101
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Tang Z, Weng J, Guan Y, Zhang Y. Unexpected Large Depression of VPTT of a PNIPAM Microgel by Low Concentration of PVA. MACROMOL CHEM PHYS 2017. [DOI: 10.1002/macp.201700364] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Zhuo Tang
- State Key Laboratory of Medicinal Chemical Biology and Key Laboratory of Functional Polymer Materials; Institute of Polymer Chemistry; College of Chemistry; Nankai University and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin); Tianjin 300071 China
| | - Junying Weng
- State Key Laboratory of Medicinal Chemical Biology and Key Laboratory of Functional Polymer Materials; Institute of Polymer Chemistry; College of Chemistry; Nankai University and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin); Tianjin 300071 China
| | - Ying Guan
- State Key Laboratory of Medicinal Chemical Biology and Key Laboratory of Functional Polymer Materials; Institute of Polymer Chemistry; College of Chemistry; Nankai University and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin); Tianjin 300071 China
| | - Yongjun Zhang
- State Key Laboratory of Medicinal Chemical Biology and Key Laboratory of Functional Polymer Materials; Institute of Polymer Chemistry; College of Chemistry; Nankai University and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin); Tianjin 300071 China
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102
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Narang P, Vepuri SB, Venkatesu P, Soliman ME. An unexplored remarkable PNIPAM-osmolyte interaction study: An integrated experimental and simulation approach. J Colloid Interface Sci 2017; 504:417-428. [DOI: 10.1016/j.jcis.2017.05.109] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Revised: 05/25/2017] [Accepted: 05/27/2017] [Indexed: 11/26/2022]
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103
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Osypova A, Fustin CA, Pradier CM, Landoulsi J, Demoustier-Champagne S. Factors impacting protein adsorption on layer-by-layer assembled stimuli-responsive thin films. Eur Polym J 2017. [DOI: 10.1016/j.eurpolymj.2017.08.019] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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104
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Christau S, Moeller T, Genzer J, Koehler R, von Klitzing R. Salt-Induced Aggregation of Negatively Charged Gold Nanoparticles Confined in a Polymer Brush Matrix. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b00866] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Stephanie Christau
- Stranski
Laboratory for Physical Chemistry, Technische Universitaet Berlin, Str. des 17. Juni 124, 10623 Berlin, Germany
- Department of Chemical & Biomolecular Engineering, North Carolina State University, 911 Partners Way, Raleigh, North Carolina 27695-7905, United States
| | - Tim Moeller
- Stranski
Laboratory for Physical Chemistry, Technische Universitaet Berlin, Str. des 17. Juni 124, 10623 Berlin, Germany
| | - Jan Genzer
- Department of Chemical & Biomolecular Engineering, North Carolina State University, 911 Partners Way, Raleigh, North Carolina 27695-7905, United States
| | - Ralf Koehler
- Institute
of Soft Matter and Functional Materials (F-ISFM), Helmholtz-Zentrum Berlin, Hahn-Meitner-Platz 1, 14109 Berlin, Germany
- Landesamt fuer
Arbeitsschutz, Verbraucherschutz und Gesundheit, Muellroser Chaussee 50, 15236 Frankfurt (Oder), Germany
| | - Regine von Klitzing
- Department
of Physics, Soft Matter at Interfaces, Technische Universitaet Darmstadt, Alarich-Weiss-Strasse 10, 64287 Darmstadt, Germany
- Joint Laboratory
for Structural Research (JLSR) of Helmholtz-Zentrum Berlin fuer Materialien
und Energie (HZB), Institut für Physik, Humboldt-University Berlin, Newtonstr. 15, 12489 Berlin, Germany
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105
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Termühlen F, Kuckling D, Schönhoff M. Isothermal Titration Calorimetry to Probe the Coil-to-Globule Transition of Thermoresponsive Polymers. J Phys Chem B 2017; 121:8611-8618. [DOI: 10.1021/acs.jpcb.7b07428] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Frank Termühlen
- Institute
of Physical Chemistry, University of Muenster, Corrensstr. 28/30, D-48149 Muenster, Germany
| | - Dirk Kuckling
- Chemistry
Department, University of Paderborn, Warburger Str. 100, D-33098 Paderborn, Germany
| | - Monika Schönhoff
- Institute
of Physical Chemistry, University of Muenster, Corrensstr. 28/30, D-48149 Muenster, Germany
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106
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Kurzhals S, Gal N, Zirbs R, Reimhult E. Aggregation of thermoresponsive core-shell nanoparticles: Influence of particle concentration, dispersant molecular weight and grafting. J Colloid Interface Sci 2017; 500:321-332. [DOI: 10.1016/j.jcis.2017.04.007] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2017] [Revised: 04/01/2017] [Accepted: 04/04/2017] [Indexed: 10/19/2022]
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107
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Umapathi R, Vepuri SB, Venkatesu P, Soliman ME. Comprehensive Computational and Experimental Analysis of Biomaterial toward the Behavior of Imidazolium-Based Ionic Liquids: An Interplay between Hydrophilic and Hydrophobic Interactions. J Phys Chem B 2017; 121:4909-4922. [DOI: 10.1021/acs.jpcb.7b02208] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
| | - Suresh B. Vepuri
- K
L College of Pharmacy, K L University, Guntur 522 502, India
- Discipline
of Pharmaceutical Sciences, School of Health Sciences, University of KwaZulu-Natal (UKZN), Westville Campus, Durban 4000, South Africa
| | | | - Mahmoud E. Soliman
- Discipline
of Pharmaceutical Sciences, School of Health Sciences, University of KwaZulu-Natal (UKZN), Westville Campus, Durban 4000, South Africa
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108
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Zaibudeen A, Philip J. Multi-stimuli responsive nanofluid with easy-to-visualize structural color patterns. Colloids Surf A Physicochem Eng Asp 2017. [DOI: 10.1016/j.colsurfa.2017.01.015] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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109
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110
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Kurzhals S, Gal N, Zirbs R, Reimhult E. Controlled aggregation and cell uptake of thermoresponsive polyoxazoline-grafted superparamagnetic iron oxide nanoparticles. NANOSCALE 2017; 9:2793-2805. [PMID: 28155937 DOI: 10.1039/c6nr08654c] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Hydrophilic polymer-coated iron oxide nanoparticles are potential materials for a plethora of applications in the biotechnological field. Typical such polymers, e.g. dextran or poly(ethylene glycol), lack the ability to tailor the biological response to an environmental trigger, while common responsive polymers such as poly(N-isopropylacrylamide) or poly(acrylic acid) are not suitable for biomedical applications. We present the synthesis and characterization of superparamagnetic iron oxide nanoparticles with thermoresponsive polyoxazoline brushes grafted at unprecedented density using nitrodopamine anchor chemistry. Reversible aggregation/deaggregation is observed in water and biological medium, confirming control over the colloidal stability. Thermal switching of the solubility could only be achieved by global heating of the sample, while local magnetothermal heating did not produce a sufficiently strong temperature gradient through the brush. Varying the polymer composition allows for tuning of the lower critical solution temperature (LCST) as well as the average nanoparticle cluster size obtained upon heating. The LCST of polyoxazolines and the thermal colloidal stability are shown to be greatly affected by ion concentration, by polymer grafting density and also by the presence of serum protein; this shows that transition temperatures of free polymers in water can be very misleading for the design of polymer-coated nanomaterials for biomedical applications. Finally, the thermoresponsive SPION are shown to be non-cytotoxic and with a low cell uptake scaling with the hydration of the polymer brush, which is tuned by the polymer composition. Thus, we demonstrate that pozylated nanoparticles provide the advantages of PEG- and PNIPAM-grafted nanoparticles, but provide a tunable and more easily functionalizable platform for further development.
