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Marić I, Yang L, Li X, Santiago GM, Pappas CG, Qiu X, Dijksman JA, Mikhailov K, van Rijn P, Otto S. Tailorable and Biocompatible Supramolecular-Based Hydrogels Featuring two Dynamic Covalent Chemistries. Angew Chem Int Ed Engl 2023; 62:e202216475. [PMID: 36744522 DOI: 10.1002/anie.202216475] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 01/17/2023] [Accepted: 02/01/2023] [Indexed: 02/07/2023]
Abstract
Dynamic covalent chemistry (DCC) has proven to be a valuable tool in creating fascinating molecules, structures, and emergent properties in fully synthetic systems. Here we report a system that uses two dynamic covalent bonds in tandem, namely disulfides and hydrazones, for the formation of hydrogels containing biologically relevant ligands. The reversibility of disulfide bonds allows fiber formation upon oxidation of dithiol-peptide building block, while the reaction between NH-NH2 functionalized C-terminus and aldehyde cross-linkers results in a gel. The same bond-forming reaction was exploited for the "decoration" of the supramolecular assemblies by cell-adhesion-promoting sequences (RGD and LDV). Fast triggered gelation, cytocompatibility and ability to "on-demand" chemically customize fibrillar scaffold offer potential for applying these systems as a bioactive platform for cell culture and tissue engineering.
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Affiliation(s)
- Ivana Marić
- Stratingh Institute, Centre for Systems Chemistry, University of Groningen, Nijenborgh 4, 9747 AG, Groningen (The, Netherlands
- Dutch Polymer Institute, P. O. Box 902, 5600 AX, Eindhoven (The, Netherlands
| | - Liangliang Yang
- University Medical Center Groningen, Department of Biomedical Engineering-FB40 and W. J. Kolff Institute for Biomedical Engineering and Materials Science-FB41, University of Groningen, A. Deusinglaan 1, 9713 AV, Groningen (The, Netherlands
| | - Xiufeng Li
- Physical Chemistry and Soft Matter, Wageningen University, Stippeneng 4, 6708 WE, Wageningen (The, Netherlands
| | - Guillermo Monreal Santiago
- Stratingh Institute, Centre for Systems Chemistry, University of Groningen, Nijenborgh 4, 9747 AG, Groningen (The, Netherlands
| | - Charalampos G Pappas
- Stratingh Institute, Centre for Systems Chemistry, University of Groningen, Nijenborgh 4, 9747 AG, Groningen (The, Netherlands
| | - Xinkai Qiu
- Stratingh Institute and Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands
| | - Joshua A Dijksman
- Physical Chemistry and Soft Matter, Wageningen University, Stippeneng 4, 6708 WE, Wageningen (The, Netherlands
| | - Kirill Mikhailov
- Stratingh Institute, Centre for Systems Chemistry, University of Groningen, Nijenborgh 4, 9747 AG, Groningen (The, Netherlands
| | - Patrick van Rijn
- University Medical Center Groningen, Department of Biomedical Engineering-FB40 and W. J. Kolff Institute for Biomedical Engineering and Materials Science-FB41, University of Groningen, A. Deusinglaan 1, 9713 AV, Groningen (The, Netherlands
| | - Sijbren Otto
- Stratingh Institute, Centre for Systems Chemistry, University of Groningen, Nijenborgh 4, 9747 AG, Groningen (The, Netherlands
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2
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Wang C, O'Hagan MP, Willner B, Willner I. Bioinspired Artificial Photosynthetic Systems. Chemistry 2021; 28:e202103595. [PMID: 34854505 DOI: 10.1002/chem.202103595] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Indexed: 12/18/2022]
Abstract
Mimicking photosynthesis using artificial systems, as a means for solar energy conversion and green fuel generation, is one of the holy grails of modern science. This perspective presents recent advances towards developing artificial photosynthetic systems. In one approach, native photosystems are interfaced with electrodes to yield photobioelectrochemical cells that transform light energy into electrical power. This is exemplified by interfacing photosystem I (PSI) and photosystem II (PSII) as an electrically contacted assembly mimicking the native Z-scheme, and by the assembly of an electrically wired PSI/glucose oxidase biocatalytic conjugate on an electrode support. Illumination of the functionalized electrodes led to light-induced generation of electrical power, or to the generation of photocurrents using glucose as the fuel. The second approach introduces supramolecular photosensitizer nucleic acid/electron acceptor complexes as functional modules for effective photoinduced electron transfer stimulating the subsequent biocatalyzed generation of NADPH or the Pt-nanoparticle-catalyzed evolution of molecular hydrogen. Application of the DNA machineries for scaling-up the photosystems is demonstrated. A third approach presents the integration of artificial photosynthetic modules into dynamic nucleic acid networks undergoing reversible reconfiguration or dissipative transient operation in the presence of auxiliary triggers. Control over photoinduced electron transfer reactions and photosynthetic transformations by means of the dynamic networks is demonstrated.
