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Sperling C, Maitz MF, Körber V, Hänsel S, Werner C. Advanced in vitro hemocompatibility assessment of biomaterials using a new flow incubation system. BIOMATERIALS ADVANCES 2023; 153:213555. [PMID: 37478769 DOI: 10.1016/j.bioadv.2023.213555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 06/21/2023] [Accepted: 07/06/2023] [Indexed: 07/23/2023]
Abstract
Physiologically relevant in vitro hemocompatibility assessment of biomaterials remains challenging. We present a new setup that enables standardized whole blood incubation of biomedical materials under flow. A blood volume of 2 mL is recirculated over test surfaces in a custom-made parallel plate incubation system to determine the activation of hemostasis and inflammation. Controlled physiological shear rates between 125 s-1 and 1250 s-1 and minimized contact to air are combined with a natural-like pumping process. A unique feature of this setup allows tracing adhesion of blood cells to test surfaces microscopically in situ. Validation testing was performed in comparison to previously applied whole blood incubation methodologies. Experiments with the newly developed setup showed that even small obstacles to blood flow activate blood (independent of materials-induced blood activation levels); that adhesion of blood cells to biomaterials equilibrates within 5 to 10 min; that high shear rates (1250 compared to 375 s-1) induce platelet activation; and that hemolysis, platelet factor 4 (PF4) release and platelet loss - but not thrombin formation - depend on shear rate (within the range investigated, 125 to 1250 s-1).
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Affiliation(s)
- Claudia Sperling
- Institute Biofunctional Polymer Materials, Max Bergmann Center of Biomaterials, Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Str. 6, 01069 Dresden, Germany.
| | - Manfred F Maitz
- Institute Biofunctional Polymer Materials, Max Bergmann Center of Biomaterials, Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Str. 6, 01069 Dresden, Germany.
| | - Vincent Körber
- Institute Biofunctional Polymer Materials, Max Bergmann Center of Biomaterials, Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Str. 6, 01069 Dresden, Germany
| | - Stefanie Hänsel
- Institute Biofunctional Polymer Materials, Max Bergmann Center of Biomaterials, Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Str. 6, 01069 Dresden, Germany
| | - Carsten Werner
- Institute Biofunctional Polymer Materials, Max Bergmann Center of Biomaterials, Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Str. 6, 01069 Dresden, Germany
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Lesniewska N, Beaussart A, Duval JF. Electrostatics of soft (bio)interfaces: Corrections of mean-field Poisson-Boltzmann theory for ion size, dielectric decrement and ion-ion correlation. J Colloid Interface Sci 2023; 642:154-168. [PMID: 37003010 DOI: 10.1016/j.jcis.2023.03.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 02/24/2023] [Accepted: 03/02/2023] [Indexed: 03/28/2023]
Abstract
HYPOTHESIS Electrostatics of soft (ion-permeable) (bio)particles (e.g. microorganisms, core/shell colloids) in aqueous electrolytes is commonly formulated by the mean-field Poisson-Boltzmann theory and integration of the charge contributions from electrolyte ions and soft material. However, the effects connected to the size of the electrolyte ions and that of the structural charges carried by the particle, to dielectric decrement and ion-ion correlations on soft interface electrostatics have been so far considered at the margin, despite the limits of the Gouy theory for condensed and/or multivalent electrolytes. EXPERIMENTS Accordingly, we modify herein the Poisson-Boltzmann theory for core/shell (bio)interfaces to include the aforementioned molecular effects considered separately or concomitantly. The formalism is applicable for poorly to highly charged particles in the thin electric double layer regime and to unsymmetrical multivalent electrolytes. FINDINGS Computational examples of practical interests are discussed with emphasis on how each considered molecular effect or combination thereof affects the interfacial potential distribution depending on size and valence of cations and anions, size of particle charges, length scale of ionic correlations and shell-to-Debye layer thickness ratio. The origins of here-evidenced pseudo-harmonic potential profile and ion size-dependent screening of core/shell particle charges are detailed. In addition, the existence and magnitude of the Donnan potential when reached in the shell layer are shown to depend on the excluded volumes of the electrolyte ions.
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Liu TJ, Hsu JP. Electrokinetic behavior of conical nanopores functionalized with two polyelectrolyte layers: effect of pH gradient. SOFT MATTER 2022; 18:8427-8435. [PMID: 36301179 DOI: 10.1039/d2sm01172g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
The behavior of ionic current rectification of a conical nanopore functionalized with two polyelectrolyte (PE) layers via layer-by-layer deposition subject to an extra applied pH gradient is investigated theoretically. The applied pH, the electric potential, the half-cone angle of the conical nanopore, and the fixed charge densities of the PE layers are examined in detail for their influence on the ionic current rectification (ICR) behavior of the nanopore. We found that this behavior depends highly on the direction of the pH gradient, which arises because the associated electroosmotic flow plays a significant role. The mechanisms of ionic transport in the present pH asymmetric system are discussed. The results gathered reveal that the ICR behavior of a nanopore can be tuned effectively by applying an extra pH gradient. We also examine the case where two PE layers are uniformly merged into one layer. In this case, both the fixed charge density and the concentration profile are quite different from those when two PE layers are present.
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Affiliation(s)
- Tien Juin Liu
- Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan.
| | - Jyh-Ping Hsu
- Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan.