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Affiliation(s)
- Steffen Kurzhals
- Institute for Biologically inspired materials, Department of Nanobiotechnology, University of Natural Resources and Life Sciences, Vienna, Muthgasse 11, 1190 Vienna, Austria.
| | - Noga Gal
- Institute for Biologically inspired materials, Department of Nanobiotechnology, University of Natural Resources and Life Sciences, Vienna, Muthgasse 11, 1190 Vienna, Austria.
| | - Ronald Zirbs
- Institute for Biologically inspired materials, Department of Nanobiotechnology, University of Natural Resources and Life Sciences, Vienna, Muthgasse 11, 1190 Vienna, Austria.
| | - Erik Reimhult
- Institute for Biologically inspired materials, Department of Nanobiotechnology, University of Natural Resources and Life Sciences, Vienna, Muthgasse 11, 1190 Vienna, Austria.
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111
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de Oliveira TE, Mukherji D, Kremer K, Netz PA. Effects of stereochemistry and copolymerization on the LCST of PNIPAm. J Chem Phys 2017; 146:034904. [DOI: 10.1063/1.4974165] [Citation(s) in RCA: 81] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Tiago E. de Oliveira
- Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
- Max-Planck Institut für Polymerforschung, Ackermannweg 10, 55128 Mainz, Germany
| | - Debashish Mukherji
- Max-Planck Institut für Polymerforschung, Ackermannweg 10, 55128 Mainz, Germany
| | - Kurt Kremer
- Max-Planck Institut für Polymerforschung, Ackermannweg 10, 55128 Mainz, Germany
| | - Paulo A. Netz
- Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
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112
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Moghadam S, Larson RG. Assessing the Efficacy of Poly(N-isopropylacrylamide) for Drug Delivery Applications Using Molecular Dynamics Simulations. Mol Pharm 2017; 14:478-491. [PMID: 28026965 DOI: 10.1021/acs.molpharmaceut.6b00942] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
All-atom molecular dynamic simulations (AA-MD) are performed for aqueous solutions of hydrophobic drug molecules (phenytoin) with model polymer excipients, namely, (1) N-isopropylacrylamide, (pNIPAAm), (2) pNIPAAm-co-acrylamide (Am), and (3) pNIPAAm-co-dimethylacrylamide (DMA). After validating the force field parameters using the well-known lower critical solution behavior of pNIPAAm, we simulate the polymer-drug complex in water and its behavior at temperatures below (295 K) and above the LCST (310 K). Using radial distribution functions, we find that there is an optimum comonomer molar fraction of around 20-30% DMA at which interaction with phenytoin drug molecules is strongest, consistent with recent experimental findings. The results provide evidence that molecular simulations are able to provide guidance in the optimization of novel polymer excipients for drug release.
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Affiliation(s)
- Soroush Moghadam
- Department of Mechanical Engineering, University of Michigan , Ann Arbor, Michigan 48109-2136, United States
| | - Ronald G Larson
- Department of Chemical Engineering, University of Michigan , Ann Arbor, Michigan 48109-2136, United States
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113
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Liu Z, Wickramasinghe SR, Qian X. Ion-specificity in protein binding and recovery for the responsive hydrophobic poly(vinylcaprolactam) ligand. RSC Adv 2017. [DOI: 10.1039/c7ra06022j] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
The conformational switch between the hydrophobic state and hydrophilic state of thermo-responsive poly(vinylcaprolactam) (PVCL) has great potential for protein purification as a hydrophobic interaction chromatography ligand.
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Affiliation(s)
- Zizhao Liu
- Department of Chemical Engineering
- University of Arkansas
- Fayetteville
- USA
| | | | - Xianghong Qian
- Department of Biomedical Engineering
- University of Arkansas
- Fayetteville
- USA
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114
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Liu Z, Wickramasinghe SR, Qian X. The architecture of responsive polymeric ligands on protein binding and recovery. RSC Adv 2017. [DOI: 10.1039/c7ra01499f] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Ligand design and optimization are critical for protein purification during downstream processing.
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Affiliation(s)
- Zizhao Liu
- Department of Chemical Engineering
- University of Arkansas
- Fayetteville
- USA
| | | | - Xianghong Qian
- Department of Biomedical Engineering
- University of Arkansas
- Fayetteville
- USA
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115
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Liu L, Kou R, Liu G. Ion specificities of artificial macromolecules. SOFT MATTER 2016; 13:68-80. [PMID: 27906410 DOI: 10.1039/c6sm01773h] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Artificial macromolecules are well-defined synthetic polymers, with a relatively simple structure as compared to naturally occurring macromolecules. This review focuses on the ion specificities of artifical macromolecules. Ion specificities are influenced by solvent-mediated indirect ion-macromolecule interactions and also by direct ion-macromolecule interactions. In aqueous solutions, the role of water-mediated indirect ion-macromolecule interactions will be discussed. The addition of organic solvents to aqueous solutions significantly changes the ion specificities due to the formation of water-organic solvent complexes. For direct ion-macromolecule interactions, we will discuss specific ion-pairing interactions for charged macromolecules and specific ion-neutral site interactions for uncharged macromolecules. When the medium conditions change from dilute solutions to crowded environments, the ion specificities can be modified by either the volume exclusion effect, the variation of dielectric constant, or the interactions between ions, macromolecules, and crowding agents.
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Affiliation(s)
- Lvdan Liu
- Department of Chemical Physics, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, P. R. China 230026.
| | - Ran Kou
- Department of Chemical Physics, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, P. R. China 230026.
| | - Guangming Liu
- Department of Chemical Physics, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, P. R. China 230026.