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Affiliation(s)
- Chen Wang
- Institute of Chemistry, The Minerva Centre for Bio-Hybrid Complex Systems, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Michael P O'Hagan
- Institute of Chemistry, The Minerva Centre for Bio-Hybrid Complex Systems, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Bilha Willner
- Institute of Chemistry, The Minerva Centre for Bio-Hybrid Complex Systems, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Itamar Willner
- Institute of Chemistry, The Minerva Centre for Bio-Hybrid Complex Systems, The Hebrew University of Jerusalem, Jerusalem, Israel
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3
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Lutz E, Moulin E, Tchakalova V, Benczédi D, Herrmann A, Giuseppone N. Design of Stimuli-Responsive Dynamic Covalent Delivery Systems for Volatile Compounds (Part 1): Controlled Hydrolysis of Micellar Amphiphilic Imines in Water. Chemistry 2021; 27:13457-13467. [PMID: 34270124 DOI: 10.1002/chem.202102049] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Indexed: 12/29/2022]
Abstract
Despite their intrinsic hydrolysable character, imine bonds can become remarkably stable in water when self-assembled in amphiphilic micellar structures. In this work, we systematically studied some of these structures and the influence of various parameters that can be used to take control of their hydrolysis, including pH, concentration, the position of the imine function in the amphiphilic structure, relative lengths of the linked hydrophilic and hydrophobic moieties. Thermodynamic and kinetic data led us to the rational design of stable imines in water, partly based on the location of the imine function within the hydrophobic part of the amphiphile and on a predictable quantitative term that we define as the total hydrophilic-lipophilic balance (HLB). In addition, we show that such stable systems are also stimuli-responsive and therefore, of potential interest in trapping and releasing micellar components on demand.
