1
|
Huysecom AS, Glorieux C, Thoen J, Thielemans W, Fustin CA, Moldenaers P, Cardinaels R. Phase behavior of medium-length hydrophobically associating PEO-PPO multiblock copolymers in aqueous media. J Colloid Interface Sci 2023; 641:521-538. [PMID: 36948106 DOI: 10.1016/j.jcis.2023.03.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 02/21/2023] [Accepted: 03/02/2023] [Indexed: 03/09/2023]
Abstract
HYPOTHESIS The micellization of block copolymers of poly(ethylene oxide) (PEO) and poly(propylene oxide) (PPO) is driven by the dehydration of PPO at elevated temperatures. At low concentrations, a viscous solution of isolated micelles is obtained, whereas at higher concentrations, crowding of micelles results in an elastic gel. Alternating PEO-PPO multiblock copolymers are expected to exhibit different phase behavior, with altered phase boundaries and thermodynamics, as compared to PEO-PPO-PEO triblock copolymers (Pluronics®) with equal hydrophobicity, thereby proving the pivotal role of copolymer architecture and molecular weight. EXPERIMENTS Multiple characterization techniques were used to map the phase behavior as a function of temperature and concentration of PEO-PPO multiblock copolymers (ExpertGel®) in aqueous solution. These techniques include shear rheology, differential and adiabatic scanning calorimetry, isothermal titration calorimetry and light transmittance. The micellar size and topology were studied by dynamic light scattering. FINDINGS Multiblocks have lower transition temperatures and higher thermodynamic driving forces for micellization as compared to triblocks due to the presence of more than one PPO block per chain. With increasing concentration, the multiblock copolymers in solution gradually evolve into a viscoelastic network formed by soluble bridges in between micellar nodes, whereas hairy triblock micelles jam into liquid crystalline phases resembling an elastic colloidal crystal.
Collapse
Affiliation(s)
- An-Sofie Huysecom
- Soft Matter, Rheology and Technology, Department of Chemical Engineering, KU Leuven, Celestijnenlaan 200J, 3001 Leuven, Belgium.
| | - Christ Glorieux
- Soft Matter and Biophysics, Department of Physics and Astronomy, KU Leuven, Celestijnenlaan 200D, 3001 Leuven, Belgium.
| | - Jan Thoen
- Soft Matter and Biophysics, Department of Physics and Astronomy, KU Leuven, Celestijnenlaan 200D, 3001 Leuven, Belgium.
| | - Wim Thielemans
- Sustainable Materials Lab, Department of Chemical Engineering, KU Leuven, Campus Kulak Kortrijk, Etienne Sabbelaan 53, 8500 Kortrijk, Belgium.
| | - Charles-André Fustin
- Bio and Soft Matter, Institute of Condensed Matter and Nanosciences, UC Louvain, Place Pasteur 1, 1348 Louvain-la-Neuve, Belgium.
| | - Paula Moldenaers
- Soft Matter, Rheology and Technology, Department of Chemical Engineering, KU Leuven, Celestijnenlaan 200J, 3001 Leuven, Belgium.
| | - Ruth Cardinaels
- Soft Matter, Rheology and Technology, Department of Chemical Engineering, KU Leuven, Celestijnenlaan 200J, 3001 Leuven, Belgium; Processing and Performance of Materials, Department of Mechanical Engineering, TU Eindhoven, Box 513, 5600 MB Eindhoven, the Netherlands.
| |
Collapse
|
2
|
Affiliation(s)
- Hui Yang
- Institute of Condensed Matter and Nanosciences (IMCN), Bio and Soft Matter Division (BSMA), Université catholique de Louvain, Place L. Pasteur 1 & Croix du Sud 1, Louvain-la-Neuve B-1348, Belgium
| | - Evelyne van Ruymbeke
- Institute of Condensed Matter and Nanosciences (IMCN), Bio and Soft Matter Division (BSMA), Université catholique de Louvain, Place L. Pasteur 1 & Croix du Sud 1, Louvain-la-Neuve B-1348, Belgium
| | - Charles-André Fustin
- Institute of Condensed Matter and Nanosciences (IMCN), Bio and Soft Matter Division (BSMA), Université catholique de Louvain, Place L. Pasteur 1 & Croix du Sud 1, Louvain-la-Neuve B-1348, Belgium
| |
Collapse
|
3
|
Jiang L, Griffiths P, Balouet J, Faure T, Lyons R, Fustin CA, Baeza GP. Magneto-Responsive Nanocomposites with a Metal–Ligand Supramolecular Matrix. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c00256] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Liuyin Jiang
- Univ Lyon, INSA Lyon, UCBL, CNRS, MATEIS, UMR5510, 69621 Villeurbanne, France
| | - Pablo Griffiths
- Univ Lyon, INSA Lyon, UCBL, CNRS, MATEIS, UMR5510, 69621 Villeurbanne, France
| | - Julie Balouet
- Univ Lyon, INSA Lyon, UCBL, CNRS, MATEIS, UMR5510, 69621 Villeurbanne, France
| | - Titouan Faure
- Univ Lyon, INSA Lyon, UCBL, CNRS, MATEIS, UMR5510, 69621 Villeurbanne, France
| | - Rowanne Lyons
- Institute of Condensed Matter and Nanosciences (IMCN), Bio and Soft Matter Division (BSMA), Université Catholique de Louvain, Place Louis Pasteur 1, B-1348 Louvain-la-Neuve, Belgium
| | - Charles-André Fustin
- Institute of Condensed Matter and Nanosciences (IMCN), Bio and Soft Matter Division (BSMA), Université Catholique de Louvain, Place Louis Pasteur 1, B-1348 Louvain-la-Neuve, Belgium
| | - Guilhem P. Baeza
- Univ Lyon, INSA Lyon, UCBL, CNRS, MATEIS, UMR5510, 69621 Villeurbanne, France
| |
Collapse
|
4
|
Ghiassinejad S, Mortensen K, Rostamitabar M, Malineni J, Fustin CA, van Ruymbeke E. Dynamics and Structure of Metallo-supramolecular Polymers Based on Short Telechelic Precursors. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c00373] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Sina Ghiassinejad
- Bio and Soft Matter Division, Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, 1348 Louvain-la-Neuve, Belgium
| | - Kell Mortensen
- Niels Bohr Institute, University of Copenhagen, 1165 Copenhagen, Denmark
| | - Matin Rostamitabar
- Bio and Soft Matter Division, Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, 1348 Louvain-la-Neuve, Belgium
| | - Jagadeesh Malineni
- Bio and Soft Matter Division, Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, 1348 Louvain-la-Neuve, Belgium
| | - Charles-André Fustin
- Bio and Soft Matter Division, Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, 1348 Louvain-la-Neuve, Belgium
| | - Evelyne van Ruymbeke
- Bio and Soft Matter Division, Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, 1348 Louvain-la-Neuve, Belgium
| |
Collapse
|
5
|
Sluysmans D, Lussis P, Fustin CA, Bertocco A, Leigh DA, Duwez AS. Real-Time Fluctuations in Single-Molecule Rotaxane Experiments Reveal an Intermediate Weak Binding State during Shuttling. J Am Chem Soc 2021; 143:2348-2352. [PMID: 33417442 DOI: 10.1021/jacs.0c12161] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
We report on the use of atomic force microscopy (AFM) to identify and characterize an intermediate state in macrocycle shuttling in a hydrogen bonded amide-based molecular shuttle. The [2]rotaxane consists of a benzylic amide macrocycle mechanically locked onto a thread that bears both fumaramide and succinic amide-ester sites, each of which can bind to the macrocycle through up to four intercomponent hydrogen bonds. Using AFM-based single-molecule force spectroscopy, we mechanically triggered the translocation of the ring between the two principal binding sites ("stations") on the axle. Equilibrium fluctuations reveal another interacting site involving the two oxygen atoms in the middle of the thread. We characterized the ring occupancy distribution over time, which confirms the intermediate in both shuttling directions. The study provides evidence of weak hydrogen bonds that are difficult to detect using other methods and shows how the composition of the thread can significantly influence the shuttling dynamics by slowing down the ring motion between the principal binding sites. More generally, the study illustrates the utility that single-molecule experiments, such as force spectroscopy, can offer for elucidating the structure and dynamics of synthetic molecular machines.
