of dithioacetal bond formation is reported under acidic mild conditions. Its utility for dynamic combinatorial chemistry was explored by combining it with orthogonal disulfide exchange. In such a setup, thiols are positioned at the intersection of both chemistries, constituting a connecting node between temporally separated networks.
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Affiliation(s)
- A Gastón Orrillo
- Instituto de Investigaciones para el Descubrimiento de Fármacos de Rosario (IIDEFAR, UNR-CONICET), Ocampo y Esmeralda, Rosario, 2000), Argentina
| | - Andrea M Escalante
- Instituto de Investigaciones para el Descubrimiento de Fármacos de Rosario (IIDEFAR, UNR-CONICET), Ocampo y Esmeralda, Rosario, 2000), Argentina
| | - Ricardo L E Furlan
- Instituto de Investigaciones para el Descubrimiento de Fármacos de Rosario (IIDEFAR, UNR-CONICET), Ocampo y Esmeralda, Rosario, 2000), Argentina. .,Farmacognosia, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Suipacha 531, Rosario, 2000), Argentina.
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37
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A facile route to old and new cyclophanes via self-assembly and capture. Nat Commun 2016; 7:11052. [PMID: 27040370 PMCID: PMC4821999 DOI: 10.1038/ncomms11052] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2015] [Accepted: 02/11/2016] [Indexed: 11/08/2022] Open
Abstract
Cyclophanes are a venerable class of macrocyclic and/or cage compounds that often feature high strain, unusual conformations and quite surprising properties, many of which are legendary in physical organic chemistry. However, the discovery of new, diverse cyclophanes and derivatives has been hindered by syntheses that are traditionally low-yielding, requiring long reaction times, laborious purification steps and often extreme conditions. Herein, we demonstrate a new self-assembly route to a variety of discrete cyclic and caged disulfide structures, which can then be kinetically captured upon sulfur extrusion at room temperature to give a diversity of new thioether (hetera)cyclophanes in high yield. In addition to the synthesis of novel macrocycles (dimers through hexamers), this process provides an improved route to a known macrobicyclic trithiacyclophane. This technique also enables the facile isolation of a tetrahedral macrotricyclic tetrathiacyclophane in two steps at an ambient temperature.
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38
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Zhou K, Cao H, Gao P, Cui Z, Ding Y, Cai Y. Autocatalytic Self-Sorting in Biomimetic Polymer. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b00152] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Kaiyi Zhou
- State and Local Joint Engineering
Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory
of Advanced Functional Polymer Design and Application, Suzhou Key
Laboratory of Macromolecular Design and Precision Synthesis, College
of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Hui Cao
- State and Local Joint Engineering
Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory
of Advanced Functional Polymer Design and Application, Suzhou Key
Laboratory of Macromolecular Design and Precision Synthesis, College
of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Pan Gao
- State and Local Joint Engineering
Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory
of Advanced Functional Polymer Design and Application, Suzhou Key
Laboratory of Macromolecular Design and Precision Synthesis, College
of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Zhigang Cui
- State and Local Joint Engineering
Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory
of Advanced Functional Polymer Design and Application, Suzhou Key
Laboratory of Macromolecular Design and Precision Synthesis, College
of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Yi Ding
- State and Local Joint Engineering
Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory
of Advanced Functional Polymer Design and Application, Suzhou Key
Laboratory of Macromolecular Design and Precision Synthesis, College
of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Yuanli Cai
- State and Local Joint Engineering
Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory
of Advanced Functional Polymer Design and Application, Suzhou Key
Laboratory of Macromolecular Design and Precision Synthesis, College
of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
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39
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Nakai Y, Takahashi A, Goseki R, Otsuka H. Facile modification and fixation of diaryl disulphide-containing dynamic covalent polyesters by iodine-catalysed insertion-like addition reactions of styrene derivatives to disulphide units. Polym Chem 2016. [DOI: 10.1039/c6py00963h] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Insertion-like addition of disulphide-containing polyesters to styrene derivatives is reported, enabling facile control of various properties including dynamic covalent characteristics.