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Affiliation(s)
- Eric Lutz
- SAMS Research Group, Institut Charles Sadron, CNRS, University of Strasbourg, 23 rue du Loess, BP 84047, 67034, Strasbourg Cedex 2, France
| | - Emilie Moulin
- SAMS Research Group, Institut Charles Sadron, CNRS, University of Strasbourg, 23 rue du Loess, BP 84047, 67034, Strasbourg Cedex 2, France
| | - Vera Tchakalova
- Firmenich SA, Corporate R&D Division, Rue de la Bergère 7, 1242, Satigny, Switzerland
| | - Daniel Benczédi
- Firmenich SA, Corporate R&D Division, Rue de la Bergère 7, 1242, Satigny, Switzerland
| | - Andreas Herrmann
- Firmenich SA, Corporate R&D Division, Rue de la Bergère 7, 1242, Satigny, Switzerland
| | - Nicolas Giuseppone
- SAMS Research Group, Institut Charles Sadron, CNRS, University of Strasbourg, 23 rue du Loess, BP 84047, 67034, Strasbourg Cedex 2, France
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4
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Yue L, Wulf V, Wang S, Willner I. Evolution of Nucleic‐Acid‐Based Constitutional Dynamic Networks Revealing Adaptive and Emergent Functions. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201905235] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Liang Yue
- Institute of ChemistryThe Center for Nanoscience and NanotechnologyThe Hebrew University of Jerusalem Jerusalem 91904 Israel
| | - Verena Wulf
- Institute of ChemistryThe Center for Nanoscience and NanotechnologyThe Hebrew University of Jerusalem Jerusalem 91904 Israel
| | - Shan Wang
- Institute of ChemistryThe Center for Nanoscience and NanotechnologyThe Hebrew University of Jerusalem Jerusalem 91904 Israel
| | - Itamar Willner
- Institute of ChemistryThe Center for Nanoscience and NanotechnologyThe Hebrew University of Jerusalem Jerusalem 91904 Israel
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5
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Yue L, Wulf V, Wang S, Willner I. Evolution of Nucleic-Acid-Based Constitutional Dynamic Networks Revealing Adaptive and Emergent Functions. Angew Chem Int Ed Engl 2019; 58:12238-12245. [PMID: 31243855 DOI: 10.1002/anie.201905235] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2019] [Indexed: 12/12/2022]
Abstract
The evolution of networks is a fundamental unresolved issue in developing the area of systems chemistry. We introduce a versatile rewiring mechanism that leads to the emergence of nucleic-acid-based constitutional dynamic networks (CDNs). A two-component constituent AA' functionalized with a Mg2+ -ion-dependent DNAzyme activator unit forms a complex with an intact hairpin HBB' composed of B and B' sequences. Cleavage of HBB' leads to the two-component constituent BB', and its rewiring with AA' yields CDN X composed of the equilibrated constituents AA', AB', BA', and BB'. In analogy, subjecting AA' to an intact hairpin HCC' leads to the formation of CDN Y consisting of AA', AC', CA', and CC'. Subjecting AA' to the mixture of HBB' and HCC' evolves the [3×3] CDN Z, composed of nine constituents, thus demonstrating hierarchical adaptive properties. Furthermore, the DNAzyme units associated with the constituents are applied to tailor emerging catalytic functions from the different CDNs.
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Affiliation(s)
- Liang Yue
- Institute of Chemistry, The Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, Jerusalem, 91904, Israel
| | - Verena Wulf
- Institute of Chemistry, The Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, Jerusalem, 91904, Israel
| | - Shan Wang
- Institute of Chemistry, The Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, Jerusalem, 91904, Israel
| | - Itamar Willner
- Institute of Chemistry, The Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, Jerusalem, 91904, Israel
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6
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Nguyen R, Jouault N, Zanirati S, Rawiso M, Allouche L, Buhler E, Giuseppone N. Autopoietic Behavior of Dynamic Covalent Amphiphiles. Chemistry 2018; 24:17125-17137. [PMID: 30144185 DOI: 10.1002/chem.201803833] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Indexed: 01/06/2023]
Abstract
The condensation of aldehydes and amines in water to give amphiphilic imines can lead to a particular autocatalytic behavior known as autopoiesis, in which the closed micellar structure made by the amphiphile at the mesoscale can accelerate the condensation of its constituents. Herein, through a combination of analytical tools, including diffusion ordered spectroscopy (DOSY) as well as light, neutron, and X-ray scattering techniques, the thermodynamic and kinetic parameters were probed at both the level of dynamic covalent imine bond formation and the level of the resulting micellar self-assemblies. It was found that the autopoietic behavior was the result of a combination of several parameters, including solubilization of hydrophobic building blocks, template effect at the core-shell interface, and growth/division cycles of the micellar objects.