Collapse
Affiliation(s)
- Damien Sluysmans
- UR MolSys, University of Liege, Sart-Tilman, B6a, 4000 Liege, Belgium
| | - Perrine Lussis
- UR MolSys, University of Liege, Sart-Tilman, B6a, 4000 Liege, Belgium
| | - Charles-André Fustin
- Bio and Soft Matter Division (BSMA), Institute of Condensed Matter and Nanosciences (IMCN), Université catholique de Louvain, Place L. Pasteur 1 and Croix du Sud 1, Louvain-la-Neuve B-1348, Belgium
| | - Andrea Bertocco
- Department of Chemistry, University of Manchester, Manchester M13 9PL, United Kingdom
| | - David A Leigh
- Department of Chemistry, University of Manchester, Manchester M13 9PL, United Kingdom
| | - Anne-Sophie Duwez
- UR MolSys, University of Liege, Sart-Tilman, B6a, 4000 Liege, Belgium
| |
Collapse
|
6
|
Sharma AK, Malineni J, Box S, Ghiassinejad S, van Ruymbeke E, Fustin CA. Synthetic platform for mono-functionalised tridentate macrocycles as key precursors of mechanically-linked macromolecular systems. Org Chem Front 2021. [DOI: 10.1039/d1qo00245g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Macrocycles bearing a variety of functional groups give access to a wide range of synthetic methods for further derivatisation or preparation of more complex structures such as mechanically interlocked molecules or polymeric materials.
Collapse
Affiliation(s)
- Atul Kumar Sharma
- Institute of Condensed Matter and Nanosciences (IMCN)
- Bio- and Soft Matter Division (BSMA)
- Université catholique de Louvain
- Louvain-la-Neuve
- Belgium
| | - Jagadeesh Malineni
- Institute of Condensed Matter and Nanosciences (IMCN)
- Bio- and Soft Matter Division (BSMA)
- Université catholique de Louvain
- Louvain-la-Neuve
- Belgium
| | - Simon Box
- Institute of Condensed Matter and Nanosciences (IMCN)
- Bio- and Soft Matter Division (BSMA)
- Université catholique de Louvain
- Louvain-la-Neuve
- Belgium
| | - Sina Ghiassinejad
- Institute of Condensed Matter and Nanosciences (IMCN)
- Bio- and Soft Matter Division (BSMA)
- Université catholique de Louvain
- Louvain-la-Neuve
- Belgium
| | - Evelyne van Ruymbeke
- Institute of Condensed Matter and Nanosciences (IMCN)
- Bio- and Soft Matter Division (BSMA)
- Université catholique de Louvain
- Louvain-la-Neuve
- Belgium
| | - Charles-André Fustin
- Institute of Condensed Matter and Nanosciences (IMCN)
- Bio- and Soft Matter Division (BSMA)
- Université catholique de Louvain
- Louvain-la-Neuve
- Belgium
| |
Collapse
|
7
|
Liu CL, Bobylev EO, Fu Y, Poole DA, Robeyns K, Fustin CA, Garcia Y, Reek JNH, Singleton ML. Balancing Ligand Flexibility versus Rigidity for the Stepwise Self-Assembly of M 12 L 24 via M 6 L 12 Metal-Organic Cages. Chemistry 2020; 26:11960-11965. [PMID: 32378754 DOI: 10.1002/chem.202001399] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Indexed: 11/11/2022]
Abstract
Non-covalent interactions are important for directing protein folding across multiple intermediates and can even provide access to multiple stable structures with different properties and functions. Herein, we describe an approach for mimicking this behavior in the self-assembly of metal-organic cages. Two ligands, the bend angles of which are controlled by non-covalent interactions and one ligand lacking the above-mentioned interactions, were synthesized and used for self-assembly with Pd2+ . As these weak interactions are easily broken, the bend angles have a controlled flexibility giving access to M2 (L1)4 , M6 (L2)12 , and M12 (L2)24 cages. By controlling the self-assembly conditions this process can be directed in a stepwise fashion. Additionally, the multiple endohedral hydrogen-bonding sites on the ligand were found to play a role in the binding and discrimination of neutral guests.
Collapse
Affiliation(s)
- Cui-Lian Liu
- Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, Place Louis Pasteur 1, Louvain-la-Neuve, 1348, Belgium
| | - Eduard O Bobylev
- Van''t Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, Amsterdam, 1098 XH, The Netherlands
| | - Yang Fu
- Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, Place Louis Pasteur 1, Louvain-la-Neuve, 1348, Belgium
| | - David A Poole
- Van''t Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, Amsterdam, 1098 XH, The Netherlands
| | - Koen Robeyns
- Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, Place Louis Pasteur 1, Louvain-la-Neuve, 1348, Belgium
| | - Charles-André Fustin
- Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, Place Louis Pasteur 1, Louvain-la-Neuve, 1348, Belgium
| | - Yann Garcia
- Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, Place Louis Pasteur 1, Louvain-la-Neuve, 1348, Belgium
| | - Joost N H Reek
- Van''t Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, Amsterdam, 1098 XH, The Netherlands
| | - Michael L Singleton
- Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, Place Louis Pasteur 1, Louvain-la-Neuve, 1348, Belgium
| |
Collapse
|
8
|
Yang H, Ghiassinejad S, van Ruymbeke E, Fustin CA. Tunable Interpenetrating Polymer Network Hydrogels Based on Dynamic Covalent Bonds and Metal–Ligand Bonds. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c00494] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Hui Yang
- Bio and Soft Matter Division (BSMA), Institute of Condensed Matter and Nanosciences (IMCN), Université catholique de Louvain, Place L. Pasteur 1 & Croix du Sud 1, B-1348 Louvain-la-Neuve, Belgium
| | - Sina Ghiassinejad
- Bio and Soft Matter Division (BSMA), Institute of Condensed Matter and Nanosciences (IMCN), Université catholique de Louvain, Place L. Pasteur 1 & Croix du Sud 1, B-1348 Louvain-la-Neuve, Belgium
| | - Evelyne van Ruymbeke
- Bio and Soft Matter Division (BSMA), Institute of Condensed Matter and Nanosciences (IMCN), Université catholique de Louvain, Place L. Pasteur 1 & Croix du Sud 1, B-1348 Louvain-la-Neuve, Belgium
| | - Charles-André Fustin
- Bio and Soft Matter Division (BSMA), Institute of Condensed Matter and Nanosciences (IMCN), Université catholique de Louvain, Place L. Pasteur 1 & Croix du Sud 1, B-1348 Louvain-la-Neuve, Belgium
| |
Collapse
|
9
|
Falco G, Griffiths P, Coutouly C, Fustin CA, Baeza GP. Supramolecular Superparamagnetic Nanocomposites Based on a Magnetite-Filled Unentangled Terpyridine-Functionalized Polymer. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c00182] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Guillaume Falco
- Univ Lyon, INSA-Lyon, CNRS, MATEIS, UMR 5510, 7 Avenue Jean Capelle, F-69621 Villeurbanne, France
| | - Pablo Griffiths
- Univ Lyon, INSA-Lyon, CNRS, MATEIS, UMR 5510, 7 Avenue Jean Capelle, F-69621 Villeurbanne, France
| | - Clément Coutouly
- Institute of Condensed Matter and Nanosciences (IMCN), Bio and Soft Matter Division (BSMA), Université catholique de Louvain, Place Louis
Pasteur 1, B-1348 Louvain-la-Neuve, Belgium
| | - Charles-André Fustin
- Institute of Condensed Matter and Nanosciences (IMCN), Bio and Soft Matter Division (BSMA), Université catholique de Louvain, Place Louis
Pasteur 1, B-1348 Louvain-la-Neuve, Belgium
| | - Guilhem P. Baeza
- Univ Lyon, INSA-Lyon, CNRS, MATEIS, UMR 5510, 7 Avenue Jean Capelle, F-69621 Villeurbanne, France
| |
Collapse
|
10
|
Yan ZC, Stadler FJ, Guillet P, Mugemana C, Fustin CA, Gohy JF, Bailly C. Linear and Nonlinear Dynamic Behavior of Polymer Micellar Assemblies Connected by Metallo-Supramolecular Interactions. Polymers (Basel) 2019; 11:E1532. [PMID: 31546998 PMCID: PMC6835675 DOI: 10.3390/polym11101532] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Revised: 09/09/2019] [Accepted: 09/15/2019] [Indexed: 02/06/2023] Open
Abstract
The linear and nonlinear rheology of associative colloidal polymer assemblies with metallo-supramolecular interactions is herein studied. Polystyrene-b-poly(tert-butylacrylate) with a terpyridine ligand at the end of the acrylate block is self-assembled into micelles in ethanol, a selective solvent for the latter block, and supramolecularly connected by complexation to divalent metal ions. The dependence of the system elasticity on polymer concentration can be semi-quantitatively understood by a geometrical packing model. For strongly associated (Ni2+, Fe2+) and sufficiently concentrated systems (15 w/v%), any given ligand end-group has a virtually 100% probability of being located in an overlapping hairy region between two micelles. By assuming a 50% probability of intermicellar crosslinks being formed, an excellent prediction of the plateau modulus was achieved and compared with the experimental results. For strongly associated but somewhat more dilute systems (12 w/v%) that still have significant overlap between hairy regions, the experimental modulus was lower than the predicted value, as the effective number of crosslinkers was further reduced along with possible density heterogeneities. The reversible destruction of the network by shear forces can be observed from the strain dependence of the storage and loss moduli. The storage moduli of the Ni2+ and Zn2+ systems at a lower concentration (12 w/v%) showed a rarely observed feature (i.e., a peak at the transition from linear to nonlinear regime). This peak disappeared at a higher concentration (15 w/v%). This behavior can be rationalized based on concentration-dependent network stretchability.
