1
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Vleugels MEJ, Bosman R, da Camino Soligo PH, Wijker S, Fehér B, Spiering AJH, Rijns L, Bellan R, Dankers PYW, Palmans ARA. Bisurea-Based Supramolecular Polymers for Tunable Biomaterials. Chemistry 2024; 30:e202303361. [PMID: 38032693 DOI: 10.1002/chem.202303361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Revised: 11/29/2023] [Accepted: 11/30/2023] [Indexed: 12/01/2023]
Abstract
Water-soluble supramolecular polymers show great potential to develop dynamic biomaterials with tailored properties. Here, we elucidate the morphology, stability and dynamicity of supramolecular polymers derived from bisurea-based monomers. An accessible synthetic approach from 2,4-toluene diisocyanate (TDI) as the starting material is developed. TDI has two isocyanates that differ in intrinsic reactivity, which allows to obtain functional, desymmetrized monomers in a one-step procedure. We explore how the hydrophobic/hydrophilic ratio affects the properties of the formed supramolecular polymers by increasing the number of methylene units from 10 to 12 keeping the hydrophilic hexa(ethylene glycol) constant. All bisurea-based monomers form long, fibrous structures with 3-5 monomers in the cross-section in water, indicating a proper hydrophobic\hydrophilic balance. The stability of the supramolecular polymers increases with an increasing amount of methylene units, whereas the dynamic nature of the monomers decreases. The introduction of one Cy3 dye affords modified supramolecular monomers, which co-assemble with the unmodified monomers into fibrous structures. All systems show excellent water-compatibility and no toxicity for different cell-lines. Importantly, in cell culture media, the fibrous structures remain present, highlighting the stability of these supramolecular polymers in physiological conditions. The results obtained here motivate further investigation of these bisurea-based building blocks as dynamic biomaterial.
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Affiliation(s)
- Marle E J Vleugels
- Laboratory of Macromolecular and Organic Chemistry, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, Eindhoven, The Netherlands
- Institute for Complex Molecular Systems, Eindhoven University of Technology, Eindhoven, The Netherlands
| | - Rik Bosman
- Laboratory of Macromolecular and Organic Chemistry, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, Eindhoven, The Netherlands
- Institute for Complex Molecular Systems, Eindhoven University of Technology, Eindhoven, The Netherlands
| | - Piers H da Camino Soligo
- Laboratory of Macromolecular and Organic Chemistry, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, Eindhoven, The Netherlands
- Institute for Complex Molecular Systems, Eindhoven University of Technology, Eindhoven, The Netherlands
| | - Stefan Wijker
- Laboratory of Macromolecular and Organic Chemistry, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, Eindhoven, The Netherlands
- Institute for Complex Molecular Systems, Eindhoven University of Technology, Eindhoven, The Netherlands
| | - Bence Fehér
- Laboratory of Self-Organizing Soft Matter, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, Eindhoven, The Netherlands
- Institute for Complex Molecular Systems, Eindhoven University of Technology, Eindhoven, The Netherlands
| | - A J H Spiering
- Laboratory of Macromolecular and Organic Chemistry, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, Eindhoven, The Netherlands
- Laboratory of Self-Organizing Soft Matter, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, Eindhoven, The Netherlands
- Institute for Complex Molecular Systems, Eindhoven University of Technology, Eindhoven, The Netherlands
| | - Laura Rijns
- Laboratory of Chemical Biology, Department of Biomedical Engineering, Eindhoven University of Technology, Eindhoven, The Netherlands
- Institute for Complex Molecular Systems, Eindhoven University of Technology, Eindhoven, The Netherlands
| | - Riccardo Bellan
- Laboratory of Chemical Biology, Department of Biomedical Engineering, Eindhoven University of Technology, Eindhoven, The Netherlands
- Institute for Complex Molecular Systems, Eindhoven University of Technology, Eindhoven, The Netherlands
| | - Patricia Y W Dankers
- Laboratory of Chemical Biology, Department of Biomedical Engineering, Eindhoven University of Technology, Eindhoven, The Netherlands
- Institute for Complex Molecular Systems, Eindhoven University of Technology, Eindhoven, The Netherlands
| | - Anja R A Palmans
- Laboratory of Macromolecular and Organic Chemistry, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, Eindhoven, The Netherlands
- Institute for Complex Molecular Systems, Eindhoven University of Technology, Eindhoven, The Netherlands
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2
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Li Z, Zeman CJ, Valandro S, Bantang JPO, Schanze KS. Phosphates Induced H-Type or J-Type Aggregation of Cationic Porphyrins with Varied Side Chains. Molecules 2023; 28:4115. [PMID: 37241856 PMCID: PMC10223173 DOI: 10.3390/molecules28104115] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Revised: 05/07/2023] [Accepted: 05/09/2023] [Indexed: 05/28/2023] Open
Abstract
Non-covalent interactions have been extensively used to fabricate nanoscale architectures in supramolecular chemistry. However, the biomimetic self-assembly of diverse nanostructures in aqueous solution with reversibility induced by different important biomolecules remains a challenge. Here, we report the synthesis and aqueous self-assembly of two chiral cationic porphyrins substituted with different types of side chains (branched or linear). Helical H-aggregates are induced by pyrophosphate (PPi) as indicated by circular dichroism (CD) measurement, while J-aggregates are formed with adenosine triphosphate (ATP) for the two porphyrins. By modifying the peripheral side chains from linear to a branched structure, more pronounced H- or J-type aggregation was promoted through the interactions between cationic porphyrins and the biological phosphate ions. Moreover, the phosphate-induced self-assembly of the cationic porphyrins is reversible in the presence of the enzyme alkaline phosphatase (ALP) and repeated addition of phosphates.
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Affiliation(s)
- Zhiliang Li
- Department of Chemistry, University of Texas at San Antonio, San Antonio, TX 78249, USA; (Z.L.); (C.J.Z.IV); (S.V.); (J.P.O.B.)
- Department of Chemistry, University of Florida, Gainesville, FL 32611, USA
| | - Charles J. Zeman
- Department of Chemistry, University of Texas at San Antonio, San Antonio, TX 78249, USA; (Z.L.); (C.J.Z.IV); (S.V.); (J.P.O.B.)
- Department of Chemistry, University of Florida, Gainesville, FL 32611, USA
| | - Silvano Valandro
- Department of Chemistry, University of Texas at San Antonio, San Antonio, TX 78249, USA; (Z.L.); (C.J.Z.IV); (S.V.); (J.P.O.B.)
| | - Jose Paolo O. Bantang
- Department of Chemistry, University of Texas at San Antonio, San Antonio, TX 78249, USA; (Z.L.); (C.J.Z.IV); (S.V.); (J.P.O.B.)
| | - Kirk S. Schanze
- Department of Chemistry, University of Texas at San Antonio, San Antonio, TX 78249, USA; (Z.L.); (C.J.Z.IV); (S.V.); (J.P.O.B.)
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3
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Montero-Campillo MM, Mó O, Alkorta I, Elguero J, Yáñez M. Disrupting bonding in azoles through beryllium bonds: Unexpected coordination patterns and acidity enhancement. J Chem Phys 2022; 156:194303. [PMID: 35597641 DOI: 10.1063/5.0089716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Although triazoles and tetrazole are amphoteric and may behave as weak acids, the latter property can be hugely enhanced by beryllium bonds. To explain this phenomenon, the structure and bonding characteristics of the complexes between triazoles and tetrazoles with one and two molecules of BeF2 have been investigated through the use of high-level G4 ab initio calculations. The formation of the complexes between the N basic sites of the azoles and the Be center of the BeF2 molecule and the (BeF2)2 dimer leads to a significant bonding perturbation of both interacting subunits. The main consequence of these electron density rearrangements is the above-mentioned increase in the intrinsic acidity of the azole subunit, evolving from a typical nitrogen base to a very strong nitrogenous acid. This effect is particularly dramatic when the interaction involves the (BeF2)2 dimer, that is, a Lewis acid much stronger than the monomer. Although the azoles investigated have neighboring N-basic sites, their interaction with the (BeF2)2 dimer yields a monodentate complex. However, the deprotonated species becomes extra-stabilized because a second N-Be bond is formed, leading to a new five-membered ring, with the result that the azole-(BeF2)2 complexes investigated become stronger nitrogenous acids than oxyacids such as perchloric acid.