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116
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Kang Y, Joo H, Kim JS. Collapse–Swelling Transitions of a Thermoresponsive, Single Poly(N-isopropylacrylamide) Chain in Water. J Phys Chem B 2016; 120:13184-13192. [DOI: 10.1021/acs.jpcb.6b09165] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yunwon Kang
- Department of Chemistry and
Nanoscience, Ewha Womans University, Seoul 03760, Republic of Korea
| | - Heesun Joo
- Department of Chemistry and
Nanoscience, Ewha Womans University, Seoul 03760, Republic of Korea
| | - Jun Soo Kim
- Department of Chemistry and
Nanoscience, Ewha Womans University, Seoul 03760, Republic of Korea
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117
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Affiliation(s)
- Anh Vu
- Ralph E. Martin Department of Chemical Engineering, University of Arkansas, Fayetteville, Arkansas, USA
| | - Xianghong Qian
- Department of Biomedical Engineering, University of Arkansas, Fayetteville, Arkansas, USA
| | - S. Ranil Wickramasinghe
- Ralph E. Martin Department of Chemical Engineering, University of Arkansas, Fayetteville, Arkansas, USA
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118
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Bharadwaj S, Kumar PBS, Komura S, Deshpande AP. Spherically Symmetric Solvent is Sufficient to Explain the LCST Mechanism in Polymer Solutions. MACROMOL THEOR SIMUL 2016. [DOI: 10.1002/mats.201600073] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Swaminath Bharadwaj
- Department of Chemical Engineering; Indian Institute of Technology Madras; Chennai 600036 India
| | | | - Shigeyuki Komura
- Department of Chemistry; Graduate School of Science and Engineering; Tokyo Metropolitan University; Tokyo 192-0397 Japan
| | - Abhijit P. Deshpande
- Department of Chemical Engineering; Indian Institute of Technology Madras; Chennai 600036 India
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119
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Su W, Yang M, Zhao K, Ngai T. Influence of Charged Groups on the Structure of Microgel and Volume Phase Transition by Dielectric Analysis. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b00809] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Wenjuan Su
- College
of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Man Yang
- College
of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Kongshuang Zhao
- College
of Chemistry, Beijing Normal University, Beijing 100875, China
| | - To Ngai
- Department
of Chemistry, The Chinese University of Hong Kong, Shatin, N. T. Hong Kong, China
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120
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Du H, Liu Z, Jennings R, Qian X. The effects of salt ions on the dynamics and thermodynamics of lysozyme unfolding. SEP SCI TECHNOL 2016. [DOI: 10.1080/01496395.2016.1229336] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Hongbo Du
- Department of Biomedical Engineering, University of Arkansas, Fayetteville, Arkansas, USA
| | - Zizhao Liu
- Department of Chemical Engineering, University of Arkansas, Fayetteville, Arkansas, USA
| | - Renee Jennings
- Department of Biomedical Engineering, University of Arkansas, Fayetteville, Arkansas, USA
| | - Xianghong Qian
- Department of Biomedical Engineering, University of Arkansas, Fayetteville, Arkansas, USA
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121
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Giesecke M, Hallberg F, Fang Y, Stilbs P, Furó I. Binding of Monovalent and Multivalent Metal Cations to Polyethylene Oxide in Methanol Probed by Electrophoretic and Diffusion NMR. J Phys Chem B 2016; 120:10358-10366. [PMID: 27622602 DOI: 10.1021/acs.jpcb.6b08923] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Complex formation in methanol between monodisperse polyethylene oxide (PEO) and a large set of cations was studied by measuring the effective charge acquired by PEO upon complexation. Quantitative data were obtained at a low ionic strength of 2 mM (for some salts, also between 0.5 and 6 mM) by a combination of diffusion nuclear magnetic resonance (NMR) and electrophoretic NMR experiments. For strongly complexing cations, the magnitude of the acquired effective charge was on the order of 1 cation per 100 monomer units. For monovalent cations, the relative strength of binding varies as Na+ < K+ ≈ Rb+ ≈ Cs+, whereas Li+ exhibited no significant binding. All polyvalent cations bind very weakly, except for Ba2+ that exhibited strong binding. Anions do not bind, as is shown by the lack of response to the chemical nature of anionic species (perchlorate, iodide, or acetate). Diffusion experiments directly show that the acetate anion with monovalent cations does not associate with PEO. Considering all cations, we find that the observed binding does not follow any Hofmeister order. Instead, binding occurs below a critical surface charge density, which indicates that the degree of complexation is defined by the solvation shell. A large solvation shell prevents the binding of most multivalent ions.
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Affiliation(s)
- Marianne Giesecke
- Division of Applied Physical Chemistry, Department of Chemistry, KTH Royal Institute of Technology , SE-10044 Stockholm, Sweden
| | - Fredrik Hallberg
- Division of Applied Physical Chemistry, Department of Chemistry, KTH Royal Institute of Technology , SE-10044 Stockholm, Sweden
| | - Yuan Fang
- Division of Applied Physical Chemistry, Department of Chemistry, KTH Royal Institute of Technology , SE-10044 Stockholm, Sweden
| | - Peter Stilbs
- Division of Applied Physical Chemistry, Department of Chemistry, KTH Royal Institute of Technology , SE-10044 Stockholm, Sweden
| | - István Furó
- Division of Applied Physical Chemistry, Department of Chemistry, KTH Royal Institute of Technology , SE-10044 Stockholm, Sweden
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122
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Liu Z, Wickramasinghe SR, Qian X. Membrane chromatography for protein purifications from ligand design to functionalization. SEP SCI TECHNOL 2016. [DOI: 10.1080/01496395.2016.1223133] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Zizhao Liu
- Department of Chemical Engineering, University of Arkansas, Fayetteville, Arkansas, USA
| | | | - Xianghong Qian
- Department of Biomedical Engineering, University of Arkansas, Fayetteville, Arkansas, USA
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123
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Qian X, Yang Q, Vu A, Wickramasinghe SR. Localized Heat Generation from Magnetically Responsive Membranes. Ind Eng Chem Res 2016. [DOI: 10.1021/acs.iecr.6b01820] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Xianghong Qian
- Department of Biomedical Engineering, ‡Ralph E Martin Department
of Chemical