Collapse
Affiliation(s)
- Zhi-Chao Yan
- Shenzhen Key Laboratory of Polymer Science and Technology, Guangdong Research Center for Interfacial Engineering of Functional Materials, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, China.
| | - Florian J Stadler
- Shenzhen Key Laboratory of Polymer Science and Technology, Guangdong Research Center for Interfacial Engineering of Functional Materials, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, China.
- Institute of Condensed Matter and Nanosciences (IMCN), Bio and Soft Matter Division (BSMA), Université Catholique de Louvain, Place Pasteur 1, B-1348 Louvain-la-Neuve, Belgium.
| | - Pierre Guillet
- Institute of Condensed Matter and Nanosciences (IMCN), Bio and Soft Matter Division (BSMA), Université Catholique de Louvain, Place Pasteur 1, B-1348 Louvain-la-Neuve, Belgium.
- Equipe Chimie Bioorganique et Systèmes Amphiphiles, Institut des Biomolécules Max Mousseron (UMR 5247 UM-CNRS-ENSCM) & Avignon University, 301 rue Baruch de Spinoza, 84916 Avignon CEDEX 9, France.
| | - Clément Mugemana
- Institute of Condensed Matter and Nanosciences (IMCN), Bio and Soft Matter Division (BSMA), Université Catholique de Louvain, Place Pasteur 1, B-1348 Louvain-la-Neuve, Belgium.
- Luxembourg Institute of Science and Technology (LIST), 5 Avenue des Hauts-Fourneaux, 4362 Esch-sur-Alzette, Luxembourg.
| | - Charles-André Fustin
- Institute of Condensed Matter and Nanosciences (IMCN), Bio and Soft Matter Division (BSMA), Université Catholique de Louvain, Place Pasteur 1, B-1348 Louvain-la-Neuve, Belgium.
| | - Jean-François Gohy
- Institute of Condensed Matter and Nanosciences (IMCN), Bio and Soft Matter Division (BSMA), Université Catholique de Louvain, Place Pasteur 1, B-1348 Louvain-la-Neuve, Belgium.
| | - Christian Bailly
- Institute of Condensed Matter and Nanosciences (IMCN), Bio and Soft Matter Division (BSMA), Université Catholique de Louvain, Place Croix du Sud 1, B-1348 Louvain-la-Neuve, Belgium.
| |
Collapse
|
11
|
Vander Straeten A, Bratek-Skicki A, Jonas AM, Fustin CA, Dupont-Gillain C. Integrating Proteins in Layer-by-Layer Assemblies Independently of their Electrical Charge. ACS Nano 2018; 12:8372-8381. [PMID: 29965727 DOI: 10.1021/acsnano.8b03710] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Layer-by-layer (LbL) assembly is an attractive method for protein immobilization at interfaces, a much wanted step for biotechnologies and biomedicine. Integrating proteins in LbL thin films is however very challenging due to their low conformational entropy, heterogeneous spatial distribution of charges, and polyampholyte nature. Protein-polyelectrolyte complexes (PPCs) are promising building blocks for LbL construction owing to their standardized charge and polyelectrolyte (PE) corona. In this work, lysozyme was complexed with poly(styrenesulfonate) (PSS) at different ionic strengths and pH values. The PPCs size and electrical properties were investigated, and the forces driving complexation were elucidated, in the light of computations of polyelectrolyte conformation, with a view to further unravel LbL construction mechanisms. Quartz crystal microbalance and atomic force microscopy were used to monitor the integration of PPCs compared to the one of bare protein molecules in LbL assemblies, and colorimetric assays were performed to determine the protein amount in the thin films. Layers built with PPCs show higher protein contents and hydration levels. Very importantly, the results also show that LbL construction with PPCs mainly relies on standard PE-PE interactions, independent of the charge state of the protein, in contrast to classical bare protein assembly with PEs. This considerably simplifies the incorporation of proteins in multilayers, which will be beneficial for biosensing, heterogeneous biocatalysis, biotechnologies, and medical applications that require active proteins at interfaces.
Collapse
Affiliation(s)
- Aurélien Vander Straeten
- Institute of Condensed Matter and Nanosciences , Université catholique de Louvain , Place Louis Pasteur, 1 bte L4.01.10 , B-1348 Louvain-la-Neuve , Belgium
| | - Anna Bratek-Skicki
- Institute of Condensed Matter and Nanosciences , Université catholique de Louvain , Place Louis Pasteur, 1 bte L4.01.10 , B-1348 Louvain-la-Neuve , Belgium
| | - Alain M Jonas
- Institute of Condensed Matter and Nanosciences , Université catholique de Louvain , Place Louis Pasteur, 1 bte L4.01.10 , B-1348 Louvain-la-Neuve , Belgium
| | - Charles-André Fustin
- Institute of Condensed Matter and Nanosciences , Université catholique de Louvain , Place Louis Pasteur, 1 bte L4.01.10 , B-1348 Louvain-la-Neuve , Belgium
| | - Christine Dupont-Gillain
- Institute of Condensed Matter and Nanosciences , Université catholique de Louvain , Place Louis Pasteur, 1 bte L4.01.10 , B-1348 Louvain-la-Neuve , Belgium
| |
Collapse
|
12
|
Morelle J, Sow A, Fustin CA, Fillée C, Garcia-Lopez E, Lindholm B, Goffin E, Vandemaele F, Rippe B, Öberg CM, Devuyst O. Mechanisms of Crystalloid versus Colloid Osmosis across the Peritoneal Membrane. J Am Soc Nephrol 2018; 29:1875-1886. [PMID: 29844208 DOI: 10.1681/asn.2017080828] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Accepted: 04/25/2018] [Indexed: 12/27/2022] Open
Abstract
Background Osmosis drives transcapillary ultrafiltration and water removal in patients treated with peritoneal dialysis. Crystalloid osmosis, typically induced by glucose, relies on dialysate tonicity and occurs through endothelial aquaporin-1 water channels and interendothelial clefts. In contrast, the mechanisms mediating water flow driven by colloidal agents, such as icodextrin, and combinations of osmotic agents have not been evaluated.Methods We used experimental models of peritoneal dialysis in mouse and biophysical studies combined with mathematical modeling to evaluate the mechanisms of colloid versus crystalloid osmosis across the peritoneal membrane and to investigate the pathways mediating water flow generated by the glucose polymer icodextrin.ResultsIn silico modeling and in vivo studies showed that deletion of aquaporin-1 did not influence osmotic water transport induced by icodextrin but did affect that induced by crystalloid agents. Water flow induced by icodextrin was dependent upon the presence of large, colloidal fractions, with a reflection coefficient close to unity, a low diffusion capacity, and a minimal effect on dialysate osmolality. Combining crystalloid and colloid osmotic agents in the same dialysis solution strikingly enhanced water and sodium transport across the peritoneal membrane, improving ultrafiltration efficiency over that obtained with either type of agent alone.Conclusions These data cast light on the molecular mechanisms involved in colloid versus crystalloid osmosis and characterize novel osmotic agents. Dialysis solutions combining crystalloid and colloid particles may help restore fluid balance in patients treated with peritoneal dialysis.