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Electrostatic effects on ligand-assisted transfer of metals to (bio)accumulating interfaces and metal complexes (bioavai)lability. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.130679] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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5
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Zimmermann R, Duval JF, Werner C, Sterling JD. Quantitative insights into electrostatics and structure of polymer brushes from microslit electrokinetic experiments and advanced modelling of interfacial electrohydrodynamics. Curr Opin Colloid Interface Sci 2022. [DOI: 10.1016/j.cocis.2022.101590] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Liu TJ, Ma T, Lin CY, Balme S, Hsu JP. Origin of Ultrahigh Rectification in Polyelectrolyte Bilayers Modified Conical Nanopores. J Phys Chem Lett 2021; 12:11858-11864. [PMID: 34874161 DOI: 10.1021/acs.jpclett.1c03513] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The switching of "ON" and "OFF" states of an ionic diode is investigated by considering a conical nanopore partially functionalized two polyelectrolyte (PE) layers via layer-by-layer deposition. Through observing the inversion of its rectification behavior, we demonstrate the function of the PE bilayers in ionic transport regulation. The ionic diode exhibits an ultrahigh ion rectification at a low level of pH. In an aqueous NaCl solution at pH 2, for example, the ratio of the current at "ON" state and that at "OFF" state can be about 800 and 200 for 1 and 100 mM, respectively. This remarkable gating behavior can be explained by the anion-pump-induced ion accumulation in the neutral region as well as the depletion zone at the interface. Our results further demonstrate the possibility of achieving an ultrahigh rectification in an ionic diode having a unipolar-like configuration.
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Affiliation(s)
- Tien-Juin Liu
- Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan
| | - Tianji Ma
- Institut Européen des Membranes, UMR5635 UM ENSM CNRS, Place Eugène Bataillon, 34095 CEDEX 5 Montpellier, France
| | - Chih-Yuan Lin
- Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan
| | - Sébastien Balme
- Institut Européen des Membranes, UMR5635 UM ENSM CNRS, Place Eugène Bataillon, 34095 CEDEX 5 Montpellier, France
| | - Jyh-Ping Hsu
- Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan
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7
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Ion partitioning effect on the electrostatic interaction between two charged soft surfaces. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.127296] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Barman B, Kumar D, Gopmandal PP, Ohshima H. Electrokinetic ion transport and fluid flow in a pH-regulated polymer-grafted nanochannel filled with power-law fluid. SOFT MATTER 2020; 16:6862-6874. [PMID: 32638819 DOI: 10.1039/d0sm00709a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
In this article, we have discussed extensively electrokinetic ion transport and fluid flow through a slit polymer-grafted nanochannel filled with power-law fluid. The rigid walls of the channel are coated with the ion and fluid penetrable polymer layer containing a pH-regulated zwitterionic functional group (e.g., succinoglycan). The mathematical model is based on the non-linear Poisson-Boltzmann equation for electric double layer potential and the flow field within the polymer layer is governed by a modified Darcy-Brinkman equation; the Cauchy momentum equation governs the fluid flow outside of the polymer layer along with the equation of continuity for incompressible fluid. In order to consider a wide range of pertinent parameters, we adopt a finite difference based numerical tool to solve the coupled set of governing equations. We have analyzed several interesting features of electrokinetic transport phenomena through such a polymer-grafted nanochannel for a wide range of electrostatic and hydrodynamic properties of the polymer layer, parameters describing the non-Newtonian rheology of the background fluid, and the pH and concentration of the bulk electrolyte. In addition, we have also illustrated the ionic current across the undertaken nanochannel and observed that it can be either cation selective, anion selective or non-selective, depending on the critical choice of the pertinent parameters.
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Affiliation(s)
- Bhanuman Barman
- Department of Mathematics, National Institute of Technology Patna, Patna 800005, India
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Husteden C, Doberenz F, Goergen N, Pinnapireddy SR, Janich C, Langner A, Syrowatka F, Repanas A, Erdmann F, Jedelská J, Bakowsky U, Groth T, Wölk C. Contact-Triggered Lipofection from Multilayer Films Designed as Surfaces for in Situ Transfection Strategies in Tissue Engineering. ACS APPLIED MATERIALS & INTERFACES 2020; 12:8963-8977. [PMID: 32003972 DOI: 10.1021/acsami.9b18968] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Biomaterials, which release active compounds after implantation, are an essential tool for targeted regenerative medicine. In this study, thin multilayer films loaded with lipid/DNA complexes (lipoplexes) were designed as surface coatings for in situ transfection applicable in tissue engineering and regenerative medicine. The film production and embedding of lipoplexes were based on the layer-by-layer (LbL) deposition technique. Hyaluronic acid (HA) and chitosan (CHI) were used as the polyelectrolyte components. The embedded plasmid DNA was complexed using a new designed cationic lipid formulation, namely, OH4/DOPE 1/1, the advantageous characteristics of which have been proven already. Three different methods were tested regarding its efficiency of lipid and DNA deposition. Therefore, several surface specific analytics were used to characterize the LbL formation, the lipid DNA embedding, and the surface characteristics of the multilayer films, such as fluorescence microscopy, surface plasmon resonance spectroscopy, ellipsometry, zeta potential measurements, atomic force microscopy, and scanning electron microscopy. Interaction studies were conducted for optimized lipoplex-loaded polyelectrolyte multilayers (PEMs) that showed an efficient attachment of C2C12 cells on the surface. Furthermore, no acute toxic effects were found in cell culture studies, demonstrating biocompatibility. Cell culture experiments with C2C12 cells, a cell line which is hard to transfect, demonstrated efficient transfection of the reporter gene encoding for green fluorescent protein. In vivo experiments using the chicken embryo chorion allantois membrane animal replacement model showed efficient gene-transferring rates in living complex tissues, although the DNA-loaded films were stored over 6 days under wet and dried conditions. Based on these findings, it can be concluded that OH4/DOPE 1/1 lipoplex-loaded PEMs composed of HA and CHI can be an efficient tool for in situ transfection in regenerative medicine.