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Affiliation(s)
- M Merced Montero-Campillo
- Departamento de Química, Módulo 13, Facultad de Ciencias and Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, Madrid 28049, Spain
| | - Otilia Mó
- Departamento de Química, Módulo 13, Facultad de Ciencias and Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, Madrid 28049, Spain
| | - Ibon Alkorta
- Instituto de Química Médica (CSIC), Juan de la Cierva, 3, E-28006 Madrid, Spain
| | - José Elguero
- Instituto de Química Médica (CSIC), Juan de la Cierva, 3, E-28006 Madrid, Spain
| | - Manuel Yáñez
- Departamento de Química, Módulo 13, Facultad de Ciencias and Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, Madrid 28049, Spain
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4
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Malonaldehyde-like Systems: BeF2 Clusters—A Subtle Balance between Hydrogen Bonds, Beryllium Bonds, and Resonance. SCI 2022. [DOI: 10.3390/sci4010007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The stability of malonaldehyde is governed by intramolecular hydrogen bonds (IMHBs) as well as in malonaldehyde-like systems where oxygen is replaced by N or S at any of the basic sites. As beryllium bonds have been shown to strongly cooperate with hydrogen bonds, this work explores at the high level ab initio G4 level of theory the effect of including this non-covalent interaction in the system through its association with BeF2. Although malonaldehyde follows the expected trends, where the formation of a pseudocyclic form is favored also when IMHB and Be bonds are present, the subtle balance between both non-covalent interactions leads to some surprising results when other heteroatoms are involved, to the point that interaction energies can be much larger than expected or even cyclization is not favored. A complete analysis using different computational tools gives an answer to those cases escaping the predictable trends.
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5
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Ayzac V, Dirany M, Raynal M, Isare B, Bouteiller L. Energetics of Competing Chiral Supramolecular Polymers. Chemistry 2021; 27:9627-9633. [PMID: 33871118 DOI: 10.1002/chem.202100645] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Indexed: 11/06/2022]
Abstract
Chirality can have unexpected consequences including on properties other than spectroscopic. We show herein that a racemic mixture of bis-urea stereoisomers forms thermodynamically stable supramolecular polymers that result in a more viscous solution than for the pure stereoisomer. The origin of this macroscopic property was probed by characterizing the structure and stability of the assemblies. Both racemic and non-racemic bis-urea stereoisomers form two competing helical supramolecular polymers in solution: a double and a single helical structure at low and high temperature, respectively. The transition temperature between these assemblies, as probed by spectroscopic and calorimetric analyses, is strongly influenced by the composition (by up to 70 °C). A simple model that accounts for the thermodynamics of this system, indicates that the stereochemical defects (chiral mismatches and helix reversals) affect much more the stability of single helices. Therefore, the heterochiral double helical structure predominates over the single helical structure (whilst the opposite holds for the homochiral structures), which explains the aforementioned higher viscosity of the racemic bis-urea solution. This rationale constitutes a new basis to tune the macroscopic properties of the increasing number of supramolecular polymers reported to exhibit competing chiral nanostructures.
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Affiliation(s)
- Virgile Ayzac
- CNRS, Institut Parisien de Chimie Moléculaire (IPCM), Equipe Chimie des Polymères, Sorbonne Université, 75005, Paris, France
| | - Mohammed Dirany
- CNRS, Institut Parisien de Chimie Moléculaire (IPCM), Equipe Chimie des Polymères, Sorbonne Université, 75005, Paris, France
| | - Matthieu Raynal
- CNRS, Institut Parisien de Chimie Moléculaire (IPCM), Equipe Chimie des Polymères, Sorbonne Université, 75005, Paris, France
| | - Benjamin Isare
- CNRS, Institut Parisien de Chimie Moléculaire (IPCM), Equipe Chimie des Polymères, Sorbonne Université, 75005, Paris, France
| | - Laurent Bouteiller
- CNRS, Institut Parisien de Chimie Moléculaire (IPCM), Equipe Chimie des Polymères, Sorbonne Université, 75005, Paris, France
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6
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Gui M, Han Y, Zhong H, Liao R, Wang F. Investigation of the Amide Linkages on Cooperative Supramolecular Polymerization of Organoplatinum(II) Complexes. Molecules 2021; 26:2832. [PMID: 34068830 PMCID: PMC8126204 DOI: 10.3390/molecules26092832] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 04/13/2021] [Accepted: 04/14/2021] [Indexed: 11/29/2022] Open
Abstract
Cooperative supramolecular polymerization of π-conjugated compounds into one-dimensional nanostructures has received tremendous attentions in recent years. It is commonly achieved by incorporating amide linkages into the monomeric structures, which provide hydrogen bonds for intermolecular non-covalent complexation. Herein, the effect of amide linkages is elaborately studied, by comparing supramolecular polymerization behaviors of two structurally similar monomers with the same platinum(II) acetylide cores. As compared to the N-phenyl benzamide linkages, N-[(1S)-1-phenylethyl] benzamide linkages give rise to effective chirality transfer behaviors due to the closer distances between the chiral units and the platinum(II) acetylide core. They also provide stronger intermolecular hydrogen bonding strength, which consequently brings higher thermo-stability and enhanced gelation capability for the resulting supramolecular polymers. Supramolecular polymerization is further strengthened by varying the monomers from monotopic to ditopic structures. Hence, with the judicious modulation of structural parameters, the current study opens up new avenues for the rational design of supramolecular polymeric systems.
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Affiliation(s)
| | | | | | - Rui Liao
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, China; (M.G.); (Y.H.); (H.Z.)
| | - Feng Wang
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, China; (M.G.); (Y.H.); (H.Z.)
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7
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Competition between chiral solvents and chiral monomers in the helical bias of supramolecular polymers. Nat Chem 2021; 13:200-207. [PMID: 33257888 DOI: 10.1038/s41557-020-00583-0] [Citation(s) in RCA: 64] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Accepted: 10/19/2020] [Indexed: 01/30/2023]
Abstract
Solute-solvent interactions are key for the assembly and proper functioning of biomacromolecules and play important roles in many fields of organic and polymer chemistry. Despite numerous reports describing the effects of (chiral) solvents on helical conformations of (supramolecular) polymers, the combination of chiral solvents and chiral monomers is unexplored. Here we report diastereomeric differences in the supramolecular polymerization of enantiomers of chiral triphenylene-2,6,10-tricarboxamides in chiral chlorinated solvents. Competition between the preferences induced by the stereocentres of the assembled monomers and those present in the solvent molecules results in unforeseen temperature-dependent solvation effects. By combining experiments and mathematical modelling, we show that the observed differences between enantiomers originate from the combined additive entropic effects of stereocentres present in the monomer and in the solvent. Remarkably, copolymerizations show that the chiral solvent can bias the copolymer helicity and thereby overrule the helical preference of the monomers. Our results highlight the importance of cumulative solvation effects in supramolecular polymerizations.
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8
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Mabesoone MJ, Palmans ARA, Meijer EW. Solute-Solvent Interactions in Modern Physical Organic Chemistry: Supramolecular Polymers as a Muse. J Am Chem Soc 2020; 142:19781-19798. [PMID: 33174741 PMCID: PMC7705892 DOI: 10.1021/jacs.0c09293] [Citation(s) in RCA: 72] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2020] [Indexed: 12/14/2022]
Abstract
Interactions between solvents and solutes are a cornerstone of physical organic chemistry and have been the subject of investigations over the last century. In recent years, a renewed interest in fundamental aspects of solute-solvent interactions has been sparked in the field of supramolecular chemistry in general and that of supramolecular polymers in particular. Although solvent effects in supramolecular chemistry have been recognized for a long time, the unique opportunities that supramolecular polymers offer to gain insight into solute-solvent interactions have become clear relatively recently. The multiple interactions that hold the supramolecular polymeric structure together are similar in strength to those between solute and solvent. The cooperativity found in ordered supramolecular polymers leads to the possibility of amplifying these solute-solvent effects and will shed light on extremely subtle solvation phenomena. As a result, many exciting effects of solute-solvent interactions in modern physical organic chemistry can be studied using supramolecular polymers. Our aim is to put the recent progress into a historical context and provide avenues toward a more comprehensive understanding of solvents in multicomponent supramolecular systems.