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Affiliation(s)
- Yukako Nakai
- Department of Organic and Polymeric Materials
- Tokyo Institute of Technology
- Tokyo
- Japan
| | - Akira Takahashi
- Department of Organic and Polymeric Materials
- Tokyo Institute of Technology
- Tokyo
- Japan
| | - Raita Goseki
- Department of Organic and Polymeric Materials
- Tokyo Institute of Technology
- Tokyo
- Japan
- Department of Chemical Science and Engineering
| | - Hideyuki Otsuka
- Department of Organic and Polymeric Materials
- Tokyo Institute of Technology
- Tokyo
- Japan
- Department of Chemical Science and Engineering
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40
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Matxain JM, Asua JM, Ruipérez F. Design of new disulfide-based organic compounds for the improvement of self-healing materials. Phys Chem Chem Phys 2015; 18:1758-70. [PMID: 26675660 DOI: 10.1039/c5cp06660c] [Citation(s) in RCA: 105] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Self-healing materials are a very promising kind of materials due to their capacity to repair themselves. Among others, diphenyl disulfide-based compounds (Ph2S2) appear to be among the best candidates to develop materials with optimum self-healing properties. However, few is known regarding both the reaction mechanism and the electronic structure that make possible such properties. In this vein, theoretical approaches are of great interest. In this work, we have carried out theoretical calculations on a wide set of different disulfide compounds, both aromatic and aliphatic, in order to elucidate the prevalent reaction mechanism and the necessary electronic conditions needed for improved self-healing properties. Two competitive mechanisms were considered, namely, the metathesis and the radical-mediated mechanism. According to our calculations, the radical-mediated mechanism is the responsible for this process. The formation of sulfenyl radicals strongly depends on the S-S bond strength, which can be modulated chemically by the use of proper derivatives. At this point, amino derivatives appear to be the most promising ones. In addition to the S-S bond strength, hydrogen bonding between disulfide chains seems to be relevant to favour the contact among disulfide units. This is crucial for the reaction to take place. The calculated hydrogen bonding energies are of the same order of magnitude as the S-S bond energies. Finally, reaction barriers have been analysed for some promising candidates. Two reaction mechanisms were compared, namely, the [2+2] metathesis reaction mechanism and the [2+1] radical-mediated mechanism. No computational evidence for the existence of any transition state for the metathesis mechanism was found, which indicates that the radical-mediated mechanism is the one responsible in the self-healing process of these materials. Interestingly, the calculated reaction barriers are around 10 kcal mol(-1) regardless the substituent employed. All these results suggest that the radical formation and the structural role of the hydrogen bonding prevale over kinetics. Having this in mind, as a conclusion, some new compounds are proposed for the design of future self-healing materials with improved features.
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Affiliation(s)
- Jon M Matxain
- Kimika Fakultatea, Euskal Herriko Unibertsitatea UPV/EHU and Donostia International Physics Center (DIPC), P.K. 1072, 20080 Donostia, Euskadi, Spain
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41
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Schmolke W, Perner N, Seiffert S. Dynamically Cross-Linked Polydimethylsiloxane Networks with Ambient-Temperature Self-Healing. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b01666] [Citation(s) in RCA: 92] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Willi Schmolke
- Institute
of Chemistry and Biochemistry, Freie Universität Berlin, Takustr. 3, D-14195 Berlin, Germany
- Soft
Matter and Functional Materials, Helmholtz-Zentrum Berlin, Hahn-Meitner-Platz
1, D-14109 Berlin, Germany
| | | | - Sebastian Seiffert
- Institute
of Chemistry and Biochemistry, Freie Universität Berlin, Takustr. 3, D-14195 Berlin, Germany
- Soft
Matter and Functional Materials, Helmholtz-Zentrum Berlin, Hahn-Meitner-Platz
1, D-14109 Berlin, Germany
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42
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Rocard L, Berezin A, De Leo F, Bonifazi D. Templated Chromophore Assembly by Dynamic Covalent Bonds. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201507186] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Lou Rocard
- Namur Research College (NARC) and Department of Chemistry University of Namur (UNamur), Rue de Bruxelles 61, Namur 5000 (Belgium)
| | - Andrey Berezin