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Affiliation(s)
- Catharina Husteden
- Institute of Pharmacy, Department of Medicinal Chemistry , Martin Luther University Halle-Wittenberg , Wolfgang-Langenbeck-Str. 4 , 06120 Halle (Saale) , Germany
| | - Falko Doberenz
- Institute of Pharmacy, Department Biomedical Materials , Martin Luther University Halle-Wittenberg , Heinrich-Damerow-Str. 4 , 06120 Halle (Saale) , Germany
| | - Nathalie Goergen
- Department of Pharmaceutics and Biopharmaceutics , University of Marburg , Robert-Koch-Str. 4 , 35037 Marburg , Germany
| | - Shashank Reddy Pinnapireddy
- Department of Pharmaceutics and Biopharmaceutics , University of Marburg , Robert-Koch-Str. 4 , 35037 Marburg , Germany
| | - Christopher Janich
- Institute of Pharmacy, Department of Medicinal Chemistry , Martin Luther University Halle-Wittenberg , Wolfgang-Langenbeck-Str. 4 , 06120 Halle (Saale) , Germany
| | - Andreas Langner
- Institute of Pharmacy, Department of Medicinal Chemistry , Martin Luther University Halle-Wittenberg , Wolfgang-Langenbeck-Str. 4 , 06120 Halle (Saale) , Germany
| | - Frank Syrowatka
- Interdisciplinary Center of Materials Science , Martin-Luther-University Halle-Wittenberg , Heinrich-Damerow-Str. 4 , 06120 Halle (Saale) , Germany
| | - Alexandros Repanas
- Institute of Pharmacy, Department Biomedical Materials , Martin Luther University Halle-Wittenberg , Heinrich-Damerow-Str. 4 , 06120 Halle (Saale) , Germany
| | - Frank Erdmann
- Institute of Pharmacy, Department of Pharmacology , Martin Luther University Halle-Wittenberg , Wolfgang-Langenbeck-Str. 4 , 06120 Halle (Saale) , Germany
| | - Jarmila Jedelská
- Department of Pharmaceutics and Biopharmaceutics , University of Marburg , Robert-Koch-Str. 4 , 35037 Marburg , Germany
| | - Udo Bakowsky
- Department of Pharmaceutics and Biopharmaceutics , University of Marburg , Robert-Koch-Str. 4 , 35037 Marburg , Germany
| | - Thomas Groth
- Institute of Pharmacy, Department Biomedical Materials , Martin Luther University Halle-Wittenberg , Heinrich-Damerow-Str. 4 , 06120 Halle (Saale) , Germany
- Interdisciplinary Center of Materials Science , Martin-Luther-University Halle-Wittenberg , Heinrich-Damerow-Str. 4 , 06120 Halle (Saale) , Germany
- Laboratory of Biomedical Nanotechnologies, Institute of Bionic Technologies and Engineering , I.M. Sechenov First Moscow State University , Trubetskaya Street 8 , 119991 Moscow , Russian Federation
| | - Christian Wölk
- Institute of Pharmacy, Department of Medicinal Chemistry , Martin Luther University Halle-Wittenberg , Wolfgang-Langenbeck-Str. 4 , 06120 Halle (Saale) , Germany
- Institute of Pharmacy, Pharmaceutical Technology, Faculty of Medicine , Leipzig University , 04317 Leipzig , Germany
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10
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Zimmermann R, Duval JF, Werner C. On the analysis of ionic surface conduction to unravel charging processes at macroscopic soft and hard solid–liquid interfaces. Curr Opin Colloid Interface Sci 2019. [DOI: 10.1016/j.cocis.2019.10.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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11
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Cedano-Serrano FJ, Sidoli U, Synytska A, Tran Y, Hourdet D, Creton C. From Molecular Electrostatic Interactions and Hydrogel Architecture to Macroscopic Underwater Adherence. Macromolecules 2019. [DOI: 10.1021/acs.macromol.8b02696] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Francisco J. Cedano-Serrano
- Soft Matter Sciences and Engineering, ESPCI Paris, PSL University, Sorbonne University, CNRS, F-75005 Paris, France
| | - Ugo Sidoli
- Department of Polymer Interfaces, Leibniz Institute of Polymer Research, Hohe Strasse 6, D-01069 Dresden, Germany
- Technische Universität Dresden, D-01062 Dresden, Germany
| | - Alla Synytska
- Department of Polymer Interfaces, Leibniz Institute of Polymer Research, Hohe Strasse 6, D-01069 Dresden, Germany
- Technische Universität Dresden, D-01062 Dresden, Germany
| | - Yvette Tran
- Soft Matter Sciences and Engineering, ESPCI Paris, PSL University, Sorbonne University, CNRS, F-75005 Paris, France
| | - Dominique Hourdet
- Soft Matter Sciences and Engineering, ESPCI Paris, PSL University, Sorbonne University, CNRS, F-75005 Paris, France
| | - Costantino Creton
- Soft Matter Sciences and Engineering, ESPCI Paris, PSL University, Sorbonne University, CNRS, F-75005 Paris, France
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12
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Gorthi SR, Gaikwad HS, Mondal PK, Biswas G. Surface Tension Driven Filling in a Soft Microchannel: Role of Streaming Potential. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b00767] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Srinivas R. Gorthi
- Department of Mechanical Engineering, Indian Institute of Technology Guwahati, Assam, India 781039
| | - Harshad Sanjay Gaikwad
- Department of Mechanical Engineering, Indian Institute of Technology Guwahati, Assam, India 781039
| | - Pranab Kumar Mondal
- Department of Mechanical Engineering, Indian Institute of Technology Guwahati, Assam, India 781039
| | - Gautam Biswas
- Department of Mechanical Engineering, Indian Institute of Technology Guwahati, Assam, India 781039
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13
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Ultra-slow diffusion of hexacyanoferrate anions in poly(diallyldimethyl ammonium chloride)-poly(acrylic acid sodium salt) multilayer films. J Colloid Interface Sci 2019; 539:306-314. [DOI: 10.1016/j.jcis.2018.12.073] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Revised: 12/17/2018] [Accepted: 12/18/2018] [Indexed: 11/19/2022]
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14
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The role of ion partitioning in electrohydrodynamic characteristics of soft nanofluidics: Inclusion of EDL overlap and steric effects. Chem Eng Sci 2018. [DOI: 10.1016/j.ces.2018.05.049] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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15
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Sin JS, Kim UH. Ion size effect on electrostatic and electroosmotic properties in soft nanochannels with pH-dependent charge density. Phys Chem Chem Phys 2018; 20:22961-22971. [DOI: 10.1039/c8cp04185g] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report a theoretical study of the ion size effect on various properties in a soft nanochannel with pH-dependent charge density.