Collapse
Affiliation(s)
- Johann Morelle
- Division of Nephrology and .,Institut de Recherche Expérimentale et Clinique, Université Catholique de Louvain, Brussels, Belgium
| | - Amadou Sow
- Institut de Recherche Expérimentale et Clinique, Université Catholique de Louvain, Brussels, Belgium
| | - Charles-André Fustin
- Bio and Soft Matter Division (BSMA), Institute of Condensed Mater and Nanosciences, Université Catholique de Louvain, Louvain-la-Neuve, Belgium
| | - Catherine Fillée
- Department of Clinical Biochemistry, Cliniques Universitaires Saint-Luc, Brussels, Belgium
| | - Elvia Garcia-Lopez
- Division of Renal Medicine and Baxter Novum, Department of Clinical Science, Intervention and Technology, Karolinska Institute, Karolinska University Hospital Huddinge, Stockholm, Sweden
| | - Bengt Lindholm
- Division of Renal Medicine and Baxter Novum, Department of Clinical Science, Intervention and Technology, Karolinska Institute, Karolinska University Hospital Huddinge, Stockholm, Sweden
| | - Eric Goffin
- Division of Nephrology and.,Institut de Recherche Expérimentale et Clinique, Université Catholique de Louvain, Brussels, Belgium
| | | | - Bengt Rippe
- Department of Nephrology, Lund University, Skane University Hospital, Lund, Sweden; and
| | - Carl M Öberg
- Department of Nephrology, Lund University, Skane University Hospital, Lund, Sweden; and
| | - Olivier Devuyst
- Division of Nephrology and .,Institut de Recherche Expérimentale et Clinique, Université Catholique de Louvain, Brussels, Belgium.,Institute of Physiology, University of Zurich, Zurich, Switzerland
| |
Collapse
|
13
|
Ibrahimova V, Denisov SA, Vanvarenberg K, Verwilst P, Préat V, Guigner JM, McClenaghan ND, Lecommandoux S, Fustin CA. Photosensitizer localization in amphiphilic block copolymers controls photodynamic therapy efficacy. Nanoscale 2017; 9:11180-11186. [PMID: 28749509 DOI: 10.1039/c7nr04403h] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Localization of the photosensitizer conjugation site in amphiphilic block copolymers is shown to have a great impact on photodynamic therapy efficiency. To this end, an asymmetric multifunctional derivative of the azadipyrromethene boron difluoride chelate (aza-BODIPY) was synthesized and inserted at specific locations in polypeptide-based rod-coil amphiphilic block copolymers. A study of the photophysical properties of the vesicle nanocarriers, obtained by self-assembly of these copolymers, as well as in vitro tests on two cancer cell lines were performed. This study aims at providing guidelines for the optimization of the synthetic design of therapeutic nanomedicines with minimal amounts of photosensitive molecules.
Collapse
Affiliation(s)
- Vusala Ibrahimova
- Institute of Condensed Matter and Nanosciences (IMCN), Bio and Soft Matter division (BSMA), Université catholique de Louvain, 1348 Louvain-la-Neuve, Belgium.
| | | | | | | | | | | | | | | | | |
Collapse
|
14
|
Zhuge F, Brassinne J, Fustin CA, van Ruymbeke E, Gohy JF. Synthesis and Rheology of Bulk Metallo-Supramolecular Polymers from Telechelic Entangled Precursors. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b00646] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Flanco Zhuge
- Institute of Condensed Matter and Nanosciences (IMCN), Bio and Soft Matter Division (BSMA), Université catholique de Louvain, Place L. Pasteur 1 & Croix du Sud 1, B-1348 Louvain-la-Neuve, Belgium
| | - Jérémy Brassinne
- Institute of Condensed Matter and Nanosciences (IMCN), Bio and Soft Matter Division (BSMA), Université catholique de Louvain, Place L. Pasteur 1 & Croix du Sud 1, B-1348 Louvain-la-Neuve, Belgium
| | - Charles-André Fustin
- Institute of Condensed Matter and Nanosciences (IMCN), Bio and Soft Matter Division (BSMA), Université catholique de Louvain, Place L. Pasteur 1 & Croix du Sud 1, B-1348 Louvain-la-Neuve, Belgium
| | - Evelyne van Ruymbeke
- Institute of Condensed Matter and Nanosciences (IMCN), Bio and Soft Matter Division (BSMA), Université catholique de Louvain, Place L. Pasteur 1 & Croix du Sud 1, B-1348 Louvain-la-Neuve, Belgium
| | - Jean-François Gohy
- Institute of Condensed Matter and Nanosciences (IMCN), Bio and Soft Matter Division (BSMA), Université catholique de Louvain, Place L. Pasteur 1 & Croix du Sud 1, B-1348 Louvain-la-Neuve, Belgium
| |
Collapse
|
15
|
Ahamed BN, Van Velthem P, Robeyns K, Fustin CA. Influence of a Single Catenane on the Solid-State Properties of Mechanically Linked Polymers. ACS Macro Lett 2017; 6:468-472. [PMID: 35610870 DOI: 10.1021/acsmacrolett.7b00204] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We report on mechanically linked polymers containing a single catenane in the middle of the chain. These polymers were synthesized by a simple procedure consisting in "clicking" polymer chains onto a functionalized palladium-templated [2]catenane, allowing the preparation of a variety of mechanically linked polymers. The flexibility of the catenane junction was modulated by removing the Pd ion from the catenane to unlock the macrocycles and increase their mobility. We show that this mobility change has a strong impact on the solid-state properties of the polymers. This is illustrated by studying the glass transition temperature of polystyrene-based polymers and the crystallization behavior of poly(ethylene oxide)-based polymers. Our study proves that a change of flexibility of a single catenane inserted into a polymer chain drastically influences the polymer behavior in the solid state.
Collapse
Affiliation(s)
- B. Nisar Ahamed
- Institute of Condensed Matter and Nanosciences (IMCN), Bio- and Soft
Matter Division (BSMA), and ‡Institute of Condensed Matter and Nanosciences (IMCN),
Molecules Structure and Reactivity Division (MOST), Université catholique de Louvain, Place Pasteur
1, 1348, Louvain-la-Neuve, Belgium
| | - Pascal Van Velthem
- Institute of Condensed Matter and Nanosciences (IMCN), Bio- and Soft
Matter Division (BSMA), and ‡Institute of Condensed Matter and Nanosciences (IMCN),
Molecules Structure and Reactivity Division (MOST), Université catholique de Louvain, Place Pasteur
1, 1348, Louvain-la-Neuve, Belgium
| | - Koen Robeyns
- Institute of Condensed Matter and Nanosciences (IMCN), Bio- and Soft
Matter Division (BSMA), and ‡Institute of Condensed Matter and Nanosciences (IMCN),
Molecules Structure and Reactivity Division (MOST), Université catholique de Louvain, Place Pasteur
1, 1348, Louvain-la-Neuve, Belgium
| | - Charles-André Fustin
- Institute of Condensed Matter and Nanosciences (IMCN), Bio- and Soft
Matter Division (BSMA), and ‡Institute of Condensed Matter and Nanosciences (IMCN),
Molecules Structure and Reactivity Division (MOST), Université catholique de Louvain, Place Pasteur
1, 1348, Louvain-la-Neuve, Belgium
| |
Collapse
|
16
|
Alaimo D, Grignard B, Kuppan C, Adriaensen Y, Genet MJ, Dupont-Gillain C, Gohy JF, Fustin CA, Detrembleur C, Jérôme C. A photocleavable stabilizer for the preparation of PHEMA nanogels by dispersion polymerization in supercritical carbon dioxide. Polym Chem 2017. [DOI: 10.1039/c6py01633b] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Synthesis of PHEMA nanogels stable in water by a scCO2 process.
Collapse
|
17
|
Brassinne J, Fustin CA, Gohy JF. Control over the assembly and rheology of supramolecular networks via multi-responsive double hydrophilic copolymers. Polym Chem 2017. [DOI: 10.1039/c6py02143c] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
An orthogonal control over network formation and dynamics is achieved in metallo-supramolecular micellar gels via multi-responsive double hydrophilic copolymers.
Collapse
Affiliation(s)
- Jérémy Brassinne
- Institute of Condensed Matter and Nanosciences (IMCN)
- Division of Bio and Soft Matter (BSMA)
- Université catholique de Louvain
- B-1348 Louvain-la-Neuve
- Belgium
| | - Charles-André Fustin
- Institute of Condensed Matter and Nanosciences (IMCN)
- Division of Bio and Soft Matter (BSMA)
- Université catholique de Louvain
- B-1348 Louvain-la-Neuve
- Belgium
| | - Jean-François Gohy
- Institute of Condensed Matter and Nanosciences (IMCN)
- Division of Bio and Soft Matter (BSMA)
- Université catholique de Louvain
- B-1348 Louvain-la-Neuve
- Belgium
| |
Collapse
|
18
|
Abstract
One of the first examples of supramolecular gels presenting independent dual dynamics is built through a combination of hydrophobic and metal-ligand interactions. The associating building block consists in a water-soluble linear polymer terminated by a short hydrophobic sticker at one end, and a coordinating moiety at the other end. The distinct supramolecular nature of these noninterfering binding motifs allows the dynamics of the hydrogels to be finely tuned in an orthogonal fashion by the application of specific stimuli. Precisely, the solvent-induced plasticization of the hydrophobic associations and the acid-promoted dissociation of the metal-ligand complexes are used to control the network dynamics. By opposition to classically encountered binary gel-sol responses, we demonstrate that the stimuli-induced transition in material properties can be gradual, provided that the material structure is well designed and strong enough.