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Affiliation(s)
- Mathijs
F. J. Mabesoone
- Institute
for Complex Molecular Systems and the Laboratory of Macromolecular
and Organic Chemistry, Eindhoven University
of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Anja R. A. Palmans
- Institute
for Complex Molecular Systems and the Laboratory of Macromolecular
and Organic Chemistry, Eindhoven University
of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - E. W. Meijer
- Institute
for Complex Molecular Systems and the Laboratory of Macromolecular
and Organic Chemistry, Eindhoven University
of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
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9
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Ma X, Liang Z, Gan X, Wei G, Zhou Q. Synthesis and antitussive activity of obtucarbamate A derivatives. SYNTHETIC COMMUN 2020. [DOI: 10.1080/00397911.2020.1762093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Xiaoyun Ma
- School of Chemistry and Materials Science, Guizhou Education University, Guiyang, P. R. China
| | - Zhiyuan Liang
- School of Chemistry and Materials Science, Guizhou Education University, Guiyang, P. R. China
| | - Xiuhai Gan
- School of Chemistry and Materials Science, Guizhou Education University, Guiyang, P. R. China
| | - Gang Wei
- CSIRO Mineral Resources, Lindfield, NSW, Australia
| | - Qingdi Zhou
- School of Chemistry, The University of Sydney, Sydney, NSW, Australia
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10
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Vahdani Alviri B, Pourayoubi M, Farhadipour A, Kaur M, Jasinski JP. The synergistic co-operation of N-H...O=P hydrogen bonds and C-H...OX weak intermolecular interactions (X is =P or -C) in the (CH 3O) 2P(O)(NH-NHC 6F 5) amidophosphoester: a combined X-ray crystallographic and theoretical study. ACTA CRYSTALLOGRAPHICA SECTION C-STRUCTURAL CHEMISTRY 2019; 75:1424-1433. [PMID: 31589159 DOI: 10.1107/s2053229619011641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Accepted: 08/21/2019] [Indexed: 05/30/2023]
Abstract
The asymmetric unit of O,O'-dimethyl [(2,3,4,5,6-pentafluorophenyl)hydrazinyl]phosphonate, C8H8F5N2O3P, is composed of two symmetry-independent molecules with significant differences in the orientations of the C6F5 and OMe groups. In the crystal structure, a one-dimensional assembly is mediated from classical N-H...O hydrogen bonds, which includes R22(8), D(2) and some higher-order graph-set motifs. By also considering weak C-H...O=P and C-H...O-C intermolecular interactions, a two-dimensional network extends along the ab plane. The strengths of the hydrogen bonds were evaluated using quantum chemical calculations with the GAUSSIAN09 software package at the B3LYP/6-311G(d,p) level of theory. The LP(O) to σ*(NH) and σ*(CH) charge-transfer interactions were examined according to second-order perturbation theory in natural bond orbital (NBO) methodology. The hydrogen-bonded clusters of molecules, including N-H...O and C-H...O interactions, were constructed as input files for the calculations and the strengths of the hydrogen bonds are as follows: N-H...O [R22(8)] > N-H...O [D(2)] > C-H...O. The decomposed fingerprint plots show that the contribution portions of the F...H/H...F contacts in both molecules are the largest.
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Affiliation(s)
| | - Mehrdad Pourayoubi
- Department of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran
| | - Abolghasem Farhadipour
- Department of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran
| | - Manpreet Kaur
- Department of Chemistry, Keene State College, Keene, NH, USA
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11
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Mabesoone MFJ, Meijer EW. Counterintuitive consequences of competitive pathways in supramolecular polymerizations. JOURNAL OF POLYMER SCIENCE 2019. [DOI: 10.1002/pola.29456] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Mathijs F. J. Mabesoone
- Institute for Complex Molecular Systems and Laboratory of Macromolecular and Organic ChemistryEindhoven University of Technology P.O. Box 513, 5600 MB Eindhoven The Netherlands
| | - E. W. Meijer
- Institute for Complex Molecular Systems and Laboratory of Macromolecular and Organic ChemistryEindhoven University of Technology P.O. Box 513, 5600 MB Eindhoven The Netherlands
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12
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Zheng K, Wang H, Chow HF. Organogelating and narcissistic self-sorting behaviour of non-preorganized oligoamides. Chem Sci 2019; 10:4015-4024. [PMID: 31015942 PMCID: PMC6457331 DOI: 10.1039/c9sc00861f] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2019] [Accepted: 03/02/2019] [Indexed: 01/03/2023] Open
Abstract
Depending on the length (n) and the nature of the end group (X), structurally flexible oligoamides OAT and OATe were found to be good organogelators and their mixtures showed narcissistic self-sorting in both the xerogel and wet gel states.
Several series of structurally flexible, non-preorganized oligoamides with carboxylic acid, hydride, N-propargyl amide and N-propyl amide end groups were synthesized and characterized. They were found to be strong organogelators for aromatic solvents. Both the number and density of the amide units, and the nature of the end group were found to influence the gel strength as well as the kinetics of gel formation. Oligomers with a higher number and density of amide units were found to form stronger gels. Rather unexpectedly, a slight change of the end group could significantly affect the enthalpy and entropy of formation of the resulting self-assembly. Oligomers with the N-propargyl amide end group were found to be kinetically trapped in the melted state, which devoid them of forming crystalline zone upon cooling. On the other hand, the corresponding saturated N-propyl amide analog did not show the same effect. Upon mixing of these oligomers, narcissistic self-sorting could be observed in both the wet gel and xerogel states if (i) the difference in the number of amide units is greater than one or (ii) the amide unit densities are different. A semi-quantitative assessment of the extent of self-sorting could be achieved by constructing the corresponding phase diagram of the mixed gel systems. It is concluded that narcissistic self-sorting does not just prevail in mixtures making up of structurally different molecules, but appears to be fairly general even in mixtures of structurally similar molecular homologs.
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Affiliation(s)
- Kun Zheng
- Department of Chemistry , The Chinese University of Hong Kong , Shatin , Hong Kong .
| | - Huaizhen Wang
- Department of Chemistry , The Chinese University of Hong Kong , Shatin , Hong Kong .
| | - Hak-Fun Chow
- Department of Chemistry , The Chinese University of Hong Kong , Shatin , Hong Kong .
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13
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Mabesoone MFJ, Markvoort AJ, Banno M, Yamaguchi T, Helmich F, Naito Y, Yashima E, Palmans ARA, Meijer EW. Competing Interactions in Hierarchical Porphyrin Self-Assembly Introduce Robustness in Pathway Complexity. J Am Chem Soc 2018; 140:7810-7819. [PMID: 29886728 PMCID: PMC6026832 DOI: 10.1021/jacs.8b02388] [Citation(s) in RCA: 101] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Pathway complexity in supramolecular polymerization has recently sparked interest as a method to generate complex material behavior. The response of these systems relies on the existence of a metastable, kinetically trapped state. In this work, we show that strong switch-like behavior in supramolecular polymers can also be achieved through the introduction of competing aggregation pathways. This behavior is illustrated with the supramolecular polymerization of a porphyrin-based monomer at various concentrations, solvent compositions, and temperatures. It is found that the monomers aggregate via an isodesmic mechanism in weakly coupled J-type aggregates at intermediate solvent quality and temperature, followed by nucleated H-aggregates at lower solvent qualities and temperatures. At further increased thermodynamic driving forces, such as high concentration and low temperature, the H-aggregates can form hierarchical superhelices. Our mathematical models show that, contrary to a single-pathway polymerization, the existence of the isodesmic aggregation pathway buffers the free monomer pool and renders the nucleation of the H-aggregates insensitive to concentration changes in the limit of high concentrations. We also show that, at a given temperature or solvent quality, the thermodynamically stable aggregate morphology can be selected by controlling the remaining free external parameter. As a result, the judicious application of pathway complexity allows us to synthesize a diverse set of materials from only a single monomer. We envision that the engineering of competing pathways can increase the robustness in a wide variety of supramolecular polymer materials and lead to increasingly versatile applications.
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Affiliation(s)
- Mathijs F J Mabesoone
- Institute for Complex Molecular Systems , Eindhoven University of Technology , P.O. Box 513, 5600 MB Eindhoven , The Netherlands.,Laboratory of Macromolecular and Organic Chemistry , Eindhoven University of Technology , P.O. Box 513, 5600 MB Eindhoven , The Netherlands
| | - Albert J Markvoort
- Institute for Complex Molecular Systems , Eindhoven University of Technology , P.O. Box 513, 5600 MB Eindhoven , The Netherlands.,Computational Biology Group , Eindhoven University of Technology , P.O. Box 513, 5600 MB Eindhoven , The Netherlands
| | - Motonori Banno
- Department of Molecular Design and Engineering, Graduate School of Engineering , Nagoya University , Chikusa-ku , Nagoya 464-8603 , Japan
| | - Tomoko Yamaguchi
- Department of Molecular Design and Engineering, Graduate School of Engineering , Nagoya University , Chikusa-ku , Nagoya 464-8603 , Japan
| | - Floris Helmich
- Institute for Complex Molecular Systems , Eindhoven University of Technology , P.O. Box 513, 5600 MB Eindhoven , The Netherlands.,Laboratory of Macromolecular and Organic Chemistry , Eindhoven University of Technology , P.O. Box 513, 5600 MB Eindhoven , The Netherlands
| | - Yuki Naito
- Department of Molecular Design and Engineering, Graduate School of Engineering , Nagoya University , Chikusa-ku , Nagoya 464-8603 , Japan
| | - Eiji Yashima
- Department of Molecular Design and Engineering, Graduate School of Engineering , Nagoya University , Chikusa-ku , Nagoya 464-8603 , Japan
| | - Anja R A Palmans
- Institute for Complex Molecular Systems , Eindhoven University of Technology , P.O. Box 513, 5600 MB Eindhoven , The Netherlands.,Laboratory of Macromolecular and Organic Chemistry , Eindhoven University of Technology , P.O. Box 513, 5600 MB Eindhoven , The Netherlands
| | - E W Meijer
- Institute for Complex Molecular Systems , Eindhoven University of Technology , P.O. Box 513, 5600 MB Eindhoven , The Netherlands.,Laboratory of Macromolecular and Organic Chemistry , Eindhoven University of Technology , P.O. Box 513, 5600 MB Eindhoven , The Netherlands
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14
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Sato H, Yajima T, Yamagishi A. Stereochemical effects on dynamics in two-component systems of gelators with perfluoroalkyl and alkyl chains as revealed by vibrational circular dichroism. Phys Chem Chem Phys 2018; 20:3210-3215. [DOI: 10.1039/c7cp06264h] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The VCD method was applied to the gelation processes of chiral two-component gel systems.
