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Legrand A, Liu LH, Royla P, Aoyama T, Craig GA, Carné-Sánchez A, Urayama K, Weigand JJ, Lin CH, Furukawa S. Spatiotemporal Control of Supramolecular Polymerization and Gelation of Metal-Organic Polyhedra. J Am Chem Soc 2021; 143:3562-3570. [PMID: 33646776 DOI: 10.1021/jacs.1c00108] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
In coordination-based supramolecular materials such as metallogels, simultaneous temporal and spatial control of their assembly remains challenging. Here, we demonstrate that the combination of light with acids as stimuli allows for the spatiotemporal control over the architectures, mechanical properties, and shape of porous soft materials based on metal-organic polyhedra (MOPs). First, we show that the formation of a colloidal gel network from a preformed kinetically trapped MOP solution can be triggered upon addition of trifluoroacetic acid (TFA) and that acid concentration determines the reaction kinetics. As determined by time-resolved dynamic light scattering, UV-vis absorption, and 1H NMR spectroscopies and rheology measurements, the consequences of the increase in acid concentration are (i) an increase in the cross-linking between MOPs; (ii) a growth in the size of the colloidal particles forming the gel network; (iii) an increase in the density of the colloidal network; and (iv) a decrease in the ductility and stiffness of the resulting gel. We then demonstrate that irradiation of a dispersed photoacid generator, pyranine, allows the spatiotemporal control of the gel formation by locally triggering the self-assembly process. Using this methodology, we show that the gel can be patterned into a desired shape. Such precise positioning of the assembled structures, combined with the stable and permanent porosity of MOPs, could allow their integration into devices for applications such as sensing, separation, catalysis, or drug release.
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Affiliation(s)
- Alexandre Legrand
- Institute for Integrated Cell-Material Sciences, Kyoto University, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan
| | - Li-Hao Liu
- Department of Chemistry, Chung-Yuan Christian University, Chung Li, 32023 Taiwan
| | - Philipp Royla
- Faculty of Chemistry and Food Chemistry, Technische Universität Dresden, 01062 Dresden, Germany
| | - Takuma Aoyama
- Department of Macromolecular Science and Engineering, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
| | - Gavin A Craig
- Institute for Integrated Cell-Material Sciences, Kyoto University, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan
| | - Arnau Carné-Sánchez
- Institute for Integrated Cell-Material Sciences, Kyoto University, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan
| | - Kenji Urayama
- Department of Macromolecular Science and Engineering, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
| | - Jan J Weigand
- Faculty of Chemistry and Food Chemistry, Technische Universität Dresden, 01062 Dresden, Germany
| | - Chia-Her Lin
- Department of Chemistry, Chung-Yuan Christian University, Chung Li, 32023 Taiwan
| | - Shuhei Furukawa
- Institute for Integrated Cell-Material Sciences, Kyoto University, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan.,Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
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Legrand A, Craig GA, Bonneau M, Minami S, Urayama K, Furukawa S. Understanding the multiscale self-assembly of metal-organic polyhedra towards functionally graded porous gels. Chem Sci 2019; 10:10833-10842. [PMID: 32110353 PMCID: PMC7012067 DOI: 10.1039/c9sc04543k] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Accepted: 10/31/2019] [Indexed: 12/19/2022] Open
Abstract
Spatial heterogeneity and gradients within porous materials are key for controlling their mechanical properties and mass/energy transport, both in biological and synthetic materials. However, it is still challenging to induce such complexity in well-defined microporous materials such as crystalline metal-organic frameworks (MOFs). Here we show a method to generate a continuous gradient of porosity over multiple length scales by taking advantage of the amorphous nature of supramolecular polymers based on metal-organic polyhedra (MOPs). First, we use time-resolved dynamic light scattering (TRDLS) to elucidate the mechanism of hierarchical self-assembly of MOPs into colloidal gels and to understand the relationship between the MOP concentrations and the architecture of the resulting colloidal networks. These features directly impact the viscoelastic response of the gels and their mechanical strength. We then show that gradients of stiffness and porosity can be created within the gel by applying centrifugal force at the point of colloidal aggregation. These results with the creation of asymmetric and graded pore configuration in soft materials could lead to the emergence of advanced properties that are coupled to asymmetric molecule/ion transport as seen in biological systems.
