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Hengsbach R, Fink G, Simon U. 1H-NMR studies on the volume phase transition of DNA-modified pNipmam microgels. SOFT MATTER 2024; 20:330-337. [PMID: 38087892 DOI: 10.1039/d3sm01124k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2024]
Abstract
DNA functionalized pNipmam microgels, which have recently been introduced, are examined at different concentrations of sodium chloride and in PBS solutions via temperature dependent 1H-NMR measurements and are compared to pure pNipmam microgels. We show that the DNA modification shifts the volume phase transition temperature towards lower temperatures and the addition of salt and PBS further supports this effect in both materials. Thermodynamic values, i.e. enthalpy, entropy and Gibbs free energy, are determined via a non-linear fit which can be applied directly to the measurement data without further linearization.
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Affiliation(s)
- Rebecca Hengsbach
- Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1a, D-52074 Aachen, Germany.
| | - Gerhard Fink
- Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1a, D-52074 Aachen, Germany.
| | - Ulrich Simon
- Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1a, D-52074 Aachen, Germany.
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2
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Zheng S, Liu K, Chen P, Song C, Yan J, Zhang A. Thermoresponsive Microgels from Cyclodextrin-Based Polyrotaxanes with Photomodulated Degradation. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c01195] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Shudong Zheng
- International Joint Laboratory of Biomimetic & Smart Polymers, School of Materials Science and Engineering, Shanghai University, Nanchen Street 380, Shanghai 200444, China
| | - Kun Liu
- International Joint Laboratory of Biomimetic & Smart Polymers, School of Materials Science and Engineering, Shanghai University, Nanchen Street 380, Shanghai 200444, China
| | - Peiyun Chen
- International Joint Laboratory of Biomimetic & Smart Polymers, School of Materials Science and Engineering, Shanghai University, Nanchen Street 380, Shanghai 200444, China
| | - Changsheng Song
- International Joint Laboratory of Biomimetic & Smart Polymers, School of Materials Science and Engineering, Shanghai University, Nanchen Street 380, Shanghai 200444, China
| | - Jiatao Yan
- International Joint Laboratory of Biomimetic & Smart Polymers, School of Materials Science and Engineering, Shanghai University, Nanchen Street 380, Shanghai 200444, China
| | - Afang Zhang
- International Joint Laboratory of Biomimetic & Smart Polymers, School of Materials Science and Engineering, Shanghai University, Nanchen Street 380, Shanghai 200444, China
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Xu Y, Zhu H, Denduluri A, Ou Y, Erkamp NA, Qi R, Shen Y, Knowles TPJ. Recent Advances in Microgels: From Biomolecules to Functionality. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2200180. [PMID: 35790106 DOI: 10.1002/smll.202200180] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Revised: 03/15/2022] [Indexed: 06/15/2023]
Abstract
The emerging applications of hydrogel materials at different length scales, in areas ranging from sustainability to health, have driven the progress in the design and manufacturing of microgels. Microgels can provide miniaturized, monodisperse, and regulatable compartments, which can be spatially separated or interconnected. These microscopic materials provide novel opportunities for generating biomimetic cell culture environments and are thus key to the advances of modern biomedical research. The evolution of the physical and chemical properties has, furthermore, highlighted the potentials of microgels in the context of materials science and bioengineering. This review describes the recent research progress in the fabrication, characterization, and applications of microgels generated from biomolecular building blocks. A key enabling technology allowing the tailoring of the properties of microgels is their synthesis through microfluidic technologies, and this paper highlights recent advances in these areas and their impact on expanding the physicochemical parameter space accessible using microgels. This review finally discusses the emerging roles that microgels play in liquid-liquid phase separation, micromechanics, biosensors, and regenerative medicine.