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Affiliation(s)
- Hisako Sato
- Graduated School of Science and Engineering
- Ehime University
- Matsuyama
- Japan
| | - Tomoko Yajima
- Faculty of Science
- Department of Chemistry
- Ochanomizu University
- Tokyo 112-8610
- Japan
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15
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Ayzac V, Raynal M, Isare B, Idé J, Brocorens P, Lazzaroni R, Etienne T, Monari A, Assfeld X, Bouteiller L. Probing halogen-halogen interactions in solution. Phys Chem Chem Phys 2017; 19:32443-32450. [PMID: 29186230 DOI: 10.1039/c7cp06996k] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Halogen-halogen interactions are a particularly interesting class of halogen bonds that are known to be essential design elements in crystal engineering. In solution, it is likely that halogen-halogen interactions also play a role, but the weakness of this interaction makes it difficult to characterize or even simply detect. We have designed a supramolecular balance that allows detecting BrBr interactions between CBr3 groups in solution and close to room temperature. The sensitivity and versatility of the chosen platform have allowed accumulating consistent data. In halogenoalkane solvents, we propose estimates for the free energy of these weak halogen bond interactions. In toluene solutions, we show that the interactions between Br atoms and the solvent aromatic groups dominate over the BrBr interactions.
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Affiliation(s)
- V Ayzac
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, Institut Parisien de Chimie Moléculaire, Equipe Chimie des Polymères, 4 Place Jussieu, F-75005 Paris, France.
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16
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Saneei A, Pourayoubi M, Jasinski JP, Jenny TA, Crochet A, Fromm KM, Keeley AC. The synergistic cooperation of NH⋯O and CH⋯O hydrogen bonds in the structures of three new phosphoric triamides. PHOSPHORUS SULFUR 2017. [DOI: 10.1080/10426507.2017.1399128] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Anahid Saneei
- Department of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran
| | - Mehrdad Pourayoubi
- Department of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran
| | | | - Titus A. Jenny
- Department of Chemistry, University of Fribourg, Rte du Musée 9, Fribourg, Switzerland
| | - Aurelien Crochet
- Fribourg Centre for Nanomaterial's, FriMat, University of Fribourg, Chemin du Musée 3, Fribourg, Switzerland
| | - Katharina M. Fromm
- Fribourg Centre for Nanomaterial's, FriMat, University of Fribourg, Chemin du Musée 3, Fribourg, Switzerland
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17
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Gropp C, Husch T, Trapp N, Reiher M, Diederich F. Dispersion and Halogen-Bonding Interactions: Binding of the Axial Conformers of Monohalo- and (±)-trans-1,2-Dihalocyclohexanes in Enantiopure Alleno-Acetylenic Cages. J Am Chem Soc 2017; 139:12190-12200. [DOI: 10.1021/jacs.7b05461] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Cornelius Gropp
- Laboratorium
für Organische Chemie, ETH Zurich, Vladimir-Prelog-Weg 3, 8093 Zurich, Switzerland
| | - Tamara Husch
- Laboratorium
für Physikalische Chemie, ETH Zurich, Vladimir-Prelog-Weg 2, 8093 Zurich, Switzerland
| | - Nils Trapp
- Laboratorium
für Organische Chemie, ETH Zurich, Vladimir-Prelog-Weg 3, 8093 Zurich, Switzerland
| | - Markus Reiher
- Laboratorium
für Physikalische Chemie, ETH Zurich, Vladimir-Prelog-Weg 2, 8093 Zurich, Switzerland
| | - François Diederich
- Laboratorium
für Organische Chemie, ETH Zurich, Vladimir-Prelog-Weg 3, 8093 Zurich, Switzerland
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18
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Dominelli‐Whiteley N, Brown JJ, Muchowska KB, Mati IK, Adam C, Hubbard TA, Elmi A, Brown AJ, Bell IAW, Cockroft SL. Strong Short-Range Cooperativity in Hydrogen-Bond Chains. Angew Chem Int Ed Engl 2017; 56:7658-7662. [PMID: 28493462 PMCID: PMC5488241 DOI: 10.1002/anie.201703757] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2017] [Revised: 05/09/2017] [Indexed: 01/23/2023]
Abstract
Chains of hydrogen bonds such as those found in water and proteins are often presumed to be more stable than the sum of the individual H bonds. However, the energetics of cooperativity are complicated by solvent effects and the dynamics of intermolecular interactions, meaning that information on cooperativity typically is derived from theory or indirect structural data. Herein, we present direct measurements of energetic cooperativity in an experimental system in which the geometry and the number of H bonds in a chain were systematically controlled. Strikingly, we found that adding a second H-bond donor to form a chain can almost double the strength of the terminal H bond, while further extensions have little effect. The experimental observations add weight to computations which have suggested that strong, but short-range cooperative effects may occur in H-bond chains.
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Affiliation(s)
- Nicholas Dominelli‐Whiteley
- EaStCHEM School of ChemistryUniversity of Edinburgh, Joseph Black BuildingDavid Brewster RoadEdinburghEH9 3FJUK
| | - James J. Brown
- EaStCHEM School of ChemistryUniversity of Edinburgh, Joseph Black BuildingDavid Brewster RoadEdinburghEH9 3FJUK
| | - Kamila B. Muchowska
- EaStCHEM School of ChemistryUniversity of Edinburgh, Joseph Black BuildingDavid Brewster RoadEdinburghEH9 3FJUK
| | - Ioulia K. Mati
- EaStCHEM School of ChemistryUniversity of Edinburgh, Joseph Black BuildingDavid Brewster RoadEdinburghEH9 3FJUK
| | - Catherine Adam
- EaStCHEM School of ChemistryUniversity of Edinburgh, Joseph Black BuildingDavid Brewster RoadEdinburghEH9 3FJUK
| | - Thomas A. Hubbard
- EaStCHEM School of ChemistryUniversity of Edinburgh, Joseph Black BuildingDavid Brewster RoadEdinburghEH9 3FJUK
| | - Alex Elmi
- EaStCHEM School of ChemistryUniversity of Edinburgh, Joseph Black BuildingDavid Brewster RoadEdinburghEH9 3FJUK
| | | | - Ian A. W. Bell
- Afton Chemical LimitedLondon RoadBracknellBerkshireRG12 2UWUK
| | - Scott L. Cockroft
- EaStCHEM School of ChemistryUniversity of Edinburgh, Joseph Black BuildingDavid Brewster RoadEdinburghEH9 3FJUK
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19
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Dominelli-Whiteley N, Brown JJ, Muchowska KB, Mati IK, Adam C, Hubbard TA, Elmi A, Brown AJ, Bell IAW, Cockroft SL. Strong Short-Range Cooperativity in Hydrogen-Bond Chains. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201703757] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Nicholas Dominelli-Whiteley
- EaStCHEM School of Chemistry; University of Edinburgh, Joseph Black Building; David Brewster Road Edinburgh EH9 3FJ UK
| | - James J. Brown
- EaStCHEM School of Chemistry; University of Edinburgh, Joseph Black Building; David Brewster Road Edinburgh EH9 3FJ UK
| | - Kamila B. Muchowska
- EaStCHEM School of Chemistry; University of Edinburgh, Joseph Black Building; David Brewster Road Edinburgh EH9 3FJ UK
| | - Ioulia K. Mati
- EaStCHEM School of Chemistry; University of Edinburgh, Joseph Black Building; David Brewster Road Edinburgh EH9 3FJ UK
| | - Catherine Adam
- EaStCHEM School of Chemistry; University of Edinburgh, Joseph Black Building; David Brewster Road Edinburgh EH9 3FJ UK
| | - Thomas A. Hubbard
- EaStCHEM School of Chemistry; University of Edinburgh, Joseph Black Building; David Brewster Road Edinburgh EH9 3FJ UK
| | - Alex Elmi
- EaStCHEM School of Chemistry; University of Edinburgh, Joseph Black Building; David Brewster Road Edinburgh EH9 3FJ UK
| | | | - Ian A. W. Bell
- Afton Chemical Limited; London Road Bracknell Berkshire RG12 2UW UK
| | - Scott L. Cockroft
- EaStCHEM School of Chemistry; University of Edinburgh, Joseph Black Building; David Brewster Road Edinburgh EH9 3FJ UK
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20
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Adelizzi B, Filot IAW, Palmans ARA, Meijer EW. Unravelling the Pathway Complexity in Conformationally Flexible N-Centered Triarylamine Trisamides. Chemistry 2017; 23:6103-6110. [PMID: 27981630 PMCID: PMC5434799 DOI: 10.1002/chem.201603938] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2016] [Indexed: 11/06/2022]
Abstract
Two families of C3 -symmetrical triarylamine-trisamides comprising a triphenylamine- or a tri(pyrid-2-yl)amine core are presented. Both families self-assemble in apolar solvents via cooperative hydrogen-bonding interactions into helical supramolecular polymers as evidenced by a combination of spectroscopic measurements, and corroborated by DFT calculations. The introduction of a stereocenter in the side chains biases the helical sense of the supramolecular polymers formed. Compared to other C3 -symmetrical compounds, a much richer self-assembly landscape is observed. Temperature-dependent spectroscopy measurements highlight the presence of two self-assembled states of opposite handedness. One state is formed at high temperature from a molecularly dissolved solution via a nucleation-elongation mechanism. The second state is formed below room temperature through a sharp transition from the first assembled state. The change in helicity is proposed to be related to a conformational switch of the triarylamine core due to an equilibrium between a 3:0 and a 2:1 conformation. Thus, within a limited temperature window, a small conformational twist results in an assembled state of opposite helicity.