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Affiliation(s)
- Rémi Nguyen
- Institut Charles Sadron, CNRS, University of Strasbourg, 23 rue du Loess, BP 84047, 67034, Strasbourg Cedex 2, France
| | - Nicolas Jouault
- Matière et Systèmes Complexes (MSC) Laboratory, UMR 7057, Sorbonne Paris Cité, University of Paris Diderot-Paris VII, Bâtiment Condorcet, 10 rue Alice Domon et Léonie Duquet., 75205, Paris Cedex 13, France
- Sorbonne Université, CNRS, Laboratoire PHysicochimie des, Electrolytes et des Nanosytèmes InterfaciauX, PHENIX, 75005, Paris, France
| | - Stefano Zanirati
- Institut Charles Sadron, CNRS, University of Strasbourg, 23 rue du Loess, BP 84047, 67034, Strasbourg Cedex 2, France
| | - Michel Rawiso
- Institut Charles Sadron, CNRS, University of Strasbourg, 23 rue du Loess, BP 84047, 67034, Strasbourg Cedex 2, France
| | - Lionel Allouche
- Institut de Chimie, Service de RMN, Université Louis Pasteur, 1 rue Blaise Pascal, 67008, Strasbourg Cedex, France
| | - Eric Buhler
- Matière et Systèmes Complexes (MSC) Laboratory, UMR 7057, Sorbonne Paris Cité, University of Paris Diderot-Paris VII, Bâtiment Condorcet, 10 rue Alice Domon et Léonie Duquet., 75205, Paris Cedex 13, France
| | - Nicolas Giuseppone
- Institut Charles Sadron, CNRS, University of Strasbourg, 23 rue du Loess, BP 84047, 67034, Strasbourg Cedex 2, France
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7
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Wang S, Yue L, Li Z, Zhang J, Tian H, Willner I. Light‐Induced Reversible Reconfiguration of DNA‐Based Constitutional Dynamic Networks: Application to Switchable Catalysis. Angew Chem Int Ed Engl 2018; 57:8105-8109. [DOI: 10.1002/anie.201803371] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Indexed: 12/18/2022]
Affiliation(s)
- Shan Wang
- Institute of ChemistryThe Center for Nanoscience and NanotechnologyThe Hebrew University of Jerusalem Jerusalem 91904 Israel
| | - Liang Yue
- Institute of ChemistryThe Center for Nanoscience and NanotechnologyThe Hebrew University of Jerusalem Jerusalem 91904 Israel
| | - Zi‐Yuan Li
- Key Laboratory for Advanced MaterialsSchool of Chemistry and Molecular EngineeringEast China University of Science and Technology Shanghai China
| | - Junji Zhang
- Key Laboratory for Advanced MaterialsSchool of Chemistry and Molecular EngineeringEast China University of Science and Technology Shanghai China
| | - He Tian
- Key Laboratory for Advanced MaterialsSchool of Chemistry and Molecular EngineeringEast China University of Science and Technology Shanghai China
| | - Itamar Willner
- Institute of ChemistryThe Center for Nanoscience and NanotechnologyThe Hebrew University of Jerusalem Jerusalem 91904 Israel
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8
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Wang S, Yue L, Li Z, Zhang J, Tian H, Willner I. Light‐Induced Reversible Reconfiguration of DNA‐Based Constitutional Dynamic Networks: Application to Switchable Catalysis. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201803371] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Shan Wang
- Institute of ChemistryThe Center for Nanoscience and NanotechnologyThe Hebrew University of Jerusalem Jerusalem 91904 Israel
| | - Liang Yue
- Institute of ChemistryThe Center for Nanoscience and NanotechnologyThe Hebrew University of Jerusalem Jerusalem 91904 Israel
| | - Zi‐Yuan Li
- Key Laboratory for Advanced MaterialsSchool of Chemistry and Molecular EngineeringEast China University of Science and Technology Shanghai China
| | - Junji Zhang
- Key Laboratory for Advanced MaterialsSchool of Chemistry and Molecular EngineeringEast China University of Science and Technology Shanghai China
| | - He Tian
- Key Laboratory for Advanced MaterialsSchool of Chemistry and Molecular EngineeringEast China University of Science and Technology Shanghai China
| | - Itamar Willner
- Institute of ChemistryThe Center for Nanoscience and NanotechnologyThe Hebrew University of Jerusalem Jerusalem 91904 Israel
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9
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Zhang M, Zhang F, Xu H, Su Z. The regulation of hydroboration of olefins by oriented external electric field. NEW J CHEM 2018. [DOI: 10.1039/c8nj04720k] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
By employing an oriented external electric field as a catalyst or inhibitor, the model reactions of the hydroboration of terminal olefins with the simplest borane were studied for the first time.