Engineering, University of Arkansas, Fayetteville, Arkansas 72701, United States
| | - Qian Yang
- Department of Biomedical Engineering, ‡Ralph E Martin Department
of Chemical
Engineering, University of Arkansas, Fayetteville, Arkansas 72701, United States
| | - Anh Vu
- Department of Biomedical Engineering, ‡Ralph E Martin Department
of Chemical
Engineering, University of Arkansas, Fayetteville, Arkansas 72701, United States
| | - S. Ranil Wickramasinghe
- Department of Biomedical Engineering, ‡Ralph E Martin Department
of Chemical
Engineering, University of Arkansas, Fayetteville, Arkansas 72701, United States
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124
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Murdoch TJ, Humphreys BA, Willott JD, Gregory KP, Prescott SW, Nelson A, Wanless EJ, Webber GB. Specific Anion Effects on the Internal Structure of a Poly(N-isopropylacrylamide) Brush. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b01001] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Timothy J. Murdoch
- Priority
Research Centre for Advanced Particle Processing and Transport, University of Newcastle, Callaghan, NSW 2308, Australia
| | - Ben A. Humphreys
- Priority
Research Centre for Advanced Particle Processing and Transport, University of Newcastle, Callaghan, NSW 2308, Australia
| | - Joshua D. Willott
- Priority
Research Centre for Advanced Particle Processing and Transport, University of Newcastle, Callaghan, NSW 2308, Australia
| | - Kasimir P. Gregory
- Priority
Research Centre for Advanced Particle Processing and Transport, University of Newcastle, Callaghan, NSW 2308, Australia
| | - Stuart W. Prescott
- School
of Chemical Engineering, UNSW Australia, UNSW Sydney, NSW 2052, Australia
| | - Andrew Nelson
- Australian Nuclear
Science and Technology Organisation, Lucas Heights, NSW 2234, Australia
| | - Erica J. Wanless
- Priority
Research Centre for Advanced Particle Processing and Transport, University of Newcastle, Callaghan, NSW 2308, Australia
| | - Grant B. Webber
- Priority
Research Centre for Advanced Particle Processing and Transport, University of Newcastle, Callaghan, NSW 2308, Australia
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125
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Lam CN, Yao H, Olsen BD. The Effect of Protein Electrostatic Interactions on Globular Protein–Polymer Block Copolymer Self-Assembly. Biomacromolecules 2016; 17:2820-9. [DOI: 10.1021/acs.biomac.6b00522] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Christopher N. Lam
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Helen Yao
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Bradley D. Olsen
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
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126
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Ng WS, Forbes E, Franks GV, Connal LA. Xanthate-Functional Temperature-Responsive Polymers: Effect on Lower Critical Solution Temperature Behavior and Affinity toward Sulfide Surfaces. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:7443-7451. [PMID: 27434760 DOI: 10.1021/acs.langmuir.6b00211] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Xanthate-functional polymers represent an exciting opportunity to provide temperature-responsive materials with the ability to selectively attach to specific metals, while also modifying the lower critical solution temperature (LCST) behavior. To investigate this, random copolymers of poly(N-isopropylacrylamide) (PNIPAM) with xanthate incorporations ranging from 2 to 32% were prepared via free radical polymerization. Functionalization with 2% xanthate increased the LCST by 5 °C relative to the same polymer without xanthate. With increasing xanthate composition, the transition temperature increased and the transition range broadened until a critical composition of the hydrophilic xanthate groups (≥18%) where the transition disappeared completely. The adsorption of the polymers at room temperature onto chalcopyrite (CuFeS2) surfaces increased with xanthate composition, while adsorption onto quartz (SiO2) was negligible. These findings demonstrate the affinity of these functional smart polymers toward copper iron sulfide relative to quartz surfaces, presumably due to the interactions between xanthate and specific metal centers.
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Affiliation(s)
- Wei Sung Ng
- Chemical and Biomolecular Engineering, University of Melbourne , Parkville, VIC 3010, Australia
- CSIRO Mineral Resources Flagship, Clayton, VIC 3168, Australia
| | | | - George V Franks
- Chemical and Biomolecular Engineering, University of Melbourne , Parkville, VIC 3010, Australia
| | - Luke A Connal
- Chemical and Biomolecular Engineering, University of Melbourne , Parkville, VIC 3010, Australia
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127
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Zhang R, Bu Y. Bifurcate localization modes of excess electron in aqueous Ca(2+)amide solution revealed by ab initio molecular dynamics simulation: towards hydrated electron versus hydrated amide anion. Phys Chem Chem Phys 2016; 18:18868-79. [PMID: 27351489 DOI: 10.1039/c6cp03552c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this work, we conduct ab initio molecular dynamics simulations on the localization dynamics of an excess electron (EE) in acetamide/Ca(2+) aqueous solutions with three different interaction modes of Ca(2+) with acetamide: tight contact, solvent-shared state, and separated interaction. The simulated results reveal that an EE could exhibit two different localization behaviors in these acetamide/Ca(2+) aqueous solutions depending on different amideCa(2+) interactions featuring different contact distances. For the tight contact and solvent-shared state of amideCa(2+) solutions, vertically injected diffuse EEs follow different mechanisms with different dynamics, forming a cavity-shaped hydrated electron or a hydrated amide anion, respectively. Meanwhile, for the separated state, only one localization pattern of a vertically injected diffuse EE towards the formation of hydrated amide anion is observed. The hindrance of hydrated Ca(2+) and the attraction of the hydrated amide group originating from its polarity and low energy π* orbital are the main driving forces. Additionally, different EE localization modes have different effects on the interaction between the amide group and Ca(2+) in turn. This work provides an important basis for further understanding the mechanisms and dynamics of localizations/transfers of radiation-produced EEs and associated EE-induced lesions and damage to biological species in real biological environments or other aqueous solutions.
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Affiliation(s)
- Ru Zhang
- Institute of Theoretical Chemistry, School of Chemistry and Chemical Engineering, Shandong University, 250100, P. R. China.