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Affiliation(s)
- Jun-Sik Sin
- Department of Physics, Kim Il Sung University
- Pyongyang
- Democratic People's Republic of Korea
- Natural Science Center, Kim Il Sung University
- Pyongyang
| | - Un-Hyok Kim
- Institute of Environmental Science and Water Technology, Academy of Sciences
- Pyongyang
- Democratic People's Republic of Korea
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16
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Michna A. Macroion adsorption-electrokinetic and optical methods. Adv Colloid Interface Sci 2017; 250:95-131. [PMID: 29055493 DOI: 10.1016/j.cis.2017.09.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Revised: 09/22/2017] [Accepted: 09/24/2017] [Indexed: 01/03/2023]
Abstract
Recent studies on macroion adsorption at solid/liquid interfaces evaluated by electrokinetic and optical methods are reviewed. In the first section a description of electrokinetic phenomena at a solid surface is briefly outlined. Various methods for determining both static and dynamic properties of the electrical double layer, such as the appropriate location of the slip plane, are presented. Theoretical approaches are discussed concerning quantitative interpretation of streaming potential/current measurements of homogeneous macroscopic interfaces. Experimental results are presented, involving electrokinetic characteristics of bare surfaces, such as mica, silicon, glass etc. obtained from various types of electrokinetic cells. The surface conductivity effect on zeta potential is underlined. In the next section, various theoretical approaches, proposed to determine a distribution of electrostatic potential and flow distribution within macroion layers, are presented. Accordingly, the influence of the uniform as well as non-uniform distribution of charges within macroion layer, the dissociation degree, and the surface conductance on electrokinetic parameters are discussed. The principles, the advantages and limits of optical techniques as well as AFM are briefly outlined in Section 4. The last section is devoted to the discussion of experimental data obtained by streaming potential/current measurements and optical methods, such as reflectometry, ellipsometry, surface plasmon resonance (SPR), optical waveguide lightmode spectroscopy (OWLS), colloid enhancement, and fluorescence technique, for mono- and multilayers of macroions. Results of polycations (PEI, PAMAM dendrimers, PAH, PDADMAC) and polyanions (PAA, PSS) adsorption on mica, silicon, gold, and PTFE are quantitatively interpreted in terms of theoretical approaches postulating the three dimensional charge distribution or the random sequential adsorption model (RSA). Macroion bilayer formation, experimentally examined by streaming current measurements, and theoretically interpreted in terms of the comprehensive formalism is also reviewed. The utility of electrokinetic measurements, combined with optical methods, for a precise, in situ characteristics of macroion mono- and multilayer formation at solid/liquid interfaces is pointed out.
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Sperling C, Maitz MF, Grasso S, Werner C, Kanse SM. A Positively Charged Surface Triggers Coagulation Activation Through Factor VII Activating Protease (FSAP). ACS APPLIED MATERIALS & INTERFACES 2017; 9:40107-40116. [PMID: 29091393 DOI: 10.1021/acsami.7b14281] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Contact between biomedical materials and blood often initiates undesirable pro-coagulant and pro-inflammatory processes. On negatively charged materials, blood coagulation is known to be triggered through autoactivation of Factor XII, while activation on cationic surfaces follows a distinct and so far enigmatic mechanism. Because Factor VII activating protease (FSAP) is known to be activated on positively and on negatively charged macromolecules in plasma, we have investigated its interaction with charged biomaterials and its consequences for coagulation. Several activation processes in blood and plasma were characterized after contact with material surfaces with varied charge. FSAP was found to be exclusively activated by the positively charged surfaces polyethylenimine (PEI) and poly-l-lysine (PLL), not by the negatively charged glass or self-assembled monolayer with carboxyl group termination (SAM-COOH), as well as uncharged (Teflon AF) surfaces. Whole blood incubation on PEI showed that this activation was concomitant with coagulation as determined by thrombin and fibrin formation, which was high for glass (F1+2, 138 nM) and PEI (F1+2, 44 nM) but low for Teflon AF (F1+2, 3.3 nM) and SAM COOH (F1+2, 5.8 nM). Contact phase inhibitor diminished coagulation to background levels for all surfaces except PEI (F1+2: ^PEI 43 to 25 nM; glass, 58 to 1.5 nM) indicating that coagulation activation is not dependent on FXII activation on the PEI surface. A decisive role of endogenous FSAP for coagulation however was confirmed with the use of FSAP inhibitory antibodies which showed no influence on Teflon AF, glass and SAM COOH but diminished F1+2 on PEI to less than 50%. We propose that FSAP activation could be a novel mechanism of surface-driven coagulation. An inhibition of this protease might improve hemocompatibility of cationic surfaces and therefore facilitate the application of polycationic surfaces in blood.