Collapse
Affiliation(s)
- Jérémy Brassinne
- Institute of Condensed Matter
and Nanosciences (IMCN), Division of Bio and Soft Matter (BSMA), Université catholique de Louvain, Place L. Pasteur 1, 1348 Louvain-la-Neuve, Belgium
| | - Jean-François Gohy
- Institute of Condensed Matter
and Nanosciences (IMCN), Division of Bio and Soft Matter (BSMA), Université catholique de Louvain, Place L. Pasteur 1, 1348 Louvain-la-Neuve, Belgium
| | - Charles-André Fustin
- Institute of Condensed Matter
and Nanosciences (IMCN), Division of Bio and Soft Matter (BSMA), Université catholique de Louvain, Place L. Pasteur 1, 1348 Louvain-la-Neuve, Belgium
| |
Collapse
|
19
|
Abstract
An original strategy for the synthesis of diblock copolymers where the blocks are linked by a catenane junction is described. Starting from a functionalized catenane precursor, our strategy enables the preparation of a variety of copolymers by different techniques such as ROP, ATRP and CuAAC click reaction.
Collapse
Affiliation(s)
- B Nisar Ahamed
- Institute of Condensed Matter and Nanosciences (IMCN), Bio- and Soft Matter division (BSMA), Université catholique de Louvain, Place Pasteur 1, 1348, Louvain-la-Neuve, Belgium.
| | - Roland Duchêne
- Institute of Condensed Matter and Nanosciences (IMCN), Bio- and Soft Matter division (BSMA), Université catholique de Louvain, Place Pasteur 1, 1348, Louvain-la-Neuve, Belgium.
| | - Koen Robeyns
- IMCN, Molecules Solids and Reactivity division (MOST), Université catholique de Louvain, Place Pasteur 1, 1348, Louvain-la-Neuve, Belgium
| | - Charles-André Fustin
- Institute of Condensed Matter and Nanosciences (IMCN), Bio- and Soft Matter division (BSMA), Université catholique de Louvain, Place Pasteur 1, 1348, Louvain-la-Neuve, Belgium.
| |
Collapse
|
20
|
Goldansaz H, Fustin CA, Wübbenhorst M, van Ruymbeke E. How Supramolecular Assemblies Control Dynamics of Associative Polymers: Toward a General Picture. Macromolecules 2016. [DOI: 10.1021/acs.macromol.5b01535] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | - Charles-André Fustin
- Bio
and Soft Matter Division (BSMA), Institut de la Matière Condensée
et des Nanosciences (IMCN), Université catholique de Louvain, Place Pasteur 1, 1348 Louvain-la-Neuve, Belgium
| | - Michael Wübbenhorst
- Soft
Matter and Biophysics, Department of Physics and Astronomy, KU Leuven, Celestijnenlaan 200d, 3001 Leuven, Belgium
| | | |
Collapse
|
21
|
Nisar Ahamed B, Duchêne R, Robeyns K, Fustin CA. Correction: Catenane-based mechanically-linked block copolymers. Chem Commun (Camb) 2016; 52:3254. [DOI: 10.1039/c6cc90059c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Correction for ‘Catenane-based mechanically-linked block copolymers’ by B. Nisar Ahamed et al., Chem. Commun., 2016, DOI: 10.1039/c5cc09775d.
Collapse
Affiliation(s)
- B. Nisar Ahamed
- Institute of Condensed Matter and Nanosciences (IMCN)
- Bio- and Soft Matter division (BSMA)
- Université catholique de Louvain
- Louvain-la-Neuve
- Belgium
| | - Roland Duchêne
- Institute of Condensed Matter and Nanosciences (IMCN)
- Bio- and Soft Matter division (BSMA)
- Université catholique de Louvain
- Louvain-la-Neuve
- Belgium
| | - Koen Robeyns
- IMCN
- Molecules Solids and Reactivity division (MOST)
- Université catholique de Louvain
- Louvain-la-Neuve
- Belgium
| | - Charles-André Fustin
- Institute of Condensed Matter and Nanosciences (IMCN)
- Bio- and Soft Matter division (BSMA)
- Université catholique de Louvain
- Louvain-la-Neuve
- Belgium
| |
Collapse
|
22
|
Brassinne J, Zhuge F, Fustin CA, Gohy JF. Precise Control over the Rheological Behavior of Associating Stimuli-Responsive Block Copolymer Gels. Gels 2015; 1:235-255. [PMID: 30674175 PMCID: PMC6318586 DOI: 10.3390/gels1020235] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2015] [Revised: 11/20/2015] [Accepted: 11/30/2015] [Indexed: 11/17/2022] Open
Abstract
"Smart" materials have considerably evolved over the last few years for specific applications. They rely on intelligent macromolecules or (supra-)molecular motifs to adapt their structure and properties in response to external triggers. Here, a supramolecular stimuli-responsive polymer gel is constructed from heterotelechelic double hydrophilic block copolymers that incorporate thermo-responsive sequences. These macromolecular building units are synthesized via a three-step controlled radical copolymerization and then hierarchically assembled to yield coordination micellar hydrogels. The dynamic mechanical properties of this particular class of materials are studied in shear flow and finely tuned via temperature changes. Notably, rheological experiments show that structurally reinforcing the micellar network nodes leads to precise tuning of the viscoelastic response and yield behavior of the material. Hence, they constitute promising candidates for specific applications, such as mechano-sensors.
Collapse
Affiliation(s)
- Jérémy Brassinne
- Institute of Condensed Matter and Nanosciences (IMCN), Bio- and Soft Matter (BSMA) Division, Université catholique de Louvain (UCL), Place L. Pasteur 1, Louvain-la-Neuve 1348, Belgium.
| | - Flanco Zhuge
- Institute of Condensed Matter and Nanosciences (IMCN), Bio- and Soft Matter (BSMA) Division, Université catholique de Louvain (UCL), Place L. Pasteur 1, Louvain-la-Neuve 1348, Belgium.
| | - Charles-André Fustin
- Institute of Condensed Matter and Nanosciences (IMCN), Bio- and Soft Matter (BSMA) Division, Université catholique de Louvain (UCL), Place L. Pasteur 1, Louvain-la-Neuve 1348, Belgium.
| | - Jean-François Gohy
- Institute of Condensed Matter and Nanosciences (IMCN), Bio- and Soft Matter (BSMA) Division, Université catholique de Louvain (UCL), Place L. Pasteur 1, Louvain-la-Neuve 1348, Belgium.