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128
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Balos V, Kim H, Bonn M, Hunger J. Hofmeister-Effekte unter der Lupe: Die direkte Anion-Amid-Bindung ist schwächer als die Kation-Amid-Bindung. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201602769] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Vasileios Balos
- Abteilung für molekulare Spektroskopie; Max-Planck-Institut für Polymerforschung; Ackermannweg 10 55128 Mainz Deutschland
| | - Heejae Kim
- Abteilung für molekulare Spektroskopie; Max-Planck-Institut für Polymerforschung; Ackermannweg 10 55128 Mainz Deutschland
| | - Mischa Bonn
- Abteilung für molekulare Spektroskopie; Max-Planck-Institut für Polymerforschung; Ackermannweg 10 55128 Mainz Deutschland
| | - Johannes Hunger
- Abteilung für molekulare Spektroskopie; Max-Planck-Institut für Polymerforschung; Ackermannweg 10 55128 Mainz Deutschland
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129
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Balos V, Kim H, Bonn M, Hunger J. Dissecting Hofmeister Effects: Direct Anion-Amide Interactions Are Weaker than Cation-Amide Binding. Angew Chem Int Ed Engl 2016; 55:8125-8. [DOI: 10.1002/anie.201602769] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2016] [Indexed: 11/12/2022]
Affiliation(s)
- Vasileios Balos
- Department for Molecular Spectroscopy; Max Planck Institute for Polymer Research; Ackermannweg 10 55128 Mainz Germany
| | - Heejae Kim
- Department for Molecular Spectroscopy; Max Planck Institute for Polymer Research; Ackermannweg 10 55128 Mainz Germany
| | - Mischa Bonn
- Department for Molecular Spectroscopy; Max Planck Institute for Polymer Research; Ackermannweg 10 55128 Mainz Germany
| | - Johannes Hunger
- Department for Molecular Spectroscopy; Max Planck Institute for Polymer Research; Ackermannweg 10 55128 Mainz Germany
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130
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Zhang C, Moonshi SS, Peng H, Puttick S, Reid J, Bernardi S, Searles DJ, Whittaker AK. Ion-Responsive 19F MRI Contrast Agents for the Detection of Cancer Cells. ACS Sens 2016. [DOI: 10.1021/acssensors.6b00216] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Cheng Zhang
- ARC
Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Shehzahdi Shebbrin Moonshi
- ARC
Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Hui Peng
- ARC
Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Simon Puttick
- ARC
Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of Queensland, Brisbane, Queensland 4072, Australia
| | | | | | | | - Andrew K. Whittaker
- ARC
Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of Queensland, Brisbane, Queensland 4072, Australia
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131
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Chiessi E, Paradossi G. Influence of Tacticity on Hydrophobicity of Poly(N-isopropylacrylamide): A Single Chain Molecular Dynamics Simulation Study. J Phys Chem B 2016; 120:3765-76. [PMID: 27031404 DOI: 10.1021/acs.jpcb.6b01339] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Several pieces of experimental evidence show that the water affinity of poly(N-isopropylacrylamide), PNIPAM, decreases with the increase of the degree of isotacticity. To give a rationale to such effect we carried out atomistic molecular dynamics simulations of PNIPAM 30-mers with content of meso dyads, m, of 45% and 59%, assuming a Bernoullian dyad distribution. The single chain behavior of these stereoisomers in water was modeled at 283 and 323 K, i.e., below and above the lower critical solution temperature, LCST. Simulation results show that the dyad composition has influence on size and conformation of the oligomer below the LCST, the isotactic-rich stereoisomer preferring conformations with lower radius of gyration. With reference to the cooperative hydration model of PNIPAM, we analyzed the organization and the dynamics of water in the surroundings of the polymer. Below the LCST the number of hydrogen bonds per water molecule in the first hydration shell and the water surface concentration around PNIPAM are affected by the meso/racemo dyad ratio, showing the higher hydrophobicity of the isotactic-rich system. Above the LCST the subtle effects leading to the modulation of conformation and hydration by means of tacticity are overtaken, and the chain collapse is observed for both systems up to a similar globular state. The comparison of simulation findings of the m 45% stereoisomer with available experimental results of atactic PNIPAM highlights additional molecular details of this macromolecule in aqueous environment. The characteristic time for motion of water molecules in the PNIPAM first hydration shell at 283 K is about 34 ps, in agreement with the experimental value.
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Affiliation(s)
- Ester Chiessi
- Department of Chemical Sciences and Technologies, University of Rome Tor Vergata , Via della Ricerca Scientifica I, 00133 Rome, Italy
| | - Gaio Paradossi
- Department of Chemical Sciences and Technologies, University of Rome Tor Vergata , Via della Ricerca Scientifica I, 00133 Rome, Italy
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132
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Sasaki S. Dynamical Properties of N-Isopropylacrylamide Molecule in Water Revealed by (1)H NMR Studies. J Phys Chem B 2016; 120:184-92. [PMID: 26672807 DOI: 10.1021/acs.jpcb.5b09879] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The hydration of alkyl-amide molecules in water is very important for understanding their solubility in water, which related to the phase behavior of polyamides including protein molecules in water. The (1)H NMR signals of N-isopropylacrylamide (NIPA) in water were investigated for the purpose to reveal the hydration properties of NIPA in the aqueous HCl solutions, which change the phase behavior of aqueous NIPA solutions with HCl concentration as reported previously (J. Phys. Chem. B 2011, 115, 12905-12910). The following observations were revealed by the present studies. (1) The spin-spin coupling of the amide proton with the methyne proton in the HCl solution was observed when a half width of amide peak (∼Δν) was less than about 10 Hz, but it was not when Δν was greater than 10 Hz. (2) The Δν value of amide proton increased with an increase in a mole ratio of H2O to NIPA (rH2O) or with enlargement of the protonated hydration shell, which reduced the energy gap of the cis- and trans-conformations. (3) The Δν value of H2O and its rH2O dependence in the 3 M HCl solution changed drastically between rH2O = 4.0 and 4.7, in which the hydrophilic hydration shell neighboring the amide extended to form the hydrophobic hydration shell. (4) The Δν of methyl proton decreased monotonously with rH2O. This indicates an increase of the rotational mobility of methyl groups in the hydration shell. These results indicate that the elongating lifetime of cis-conformation of amide coupled with the shortened lifetime of double bonding C-N in amide induces the amide-methyne spin-spin-coupling transition and that the cationic state of amide stabilizes the hydrophobic hydration to induce the rotational free motion of amide C-N and the methyl groups.
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Affiliation(s)
- Shigeo Sasaki
- Department of Chemistry, Faculty of Sciences, Kyushu University , 33 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan
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133
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Boerman MA, Van der Laan HL, Bender JCME, Hoogenboom R, Jansen JA, Leeuwenburgh SC, Van Hest JCM. Synthesis of pH- and thermoresponsive poly(2-n
-propyl-2-oxazoline) based copolymers. ACTA ACUST UNITED AC 2016. [DOI: 10.1002/pola.28011] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Marcel A. Boerman
- Radboud University Nijmegen, Institute for Molecules and Materials (IMM); Heyendaalseweg 135, 6525 AJ Nijmegen The Netherlands
- Radboudumc; Department of Biomaterials; 6500 HB Nijmegen The Netherlands
- Bender Analytical Holding B.V; Parksesteeg 8, 6611 KH Overasselt The Netherlands
| | - Harry L. Van der Laan
- Radboud University Nijmegen, Institute for Molecules and Materials (IMM); Heyendaalseweg 135, 6525 AJ Nijmegen The Netherlands
| | | | - Richard Hoogenboom
- Supramolecular Chemistry Group, Department of Organic and Macromolecular Chemistry, Ghent University; Krijgslaan 281 S4, 9000 Ghent Belgium
| | - John A. Jansen
- Radboudumc; Department of Biomaterials; 6500 HB Nijmegen The Netherlands
| | | | - Jan C. M. Van Hest
- Radboud University Nijmegen, Institute for Molecules and Materials (IMM); Heyendaalseweg 135, 6525 AJ Nijmegen The Netherlands
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134
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Micciulla S, Michalowsky J, Schroer MA, Holm C, von Klitzing R, Smiatek J. Concentration dependent effects of urea binding to poly(N-isopropylacrylamide) brushes: a combined experimental and numerical study. Phys Chem Chem Phys 2016; 18:5324-35. [DOI: 10.1039/c5cp07544k] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The concentration-dependent binding of urea to PNIPAM influences the chain conformation as a result of the subtle interplay between hydration properties and urea repartition around the polymer surface.