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Affiliation(s)
- Alexandre Legrand
- Institute for Integrated Cell-Material Sciences (WPI-iCeMS) , Kyoto University , Yoshida, Sakyo-ku , Kyoto 606-8501 , Japan .
| | - Gavin A Craig
- Institute for Integrated Cell-Material Sciences (WPI-iCeMS) , Kyoto University , Yoshida, Sakyo-ku , Kyoto 606-8501 , Japan .
| | - Mickaele Bonneau
- Institute for Integrated Cell-Material Sciences (WPI-iCeMS) , Kyoto University , Yoshida, Sakyo-ku , Kyoto 606-8501 , Japan .
| | - Saori Minami
- Department of Macromolecular Science and Engineering , Kyoto Institute of Technology , Matsugasaki, Sakyo-ku , Kyoto 606-8585 , Japan
| | - Kenji Urayama
- Department of Macromolecular Science and Engineering , Kyoto Institute of Technology , Matsugasaki, Sakyo-ku , Kyoto 606-8585 , Japan
| | - Shuhei Furukawa
- Institute for Integrated Cell-Material Sciences (WPI-iCeMS) , Kyoto University , Yoshida, Sakyo-ku , Kyoto 606-8501 , Japan .
- Department of Synthetic Chemistry and Biological Chemistry , Graduate School of Engineering , Kyoto University , Katsura, Nishikyo-ku , Kyoto 615-8510 , Japan
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Kruk J, Kaczmarczyk K, Ptaszek A, Goik U, Ptaszek P. The effect of temperature on the colligative properties of food-grade konjac gum in water solutions. Carbohydr Polym 2017; 174:456-463. [DOI: 10.1016/j.carbpol.2017.06.116] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2017] [Revised: 06/27/2017] [Accepted: 06/29/2017] [Indexed: 11/25/2022]
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Papagiannopoulos A, Sotiropoulos K, Pispas S. Particle tracking microrheology of the power-law viscoelasticity of xanthan solutions. Food Hydrocoll 2016. [DOI: 10.1016/j.foodhyd.2016.05.020] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Biffi S, Cerbino R, Nava G, Bomboi F, Sciortino F, Bellini T. Equilibrium gels of low-valence DNA nanostars: a colloidal model for strong glass formers. SOFT MATTER 2015; 11:3132-8. [PMID: 25747102 DOI: 10.1039/c4sm02144d] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Kinetic arrest in colloidal dispersions with isotropic attractive interactions usually occurs through the destabilization of the homogeneous phase and the formation of a non-equilibrium network of jammed particles. Theory and simulations predict that a different route to gelation should become available when the valence of each colloidal particle is suitably reduced. Under these conditions, gelation should be achievable through a reversible sequence of equilibrium states. Here we report the reversible dynamic arrest of a dispersion of DNA-based nanoparticles with anisotropic interactions and a coordination number equal to four. As the temperature is decreased, the relaxation time for density fluctuations slows down by about five orders of magnitude, following an Arrhenius scaling in the entire experimentally accessible temperature window. The system is in thermodynamic equilibrium at all temperatures. Gelation in our system mimics the dynamic arrest of networking atomic strong glass formers such as silica, for which it could thus provide a suitable colloidal model.
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Affiliation(s)
- Silvia Biffi
- Department of Medical Biotechnology and Translational Medicine, Universitá degli Studi di Milano, via Fratelli Cervi 93, I-20090 Segrate, MI, Italy.