- Namur Research College (NARC) and Department of Chemistry University of Namur (UNamur), Rue de Bruxelles 61, Namur 5000 (Belgium)
| | - Federica De Leo
- Namur Research College (NARC) and Department of Chemistry University of Namur (UNamur), Rue de Bruxelles 61, Namur 5000 (Belgium)
| | - Davide Bonifazi
- Namur Research College (NARC) and Department of Chemistry University of Namur (UNamur), Rue de Bruxelles 61, Namur 5000 (Belgium)
- Department of Pharmaceutical and Chemical Sciences and INSTM UdR Trieste, University of Trieste, Piazzale Europa 1, Trieste 34127 (Italy)
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43
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Rocard L, Berezin A, De Leo F, Bonifazi D. Templated Chromophore Assembly by Dynamic Covalent Bonds. Angew Chem Int Ed Engl 2015; 54:15739-43. [PMID: 26637106 DOI: 10.1002/anie.201507186] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2015] [Indexed: 11/10/2022]
Abstract
Through the simultaneous use of three orthogonal dynamic covalent reactions, namely disulfide, boronate, and acyl hydrazone formation, we conceived a facile and versatile protocol to spatially organize tailored chromophores, which absorb in the blue, red, and yellow regions, on a preprogrammed α-helix peptide. This approach allowed the assembly of the dyes in the desired ratio and spacing, as dictated by both the relative positioning and distribution of the recognition units on the peptide scaffold. Steady-state UV/Vis absorption and emission studies suggest an energy transfer from the yellow and red donors to the blue acceptor. A molecular dynamics simulation supports the experimental findings that the helical structure is maintained after the assembly and the three dyes are confined in defined conformational spaces.
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Affiliation(s)
- Lou Rocard
- Namur Research College (NARC) and Department of Chemistry University of Namur (UNamur), Rue de Bruxelles 61, Namur 5000 (Belgium)
| | - Andrey Berezin
- Namur Research College (NARC) and Department of Chemistry University of Namur (UNamur), Rue de Bruxelles 61, Namur 5000 (Belgium)
| | - Federica De Leo
- Namur Research College (NARC) and Department of Chemistry University of Namur (UNamur), Rue de Bruxelles 61, Namur 5000 (Belgium)
| | - Davide Bonifazi
- Namur Research College (NARC) and Department of Chemistry University of Namur (UNamur), Rue de Bruxelles 61, Namur 5000 (Belgium). .,Department of Pharmaceutical and Chemical Sciences and INSTM UdR Trieste, University of Trieste, Piazzale Europa 1, Trieste 34127 (Italy).
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44
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Sadownik JW, Philp D. A recognition-mediated reaction drives amplification within a dynamic library. Org Biomol Chem 2015; 13:10392-401. [PMID: 26324766 DOI: 10.1039/c5ob01621e] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
A single, appropriately designed, recognition event targets and transforms one of two reactive members of an exchanging pool of compounds through a recognition-mediated irreversible cycloaddition reaction, altering dramatically the final composition and kinetic behaviour of the dynamic library.
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Affiliation(s)
- Jan W Sadownik
- School of Chemistry and EaStCHEM, University of St Andrews, North Haugh, St Andrews, Fife KY16 9ST, UK.
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45
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Simultaneous Disulfide and Boronic Acid Ester Exchange in Dynamic Combinatorial Libraries. Int J Mol Sci 2015; 16:21858-72. [PMID: 26378519 PMCID: PMC4613285 DOI: 10.3390/ijms160921858] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2015] [Revised: 08/18/2015] [Accepted: 09/01/2015] [Indexed: 11/17/2022] Open
Abstract
Dynamic combinatorial chemistry has emerged as a promising tool for the discovery of complex receptors in supramolecular chemistry. At the heart of dynamic combinatorial chemistry are the reversible reactions that enable the exchange of building blocks between library members in dynamic combinatorial libraries (DCLs) ensuring thermodynamic control over the system. If more than one reversible reaction operates in a single dynamic combinatorial library, the complexity of the system increases dramatically, and so does its possible applications. One can imagine two reversible reactions that operate simultaneously or two reversible reactions that operate independently. Both these scenarios have advantages and disadvantages. In this contribution, we show how disulfide exchange and boronic ester transesterification can function simultaneous in dynamic combinatorial libraries under appropriate conditions. We describe the detailed studies necessary to establish suitable reaction conditions and highlight the analytical techniques appropriate to study this type of system.