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Affiliation(s)
- Mingxia Zhang
- Institute of Functional Material Chemistry
- Department of Chemistry
- National & Local United Engineering Lab for Power Battery
- Northeast Normal University
- Changchun 130024
| | - Fengyi Zhang
- Institute of Functional Material Chemistry
- Department of Chemistry
- National & Local United Engineering Lab for Power Battery
- Northeast Normal University
- Changchun 130024
| | - Hongliang Xu
- Institute of Functional Material Chemistry
- Department of Chemistry
- National & Local United Engineering Lab for Power Battery
- Northeast Normal University
- Changchun 130024
| | - Zhongmin Su
- Institute of Functional Material Chemistry
- Department of Chemistry
- National & Local United Engineering Lab for Power Battery
- Northeast Normal University
- Changchun 130024
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10
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Lehn JM. Perspectives in chemistry--aspects of adaptive chemistry and materials. Angew Chem Int Ed Engl 2015; 54:3276-89. [PMID: 25582911 DOI: 10.1002/anie.201409399] [Citation(s) in RCA: 333] [Impact Index Per Article: 37.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2014] [Indexed: 12/11/2022]
Abstract
Chemistry, pure and applied, is a science and an industry. By its power over the expressions of matter, it also displays the creativity of art. It has expanded from molecular to supramolecular chemistry and then, by way of constitutional dynamic chemistry, towards adaptive chemistry. Constitutional dynamics allow for adaptation, through component exchange and selection in response to physical stimuli (e.g. light, photoselection), to chemical effectors (e.g. metal ions, metalloselection) or to environmental effects (e.g. phase change) in equilibrium or out-of-equilibrium conditions, towards the generation of the best-adapted/fittest constituent(s) in a dynamic set. Such dynamic systems can be represented by two-dimensional or three-dimensional dynamic networks that define the agonistic and antagonistic relationships between the different constituents linked through component exchange. The introduction of constitutional dynamics into materials science opens perspectives towards adaptive materials and technologies, presenting attractive behavioral features (such as self-healing). In particular, dynamic polymers may undergo modification of their properties (mechanical, optical, etc.) through component exchange and recombination in response to physical or chemical agents. Constitutional adaptive materials open towards a systems materials science and offer numerous opportunities for soft-matter technologies.
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Affiliation(s)
- Jean-Marie Lehn
- ISIS, Institut de Science et d'Ingénierie Supramoléculaires, 8, allée Gaspard Monge 67000 Strasbourg (France).