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Affiliation(s)
- Claudia Sperling
- Institute Biofunctional Polymer Materials, Max Bergmann Center of Biomaterials, Leibniz-Institut für Polymerforschung Dresden e.V. Hohe Strasse 6, 01069 Dresden, Germany
| | - Manfred F Maitz
- Institute Biofunctional Polymer Materials, Max Bergmann Center of Biomaterials, Leibniz-Institut für Polymerforschung Dresden e.V. Hohe Strasse 6, 01069 Dresden, Germany
| | - Simona Grasso
- Oslo University Hospital and University of Oslo , 0372 Oslo, Norway
| | - Carsten Werner
- Institute Biofunctional Polymer Materials, Max Bergmann Center of Biomaterials, Leibniz-Institut für Polymerforschung Dresden e.V. Hohe Strasse 6, 01069 Dresden, Germany
| | - Sandip M Kanse
- Oslo University Hospital and University of Oslo , 0372 Oslo, Norway
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Guduru D, Niepel MS, Gonzalez-Garcia C, Salmeron-Sanchez M, Groth T. Comparative Study of Osteogenic Activity of Multilayers Made of Synthetic and Biogenic Polyelectrolytes. Macromol Biosci 2017; 17. [PMID: 28547877 DOI: 10.1002/mabi.201700078] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2017] [Revised: 04/19/2017] [Indexed: 11/05/2022]
Abstract
Polyelectrolyte multilayer (PEM) coatings on biomaterials are applied to tailor adhesion, growth, and function of cells on biomedical implants. Here, biogenic and synthetic polyelectrolytes (PEL) are used for layer-by-layer assembly to study the osteogenic activity of PEM with human osteosarcoma MG-63 cells in a comparative manner. Formation of PEM is achieved with biogenic PEL fibrinogen (FBG) and poly-l-lysine (PLL) as well as biotinylated chondroitin sulfate (BCS) and avidin (AVI), while poly(allylamine hydrochloride) (PAH) and polystyrene sulfonate (PSS) represent a fully synthetic PEM used as a reference system here. Surface plasmon resonance measurements show highest layer mass for FBG/PLL and similar for PSS/PAH and BCS/AVI systems, while water contact angle and zeta potential measurements indicate larger differences for PSS/PAH and FBG/PLL but not for BCS/AVI multilayers. All PEM systems support cell adhesion and growth and promote osteogenic differentiation as well. However, FBG/PLL layers are superior regarding MG-63 cell adhesion during short-term culture, while the BCS/AVI system increases alkaline phosphatase activity in long-term culture. Particularly, a multilayer system based on affinity interaction like BCS/AVI may be useful for controlled presentation of biotinylated growth factors to promote growth and differentiation of cells for biomedical applications.
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Affiliation(s)
- Deepak Guduru
- Biomedical Materials Group, Institute of Pharmacy, Martin Luther University Halle-Wittenberg, 06099, Halle (Saale), Germany
| | - Marcus S Niepel
- Biomedical Materials Group, Institute of Pharmacy &, Interdisciplinary Center of Materials Science, Martin Luther University Halle-Wittenberg, 06099, Halle (Saale), Germany
| | - Cristina Gonzalez-Garcia
- Division of Biomedical Engineering, School of Engineering, University of Glasgow, Glasgow, G12 8LT, UK
| | - Manuel Salmeron-Sanchez
- Division of Biomedical Engineering, School of Engineering, University of Glasgow, Glasgow, G12 8LT, UK
| | - Thomas Groth
- Biomedical Materials Group, Institute of Pharmacy &, Interdisciplinary Center of Materials Science, Martin Luther University Halle-Wittenberg, 06099, Halle (Saale), Germany
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Niepel MS, Mano JF, Groth T. Effect of Polyelectrolyte Multilayers Assembled on Ordered Nanostructures on Adhesion of Human Fibroblasts. ACS APPLIED MATERIALS & INTERFACES 2016; 8:25142-51. [PMID: 27603547 DOI: 10.1021/acsami.6b09349] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Nanosphere lithography (NSL) and the layer-by-layer (LbL) technique are combined here for the first time to design a flexible system to achieve nanotopographical control of cell adhesion. NSL is used to generate regular patterns of tetrahedral gold nanodots of different size and distance. Besides the change in topography, LbL is used to generate a polyelectrolyte multilayer (PEM) system consisting of heparin (HEP) and poly(ethylene imine) (PEI) on top of the gold dots. The localized formation of PEM on gold dots is achieved by prior passivation of the surrounding silicon or glass surface. Properties of PEM are changed by adjusting the pH value of HEP solution to either acidic or alkaline values. Studies with human dermal fibroblasts (HDF) reveal that cells spread to a higher extent on PEM formed at pH 5.0 in dependence on the structure dimension. Further, filopodia formation is highly increased in cells on nanostructures exhibiting HEP as a terminal layer. The new system offers a great potential to guide stem cell differentiation in the future owing to its high degree of chemical and topographical heterogeneity.