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Affiliation(s)
- Samantha Micciulla
- Stranski-Laboratorium
- Institut für Chemie
- Technische Universität Berlin
- D-10623 Berlin
- Germany
| | - Julian Michalowsky
- Institut für Computerphysik
- Universität Stuttgart
- D-70569 Stuttgart
- Germany
| | - Martin A. Schroer
- Deutsches Elektronen-Synchrotron DESY
- D-22607 Hamburg
- Germany
- The Hamburg Centre for Ultrafast Imaging (CUI)
- D-22761 Hamburg
| | - Christian Holm
- Institut für Computerphysik
- Universität Stuttgart
- D-70569 Stuttgart
- Germany
| | - Regine von Klitzing
- Stranski-Laboratorium
- Institut für Chemie
- Technische Universität Berlin
- D-10623 Berlin
- Germany
| | - Jens Smiatek
- Institut für Computerphysik
- Universität Stuttgart
- D-70569 Stuttgart
- Germany
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135
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Schroer MA, Michalowsky J, Fischer B, Smiatek J, Grübel G. Stabilizing effect of TMAO on globular PNIPAM states: preferential attraction induces preferential hydration. Phys Chem Chem Phys 2016; 18:31459-31470. [DOI: 10.1039/c6cp05991k] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
We study the effect of the organic co-solute trimethylamine N-oxide (TMAO) on the volume phase transition of microgel particles made from poly(N-isopropylacrylamide) (PNIPAM) using dynamic light scattering (DLS) and all-atom molecular dynamics (MD) simulations.
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Affiliation(s)
- Martin A. Schroer
- Deutsches Elektronen-Synchrotron DESY
- 22607 Hamburg
- Germany
- The Hamburg Centre for Ultrafast Imaging (CUI)
- 22761 Hamburg
| | | | - Birgit Fischer
- Institut für Physikalische Chemie
- Universität Hamburg
- 20146 Hamburg
- Germany
| | - Jens Smiatek
- Institut für Computerphysik
- Universität Stuttgart
- 70569 Stuttgart
- Germany
| | - Gerhard Grübel
- Deutsches Elektronen-Synchrotron DESY
- 22607 Hamburg
- Germany
- The Hamburg Centre for Ultrafast Imaging (CUI)
- 22761 Hamburg
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136
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Chen S, Zhang Y, Wang K, Zhou H, Zhang W. N-Ester-substituted polyacrylamides with a tunable lower critical solution temperature (LCST): the N-ester-substitute dependent thermoresponse. Polym Chem 2016. [DOI: 10.1039/c6py00515b] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
New thermoresponsive polymers ofN-ester-substituted polyacrylamides were discovered, and theN-ester-substitute exerting a great influence on the solution property was demonstrated.
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Affiliation(s)
- Shengli Chen
- Key Laboratory of Functional Polymer Materials of the Ministry of Education
- Institute of Polymer Chemistry
- Nankai University
- Tianjin 300071
- China
| | - Yuan Zhang
- Key Laboratory of Functional Polymer Materials of the Ministry of Education
- Institute of Polymer Chemistry
- Nankai University
- Tianjin 300071
- China
| | - Ke Wang
- Key Laboratory of Functional Polymer Materials of the Ministry of Education
- Institute of Polymer Chemistry
- Nankai University
- Tianjin 300071
- China
| | - Heng Zhou
- Key Laboratory of Functional Polymer Materials of the Ministry of Education
- Institute of Polymer Chemistry
- Nankai University
- Tianjin 300071
- China
| | - Wangqing Zhang
- Key Laboratory of Functional Polymer Materials of the Ministry of Education
- Institute of Polymer Chemistry
- Nankai University
- Tianjin 300071
- China
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137
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Wang LH, Wu T, Zhang Z, You YZ. Unconventional Transitions of Poly(N-isopropylacrylamide) upon Heating in the Presence of Multiple Noncovalent Interactions. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b02106] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Long-Hai Wang
- Key Lab
of Soft Matter Chemistry,
Chinese Academy of Sciences, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, Anhui, China
| | - Ting Wu
- Key Lab
of Soft Matter Chemistry,
Chinese Academy of Sciences, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, Anhui, China
| | - Ze Zhang
- Key Lab
of Soft Matter Chemistry,
Chinese Academy of Sciences, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, Anhui, China
| | - Ye-Zi You
- Key Lab
of Soft Matter Chemistry,
Chinese Academy of Sciences, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, Anhui, China
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138
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Abbott LJ, Stevens MJ. A temperature-dependent coarse-grained model for the thermoresponsive polymer poly(N-isopropylacrylamide). J Chem Phys 2015; 143:244901. [DOI: 10.1063/1.4938100] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
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139
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Du H, Qian X. The hydration properties of carboxybetaine zwitterion brushes. J Comput Chem 2015; 37:877-85. [DOI: 10.1002/jcc.24234] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2015] [Revised: 09/30/2015] [Accepted: 10/04/2015] [Indexed: 01/23/2023]
Affiliation(s)
- Hongbo Du
- Department of Biomedical Engineering; University of Arkansas; Fayetteville Arkansas 72701
| | - Xianghong Qian
- Department of Biomedical Engineering; University of Arkansas; Fayetteville Arkansas 72701
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140
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Li D, Chen Y, Liu Z. Boronate affinity materials for separation and molecular recognition: structure, properties and applications. Chem Soc Rev 2015; 44:8097-123. [PMID: 26377373 DOI: 10.1039/c5cs00013k] [Citation(s) in RCA: 373] [Impact Index Per Article: 41.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Boronate affinity materials, as unique sorbents, have emerged as important media for the selective separation and molecular recognition of cis-diol-containing compounds. With the introduction of boronic acid functionality, boronate affinity materials exhibit several significant advantages, including broad-spectrum selectivity, reversible covalent binding, pH-controlled capture/release, fast association/desorption kinetics, and good compatibility with mass spectrometry. Because cis-diol-containing biomolecules, including nucleosides, saccharides, glycans, glycoproteins and so on, are the important targets in current research frontiers such as metabolomics, glycomics and proteomics, boronate affinity materials have gained rapid development and found increasing applications in the last decade. In this review, we critically survey recent advances in boronate affinity materials. We focus on fundamental considerations as well as important progress and new boronate affinity materials reported in the last decade. We particularly discuss on the effects of the structure of boronate ligands and supporting materials on the properties of boronate affinity materials, such as binding pH, affinity, selectivity, binding capacity, tolerance for interference and so on. A variety of promising applications, including affinity separation, proteomics, metabolomics, disease diagnostics and aptamer selection, are introduced with main emphasis on how boronate affinity materials can solve the issues in the applications and what merits boronate affinity materials can provide.