| |
Collapse
|
23
|
Vogel N, Retsch M, Fustin CA, del Campo A, Jonas U. Advances in Colloidal Assembly: The Design of Structure and Hierarchy in Two and Three Dimensions. Chem Rev 2015; 115:6265-311. [DOI: 10.1021/cr400081d] [Citation(s) in RCA: 531] [Impact Index Per Article: 59.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Nicolas Vogel
- Institute
of Particle Technology, Friedrich-Alexander-University Erlangen-Nuremberg, Cauerstrasse
4, 91058 Erlangen, Germany
- Cluster
of Excellence - Engineering of Advanced Materials, University of Erlangen-Nuremberg, 91054 Erlangen, Germany
| | - Markus Retsch
- Physical
Chemistry 1 - Polymer Systems, University of Bayreuth, Universitätsstraße
30, 95447 Bayreuth, Germany
| | - Charles-André Fustin
- Institute
of Condensed Matter and Nanosciences (IMCN), Bio- and Soft Matter
Division (BSMA), Université catholique de Louvain, Place Louis
Pasteur 1, B-1348 Louvain-la-Neuve, Belgium
| | - Aranzazu del Campo
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Ulrich Jonas
- Macromolecular
Chemistry, Cμ - The Research Center for Micro- and Nanochemistry
and Engineering, University of Siegen, Adolf-Reichwein-Strasse 2, 57076 Siegen, Germany
- Bio-Organic Materials Chemistry Laboratory (BOMCLab), Institute of Electronic Structure & Laser (IESL), Foundation for Research and Technology - Hellas (FORTH), Nikolaou Plastira 100, Vassilika Vouton, P.O. Box 1527, 71110 Heraklion, Crete, Greece
| |
Collapse
|
24
|
Goldansaz H, Auhl D, Goderis B, Voleppe Q, Fustin CA, Gohy JF, Bailly C, van Ruymbeke E. Transient Metallosupramolecular Networks Built from Entangled Melts of Poly(ethylene oxide). Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b00703] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
| | - Dietmar Auhl
- Faculty
of Humanities and Sciences, Maastricht University, Maastricht, Netherlands
| | - Bart Goderis
- Polymer
Chemistry and Materials, Katholieke Universiteit Leuven, Celestijnenlaan
200f, 3001 Heverlee, Belgium
| | | | - Charles-André Fustin
- Bio and Soft Matter Division (BSMA), Institut de la Matière
Condensée et des Nanosciences (IMCN), Université catholique de Louvain, Place Pasteur 1, 1348 Louvain-la-Neuve, Belgium
| | - Jean-François Gohy
- Bio and Soft Matter Division (BSMA), Institut de la Matière
Condensée et des Nanosciences (IMCN), Université catholique de Louvain, Place Pasteur 1, 1348 Louvain-la-Neuve, Belgium
| | | | | |
Collapse
|
25
|
Morelle J, Sow A, Cnops Y, Druart S, Fustin CA, Goffin E, Devuyst O. FP554OSMOTIC WATER TRANSPORT INDUCED BY ICODEXTRIN OCCURS INDEPENDENTLY OF WATER CHANNELS AND RESEMBLES COLLOID OSMOSIS. Nephrol Dial Transplant 2015. [DOI: 10.1093/ndt/gfv180.06] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
|
26
|
Affiliation(s)
- Jérémy Brassinne
- Institute of Condensed Matter and Nanosciences; Bio- and Soft Matter division; Université catholique de Louvain; Place L. Pasteur 1, bte. L4.01.01 B-1348 Louvain-la-Neuve Belgium
| | - Elio Poggi
- Institute of Condensed Matter and Nanosciences; Bio- and Soft Matter division; Université catholique de Louvain; Place L. Pasteur 1, bte. L4.01.01 B-1348 Louvain-la-Neuve Belgium
| | - Charles-André Fustin
- Institute of Condensed Matter and Nanosciences; Bio- and Soft Matter division; Université catholique de Louvain; Place L. Pasteur 1, bte. L4.01.01 B-1348 Louvain-la-Neuve Belgium
| | - Jean-François Gohy
- Institute of Condensed Matter and Nanosciences; Bio- and Soft Matter division; Université catholique de Louvain; Place L. Pasteur 1, bte. L4.01.01 B-1348 Louvain-la-Neuve Belgium
| |
Collapse
|
27
|
Goldansaz H, van Ruymbeke E, Gohy JF, Fustin CA, Ries ME, Bailly C. Local Molecular Dynamics and Heterogeneity in PEO–NiCl2 Supramolecular Networks. Macromolecules 2015. [DOI: 10.1021/ma502571z] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hadi Goldansaz
- Bio
and Soft Matter Division (BSMA), Institut de la Matière Condensée
et des Nanosciences (IMCN), Université catholique de Louvain, Place Croix du Sud 1, 1348 Louvain-la-Neuve, Belgium
| | - Evelyne van Ruymbeke
- Bio
and Soft Matter Division (BSMA), Institut de la Matière Condensée
et des Nanosciences (IMCN), Université catholique de Louvain, Place Croix du Sud 1, 1348 Louvain-la-Neuve, Belgium
| | - Jean-François Gohy
- Bio
and Soft Matter Division (BSMA), Institut de la Matière Condensée
et des Nanosciences (IMCN), Université catholique de Louvain, Place Pasteur B-1, 348 Louvain-la-Neuve, Belgium
| | - Charles-André Fustin
- Bio
and Soft Matter Division (BSMA), Institut de la Matière Condensée
et des Nanosciences (IMCN), Université catholique de Louvain, Place Pasteur B-1, 348 Louvain-la-Neuve, Belgium
| | - Michael E. Ries
- Soft Matter Physics Research Group, School of Physics & Astronomy, University of Leeds, Leeds, LS2 9JT, U.K
| | - Christian Bailly
- Bio
and Soft Matter Division (BSMA), Institut de la Matière Condensée
et des Nanosciences (IMCN), Université catholique de Louvain, Place Croix du Sud 1, 1348 Louvain-la-Neuve, Belgium
| |
Collapse
|
28
|
Goldansaz H, Voleppe Q, Piogé S, Fustin CA, Gohy JF, Brassinne J, Auhl D, van Ruymbeke E. Controlling the melt rheology of linear entangled metallo-supramolecular polymers. Soft Matter 2015; 11:762-774. [PMID: 25492131 DOI: 10.1039/c4sm02319f] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We study in the melt the linear viscoelastic properties of supramolecular assemblies obtained by adding different amounts of nickel ions to linear entangled poly(ethylene oxide) (PEO) building blocks end-functionalized by a terpyridine group. We first show that the elasticity of these supramolecular assemblies is mainly governed by the entanglement dynamics of the building blocks, while the supramolecular interactions delay or suppress their relaxation. By adjusting the amount of metal ions, the relaxation time as well as the level of the low-frequency plateau of these supramolecular assemblies can be controlled. In particular, the addition of metal ions above the 1:2 metal ion/terpyridine stoichiometric ratio allows secondary supramolecular interactions to appear, which are able to link the linear supramolecular assemblies and thus, lead to the reversible gelation of the system. By comparing the rheological behavior of different linear PEO samples, bearing or not functionalized chain-ends, we show that these extra supramolecular bonds are partially due to the association between the excess of metal ions and the oxygen atoms of the PEO chains. We also investigate the possible role played by the terpyridine groups in the formation of these secondary supramolecular interactions.
Collapse
Affiliation(s)
- H Goldansaz
- Bio and Soft Matter, IMCN, Université catholique de Louvain, Belgium.
| | | | | | | | | | | | | | | |
Collapse
|
29
|
Brassinne J, Jochum FD, Fustin CA, Gohy JF. Revealing the supramolecular nature of side-chain terpyridine-functionalized polymer networks. Int J Mol Sci 2015; 16:990-1007. [PMID: 25569082 PMCID: PMC4307286 DOI: 10.3390/ijms16010990] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2014] [Accepted: 12/19/2014] [Indexed: 11/29/2022] Open
Abstract
Nowadays, finely controlling the mechanical properties of polymeric materials is possible by incorporating supramolecular motifs into their architecture. In this context, the synthesis of a side-chain terpyridine-functionalized poly(2-(dimethylamino)ethyl methacrylate) is reported via reversible addition-fragmentation chain transfer polymerization. By addition of transition metal ions, concentrated aqueous solutions of this polymer turn into metallo-supramolecular hydrogels whose dynamic mechanical properties are investigated by rotational rheometry. Hence, the possibility for the material to relax mechanical constrains via dissociation of transient cross-links is brought into light. In addition, the complex phenomena occurring under large oscillatory shear are interpreted in the context of transient networks.
Collapse
Affiliation(s)
- Jérémy Brassinne
- Institute of Condensed Matter and Nanosciences (IMCN), Bio- and Soft Matter (BSMA) Division, Université catholique de Louvain (UCL), Place L. Pasteur 1, Louvain-la-Neuve B-1348, Belgium.
| | - Florian D Jochum
- Institute of Condensed Matter and Nanosciences (IMCN), Bio- and Soft Matter (BSMA) Division, Université catholique de Louvain (UCL), Place L. Pasteur 1, Louvain-la-Neuve B-1348, Belgium.
| | - Charles-André Fustin
- Institute of Condensed Matter and Nanosciences (IMCN), Bio- and Soft Matter (BSMA) Division, Université catholique de Louvain (UCL), Place L. Pasteur 1, Louvain-la-Neuve B-1348, Belgium.
| | - Jean-François Gohy
- Institute of Condensed Matter and Nanosciences (IMCN), Bio- and Soft Matter (BSMA) Division, Université catholique de Louvain (UCL), Place L. Pasteur 1, Louvain-la-Neuve B-1348, Belgium.
| |
Collapse
|
30
|
Thomassin JM, Mathieu K, Kermagoret A, Fustin CA, Jérôme C, Debuigne A. Double thermo-responsive hydrogels from poly(vinylcaprolactam) containing diblock and triblock copolymers. Polym Chem 2015. [DOI: 10.1039/c4py01606h] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The thermally-induced gelation and gel properties of concentrated aqueous solutions of double thermoresponsive poly(N-vinylamide)-based di- and triblock copolymers are studied by rheology.