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46
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Zhang KD, Matile S. Complex Functional Systems with Three Different Types of Dynamic Covalent Bonds. Angew Chem Int Ed Engl 2015; 54:8980-3. [DOI: 10.1002/anie.201503033] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2015] [Revised: 05/01/2015] [Indexed: 01/01/2023]
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47
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Zhang KD, Matile S. Complex Functional Systems with Three Different Types of Dynamic Covalent Bonds. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201503033] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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48
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Schaufelberger F, Hu L, Ramström O. trans-Symmetric Dynamic Covalent Systems: Connected Transamination and Transimination Reactions. Chemistry 2015; 21:9776-83. [PMID: 26044061 PMCID: PMC4517097 DOI: 10.1002/chem.201500520] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2015] [Indexed: 11/08/2022]
Abstract
The development of chemical transaminations as a new type of dynamic covalent reaction is described. The key 1,3-proton shift is under complete catalytic control and can be conducted orthogonally to, or simultaneous with, transimination in the presence of an amine to rapidly yield two-dimensional dynamic systems with a high degree of complexity evolution. The transamination-transimination systems are proven to be fully reversible, stable over several days, compatible with a range of functional groups, and highly tunable. Kinetic studies show transamination to be the rate-limiting reaction in the network. Furthermore, it was discovered that readily available quinuclidine is a highly potent catalyst for aldimine transaminations. This study demonstrates how connected dynamic reactions give rise to significantly larger systems than the unconnected counterparts, and shows how reversible isomerizations can be utilized as an effective diversity-generating element.
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Affiliation(s)
- Fredrik Schaufelberger
- Department of Chemistry, KTH - Royal Institute of Technology, Teknikringen 30, 10044 Stockholm (Sweden)
| | - Lei Hu
- Department of Chemistry, KTH - Royal Institute of Technology, Teknikringen 30, 10044 Stockholm (Sweden)
| | - Olof Ramström
- Department of Chemistry, KTH - Royal Institute of Technology, Teknikringen 30, 10044 Stockholm (Sweden).
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49
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McConnell AJ, Wood CS, Neelakandan PP, Nitschke JR. Stimuli-Responsive Metal–Ligand Assemblies. Chem Rev 2015; 115:7729-93. [DOI: 10.1021/cr500632f] [Citation(s) in RCA: 759] [Impact Index Per Article: 84.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Anna J. McConnell
- Department of Chemistry, University of Cambridge, Lensfield
Road, Cambridge CB2 1EW, United Kingdom
| | - Christopher S. Wood
- Department of Chemistry, University of Cambridge, Lensfield
Road, Cambridge CB2 1EW, United Kingdom
| | - Prakash P. Neelakandan
- Department of Chemistry, University of Cambridge, Lensfield
Road, Cambridge CB2 1EW, United Kingdom
| | - Jonathan R. Nitschke
- Department of Chemistry, University of Cambridge, Lensfield
Road, Cambridge CB2 1EW, United Kingdom
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50
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Black SP, Sanders JKM, Stefankiewicz AR. Disulfide exchange: exposing supramolecular reactivity through dynamic covalent chemistry. Chem Soc Rev 2014; 43:1861-72. [PMID: 24132207 DOI: 10.1039/c3cs60326a] [Citation(s) in RCA: 257] [Impact Index Per Article: 25.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
A Tutorial Review of the subtle supramolecular interactions influencing the outcomes of equilibrating systems, focusing on the dynamic covalent chemistry (DCC) of disulfide exchange reactions, is presented. We discuss the topics of cation-π interactions (2.1), hydrophobic effects (2.2), hydrogen bonding interactions (2.3) aromatic donor-acceptor interactions (2.4), and metal-ligand interactions (2.5) in the context of dynamic disulfide chemistry.
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Affiliation(s)
- Samuel P Black
- University Chemical Laboratory, University of Cambridge, Lensfield Road, Cambridge, UKCB21EW
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