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Affiliation(s)
- Beatrice Adelizzi
- Laboratory of Macromolecular and Organic ChemistryEindhoven University of TechnologyEindhovenThe Netherlands
- Institute for Complex Molecular SystemsEindhoven University of TechnologyEindhovenThe Netherlands
| | - Ivo A. W. Filot
- Institute of CatalysisEindhoven University of TechnologyEindhovenThe Netherlands
| | - Anja R. A. Palmans
- Laboratory of Macromolecular and Organic ChemistryEindhoven University of TechnologyEindhovenThe Netherlands
- Institute for Complex Molecular SystemsEindhoven University of TechnologyEindhovenThe Netherlands
| | - E. W. Meijer
- Laboratory of Macromolecular and Organic ChemistryEindhoven University of TechnologyEindhovenThe Netherlands
- Institute for Complex Molecular SystemsEindhoven University of TechnologyEindhovenThe Netherlands
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21
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Ressouche E, Pensec S, Isare B, Jestin J, Bouteiller L. Two-Component Self-Assemblies: Investigation of a Synergy between Bisurea Stickers. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:11664-11671. [PMID: 27726400 DOI: 10.1021/acs.langmuir.6b03325] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
It is of interest to develop two-component systems for added flexibility in the design of supramolecular polymers, nanofibers, or organogels. Bisureas are known to self-assemble by hydrogen bonding into long supramolecular objects. We show here that mixing aromatic bisureas with slightly different structures can yield surprisingly large synergistic effects. A strong increase in viscosity is observed when a bisurea with the sterically demanding 2,4,6-trimethylbenzene spacer is combined with a bisurea bearing no methyl group in position 2 of the aromatic spacer (i.e., 4-methylbenzene or 4,6-dimethylbenzene). This effect is the consequence of a change in the supramolecular assembly triggered by the composition of the mixture. The mixture of complementary bisureas forms rodlike objects that are more stable by about 1 kJ/mol and that are thicker than the rodlike objects formed by both parent systems.
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Affiliation(s)
- Emilie Ressouche
- Sorbonne Universités, UPMC Univ Paris 06, CNRS , Institut Parisien de Chimie Moléculaire, Equipe Chimie des Polymères, 4 Place Jussieu, Paris F-75005, France
| | - Sandrine Pensec
- Sorbonne Universités, UPMC Univ Paris 06, CNRS , Institut Parisien de Chimie Moléculaire, Equipe Chimie des Polymères, 4 Place Jussieu, Paris F-75005, France
| | - Benjamin Isare
- Sorbonne Universités, UPMC Univ Paris 06, CNRS , Institut Parisien de Chimie Moléculaire, Equipe Chimie des Polymères, 4 Place Jussieu, Paris F-75005, France
| | - Jacques Jestin
- Laboratoire Léon Brillouin, UMR 12 CNRS-CEA , Gif-sur-Yvette Cedex 91191, France
| | - Laurent Bouteiller
- Sorbonne Universités, UPMC Univ Paris 06, CNRS , Institut Parisien de Chimie Moléculaire, Equipe Chimie des Polymères, 4 Place Jussieu, Paris F-75005, France
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22
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Rödle A, Ritschel B, Mück-Lichtenfeld C, Stepanenko V, Fernández G. Influence of Ester versus Amide Linkers on the Supramolecular Polymerization Mechanisms of Planar BODIPY Dyes. Chemistry 2016; 22:15772-15777. [DOI: 10.1002/chem.201602592] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2016] [Indexed: 12/11/2022]
Affiliation(s)
- Alexander Rödle
- Organisch-Chemisches Institut; Westfälische Wilhelms-Universität Münster; Corrensstraße 40 48149 Münster Germany
- Institut für Organische Chemie and Center for Nanosystems Chemistry; Julius-Maximilians-Universität Würzburg; Am Hubland 97074 Würzburg Germany
| | - Benedikt Ritschel
- Institut für Organische Chemie and Center for Nanosystems Chemistry; Julius-Maximilians-Universität Würzburg; Am Hubland 97074 Würzburg Germany
| | - Christian Mück-Lichtenfeld
- Organisch-Chemisches Institut; Westfälische Wilhelms-Universität Münster; Corrensstraße 40 48149 Münster Germany
| | - Vladimir Stepanenko
- Institut für Organische Chemie and Center for Nanosystems Chemistry; Julius-Maximilians-Universität Würzburg; Am Hubland 97074 Würzburg Germany
| | - Gustavo Fernández
- Organisch-Chemisches Institut; Westfälische Wilhelms-Universität Münster; Corrensstraße 40 48149 Münster Germany
- Institut für Organische Chemie and Center for Nanosystems Chemistry; Julius-Maximilians-Universität Würzburg; Am Hubland 97074 Würzburg Germany
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23
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Ressouche E, Pensec S, Isare B, Ducouret G, Bouteiller L. Rational Design of Urea-Based Two-Component Organogelators. ACS Macro Lett 2016; 5:244-247. [PMID: 35614686 DOI: 10.1021/acsmacrolett.5b00931] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Low molecular weight gelators are versatile and responsive gel-forming systems. However, it is still a challenge to develop a new organogelator for a precise application, i.e., to gel a predetermined liquid. We propose a simple concept of a two-component gelling system that can be rationally adapted to gel liquids ranging in polarity from silicone oil to acetonitrile.
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Affiliation(s)
- Emilie Ressouche
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, Institut Parisien de Chimie Moléculaire, Equipe Chimie
des Polymères, 4 Place Jussieu, F-75005 Paris, France
| | - Sandrine Pensec
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, Institut Parisien de Chimie Moléculaire, Equipe Chimie
des Polymères, 4 Place Jussieu, F-75005 Paris, France
| | - Benjamin Isare
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, Institut Parisien de Chimie Moléculaire, Equipe Chimie
des Polymères, 4 Place Jussieu, F-75005 Paris, France
| | - Guylaine Ducouret
- Sciences
et Ingénierie de la Matière Molle, CNRS UMR 7615, École Supérieure de Physique et de Chimie Industrielles de la Ville de Paris (ESPCI), ParisTech, PSL Research University, 10 rue Vauquelin, F-75231 Paris, France
- SIMM,
UPMC Univ Paris 06, Sorbonne Universités, 10 rue Vauquelin, F-75231 Paris, France
| | - Laurent Bouteiller
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, Institut Parisien de Chimie Moléculaire, Equipe Chimie
des Polymères, 4 Place Jussieu, F-75005 Paris, France
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24
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Affiliation(s)
- A. Subha Mahadevi
- Centre for Molecular Modelling, CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad, India 500607
| | - G. Narahari Sastry
- Centre for Molecular Modelling, CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad, India 500607
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25
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Isare B, Pensec S, Raynal M, Bouteiller L. Bisurea-based supramolecular polymers: From structure to properties11Dedicated to Professor Jean-Pierre Vairon on the occasion of his 78th birthday. CR CHIM 2016. [DOI: 10.1016/j.crci.2015.06.013] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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26
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Rest C, Kandanelli R, Fernández G. Strategies to create hierarchical self-assembled structures via cooperative non-covalent interactions. Chem Soc Rev 2015; 44:2543-72. [PMID: 25735967 DOI: 10.1039/c4cs00497c] [Citation(s) in RCA: 296] [Impact Index Per Article: 32.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Cooperative phenomena are common processes involved in the hierarchical self-assembly of multiple systems in nature, such as the tobacco mosaic virus and a cell's cytoskeleton. Motivated by the high degree of order exhibited by these systems, a great deal of effort has been devoted in the past two decades to design hierarchical supramolecular polymers by combining different classes of cooperative interactions. In this review, we have classified the field of supramolecular polymers depending on the cooperative non-covalent forces driving their formation, with particular emphasis on recent examples from literature. We believe that this overview would help scientists in the field to design novel self-assembled systems with improved complexity and functionalities.