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Affiliation(s)
| | - João F Mano
- Department of Chemistry, CICECO - Aveiro Institute of Materials, University of Aveiro , 3810-193 Aveiro, Portugal
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20
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Duval JF, Werner C, Zimmermann R. Electrokinetics of soft polymeric interphases with layered distribution of anionic and cationic charges. Curr Opin Colloid Interface Sci 2016. [DOI: 10.1016/j.cocis.2016.05.002] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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21
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Poddar A, Maity D, Bandopadhyay A, Chakraborty S. Electrokinetics in polyelectrolyte grafted nanofluidic channels modulated by the ion partitioning effect. SOFT MATTER 2016; 12:5968-5978. [PMID: 27306568 DOI: 10.1039/c6sm00275g] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The effects of ion partitioning on the electrokinetics in a polyelectrolyte grafted nanochannel, which is the representative of a soft nanochannel, are analyzed. Earlier studies in this regard have considered low polyelectrolyte layer (PEL) grafting density at the rigid nanochannel wall and, hence, an equal permittivity inside and outside the grafted layer. In order to overcome this shortcoming, the concept of Born energy is revisited. The coupled system of the modified Poisson-Boltzmann and Navier-Stokes equation is solved numerically, going beyond the widely employed Debye-Hückel linearization and low PEL densities. The complex interplay between the hydrodynamics and charge distribution, modulated by the ion partitioning effect, along with their consequent effects on the streaming potential and electrokinetic energy conversion efficiency (EKEC) have been systemically investigated. It has been observed that the ion partitioning effect reduces the EKEC in comparison to the case with equal permittivity up to a certain electrical double layer thickness after which it increases the EKEC. For a high concentration of mobile charges within the PEL, the net gain in the maximum EKEC due to the ion partitioning effect is about 10 fold that of the case when the ion partitioning effect is not considered. We delve into the various scaling regimes in the streaming potential and intriguingly point out the exact location of peaks in efficiency. The present study also reveals the possibility of improvement in streaming potential mediated energy conversion by the use of polyelectrolyte materials, which possess substantially lower dielectric permittivity than the bulk electrolyte.
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Affiliation(s)
- Antarip Poddar
- Department of Mechanical Engineering, Indian Institute of Technology Kharagpur, Kharagpur, India-721302.
| | - Debonil Maity
- Department of Mechanical Engineering, Indian Institute of Technology Kharagpur, Kharagpur, India-721302.
| | - Aditya Bandopadhyay
- Advanced Technology Development Center, Indian Institute of Technology Kharagpur, Kharagpur, India-721302
| | - Suman Chakraborty
- Department of Mechanical Engineering, Indian Institute of Technology Kharagpur, Kharagpur, India-721302. and Advanced Technology Development Center, Indian Institute of Technology Kharagpur, Kharagpur, India-721302
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22
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Barbati AC, Kirby BJ. Surface conductivity in electrokinetic systems with porous and charged interfaces: Analytical approximations and numerical results. Electrophoresis 2016; 37:1979-91. [PMID: 27168464 DOI: 10.1002/elps.201500505] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2015] [Revised: 04/05/2016] [Accepted: 04/05/2016] [Indexed: 11/10/2022]
Abstract
We derive an approximate analytical representation of the conductivity for a 1D system with porous and charged layers grafted onto parallel plates. Our theory improves on prior work by developing approximate analytical expressions applicable over an arbitrary range of potentials, both large and small as compared to the thermal voltage (RTF). Further, we describe these results in a framework of simplifying nondimensional parameters, indicating the relative dominance of various physicochemical processes. We demonstrate the efficacy of our approximate expression with comparisons to numerical representations of the exact analytical conductivity. Finally, we utilize this conductivity expression, in concert with other components of the electrokinetic coupling matrix, to describe the streaming potential and electroviscous effect in systems with porous and charged layers.
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Affiliation(s)
- Alexander C Barbati
- Sibley School of Mechanical and Aerospace Engineering, Cornell University, Ithaca, NY, USA
| | - Brian J Kirby
- Sibley School of Mechanical and Aerospace Engineering, Cornell University, Ithaca, NY, USA
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Zimmermann R, Werner C, Duval JFL. Recent Progress and Perspectives in the Electrokinetic Characterization of Polyelectrolyte Films. Polymers (Basel) 2015; 8:polym8010007. [PMID: 30979104 PMCID: PMC6432592 DOI: 10.3390/polym8010007] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2015] [Revised: 12/22/2015] [Accepted: 12/23/2015] [Indexed: 11/16/2022] Open
Abstract
The analysis of the charge, structure and molecular interactions of/within polymeric substrates defines an important analytical challenge in materials science. Accordingly, advanced electrokinetic methods and theories have been developed to investigate the charging mechanisms and structure of soft material coatings. In particular, there has been significant progress in the quantitative interpretation of streaming current and surface conductivity data of polymeric films from the application of recent theories developed for the electrohydrodynamics of diffuse soft planar interfaces. Here, we review the theory and experimental strategies to analyze the interrelations of the charge and structure of polyelectrolyte layers supported by planar carriers under electrokinetic conditions. To illustrate the options arising from these developments, we discuss experimental and simulation data for plasma-immobilized poly(acrylic acid) films and for a polyelectrolyte bilayer consisting of poly(ethylene imine) and poly(acrylic acid). Finally, we briefly outline potential future developments in the field of the electrokinetics of polyelectrolyte layers.
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Affiliation(s)
- Ralf Zimmermann
- Leibniz Institute of Polymer Research Dresden, Max Bergmann Center of Biomaterials Dresden, Hohe Strasse 6, 01069 Dresden, Germany.
| | - Carsten Werner
- Leibniz Institute of Polymer Research Dresden, Max Bergmann Center of Biomaterials Dresden, Hohe Strasse 6, 01069 Dresden, Germany.