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Yu Y, Chau Y. Formulation of in situ chemically cross-linked hydrogel depots for protein release: from the blob model perspective. Biomacromolecules 2014; 16:56-65. [PMID: 25314589 DOI: 10.1021/bm501063n] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
The fast release rate and the undesirable covalent binding are two major problems often encountered in formulating in situ chemically cross-linked hydrogel as protein release depot, particularly when prolonged release over months is desirable. In this study, we applied the De Gennes' blob theory to analyze and tackle these two problems using a vinylsulfone-thiol (VS-SH) reaction based in situ hydrogel system. We showed that the simple scaling relation ξb ≈ Rg(c/c*)(-v/(3v-1)) is applicable to the in situ hydrogel and the mesh size estimated from the precursor polymer parameters is a reasonable match to experimental results. On the other hand, as predicted by the theory and confirmed by experiments, the drug diffusion within hydrogel depends mainly on polymer concentration but not the degree of modification (DM). The covalent binding was found to be caused by the mismatch of location between the reactive groups and the entanglement points. The mismatch and, thus, the protein binding were minimized by increasing the DM and concentration of the SH polymer relative to the VS polymer, as predicted by theory. Using these principles, an in situ hydrogel system for the controlled release of an antiangiogenic antibody therapeutics bevacizumab for 3 months was developed.
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Affiliation(s)
- Yu Yu
- Division of Biomedical Engineering and ‡Department of Chemical and Biomolecular Engineering, The Hong Kong University of Science and Technology , Clear Water Bay, Kowloon, Hong Kong, China
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Builes DH, Hernández-Ortiz JP, Corcuera MA, Mondragon I, Tercjak A. Effect of poly(ethylene oxide) homopolymer and two different poly(ethylene oxide-b-poly(propylene oxide)-b-poly(ethylene oxide) triblock copolymers on morphological, optical, and mechanical properties of nanostructured unsaturated polyester. ACS APPLIED MATERIALS & INTERFACES 2014; 6:1073-1081. [PMID: 24354274 DOI: 10.1021/am4046266] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Novel nanostructured unsaturated polyester resin-based thermosets, modified with poly(ethylene oxide) (PEO), poly(propylene oxide) (PPO), and two poly(ethylene oxide-b-propylene oxide-b-ethylene oxide) block copolymers (BCP), were developed and analyzed. The effects of molecular weights, blocks ratio, and curing temperatures on the final morphological, optical, and mechanical properties were reported. The block influence on the BCP miscibility was studied through uncured and cured mixtures of unsaturated polyester (UP) resins with PEO and PPO homopolymers having molecular weights similar to molecular weights of the blocks of BCP. The final morphology of the nanostructured thermosetting systems, containing BCP or homopolymers, was investigated, and multiple mechanisms of nanostructuration were listed and explained. By considering the miscibility of each block before and after curing, it was determined that the formation of the nanostructured matrices followed a self-assembly mechanism or a polymerization-induced phase separation mechanism. The miscibility between PEO or PPO blocks with one of two phases of UP matrix was highlighted due to its importance in the final thermoset properties. Relationships between the final morphology and thermoset optical and mechanical properties were examined. The mechanisms and physics behind the morphologies lead toward the design of highly transparent, nanostructured, and toughened thermosetting UP systems.