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Affiliation(s)
- Christina Rest
- Institut für Organische Chemie and Center for Nanosystems Chemistry, Universität Würzburg Am Hubland, 97074 Würzburg, Germany.
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27
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Dirany M, Ayzac V, Isare B, Raynal M, Bouteiller L. Structural Control of Bisurea-Based Supramolecular Polymers: Influence of an Ester Moiety. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:11443-11451. [PMID: 26461519 DOI: 10.1021/acs.langmuir.5b02974] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A few examples of monomers are known that self-assemble into various high molar mass structures in solution. Controlling the morphology of the resulting supramolecular polymers is a highly desirable goal for many applications. Herein, we compare the self-assembling properties of newly prepared ester bisurea monomers with those of previously investigated alkyl bisurea monomers. The ester functionality decreases the hydrogen bonding strength of the bisurea monomers but does not prevent the formation of long assemblies in nonpolar solvents: gels are formed at millimolar concentration. Surprisingly, ester bisureas self-assemble at room temperature into rod-like urea-bonded supramolecular polymers that are different from the ones formed by alkyl bisureas. The rods formed by ester bisurea supramolecular polymers are compact (instead of tubular in the case of alkyl bisureas) and display two monomers in the cross-section (instead of three in the case of alkyl bisureas). The stability of the structures formed by ester bisureas can be easily tuned by changing the nature of the substituent in the α-position of the urea functions and/or the nature of the alkyl side chains.
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Affiliation(s)
- Mohammed Dirany
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, Institut Parisien de Chimie Moléculaire, Equipe Chimie des Polymères, 4 Place Jussieu, F-75005 Paris, France
| | - Virgile Ayzac
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, Institut Parisien de Chimie Moléculaire, Equipe Chimie des Polymères, 4 Place Jussieu, F-75005 Paris, France
| | - Benjamin Isare
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, Institut Parisien de Chimie Moléculaire, Equipe Chimie des Polymères, 4 Place Jussieu, F-75005 Paris, France
| | - Matthieu Raynal
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, Institut Parisien de Chimie Moléculaire, Equipe Chimie des Polymères, 4 Place Jussieu, F-75005 Paris, France
| | - Laurent Bouteiller
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, Institut Parisien de Chimie Moléculaire, Equipe Chimie des Polymères, 4 Place Jussieu, F-75005 Paris, France
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28
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Saha S, Sastry GN. Cooperative or Anticooperative: How Noncovalent Interactions Influence Each Other. J Phys Chem B 2015; 119:11121-35. [DOI: 10.1021/acs.jpcb.5b03005] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Soumen Saha
- Centre for Molecular Modeling, CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad 500007, Andhra Pradesh, India
| | - G. Narahari Sastry
- Centre for Molecular Modeling, CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad 500007, Andhra Pradesh, India
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29
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Vissers T, Smallenburg F, Munaò G, Preisler Z, Sciortino F. Cooperative polymerization of one-patch colloids. J Chem Phys 2015; 140:144902. [PMID: 24735313 DOI: 10.1063/1.4869834] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
We numerically investigate cooperative polymerization in an off-lattice model based on a pairwise additive potential using particles with a single attractive patch that covers 30% of the colloid surface. Upon cooling, these particles self-assemble into small clusters which, below a density-dependent temperature, spontaneously reorganize into long straight tubes. We evaluate the partition functions of clusters of all sizes to provide an accurate description of the chemical reaction constants governing this process. Our calculations show that, for intermediate sizes, the partition functions retain contributions from two different structures, differing in both energy and entropy. We illustrate the microscopic mechanism behind the complex polymerization process in this system and provide a detailed evaluation of its thermodynamics.
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Affiliation(s)
- Teun Vissers
- Sapienza, Università di Roma, Piazzale Aldo Moro 2, 00185, Roma, Italy
| | - Frank Smallenburg
- Sapienza, Università di Roma, Piazzale Aldo Moro 2, 00185, Roma, Italy
| | - Gianmarco Munaò
- Sapienza, Università di Roma, Piazzale Aldo Moro 2, 00185, Roma, Italy
| | - Zdeněk Preisler
- Sapienza, Università di Roma, Piazzale Aldo Moro 2, 00185, Roma, Italy
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30
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Persch E, Dumele O, Diederich F. Molekulare Erkennung in chemischen und biologischen Systemen. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201408487] [Citation(s) in RCA: 102] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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31
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Vojta D, Kovačević G, Vazdar M. The exploration of hydrogen bonding properties of 2,6- and 3,5-diethynylpyridine by IR spectroscopy. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 136 Pt C:1912-1923. [PMID: 25467686 DOI: 10.1016/j.saa.2014.10.107] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2014] [Revised: 10/17/2014] [Accepted: 10/23/2014] [Indexed: 06/04/2023]
Abstract
Hydrogen bonding properties of 2,6- and 3,5-diethynylpyridine were analyzed by exploring of their interactions with trimethylphosphate, as hydrogen bond acceptor, or phenol, as hydrogen bond donor, in tetrachloroethene C2Cl4. The employment of IR spectroscopy enabled unravelling of their interaction pattern as well as the determination of their association constants (Kc) and standard reaction enthalpies (ΔrH(⦵)). The association of diethynylpyridines with trimethylphosphate in stoichiometry 1:1 is established through CH⋯O hydrogen bond, accompanied by the secondary interaction between CC moiety and CH3 group of trimethylphosphate. In the complexes with phenol, along with the expected OH⋯N interaction, CC⋯HO interaction is revealed. In contrast to 2,6-diethynylpyridine where the spatial arrangement of hydrogen bond accepting groups enables the simultaneous involvement of phenol OH group in both OH⋯N and OH⋯CC hydrogen bond, in the complex between phenol and 3,5-diethynylpyridine this is not possible. It is postulated that cooperativity effects, arisen from the certain type of resonance-assisted hydrogen bonds, contribute the stability gain of the latter. Associations of diethynylpyridines with trimethylphosphate are characterized as weak (Kc≈0.8-0.9mol(-1)dm(3); -ΔrH(⦵)≈5-8kJmol(-1)), while their complexes with phenol as medium strong (Kc≈5mol(-1)dm(3); -ΔrH(⦵)≈15-35kJmol(-1)). Experimental findings on the studied complexes are supported with the calculations conducted at B3LYP/6-311++G(d,p) level of theory in the gas phase. Two conformers of diethynylpyridine⋯trimethylphosphate dimers are formed via CH⋯O interaction, whereas dimers between phenol and diethynylpyridines are established through OH⋯N interaction.
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Affiliation(s)
- Danijela Vojta
- Division of Organic Chemistry and Biochemistry, Ruđer Bošković Institute, Bijenička 54, 10001 Zagreb, Croatia.
| | - Goran Kovačević
- Division of Materials Physics, Ruđer Bošković Institute, Bijenička 54, 10001 Zagreb, Croatia
| | - Mario Vazdar
- Division of Organic Chemistry and Biochemistry, Ruđer Bošković Institute, Bijenička 54, 10001 Zagreb, Croatia
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32
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Persch E, Dumele O, Diederich F. Molecular recognition in chemical and biological systems. Angew Chem Int Ed Engl 2015; 54:3290-327. [PMID: 25630692 DOI: 10.1002/anie.201408487] [Citation(s) in RCA: 417] [Impact Index Per Article: 46.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2014] [Indexed: 12/13/2022]
Abstract
Structure-based ligand design in medicinal chemistry and crop protection relies on the identification and quantification of weak noncovalent interactions and understanding the role of water. Small-molecule and protein structural database searches are important tools to retrieve existing knowledge. Thermodynamic profiling, combined with X-ray structural and computational studies, is the key to elucidate the energetics of the replacement of water by ligands. Biological receptor sites vary greatly in shape, conformational dynamics, and polarity, and require different ligand-design strategies, as shown for various case studies. Interactions between dipoles have become a central theme of molecular recognition. Orthogonal interactions, halogen bonding, and amide⋅⋅⋅π stacking provide new tools for innovative lead optimization. The combination of synthetic models and biological complexation studies is required to gather reliable information on weak noncovalent interactions and the role of water.