Collapse
Affiliation(s)
- Jean-Michel Thomassin
- Center for Education and Research on Macromolecules (CERM)
- Chemistry Department
- University of Liege (ULg)
- B-4000 Liège
- Belgium
| | - Kevin Mathieu
- Center for Education and Research on Macromolecules (CERM)
- Chemistry Department
- University of Liege (ULg)
- B-4000 Liège
- Belgium
| | - Anthony Kermagoret
- Center for Education and Research on Macromolecules (CERM)
- Chemistry Department
- University of Liege (ULg)
- B-4000 Liège
- Belgium
| | - Charles-André Fustin
- Institute of Condensed Matter and Nanosciences (IMCN)
- Bio- and Soft Matter division (BSMA)
- Université catholique de Louvain
- 1348 Louvain-la-Neuve
- Belgium
| | - Christine Jérôme
- Center for Education and Research on Macromolecules (CERM)
- Chemistry Department
- University of Liege (ULg)
- B-4000 Liège
- Belgium
| | - Antoine Debuigne
- Center for Education and Research on Macromolecules (CERM)
- Chemistry Department
- University of Liege (ULg)
- B-4000 Liège
- Belgium
| |
Collapse
|
31
|
Brassinne J, Poggi E, Fustin CA, Gohy JF. Synthesis and Self-Assembly of Terpyridine End-Capped Poly(N-Isopropylacrylamide)-block-Poly(2-(Dimethylamino)ethyl Methacrylate) Diblock Copolymers. Macromol Rapid Commun 2014; 36:610-5. [DOI: 10.1002/marc.201400553] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2014] [Revised: 11/02/2014] [Indexed: 12/22/2022]
Affiliation(s)
- Jérémy Brassinne
- Institute of Condensed Matter and Nanosciences; Bio- and Soft Matter division; Université catholique de Louvain; Place L. Pasteur 1, bte. L4.01.01 B-1348 Louvain-la-Neuve Belgium
| | - Elio Poggi
- Institute of Condensed Matter and Nanosciences; Bio- and Soft Matter division; Université catholique de Louvain; Place L. Pasteur 1, bte. L4.01.01 B-1348 Louvain-la-Neuve Belgium
| | - Charles-André Fustin
- Institute of Condensed Matter and Nanosciences; Bio- and Soft Matter division; Université catholique de Louvain; Place L. Pasteur 1, bte. L4.01.01 B-1348 Louvain-la-Neuve Belgium
| | - Jean-François Gohy
- Institute of Condensed Matter and Nanosciences; Bio- and Soft Matter division; Université catholique de Louvain; Place L. Pasteur 1, bte. L4.01.01 B-1348 Louvain-la-Neuve Belgium
| |
Collapse
|
32
|
Guerlain C, Piogé S, Detrembleur C, Fustin CA, Gohy JF. Self-assembly of a triblock terpolymer mediated by hydrogen-bonded complexes. ACTA ACUST UNITED AC 2014. [DOI: 10.1002/pola.27471] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Claire Guerlain
- Institute of Condensed Matter and Nanosciences (IMCN); Bio- and Soft Matter (BSMA), Université Catholique de Louvain, Place L. Pasteur 1; 1348 Louvain-la-Neuve Belgium
| | - Sandie Piogé
- Département Méthodologie et Synthèse; Institut des Molécules et des Matériaux du Mans (IMMM), UMR 6283 CNRS, Université du Maine; Av. O. Messiaen 72085 Le Mans France
| | - Christophe Detrembleur
- Department of Chemistry; Center for Education and Research on Macromolecules (CERM); University of Liège; Sart-Tilman B6A 4000 Liège Belgium
| | - Charles-André Fustin
- Institute of Condensed Matter and Nanosciences (IMCN); Bio- and Soft Matter (BSMA), Université Catholique de Louvain, Place L. Pasteur 1; 1348 Louvain-la-Neuve Belgium
| | - Jean-François Gohy
- Institute of Condensed Matter and Nanosciences (IMCN); Bio- and Soft Matter (BSMA), Université Catholique de Louvain, Place L. Pasteur 1; 1348 Louvain-la-Neuve Belgium
| |
Collapse
|
33
|
Brassinne J, Gohy JF, Fustin CA. Controlling the Cross-Linking Density of Supramolecular Hydrogels Formed by Heterotelechelic Associating Copolymers. Macromolecules 2014. [DOI: 10.1021/ma500537t] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Jérémy Brassinne
- Institute of Condensed Matter
and Nanosciences (IMCN), Bio and Soft Matter Division (BSMA), Université catholique de Louvain, Place L. Pasteur 1, bte L4.01.01, B-1348 Louvain-la-Neuve, Belgium
| | - Jean-François Gohy
- Institute of Condensed Matter
and Nanosciences (IMCN), Bio and Soft Matter Division (BSMA), Université catholique de Louvain, Place L. Pasteur 1, bte L4.01.01, B-1348 Louvain-la-Neuve, Belgium
| | - Charles-André Fustin
- Institute of Condensed Matter
and Nanosciences (IMCN), Bio and Soft Matter Division (BSMA), Université catholique de Louvain, Place L. Pasteur 1, bte L4.01.01, B-1348 Louvain-la-Neuve, Belgium
| |
Collapse
|
34
|
Brassinne J, Bourgeois JP, Fustin CA, Gohy JF. Thermo-responsive properties of metallo-supramolecular block copolymer micellar hydrogels. Soft Matter 2014; 10:3086-3092. [PMID: 24695908 DOI: 10.1039/c3sm53013b] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Metallo-supramolecular micellar hydrogels exhibiting thermo-mechanical responsiveness are prepared through the hierarchical assembly of a heterotelechelic associating copolymer. The copolymer consists of a linear thermo-sensitive water-soluble sequence terminated by a short hydrophobic sticker at one end, the other being functionalized by a chelating ligand. As the first level of assembly, the associating copolymer is dissolved in aqueous solution to yield micellar nanostructures, bearing coordinative motifs at the end of the coronal chains. The second level of assembly is achieved when transition metal ions are added to the micellar solutions, resulting in almost instantaneous gelation. The thermo-mechanical response of those materials is investigated in detail by rotational rheometry, showing abrupt changes within the temperature boundaries corresponding to the phase transition of the polymer block located in the micellar corona.
Collapse
Affiliation(s)
- Jérémy Brassinne
- Institute of Condensed Matter and Nanosciences (IMCN), Bio and Soft Matter division (BSMA), Université catholique de Louvain, Place L. Pasteur 1, 1348 Louvain-la-Neuve, Belgium.
| | | | | | | |
Collapse
|
35
|
|
36
|
Kermagoret A, Mathieu K, Thomassin JM, Fustin CA, Duchêne R, Jérôme C, Detrembleur C, Debuigne A. Double thermoresponsive di- and triblock copolymers based on N-vinylcaprolactam and N-vinylpyrrolidone: synthesis and comparative study of solution behaviour. Polym Chem 2014. [DOI: 10.1039/c4py00852a] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Controlled radical polymerization produces poly(N-vinylamide)s with thermally induced multistep assembly.