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Affiliation(s)
- Daniel H Builes
- Group 'Materials + Technologies', Polytechnic School, Dpto. Ingeniería Química y M. Ambiente, University of Basque Country (UPV/EHU) , Pza. Europa 1, 20018 Donostia-San Sebastián, Spain
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Swelling dynamics of poly(NIPAM-co-AMPS) hydrogels synthesized using PEG as macroinitiator: effect of AMPS content. JOURNAL OF POLYMER RESEARCH 2012. [DOI: 10.1007/s10965-012-0031-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Lemmers M, Spruijt E, Akerboom S, Voets IK, van Aelst AC, Stuart MAC, van der Gucht J. Physical gels based on charge-driven bridging of nanoparticles by triblock copolymers. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:12311-12318. [PMID: 22834713 DOI: 10.1021/la301917e] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
We have prepared an aqueous physical gel consisting of negatively charged silica nanoparticles bridged by ABA triblock copolymers, in which the A blocks are positively charged and the B block is neutral and water-soluble. Irreversible aggregation of the silica nanoparticles was prevented by precoating them with a neutral hydrophilic polymer. Both the elastic plateau modulus and the relaxation time increase slowly as the gel ages, indicating an increase both in the number of active bridges and in the strength with which the end blocks are adsorbed. The rate of this aging process can be increased significantly by applying a small shear stress to the sample. Our results indicate that charge-driven bridging of nanoparticles by triblock copolymers is a promising strategy for thickening of aqueous particle containing materials, such as water-based coatings.
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Affiliation(s)
- Marc Lemmers
- Laboratory of Physical Chemistry and Colloid Science, Wageningen University, Wageningen, The Netherlands
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Seiffert S, Sprakel J. Physical chemistry of supramolecular polymer networks. Chem Soc Rev 2012; 41:909-30. [DOI: 10.1039/c1cs15191f] [Citation(s) in RCA: 401] [Impact Index Per Article: 33.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Krüger S, Krahl F, Arndt KF. Random cross-linked poly(styrene-co-maleic anhydride): Characterization of cross-linking intermediates by size exclusion chromatography. Eur Polym J 2010. [DOI: 10.1016/j.eurpolymj.2010.01.024] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Gao X, Liu R, Huang Y, Starykov O, Oppermann W. Clathrate (δ) Form Crystal Transitions of Syndiotactic Polystyrene in Atactic Polystyrene Networks. Macromolecules 2008. [DOI: 10.1021/ma701988w] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xia Gao
- State Key Laboratory of Polymer Physics & Chemistry, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China; Beijing Centre of Physical and Chemical Analysis, Beijing Academy of Sciences and Technology, Beijing 100089, China; and Institute of Physical Chemistry, Technical University of Clausthal, Arnold-Sommerfeld Strasse 4, 38678 Clausthal-Zellerfeld, Germany
| | - Ruigang Liu
- State Key Laboratory of Polymer Physics & Chemistry, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China; Beijing Centre of Physical and Chemical Analysis, Beijing Academy of Sciences and Technology, Beijing 100089, China; and Institute of Physical Chemistry, Technical University of Clausthal, Arnold-Sommerfeld Strasse 4, 38678 Clausthal-Zellerfeld, Germany
| | - Yong Huang
- State Key Laboratory of Polymer Physics & Chemistry, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China; Beijing Centre of Physical and Chemical Analysis, Beijing Academy of Sciences and Technology, Beijing 100089, China; and Institute of Physical Chemistry, Technical University of Clausthal, Arnold-Sommerfeld Strasse 4, 38678 Clausthal-Zellerfeld, Germany
| | - Oleksiy Starykov
- State Key Laboratory of Polymer Physics & Chemistry, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China; Beijing Centre of Physical and Chemical Analysis, Beijing Academy of Sciences and Technology, Beijing 100089, China; and Institute of Physical Chemistry, Technical University of Clausthal, Arnold-Sommerfeld Strasse 4, 38678 Clausthal-Zellerfeld, Germany
| | - Wilhelm Oppermann
- State Key Laboratory of Polymer Physics & Chemistry, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China; Beijing Centre of Physical and Chemical Analysis, Beijing Academy of Sciences and Technology, Beijing 100089, China; and Institute of Physical Chemistry, Technical University of Clausthal, Arnold-Sommerfeld Strasse 4, 38678 Clausthal-Zellerfeld, Germany
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Richter S. Recent Gelation Studies on Irreversible and Reversible Systems with Dynamic Light Scattering and Rheology - A Concise Summary. MACROMOL CHEM PHYS 2007. [DOI: 10.1002/macp.200700285] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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