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Affiliation(s)
- Elke Persch
- Laboratorium für Organische Chemie, Departement Chemie und Angewandte Biowissenschaften, ETH Zürich, Vladimir-Prelog-Weg 3, 8093 Zürich (Switzerland)
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33
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Li X, He A, Huang K, Liu H, Zhao Y, Wei Y, Xu Y, Noda I, Wu J. Two-dimensional asynchronous spectrum with auxiliary cross peaks in probing intermolecular interactions. RSC Adv 2015. [DOI: 10.1039/c5ra16062f] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
A new approach called “asynchronous spectrum with auxiliary peaks (ASAP)” is proposed for generating a 2D asynchronous spectrum to investigate the intermolecular interaction between two solutes (P and Q) dissolved in the same solution.
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Affiliation(s)
- Xiaopei Li
- Institute of Process Engineering
- Chinese Academy of Sciences
- P. R. China
- Beijing National Laboratory for Molecular Sciences
- State Key Laboratory for Rare Earth Materials Chemistry and Applications
| | - Anqi He
- Beijing National Laboratory for Molecular Sciences
- State Key Laboratory for Rare Earth Materials Chemistry and Applications
- College of Chemistry and Molecular Engineering
- Peking University
- Beijing 100871
| | - Kun Huang
- Institute of Process Engineering
- Chinese Academy of Sciences
- P. R. China
| | - Huizhou Liu
- Institute of Process Engineering
- Chinese Academy of Sciences
- P. R. China
| | - Ying Zhao
- Institute of Chemistry
- Chinese Academy of Sciences
- P. R. China
| | - Yongju Wei
- College of Chemistry and Material Science
- Hebei Normal University
- Shijiazhuang
- P. R. China
| | - Yizhuang Xu
- Beijing National Laboratory for Molecular Sciences
- State Key Laboratory for Rare Earth Materials Chemistry and Applications
- College of Chemistry and Molecular Engineering
- Peking University
- Beijing 100871
| | - Isao Noda
- Beijing National Laboratory for Molecular Sciences
- State Key Laboratory for Rare Earth Materials Chemistry and Applications
- College of Chemistry and Molecular Engineering
- Peking University
- Beijing 100871
| | - Jinguang Wu
- Beijing National Laboratory for Molecular Sciences
- State Key Laboratory for Rare Earth Materials Chemistry and Applications
- College of Chemistry and Molecular Engineering
- Peking University
- Beijing 100871
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34
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Jouvelet B, Isare B, Bouteiller L, van der Schoot P. Direct probing of the free-energy penalty for helix reversals and chiral mismatches in chiral supramolecular polymers. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:4570-4575. [PMID: 24138136 DOI: 10.1021/la403316a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The amplification of chirality, where a small imbalance in a chiral constituent is propagated into a strong optical purity, can occur in the spontaneous formation of helical 1-D stacks of molecules stabilized by hydrogen bonding, also known as supramolecular polymers. We have extended a statistical model by van Gestel et al. describing the highly nonlinear relationship between supramolecular helicity and enantiomeric excess for mixtures of enantiomers (the majority-rules effect) and quantitatively account for how this affects the thermodynamic stability of the assemblies. Our method allows for a direct comparison with experimental data, providing an unambiguous determination of the key parameters of the model (i.e., the mismatch and the helix reversal penalties). We demonstrate the successful application of this model to calorimetry data for bis-urea-based helical nanotubes, showing that reversals in the handedness of these nanotubes are not all that rare even though the helix reversal penalty is fairly large. By contrast, the mismatch penalty we obtain is small, implying that a large proportion of enantiomers are present in tube fractions not of their preferred handedness.
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Affiliation(s)
- Benjamin Jouvelet
- Chimie des Polymères, UPMC Univ Paris 06, UMR 7610 , F-75005 Paris, France
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35
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Silveira RL, Stoyanov SR, Gusarov S, Skaf MS, Kovalenko A. Plant biomass recalcitrance: effect of hemicellulose composition on nanoscale forces that control cell wall strength. J Am Chem Soc 2013; 135:19048-51. [PMID: 24274712 DOI: 10.1021/ja405634k] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Efficient conversion of lignocellulosic biomass to second-generation biofuels and valuable chemicals requires decomposition of resilient plant cell wall structure. Cell wall recalcitrance varies among plant species and even phenotypes, depending on the chemical composition of the noncellulosic matrix. Changing the amount and composition of branches attached to the hemicellulose backbone can significantly alter the cell wall strength and microstructure. We address the effect of hemicellulose composition on primary cell wall assembly forces by using the 3D-RISM-KH molecular theory of solvation, which provides statistical-mechanical sampling and molecular picture of hemicellulose arrangement around cellulose. We show that hemicellulose branches of arabinose, glucuronic acid, and especially glucuronate strengthen the primary cell wall by strongly coordinating to hydrogen bond donor sites on the cellulose surface. We reveal molecular forces maintaining the cell wall structure and provide directions for genetic modulation of plants and pretreatment design to render biomass more amenable to processing.
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Affiliation(s)
- Rodrigo L Silveira
- National Institute for Nanotechnology , 11421 Saskatchewan Drive, Edmonton, Alberta, T6G 2M9, Canada
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36
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Brocorens P, Linares M, Guyard-Duhayon C, Guillot R, Andrioletti B, Suhr D, Isare B, Lazzaroni R, Bouteiller L. Conformational Plasticity of Hydrogen Bonded Bis-urea Supramolecular Polymers. J Phys Chem B 2013; 117:5379-86. [DOI: 10.1021/jp401915y] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Patrick Brocorens
- Service de Chimie des Matériaux
Nouveaux, Université de Mons/Materia Nova, Place du Parc, 20, B-7000 Mons, Belgium
| | - Mathieu Linares
- Department of Physics, Chemistry
and Biology (IFM), Linköping University, SE-58183 Linköping, Sweden
| | - Carine Guyard-Duhayon
- Laboratoire de Chimie de Coordination du CNRS, BP 44099, 205 route de Narbonne,
31077 Toulouse Cedex 4, France
| | - Régis Guillot
- Institut de Chimie Moléculaire
et des Matériaux d’Orsay, UMR CNRS 8182, Bât.
420 Université Paris-Sud, 91405
Orsay Cedex, France
| | - Bruno Andrioletti
- Université Claude Bernard-Lyon 1, ICBMS-UMR 5246, 43 Boulevard
du 11 Novembre 1918, F-69622 Villeurbanne cedex, France
| | - Dominique Suhr
- UPMC Université Paris 06, UMR 7610, Chimie des Polymères, F-75005
Paris, France, and CNRS, UMR 7610, Chimie des Polymères, F-75005
Paris, France
| | - Benjamin Isare
- UPMC Université Paris 06, UMR 7610, Chimie des Polymères, F-75005
Paris, France, and CNRS, UMR 7610, Chimie des Polymères, F-75005
Paris, France
| | - Roberto Lazzaroni
- Service de Chimie des Matériaux
Nouveaux, Université de Mons/Materia Nova, Place du Parc, 20, B-7000 Mons, Belgium
| | - Laurent Bouteiller
- UPMC Université Paris 06, UMR 7610, Chimie des Polymères, F-75005
Paris, France, and CNRS, UMR 7610, Chimie des Polymères, F-75005
Paris, France
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37
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Abstract
Recently, inorganic double-helical structures based on simple lithium and phosphorus salts have been demonstrated. We have analyzed the nature of bonding in these double helices of LinPn (n = 7-9). Similar to DNA, noncovalent interactions and cooperativity play an important role in stabilizing the inorganic double helices. Cooperativity imparts an additional stabilization of 4.5 to 10.1 kcal/mol per Li-P pair. In addition, the ionicity of Li-P units further augments the stability of these inorganic double-helix structures in contrast with the canonical base pairs in DNA, where noncovalent interactions determine the duplex stability. Unwinding is shown to be unfavorable, and cleavage of a few edge Li-P bonds leads to spontaneous self-healing into the intact double-helix tract.