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Affiliation(s)
- Yufan Xu
- Centre for Misfolding Diseases, Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge, CB2 1EW, UK
| | - Hongjia Zhu
- Centre for Misfolding Diseases, Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge, CB2 1EW, UK
| | - Akhila Denduluri
- Centre for Misfolding Diseases, Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge, CB2 1EW, UK
| | - Yangteng Ou
- Centre for Misfolding Diseases, Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge, CB2 1EW, UK
| | - Nadia A Erkamp
- Centre for Misfolding Diseases, Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge, CB2 1EW, UK
| | - Runzhang Qi
- Centre for Misfolding Diseases, Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge, CB2 1EW, UK
| | - Yi Shen
- Centre for Misfolding Diseases, Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge, CB2 1EW, UK
- School of Chemical and Biomolecular Engineering, The University of Sydney, Sydney, NSW, 2006, Australia
- The University of Sydney Nano Institute, University of Sydney, Sydney, NSW, 2006, Australia
| | - Tuomas P J Knowles
- Centre for Misfolding Diseases, Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge, CB2 1EW, UK
- Cavendish Laboratory, University of Cambridge, Cambridge, CB3 0HE, UK
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4
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Novel in-situ synthesis of copper oxide nanoparticle in smart polymer microgel for catalytic reduction of methylene blue. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.119181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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5
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Scotti A, Schulte MF, Lopez CG, Crassous JJ, Bochenek S, Richtering W. How Softness Matters in Soft Nanogels and Nanogel Assemblies. Chem Rev 2022; 122:11675-11700. [PMID: 35671377 DOI: 10.1021/acs.chemrev.2c00035] [Citation(s) in RCA: 36] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Softness plays a key role in determining the macroscopic properties of colloidal systems, from synthetic nanogels to biological macromolecules, from viruses to star polymers. However, we are missing a way to quantify what the term "softness" means in nanoscience. Having quantitative parameters is fundamental to compare different systems and understand what the consequences of softness on the macroscopic properties are. Here, we propose different quantities that can be measured using scattering methods and microscopy experiments. On the basis of these quantities, we review the recent literature on micro- and nanogels, i.e. cross-linked polymer networks swollen in water, a widely used model system for soft colloids. Applying our criteria, we address the question what makes a nanomaterial soft? We discuss and introduce general criteria to quantify the different definitions of softness for an individual compressible colloid. This is done in terms of the energetic cost associated with the deformation and the capability of the colloid to isotropically deswell. Then, concentrated solutions of soft colloids are considered. New definitions of softness and new parameters, which depend on the particle-to-particle interactions, are introduced in terms of faceting and interpenetration. The influence of the different synthetic routes on the softness of nanogels is discussed. Concentrated solutions of nanogels are considered and we review the recent results in the literature concerning the phase behavior and flow properties of nanogels both in three and two dimensions, in the light of the different parameters we defined. The aim of this review is to look at the results on micro- and nanogels in a more quantitative way that allow us to explain the reported properties in terms of differences in colloidal softness. Furthermore, this review can give researchers dealing with soft colloids quantitative methods to define unambiguously which softness matters in their compound.
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Affiliation(s)
- Andrea Scotti
- Institute of Physical Chemistry, RWTH Aachen University, Landoltweg 2, 52056 Aachen, Germany, European Union
| | - M Friederike Schulte
- Institute of Physical Chemistry, RWTH Aachen University, Landoltweg 2, 52056 Aachen, Germany, European Union
| | - Carlos G Lopez
- Institute of Physical Chemistry, RWTH Aachen University, Landoltweg 2, 52056 Aachen, Germany, European Union
| | - Jérôme J Crassous
- Institute of Physical Chemistry, RWTH Aachen University, Landoltweg 2, 52056 Aachen, Germany, European Union
| | - Steffen Bochenek
- Institute of Physical Chemistry, RWTH Aachen University, Landoltweg 2, 52056 Aachen, Germany, European Union
| | - Walter Richtering
- Institute of Physical Chemistry, RWTH Aachen University, Landoltweg 2, 52056 Aachen, Germany, European Union
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Zhang J, Wang W, Wang Y, Qiu C, Mao C, Deng S, Wang J. Effect of Cross‐Linked Structures on Mechanical Properties of Styrene‐Butadiene Rubber via Molecular Dynamics Simulation. MACROMOL THEOR SIMUL 2021. [DOI: 10.1002/mats.202100054] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Jing Zhang
- Institute of Industrial Catalysis State Key Laboratory Breeding Base of Green‐Chemical Synthesis Technology College of Chemical Engineering Zhejiang University of Technology Hangzhou 310014 P. R. China
| | - Wei Wang
- Institute of Industrial Catalysis State Key Laboratory Breeding Base of Green‐Chemical Synthesis Technology College of Chemical Engineering Zhejiang University of Technology Hangzhou 310014 P. R. China
| | - Yinbin Wang
- Institute of Industrial Catalysis State Key Laboratory Breeding Base of Green‐Chemical Synthesis Technology College of Chemical Engineering Zhejiang University of Technology Hangzhou 310014 P. R. China
| | - Chenglong Qiu
- Institute of Industrial Catalysis State Key Laboratory Breeding Base of Green‐Chemical Synthesis Technology College of Chemical Engineering Zhejiang University of Technology Hangzhou 310014 P. R. China
| | - Chengli Mao
- Shanghai Xinli Power Equipment Research Institute Shanghai 201100 P. R. China
| | - Shengwei Deng
- Institute of Industrial Catalysis State Key Laboratory Breeding Base of Green‐Chemical Synthesis Technology College of Chemical Engineering Zhejiang University of Technology Hangzhou 310014 P. R. China
| | - Jian‐guo Wang
- Institute of Industrial Catalysis State Key Laboratory Breeding Base of Green‐Chemical Synthesis Technology College of Chemical Engineering Zhejiang University of Technology Hangzhou 310014 P. R. China
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