- Technische Universität Dresden, Center for Regenerative Therapies Dresden, Tatzberg 47, 01307 Dresden, Germany.
| | - Jérôme F L Duval
- Laboratoire Interdisciplinaire des Environnements Continentaux (LIEC), CNRS UMR 7360, 15 avenue du Charmois, B.P. 40, F-54501 Vandoeuvre-lès-Nancy cedex, France.
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24
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Das S, Banik M, Chen G, Sinha S, Mukherjee R. Polyelectrolyte brushes: theory, modelling, synthesis and applications. SOFT MATTER 2015; 11:8550-83. [PMID: 26399305 DOI: 10.1039/c5sm01962a] [Citation(s) in RCA: 94] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Polyelectrolyte (PE) brushes are a special class of polymer brushes (PBs) containing charges. Polymer chains attain "brush"-like configuration when they are grafted or get localized at an interface (solid-fluid or liquid-fluid) with sufficiently close proximity between two-adjacent grafted polymer chains - such a proximity triggers a particular nature of interaction between the adjacent polymer molecules forcing them to stretch orthogonally to the grafting interface, instead of random-coil arrangement. In this review, we discuss the theory, synthesis, and applications of PE brushes. The theoretical discussion starts with the standard scaling concepts for polymer and PE brushes; following that, we shed light on the state of the art in continuum modelling approaches for polymer and PE brushes directed towards analysis beyond the scaling calculations. A special emphasis is laid in pinpointing the cases for which the PE electrostatic effects can be de-coupled from the PE entropic and excluded volume effects; such de-coupling is necessary to appropriately probe the complicated electrostatic effects arising from pH-dependent charging of the PE brushes and the use of these effects for driving liquid and ion transport at the interfaces covered with PE brushes. We also discuss the atomistic simulation approaches for polymer and PE brushes. Next we provide a detailed review of the existing approaches for the synthesis of polymer and PE brushes on interfaces, nanoparticles, and nanochannels, including mixed brushes and patterned brushes. Finally, we discuss some of the possible applications and future developments of polymer and PE brushes grafted on a variety of interfaces.
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Affiliation(s)
- Siddhartha Das
- Department of Mechanical Engineering, University of Maryland, College Park, MD-20742, USA.
| | - Meneka Banik
- Instability and Soft Patterning Laboratory, Department of Chemical Engineering, Indian Institute of Technology Kharagpur, Pin - 721302, Kharagpur, West Bengal, India
| | - Guang Chen
- Department of Mechanical Engineering, University of Maryland, College Park, MD-20742, USA.
| | - Shayandev Sinha
- Department of Mechanical Engineering, University of Maryland, College Park, MD-20742, USA.
| | - Rabibrata Mukherjee
- Instability and Soft Patterning Laboratory, Department of Chemical Engineering, Indian Institute of Technology Kharagpur, Pin - 721302, Kharagpur, West Bengal, India
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Chen G, Das S. Streaming potential and electroviscous effects in soft nanochannels beyond Debye–Hückel linearization. J Colloid Interface Sci 2015; 445:357-363. [DOI: 10.1016/j.jcis.2014.12.088] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2014] [Accepted: 12/25/2014] [Indexed: 01/27/2023]
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26
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McDaniel K, Valcius F, Andrews J, Das S. Electrostatic potential distribution of a soft spherical particle with a charged core and pH-dependent charge density. Colloids Surf B Biointerfaces 2015; 127:143-7. [DOI: 10.1016/j.colsurfb.2015.01.025] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2014] [Revised: 01/11/2015] [Accepted: 01/14/2015] [Indexed: 10/24/2022]
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27
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Chen G, Das S. Electrostatics of soft charged interfaces with pH-dependent charge density: effect of consideration of appropriate hydrogen ion concentration distribution. RSC Adv 2015. [DOI: 10.1039/c4ra13946a] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
Explicit consideration of hydrogen ion concentration for describing the electrostatics of grafted polyelectrolyte layers with pH-dependent charge density exhibits the necessity of considering a non-uniform depth dependent monomer distribution.
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Affiliation(s)
- Guang Chen
- Department of Mechanical Engineering
- University of Maryland
- College Park
- USA
| | - Siddhartha Das
- Department of Mechanical Engineering
- University of Maryland
- College Park
- USA
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28
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Das S. Explicit interrelationship between Donnan and surface potentials and explicit quantification of capacitance of charged soft interfaces with pH-dependent charge density. Colloids Surf A Physicochem Eng Asp 2014. [DOI: 10.1016/j.colsurfa.2014.08.017] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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29
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Zimmermann R, Romeis D, Bihannic I, Cohen Stuart M, Sommer JU, Werner C, Duval JFL. Electrokinetics as an alternative to neutron reflectivity for evaluation of segment density distribution in PEO brushes. SOFT MATTER 2014; 10:7804-7809. [PMID: 25144904 DOI: 10.1039/c4sm01315h] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Unravelling details of charge, structure and molecular interactions of functional polymer coatings defines an important analytical challenge that requires the extension of current methodologies. In this article we demonstrate how streaming current measurements interpreted with combined self consistent field (SCF) and soft surface electrokinetic theories allow the evaluation of the segment distribution within poly(ethylene oxide) (PEO) brushes beyond the resolution limits of neutron reflectivity technique.
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Affiliation(s)
- Ralf Zimmermann
- Leibniz Institute of Polymer Research Dresden, Max Bergmann Center of Biomaterials Dresden, Hohe Strasse 6, 01069 Dresden, Germany.