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Affiliation(s)
- Daojin Li
- State Key Laboratory of Analytical Chemistry for Life Science and Collaborative Innovation Center of Chemistry for Life Sciences, School of Chemistry and Chemical Engineering, Nanjing University, 22 Hankou Road, Nanjing 210093, China.
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141
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Hiruta Y, Nagumo Y, Suzuki Y, Funatsu T, Ishikawa Y, Kanazawa H. The effects of anionic electrolytes and human serum albumin on the LCST of poly( N -isopropylacrylamide)-based temperature-responsive copolymers. Colloids Surf B Biointerfaces 2015; 132:299-304. [DOI: 10.1016/j.colsurfb.2015.05.032] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Revised: 04/28/2015] [Accepted: 05/18/2015] [Indexed: 01/01/2023]
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142
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Pérez-Fuentes L, Drummond C, Faraudo J, Bastos-González D. Anions make the difference: insights from the interaction of big cations and anions with poly(N-isopropylacrylamide) chains and microgels. SOFT MATTER 2015; 11:5077-5086. [PMID: 26027700 DOI: 10.1039/c5sm00750j] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Minute concentrations of big hydrophobic ions have the ability to induce substantial effects in soft matter systems, including novel phases in lipid layers, giant charge inversion in colloids and nanostructuration in polymer surfaces in contact with water. The effects are so strong that the term "soft matter disruptors" was coined to describe their deep impact on interfaces, which goes far beyond that found by using the classical ions considered in lyotropic (Hofmeister) sequences. In these effects, solvation thermodynamics plays a fundamental role. Interestingly, it is possible to obtain big hydrophobic cations and anions with an almost identical size and structure (e.g. Ph4B(-), Ph4As(+)), which only differ in their central atom. Here we employ different techniques (Molecular Dynamics (MD) simulations, electrophoretic mobility and Atomic Force Microscopy (AFM)) to demonstrate the dramatic differences in the interaction of Ph4B(-) and Ph4As(+) with poly(N-isopropylacrylamide) (PNIPAM), a thermoresponsive polymer with expanded (well hydrated) and collapsed (poorly hydrated) states. Although both ions interact strongly with neutral PNIPAM chains and cationic or anionic PNIPAM microgels in the collapsed states, the effects of Ph4B(-) on PNIPAM are always substantially stronger than the effects of Ph4As(+). MD simulations predict that ion-PNIPAM free energy of interaction is four times larger for Ph4B(-) than for Ph4As(+). Electrokinetic and AFM experiments show that, acting as counter-ions, both ions are able to invert the charge of anionic or cationic PNIPAM microgels at minute concentrations, but the charge inversion due to Ph4B(-) is much larger than that obtained with Ph4As(+). Therefore, even for big ions of identical size, shape and valence, the affinity of anions and cations for interfaces is intrinsically different.
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Affiliation(s)
- Leonor Pérez-Fuentes
- Biocolloid and Fluid Physics Group, Department of Applied Physics, University of Granada, Av. Fuentenueva S/N, E-18071 Granada, Spain.
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143
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Reddy PM, Umapathi R, Venkatesu P. Interactions of ionic liquids with hydration layer of poly(N-isopropylacrylamide): comprehensive analysis of biophysical techniques results. Phys Chem Chem Phys 2015; 16:10708-18. [PMID: 24756081 DOI: 10.1039/c4cp00010b] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Here, we report comprehensive analysis of biophysical technique results for the influence of ionic liquids (ILs) containing the same cation, 1-butyl-3-methylimidazolium (Bmim(+)), and commonly used anions such as SCN(-), BF4(-), I(-), Br(-), Cl(-), CH3COO(-) and HSO4(-) on the phase transition temperature of poly(N-isopropylacrylamide) (PNIPAM) aqueous solution. Further, the effect of these ILs on bovine serum albumin (BSA) has also been studied. The modulations in UV-visible (UV-vis) absorption spectra, fluorescence intensity spectra, viscosity (η), hydrodynamic diameter (dH), Fourier transform infrared (FTIR) spectra and scanning electron microscopy (SEM) micrographs clearly reflect the change in the hydration state of PNIPAM in the presence of ILs. The observed single phase transition of PNIPAM aqueous solution at higher concentration of IL is the result of weak ion-ion pair interactions in IL.
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144
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Zhang C, Peng H, Puttick S, Reid J, Bernardi S, Searles DJ, Whittaker AK. Conformation of Hydrophobically Modified Thermoresponsive Poly(OEGMA-co-TFEA) across the LCST Revealed by NMR and Molecular Dynamics Studies. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b00641] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Cheng Zhang
- Australian Institute for Bioengineering and Nanotechnology, ‡School of Chemistry
and Molecular Biosciences, and §Centre for Advanced Imaging, The University of Queensland, Brisbane, Qld 4072, Australia
- ARC Centre of Excellence
in Convergent Bio-Nano Science and Technology, The University of Queensland, Brisbane, Qld 4072, Australia
| | - Hui Peng
- Australian Institute for Bioengineering and Nanotechnology, ‡School of Chemistry
and Molecular Biosciences, and §Centre for Advanced Imaging, The University of Queensland, Brisbane, Qld 4072, Australia
- ARC Centre of Excellence
in Convergent Bio-Nano Science and Technology, The University of Queensland, Brisbane, Qld 4072, Australia
| | - Simon Puttick
- Australian Institute for Bioengineering and Nanotechnology, ‡School of Chemistry
and Molecular Biosciences, and §Centre for Advanced Imaging, The University of Queensland, Brisbane, Qld 4072, Australia
- ARC Centre of Excellence
in Convergent Bio-Nano Science and Technology, The University of Queensland, Brisbane, Qld 4072, Australia
| | - James Reid
- Australian Institute for Bioengineering and Nanotechnology, ‡School of Chemistry
and Molecular Biosciences, and §Centre for Advanced Imaging, The University of Queensland, Brisbane, Qld 4072, Australia
- ARC Centre of Excellence
in Convergent Bio-Nano Science and Technology, The University of Queensland, Brisbane, Qld 4072, Australia
| | - Stefano Bernardi
- Australian Institute for Bioengineering and Nanotechnology, ‡School of Chemistry
and Molecular Biosciences, and §Centre for Advanced Imaging, The University of Queensland, Brisbane, Qld 4072, Australia
- ARC Centre of Excellence
in Convergent Bio-Nano Science and Technology, The University of Queensland, Brisbane, Qld 4072, Australia
| | - Debra J. Searles
- Australian Institute for Bioengineering and Nanotechnology, ‡School of Chemistry