Collapse
Affiliation(s)
- Anthony Kermagoret
- Center for Education and Research on Macromolecules (CERM)
- Chemistry Department
- University of Liege (ULg)
- B-4000 Liège, Belgium
| | - Kevin Mathieu
- Center for Education and Research on Macromolecules (CERM)
- Chemistry Department
- University of Liege (ULg)
- B-4000 Liège, Belgium
| | - Jean-Michel Thomassin
- Center for Education and Research on Macromolecules (CERM)
- Chemistry Department
- University of Liege (ULg)
- B-4000 Liège, Belgium
| | - Charles-André Fustin
- Institute of Condensed Matter and Nanosciences (IMCN)
- Bio- and Soft Matter Division (BSMA)
- Université Catholique de Louvain
- 1348 Louvain-la-Neuve, Belgium
| | - Roland Duchêne
- Institute of Condensed Matter and Nanosciences (IMCN)
- Bio- and Soft Matter Division (BSMA)
- Université Catholique de Louvain
- 1348 Louvain-la-Neuve, Belgium
| | - Christine Jérôme
- Center for Education and Research on Macromolecules (CERM)
- Chemistry Department
- University of Liege (ULg)
- B-4000 Liège, Belgium
| | - Christophe Detrembleur
- Center for Education and Research on Macromolecules (CERM)
- Chemistry Department
- University of Liege (ULg)
- B-4000 Liège, Belgium
| | - Antoine Debuigne
- Center for Education and Research on Macromolecules (CERM)
- Chemistry Department
- University of Liege (ULg)
- B-4000 Liège, Belgium
| |
Collapse
|
37
|
Affiliation(s)
- Olivier Bertrand
- Institute of Condensed Matter
and Nanosciences (IMCN), Bio- and Soft matter (BSMA) division, Universite catholique de Louvain, Place L. Pasteur 1, Louvain-la-Neuve, Belgium
| | - Elio Poggi
- Institute of Condensed Matter
and Nanosciences (IMCN), Bio- and Soft matter (BSMA) division, Universite catholique de Louvain, Place L. Pasteur 1, Louvain-la-Neuve, Belgium
| | - Jean-François Gohy
- Institute of Condensed Matter
and Nanosciences (IMCN), Bio- and Soft matter (BSMA) division, Universite catholique de Louvain, Place L. Pasteur 1, Louvain-la-Neuve, Belgium
| | - Charles-André Fustin
- Institute of Condensed Matter
and Nanosciences (IMCN), Bio- and Soft matter (BSMA) division, Universite catholique de Louvain, Place L. Pasteur 1, Louvain-la-Neuve, Belgium
| |
Collapse
|
38
|
Fustin CA, Leigh DA, Rudolf P, Timpel D, Zerbetto F. Physical consequences of a mechanically interlocked architecture: benzylic amide catenane NH stretching vibrations as sensitive probes for weakly hydrogen-bonding environments. Chemphyschem 2013; 1:97-100. [PMID: 23696287 DOI: 10.1002/1439-7641(20000915)1:2<97::aid-cphc97>3.0.co;2-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2000] [Indexed: 11/11/2022]
Affiliation(s)
- C A Fustin
- Laboratoire Interdisciplinaire de Spectroscopie Electronique, Facultes Universitaires Notre-Dame de la Paix, Rue de Bruxelles, 5000 Namur, Belgium
| | | | | | | | | |
Collapse
|
39
|
Brassinne J, Stevens AM, Van Ruymbeke E, Gohy JF, Fustin CA. Hydrogels with Dual Relaxation and Two-Step Gel–Sol Transition from Heterotelechelic Polymers. Macromolecules 2013. [DOI: 10.1021/ma401657f] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jérémy Brassinne
- Institute of Condensed Matter
and Nanosciences (IMCN), Bio and Soft Matter division (BSMA), Université catholique de Louvain, Place L. Pasteur 1, 1348 Louvain-la-Neuve, Belgium
| | - Arnaud M. Stevens
- Institute of Condensed Matter
and Nanosciences (IMCN), Bio and Soft Matter division (BSMA), Université catholique de Louvain, Place L. Pasteur 1, 1348 Louvain-la-Neuve, Belgium
| | - Evelyne Van Ruymbeke
- Institute of Condensed Matter
and Nanosciences (IMCN), Bio and Soft Matter division (BSMA), Université catholique de Louvain, Place L. Pasteur 1, 1348 Louvain-la-Neuve, Belgium
| | - Jean-François Gohy
- Institute of Condensed Matter
and Nanosciences (IMCN), Bio and Soft Matter division (BSMA), Université catholique de Louvain, Place L. Pasteur 1, 1348 Louvain-la-Neuve, Belgium
| | - Charles-André Fustin
- Institute of Condensed Matter
and Nanosciences (IMCN), Bio and Soft Matter division (BSMA), Université catholique de Louvain, Place L. Pasteur 1, 1348 Louvain-la-Neuve, Belgium
| |
Collapse
|
40
|
Mugemana C, Joset A, Guillet P, Appavou MS, De Souza N, Fustin CA, Leyh B, Gohy JF. Structure of Metallo-Supramolecular Micellar Gels. MACROMOL CHEM PHYS 2013. [DOI: 10.1002/macp.201300288] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
41
|
Gamys CG, Schumers JM, Mugemana C, Fustin CA, Gohy JF. Pore-Functionalized Nanoporous Materials Derived from Block Copolymers. Macromol Rapid Commun 2013; 34:962-82. [DOI: 10.1002/marc.201300214] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2013] [Revised: 04/18/2013] [Indexed: 11/10/2022]
|
42
|
Kermagoret A, Fustin CA, Bourguignon M, Detrembleur C, Jérôme C, Debuigne A. One-pot controlled synthesis of double thermoresponsive N-vinylcaprolactam-based copolymers with tunable LCSTs. Polym Chem 2013. [DOI: 10.1039/c3py00134b] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
|
43
|
|
44
|
|
45
|
Abstract
This contribution describes the synthesis and associating behavior in water of a multiresponsive amphiphilic diblock copolymer. This copolymer is composed of an hydrophobic photocleavable poly(para-methoxyphenacyl methacrylate) block (PMPMA) and a hydrophilic thermosensitive poly[(oligo ethylene glycol)methacrylate] block (POEGMA). The PMPMA-b-POEGMA copolymer forms micelles with a PMPMA core and a POEGMA corona in water. Light irradiation leads to the transformation of PMPMA into poly(methacrylic acid) (PMAA) and to the disruption of the initial micelles. The response of the accordingly obtained PMAA-b-POEGMA copolymer to pH, temperature, calcium (Ca2+), and phosphate (PO43-) ions is demonstrated.
Collapse
Affiliation(s)
- Olivier Bertrand
- Institute of Condensed Matter and Nanosciences (IMCN), Bio- and Soft Matter (BSMA), Université catholique de Louvain, Place L. Pasteur 1, Louvain-la-Neuve,
Belgium
| | - Charles-André Fustin
- Institute of Condensed Matter and Nanosciences (IMCN), Bio- and Soft Matter (BSMA), Université catholique de Louvain, Place L. Pasteur 1, Louvain-la-Neuve,
Belgium
| | - Jean-François Gohy
- Institute of Condensed Matter and Nanosciences (IMCN), Bio- and Soft Matter (BSMA), Université catholique de Louvain, Place L. Pasteur 1, Louvain-la-Neuve,
Belgium
| |
Collapse
|
46
|
Abstract
A polystyrene-[Ni(2+)]-poly(ethylene oxide) metallo-supramolecular block copolymer (PS-[Ni(2+)]-PEO), where -[ is a terpyridine, is used to create nanoporous thin films with free terpyridine ligands homogenously distributed on the pore walls. The PS-[Ni(2+)]-PEO block copolymer is synthesized by a two step assembly process, and is then self-assembled into a thin film in order to obtain PEO cylinders oriented perpendicularly to the film surface. The supramolecular junction is opened by exposing the film to an excess of a competing ligand, and the free PEO block is then rinsed away by a selective solvent. The presence of the terpyridines on the pore walls is evidenced by fluorescence spectroscopy after formation of a fluorescent complex with an europium salt.
Collapse
Affiliation(s)
- Clément Mugemana
- Institute of Condensed Matter and Nanosciences, Bio- and Soft Matter (BSMA), Université catholique de Louvain, Place Pasteur 1, 1348 Louvain-la-Neuve, Belgium
| | | | | |
Collapse
|
47
|
Piogé S, Fustin CA, Gohy JF. Temperature-Responsive Aqueous Micelles From Terpyridine End-Capped Poly(N-Isopropylacrylamide)-Block-Polystyrene Diblock Copolymers. Macromol Rapid Commun 2011; 33:534-9. [DOI: 10.1002/marc.201100640] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2011] [Revised: 10/17/2011] [Indexed: 11/06/2022]
|
48
|
Lussis P, Svaldo-Lanero T, Bertocco A, Fustin CA, Leigh DA, Duwez AS. A single synthetic small molecule that generates force against a load. Nat Nanotechnol 2011; 6:553-557. [PMID: 21857685 DOI: 10.1038/nnano.2011.132] [Citation(s) in RCA: 83] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2011] [Accepted: 07/15/2011] [Indexed: 05/31/2023]
Abstract
Some biomolecules are able to generate directional forces by rectifying random thermal motions. This allows these molecular machines to perform mechanical tasks such as intracellular cargo transport or muscle contraction in plants and animals. Although some artificial molecular machines have been synthesized and used collectively to perform mechanical tasks, so far there have been no direct measurements of mechanical processes at the single-molecule level. Here we report measurements of the mechanical work performed by a synthetic molecule less than 5 nm long. We show that biased Brownian motion of the sub-molecular components in a hydrogen-bonded [2]rotaxane-a molecular ring threaded onto a molecular axle-can be harnessed to generate significant directional forces. We used the cantilever of an atomic force microscope to apply a mechanical load to the ring during single-molecule pulling-relaxing cycles. The ring was pulled along the axle, away from the thermodynamically favoured binding site, and was then found to travel back to this site against an external load of 30 pN. Using fluctuation theorems, we were able to relate measurements of the work done at the level of individual rotaxane molecules to the free-energy change as previously determined from ensemble measurements. The results show that individual rotaxanes can generate directional forces of similar magnitude to those generated by natural molecular machines.
Collapse
Affiliation(s)
- Perrine Lussis
- Department of Chemistry, University of Liège, B6a Sart-Tilman, 4000 Liège, Belgium
| | | | | | | | | | | |
Collapse
|
49
|
|
50
|
De Bo G, De Winter J, Gerbaux P, Fustin CA. Rotaxane-Based Mechanically Linked Block Copolymers. Angew Chem Int Ed Engl 2011; 50:9093-6. [DOI: 10.1002/anie.201103716] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2011] [Indexed: 11/09/2022]
|