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11
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Lehn JM. Perspektiven der Chemie - Aspekte adaptiver Chemie und adaptiver Materialien. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201409399] [Citation(s) in RCA: 88] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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12
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Herrmann A. Dynamic Mixtures: Challenges and Opportunities for the Amplification and Sensing of Scents. Chemistry 2012; 18:8568-77. [DOI: 10.1002/chem.201200668] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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13
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Capela MDF, Mosey NJ, Xing L, Wang R, Petitjean A. Amine Exchange in Formamidines: An Experimental and Theoretical Study. Chemistry 2011; 17:4598-612. [DOI: 10.1002/chem.201002389] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2010] [Indexed: 11/05/2022]
Affiliation(s)
- Marinha dF. Capela
- Department of Chemistry, Queen's University, 90 Bader Lane, Kingston, ON K7 L 3N6 (Canada), Fax: (+1) 613‐533‐6669
| | - Nicholas J. Mosey
- Department of Chemistry, Queen's University, 90 Bader Lane, Kingston, ON K7 L 3N6 (Canada), Fax: (+1) 613‐533‐6669
| | - Liyan Xing
- Department of Chemistry, Queen's University, 90 Bader Lane, Kingston, ON K7 L 3N6 (Canada), Fax: (+1) 613‐533‐6669
| | - Ruiyao Wang
- Department of Chemistry, Queen's University, 90 Bader Lane, Kingston, ON K7 L 3N6 (Canada), Fax: (+1) 613‐533‐6669
| | - Anne Petitjean
- Department of Chemistry, Queen's University, 90 Bader Lane, Kingston, ON K7 L 3N6 (Canada), Fax: (+1) 613‐533‐6669
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Lao L, Schmitt JL, Lehn JM. Evolution of a Constitutional Dynamic Library Driven by Self-Organisation of a Helically Folded Molecular Strand. Chemistry 2010; 16:4903-10. [DOI: 10.1002/chem.200903437] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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15
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Meir R, Chen H, Lai W, Shaik S. Oriented Electric Fields Accelerate DielsâAlder Reactions and Control theendo/exoSelectivity. Chemphyschem 2010; 11:301-10. [DOI: 10.1002/cphc.200900848] [Citation(s) in RCA: 142] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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16
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Reutenauer P, Buhler E, Boul PJ, Candau SJ, Lehn JM. Room temperature dynamic polymers based on Diels-Alder chemistry. Chemistry 2009; 15:1893-900. [PMID: 19132706 DOI: 10.1002/chem.200802145] [Citation(s) in RCA: 187] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Dynamers based on reversible Diels-Alder chemistry have been obtained and shown to undergo dynamic exchange at room temperature. Their study in solution by small-angle neutron scattering indicated the formation of long and highly flexible chains. Polydispersed molecules gave T(g) values below room temperature, permitting the generation of a dynamic elastomer upon introduction of a dynamic cross-linking agent. The use of a system with a low equilibrium constant gives access to materials with interesting self-healing properties.
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Affiliation(s)
- P Reutenauer
- Laboratoire de Chimie Supramoléculaire, ISIS, Université de Strasbourg, 8 allée Gaspard Monge, 67000 Strasbourg, France
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Herrmann A, Giuseppone N, Lehn JM. Electric-Field Triggered Controlled Release of Bioactive Volatiles from Imine-Based Liquid Crystalline Phases. Chemistry 2009; 15:117-24. [DOI: 10.1002/chem.200801782] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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18
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Ulrich S, Lehn JM. Reversible Switching between Macrocyclic and Polymeric States by Morphological Control in a Constitutional Dynamic System. Angew Chem Int Ed Engl 2008. [DOI: 10.1002/ange.200704946] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Giuseppone N, Schmitt JL, Allouche L, Lehn JM. DOSY NMR Experiments as a Tool for the Analysis of Constitutional and Motional Dynamic Processes: Implementation for the Driven Evolution of Dynamic Combinatorial Libraries of Helical Strands. Angew Chem Int Ed Engl 2008. [DOI: 10.1002/ange.200703168] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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20
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Giuseppone N, Schmitt JL, Allouche L, Lehn JM. DOSY NMR Experiments as a Tool for the Analysis of Constitutional and Motional Dynamic Processes: Implementation for the Driven Evolution of Dynamic Combinatorial Libraries of Helical Strands. Angew Chem Int Ed Engl 2008; 47:2235-9. [DOI: 10.1002/anie.200703168] [Citation(s) in RCA: 73] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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21