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Affiliation(s)
- A K Jissy
- †School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram, CET Campus, Thiruvananthapuram-695016, Kerala, India
| | - Ayan Datta
- ‡Department of Spectroscopy, Indian Association for the Cultivation of Science, Jadavpur -700032, West Bengal, India
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38
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Adamczyk-Woźniak A, Brzózka Z, Dąbrowski M, Madura ID, Scheidsbach R, Tomecka E, Żukowski K, Sporzyński A. Influence of the ortho-methoxyalkyl substituent on the properties of phenylboronic acids. J Mol Struct 2013. [DOI: 10.1016/j.molstruc.2012.09.049] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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39
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Ribagnac P, Cannizzo C, Méallet-Renault R, Clavier G, Audebert P, Pansu R, Bouteiller L. Fluorescent Labeling of a Bisurea-Based Supramolecular Polymer. J Phys Chem B 2013; 117:1958-66. [DOI: 10.1021/jp307829x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Philippe Ribagnac
- Laboratoire de Chimie des Polymères—UMR
7610, Université Pierre et Marie Curie Site Le Raphaël, 3, rue Galilée 94200 Ivry-sur-Seine,
France
| | - Caroline Cannizzo
- Laboratoire de Chimie des Polymères—UMR
7610, Université Pierre et Marie Curie Site Le Raphaël, 3, rue Galilée 94200 Ivry-sur-Seine,
France
| | - Rachel Méallet-Renault
- Laboratoire de Photophysique
et Photochimie Supramoléculaires et Macromoléculaires—UMR
8531 61, Ecole Normale Supérieure de Cachan, avenue du Président Wilson, 94235 Cachan cedex, France
| | - Gilles Clavier
- Laboratoire de Photophysique
et Photochimie Supramoléculaires et Macromoléculaires—UMR
8531 61, Ecole Normale Supérieure de Cachan, avenue du Président Wilson, 94235 Cachan cedex, France
| | - Pierre Audebert
- Laboratoire de Photophysique
et Photochimie Supramoléculaires et Macromoléculaires—UMR
8531 61, Ecole Normale Supérieure de Cachan, avenue du Président Wilson, 94235 Cachan cedex, France
| | - Robert Pansu
- Laboratoire de Photophysique
et Photochimie Supramoléculaires et Macromoléculaires—UMR
8531 61, Ecole Normale Supérieure de Cachan, avenue du Président Wilson, 94235 Cachan cedex, France
| | - Laurent Bouteiller
- Laboratoire de Chimie des Polymères—UMR
7610, Université Pierre et Marie Curie Site Le Raphaël, 3, rue Galilée 94200 Ivry-sur-Seine,
France
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40
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Aparicio F, García F, Sánchez L. Supramolecular polymerization of C3-symmetric organogelators: cooperativity, solvent, and gelation relationship. Chemistry 2013; 19:3239-48. [PMID: 23345173 DOI: 10.1002/chem.201202584] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2012] [Revised: 11/30/2012] [Indexed: 11/11/2022]
Abstract
A systematic study of the influence of solvent and the size of C(3)-symmetric discotics on their supramolecular polymerization mechanism is presented. The cooperativity of the self-assembly of the reported compounds is directly related to their gelation ability. The two series of C(3)-symmetric discotics investigated herein are based on benzene-1,3,5-tricarboxamides (BTAs) and oligo(phenylene ethynylene)-based tricarboxamides (OPETAs) that are peripherally decorated with achiral (1a and 2a) or chiral N-(2-aminoethyl)-3,4,5-trialkoxybenzamide units (1b and 2b). The supramolecular polymerization of compounds 1a,b and 2a,b has been exhaustively investigated in a number of solvents and by using various techniques: variable-temperature circular dichroism (VT-CD) spectroscopy, concentration-dependent (1)H NMR spectroscopy, and isothermal titration calorimetry (ITC). The supramolecular polymerization mechanism of compounds 2 is highly cooperative in solvents such as methylcyclohexane and toluene and is isodesmic in CHCl(3). Unexpectedly, chiral compound 1b is practically CD-silent, in contrast with previously reported BTAs. ITC measurements in CHCl(3) demonstrated that the supramolecular polymerization of BTA 1a is isodesmic. These results confirm the strong influence of the π-surface of the central aromatic core of the studied discotic and the branched nature of the peripheral side chains on the supramolecular polymerization. The gelation ability of these organogelators is negated in CHCl(3), in which the supramolecular polymerization mechanism is isodesmic.
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Affiliation(s)
- Fátima Aparicio
- Departamento de Química Orgánica, Facultad de Ciencias Químicas, Ciudad Universitaria s/n., 28040 Madrid, Spain
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41
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Mahadevi AS, Sastry GN. Cation-π interaction: its role and relevance in chemistry, biology, and material science. Chem Rev 2012; 113:2100-38. [PMID: 23145968 DOI: 10.1021/cr300222d] [Citation(s) in RCA: 719] [Impact Index Per Article: 59.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- A Subha Mahadevi
- Molecular Modeling Group, CSIR-Indian Institute of Chemical Technology Tarnaka, Hyderabad 500 607, Andhra Pradesh, India
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42
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Schaefer C, Voets I, Palmans A, Meijer E, van der Schoot P, Besenius P. Controlling the Cooperativity in the Supramolecular Polymerization of Ionic Discotic Amphiphiles via Electrostatic Screening. ACS Macro Lett 2012; 1:830-833. [PMID: 35607127 DOI: 10.1021/mz300218e] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
In a combined experimental and theoretical approach, we investigate the supramolecular polymerization of ionic discotic amphiphiles into nanorods of varying mean length, depending on the temperature and ionic strength of the buffered aqueous solution. Invoking a nucleated supramolecular polymerization model that explicitly deals with the effects of screened Coulomb interactions, we correlate the degree of cooperativity of the supramolecular polymerization with the ionic strength of the solution, as probed by means of circular dichroism spectroscopy. Experiment and theory show that electrostatic interactions between the amphiphiles in the rods make the polymerization less cooperative, implying that the larger the concentration of mobile ions in the solution the larger the cooperativity due to their screening effect. We furthermore extract quantitative information about the effective surface charge densities of the supramolecular nanorods in solution, a parameter that has been particularly difficult to determine experimentally in other related self-assembled systems.
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Affiliation(s)
| | | | | | | | - P. van der Schoot
- Institute for Theoretical
Physics, University of Utrecht, Leuvenlaan 4, 3584 CE Utrecht, The Netherlands
| | - P. Besenius
- Organic Chemistry
Institute and CeNTech, Westfälische Wilhelms-Universität Münster, Corrensstrasse
40, D-48149 Münster, Germany
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43
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Isare B, Pembouong G, Boué F, Bouteiller L. Conformational control of hydrogen-bonded aromatic bis-ureas. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:7535-7541. [PMID: 22510107 DOI: 10.1021/la300887p] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The phenylurea moiety is a ubiquitous synthon in supramolecular chemistry because it contains strong complementary hydrogen bonding groups and is synthetically very accessible. Here we investigate the possibility to strengthen self-association by conformational preorganization of the phenylurea moiety. In fact, we show that it is possible to strongly enhance intermolecular interactions between hydrogen bonded aromatic bis-ureas by substitution at the ortho positions of the phenylurea groups. Ortho substituents enforce a noncoplanar conformation of the urea and phenyl moieties better suited for hydrogen bonding. Substitution by methyl groups is more efficient than with larger groups, probably because of reduced steric hindrance. These effects have been demonstrated in the case of two different supramolecular architectures, which points to the probable generality of the phenomenon. In addition, this study has led to the discovery of a new bis-urea able to form very stable self-assembled nanotubes in toluene up to high temperatures (boiling point) or low concentrations (10(-7) M) and in chloroform down to 3 × 10(-4) M.
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Affiliation(s)
- Benjamin Isare
- UPMC Université Paris 06 and CNRS, UMR 7610, Chimie des Polymères, F-75005 Paris, France
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44
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Cantekin S, Nakano Y, Everts JC, van der Schoot P, Meijer EW, Palmans ARA. A stereoselectively deuterated supramolecular motif to probe the role of solvent during self-assembly processes. Chem Commun (Camb) 2012; 48:3803-5. [PMID: 22278322 DOI: 10.1039/c2cc17284d] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Small changes in the alkane solvent structure in combination with temperature effects lead to four different conformations of stereoselectively deuterated benzene-1,3,5-tricarboxamides in the aggregated state, affecting the expression of the supramolecular chirality and highlighting the role of the solvent structure in self-assembly processes.
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Affiliation(s)
- Seda Cantekin
- Institute for Complex Molecular Systems, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
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45
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Bouteiller L, van der Schoot P. Probing Weak Intermolecular Interactions in Self-Assembled Nanotubes. J Am Chem Soc 2012; 134:1363-6. [DOI: 10.1021/ja210706v] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Laurent Bouteiller
- Chimie des
Polymères,
UMR 7610, UPMC Univ Paris 06, F-75005 Paris,
France
- Chimie des Polymères,
UMR 7610, CNRS, F-75005 Paris, France
| | - Paul van der Schoot
- Group Theory of Polymers and Soft
Matter, Technische Universiteit Eindhoven, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
- Instituut voor Theoretische
Fysica, Universiteit Utrecht, Leuvenlaan
4, 3584 CE Utrecht, The Netherlands
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46
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Tharcis M, Breiner T, Belleney J, Boué F, Bouteiller L. Hydrogen bonded supramolecular polymers in protic solvents: role of multitopicity. Polym Chem 2012. [DOI: 10.1039/c2py20287e] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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47
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Ovens JS, Truong KN, Leznoff DB. Structural organization and dimensionality at the hands of weak intermolecular Au⋯Au, Au⋯X and X⋯X (X = Cl, Br, I) interactions. Dalton Trans 2012; 41:1345-51. [DOI: 10.1039/c1dt11741f] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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