and Molecular Biosciences, and §Centre for Advanced Imaging, The University of Queensland, Brisbane, Qld 4072, Australia
- ARC Centre of Excellence
in Convergent Bio-Nano Science and Technology, The University of Queensland, Brisbane, Qld 4072, Australia
| | - Andrew K. Whittaker
- Australian Institute for Bioengineering and Nanotechnology, ‡School of Chemistry
and Molecular Biosciences, and §Centre for Advanced Imaging, The University of Queensland, Brisbane, Qld 4072, Australia
- ARC Centre of Excellence
in Convergent Bio-Nano Science and Technology, The University of Queensland, Brisbane, Qld 4072, Australia
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145
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Darvishmanesh S, Qian X, Wickramasinghe SR. Responsive membranes for advanced separations. Curr Opin Chem Eng 2015. [DOI: 10.1016/j.coche.2015.04.002] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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146
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Min SH, Kwak SK, Kim BS. Atomistic simulation for coil-to-globule transition of poly(2-dimethylaminoethyl methacrylate). SOFT MATTER 2015; 11:2423-2433. [PMID: 25662300 DOI: 10.1039/c4sm02242d] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The coil-to-globule transition of poly(2-dimethylaminoethyl methacrylate) (PDMAEMA) in aqueous solution was investigated by all-atomistic molecular dynamics simulations. The polymer consistent force field (PCFF) was applied to the PDMAEMA model with a proper protonation state. The structural analysis indicates a distinct difference in the hydration state of particular functional groups of PDMAEMA as well as in the conformational state of PDMAEMA below and above the lower critical solution temperature (LCST). In particular, by monitoring the motion of water molecules, we observe that water molecules in the vicinity of the carbonyl group are relatively restricted to the motion in the globule state due to the extended relaxation time of hydrogen bonds among water molecules. The degree of protonation was also adjusted to study the effect of protonation on the conformational state of PDMAEMA.
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Affiliation(s)
- Sa Hoon Min
- Department of Energy Engineering, School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 689-798, Korea
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147
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Abbott LJ, Tucker AK, Stevens MJ. Single Chain Structure of a Poly(N-isopropylacrylamide) Surfactant in Water. J Phys Chem B 2015; 119:3837-45. [DOI: 10.1021/jp511398q] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Lauren J. Abbott
- Sandia National Laboratories, Albuquerque, New Mexico 87185-1315, United States
| | - Ashley K. Tucker
- Sandia National Laboratories, Albuquerque, New Mexico 87185-1315, United States
| | - Mark J. Stevens
- Sandia National Laboratories, Albuquerque, New Mexico 87185-1315, United States
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148
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Gupta BS, Taha M, Lee MJ. Buffers more than buffering agent: introducing a new class of stabilizers for the protein BSA. Phys Chem Chem Phys 2015; 17:1114-33. [DOI: 10.1039/c4cp04663c] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this study, we have analyzed the influence of four biological buffers on the thermal stability of bovine serum albumin (BSA) using dynamic light scattering (DLS).
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Affiliation(s)
- Bhupender S. Gupta
- Department of Chemical Engineering
- National Taiwan University of Science and Technology
- Taipei 106-07
- Taiwan
| | - Mohamed Taha
- CICECO
- Departamento de Química
- Universidade de Aveiro
- Portugal
| | - Ming-Jer Lee
- Department of Chemical Engineering
- National Taiwan University of Science and Technology
- Taipei 106-07
- Taiwan
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149
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Gomes Rodrigues D, Dacheux N, Pellet-Rostaing S, Faur C, Bouyer D, Monge S. The first report on phosphonate-based homopolymers combining both chelating and thermosensitive properties of gadolinium: synthesis and evaluation. Polym Chem 2015. [DOI: 10.1039/c5py00785b] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Original thermoresponsive poly(acrylamide) bearing valuable carbamoylmethylphosphonate moieties was prepared for gadolinium sorption.
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Affiliation(s)
- Donatien Gomes Rodrigues
- Institut Charles Gerhardt Montpellier UMR5253 CNRS-UM-ENSCM – Equipe Ingénierie et Architectures Macromoléculaires
- Université de Montpellier
- 34095 Montpellier Cedex 5
- France
- Institut de Chimie Séparative de Marcoule UMR 5257 CEA-CNRS-UM-ENSCM – Laboratoire des Interfaces des Matériaux en Evolution
| | - Nicolas Dacheux
- Institut de Chimie Séparative de Marcoule UMR 5257 CEA-CNRS-UM-ENSCM – Laboratoire des Interfaces des Matériaux en Evolution
- 30207 Bagnols sur Cèze Cedex
- France
| | - Stéphane Pellet-Rostaing
- Institut de Chimie Séparative de Marcoule UMR 5257 CEA-CNRS-UM-ENSCM – Laboratoire du Tri-ionique par des Systèmes Moléculaires auto-assemblés
- 30207 Bagnols sur Cèze Cedex
- France
| | - Catherine Faur
- Institut Européen des Membranes UMR 5635 CNRS-ENSCM-UM – Département Génie des Procédés Membranaires
- Université de Montpellier
- 34095 Montpellier, Cedex 5
- France
| | - Denis Bouyer
- Institut Européen des Membranes UMR 5635 CNRS-ENSCM-UM – Département Génie des Procédés Membranaires
- Université de Montpellier
- 34095 Montpellier, Cedex 5
- France
| | - Sophie Monge
- Institut Charles Gerhardt Montpellier UMR5253 CNRS-UM-ENSCM – Equipe Ingénierie et Architectures Macromoléculaires
- Université de Montpellier
- 34095 Montpellier Cedex 5
- France
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150
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Kim YJ, Takahashi Y, Kato N, Matsunaga YT. Fabrication of biomimetic bundled gel fibres using dynamic microfluidic gelation of phase-separated polymer solutions. J Mater Chem B 2015; 3:8154-8161. [DOI: 10.1039/c5tb01395j] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Here, we discuss the fabrication of biomimetic bundle-structured gel fibres using a microfluidic device and the rapid cross-linking of a phase-separated polymer blend solution.
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Affiliation(s)
- Young-Jin Kim
- Institute of Industrial Science
- The University of Tokyo
- Tokyo
- Japan
- Japan Society for the Promotion of Science (JSPS)
| | - Yuta Takahashi
- Institute of Industrial Science
- The University of Tokyo
- Tokyo
- Japan
- Graduate School of Engineering
| | - Norihiro Kato
- Graduate School of Engineering
- Utsunomiya University
- Tochigi
- Japan
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