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Ulrich S, Lehn JM. Reversible Switching between Macrocyclic and Polymeric States by Morphological Control in a Constitutional Dynamic System. Angew Chem Int Ed Engl 2008; 47:2240-3. [DOI: 10.1002/anie.200704946] [Citation(s) in RCA: 66] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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22
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Schultz D, Nitschke JR. Kinetic and Thermodynamic Selectivity in Subcomponent Substitution. Chemistry 2007; 13:3660-5. [PMID: 17245791 DOI: 10.1002/chem.200601693] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Within assemblies prepared by metal-templated imine condensation, one amine residue (subcomponent) may be replaced with another through substitution reactions. Proton transfer from a more to a less acidic amine may be used as the driving force for substitution. Herein, we detail the development of a set of selectivity rules to predict the outcome of subcomponent substitution reactions when several different substrates are present. When both iron and copper complexes were present, substitution occurred preferentially at imines bound to copper. This preference was kinetic in nature in the absence of a chelating amine subcomponent: The different amine residues were found to scramble between the copper and iron complexes following an initial clean substitution at the copper-bound imine. When both chelating and nonchelating amine subcomponents were present, the preference became thermodynamic in nature. Only the nonchelating amine was substituted and no evidence of scrambling was found after the reaction mixture was heated to 50 degrees C for several days. This thermodynamic selectivity, based on the chelate effect, operated in mixtures of Cu(I) and Fe(II) complexes, and in systems containing only Fe(II) complexes.
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Affiliation(s)
- David Schultz
- Department of Organic Chemistry, University of Geneva, 30 Quai Ernest-Ansermet, 1211 Genève 4, Switzerland
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Supramolecular Chemistry: J.-M. Lehn honored / Organic Chemistry: D. Leigh and M. Shibasaki Receive Prizes. Angew Chem Int Ed Engl 2007. [DOI: 10.1002/anie.200701205] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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24
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Supramolekulare Chemie: J.-M. Lehn geehrt / Organische Chemie: D. Leigh erhält Preis / Organische Chemie: Preise für M. Shibasaki. Angew Chem Int Ed Engl 2007. [DOI: 10.1002/ange.200701205] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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25
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Bilgin-Eran B, Yörür Ç, Tschierske C, Prehm M, Baumeister U. Liquid crystals based on semiperfluorinated imines and salicylaldimato metal complexes. A comparative study of alkyl, alkoxy and polyether substituents. ACTA ACUST UNITED AC 2007. [DOI: 10.1039/b618403k] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Giuseppone N, Schmitt JL, Lehn JM. Driven Evolution of a Constitutional Dynamic Library of Molecular Helices Toward the Selective Generation of [2 × 2] Gridlike Arrays under the Pressure of Metal Ion Coordination. J Am Chem Soc 2006; 128:16748-63. [PMID: 17177425 DOI: 10.1021/ja0666452] [Citation(s) in RCA: 80] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Constitutional dynamics, self-assembly, and helical-folding control are brought together in the efficient Sc(OTf)3/microwave-catalyzed transimination of helical oligohydrazone strands, yielding highly diverse dynamic libraries of interconverting constituents through assembly, dissociation, and exchange of components. The transimination-type mechanism of the ScIII-promoted exchange, as well as its regioselectivity, occurring only at the extremities of the helical strands, allow one to perform directional terminal polymerization/depolymerization processes when starting with dissymmetric strands. A particular library is subsequently brought to express quantitatively [2 x 2] gridlike metallosupramolecular arrays in the presence of ZnII ions by component recombination generating the correct ligand from the dynamic set of interconverting strands. This behavior represents a process of driven evolution of a constitutional dynamic chemical system under the pressure (coordination interaction) of an external effector (metal ions).
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Affiliation(s)
- Nicolas Giuseppone
- Laboratoire de Chimie Supramoléculaire, Institut de Science et d'Ingénierie Supramoléculaires, Université Louis Pasteur, 8 Allée Gaspard Monge, BP 70028, 67083 Strasbourg Cedex, France
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