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30
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Chanda S, Sinha S, Das S. Streaming potential and electroviscous effects in soft nanochannels: towards designing more efficient nanofluidic electrochemomechanical energy converters. SOFT MATTER 2014; 10:7558-7568. [PMID: 25112236 DOI: 10.1039/c4sm01490a] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
In this paper we provide analytical solutions for the streaming potential and electroviscous effects in soft nanochannels. The analysis is based on the solution of the linearized Poisson-Boltzmann equation, valid for small electrostatic potentials. We identify the important dimensionless parameters that dictate these two effects. Results are provided for a large range of electric double layer (EDL) thickness values, spanning from the case of very thin to very large overlapped EDL thicknesses. We compare the results with those of a rigid nanochannel, having zeta potential equal to the electrostatic potential at the solid-polyelectrolyte interface of the soft nanochannels. For the soft nanochannel, the streaming potential varies very weakly with the EDL thickness and can be substantially larger than that corresponding to the rigid nanochannel. The electroviscous effects for the soft nanochannel, unlike the rigid nanochannel, virtually always exhibit a monotonic decrease with the EDL thickness, and for certain parameter ranges can be several times larger than that for a rigid nanochannel. Most importantly, for the soft nanochannels the electrochemomechanical energy conversion, associated with the generation of streaming potential, is found to be highly efficient, with the efficiency being several times higher than that of a rigid nanochannel.
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Affiliation(s)
- Sourayon Chanda
- Department of Mechanical Engineering, University of Alberta, Edmonton, Alberta, Canada T6G 2G8
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31
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Kortschot RJ, Lyklema J, Philipse AP, Erné BH. Diverging electrophoretic and dynamic mobility of model silica colloids at low ionic strength in ethanol. J Colloid Interface Sci 2014; 422:65-70. [PMID: 24655830 DOI: 10.1016/j.jcis.2014.02.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2014] [Accepted: 02/07/2014] [Indexed: 11/28/2022]
Abstract
Electroacoustics and laser Doppler electrophoresis were employed to measure the mobility of surface-modified silica colloids in ethanol as a function of the ionic strength. Sufficiently low volume fractions were chosen to exclude effects of interparticle interactions. At high ionic strength, the electrophoretic mobility μ(e) is equal to the (electroacoustic) dynamic mobility μ(d) at 3.3 MHz. However, the ratio μ(d)/μ(e) increases significantly to ∼5 at low ionic strength. This increase may be related to the porous outer layer of the surface-modified silica spheres.
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Affiliation(s)
- R J Kortschot
- Van 't Hoff Laboratory for Physical and Colloid Chemistry, Debye Institute for Nanomaterials Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands.
| | - J Lyklema
- Laboratory for Physical Chemistry and Colloid Science of Wageningen University, Dreijenplein 6, 6703 HB Wageningen, The Netherlands.
| | - A P Philipse
- Van 't Hoff Laboratory for Physical and Colloid Chemistry, Debye Institute for Nanomaterials Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands.
| | - B H Erné
- Van 't Hoff Laboratory for Physical and Colloid Chemistry, Debye Institute for Nanomaterials Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands.
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32
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Duval JFL, Farinha JPS, Pinheiro JP. Impact of electrostatics on the chemodynamics of highly charged metal-polymer nanoparticle complexes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:13821-13835. [PMID: 24117349 DOI: 10.1021/la403106m] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
In this work, the impact of electrostatics on the stability constant, the rate of association/dissociation, and the lability of complexes formed between Cd(II), Pb(II), and carboxyl-modified polymer nanoparticles (also known as latex particles) of radius ∼ 50 nm is systematically investigated via electroanalytical measurements over a wide range of pHs and NaNO3 electrolyte concentrations. The corresponding interfacial structure and key electrostatic properties of the particles are independently derived from their electrokinetic response, successfully interpreted using soft particle electrohydrodynamic formalism, and complemented by Förster resonance energy transfer (FRET) analysis. The results underpin the presence of an ∼0.7-1 nm thick permeable and highly charged shell layer at the surface of the polymer nanoparticles. Their electrophoretic mobility further exhibits a minimum versus NaNO3 concentration due to strong polarization of the electric double layer. Integrating these structural and electrostatic particle features with recent theory on chemodynamics of particulate metal complexes yields a remarkable recovery of the measured increase in complex stability with increasing pH and/or decreasing solution salinity. In the case of the strongly binding Pb(II), the discrepancy at pH > 5.5 is unambiguously assigned to the formation of multidendate complexes with carboxylate groups located in the particle shell. With increasing pH and/or decreasing electrolyte concentration, the theory further predicts a kinetically controlled formation of metal complexes and a dramatic loss of their lability (especially for lead) on the time-scale of diffusion toward a macroscopic reactive electrode surface. These theoretical findings are again shown to be in agreement with experimental evidence.
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Affiliation(s)
- Jérôme F L Duval
- Laboratoire Interdisciplinaire des Environnements Continentaux (LIEC), Université de Lorraine , UMR 7360, 15 avenue du Charmois, Vandœuvre-lès-Nancy, F-54501, France
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33
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Repovsky D, Jane E, Palszegi T, Slobodnik M, Velic D. Formation Mechanism of a Silane-PVA/PVAc Complex Film on a Glass Fiber Surface. Chemphyschem 2013; 14:3569-80. [DOI: 10.1002/cphc.201300608] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2013] [Indexed: 11/11/2022]
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34
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Barbati AC, Kirby BJ. Force and flux relations for flows of ionic solutions between parallel plates with porous and charged layers. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2013; 88:042408. [PMID: 24229190 DOI: 10.1103/physreve.88.042408] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2013] [Indexed: 06/02/2023]
Abstract
We derive coefficients of the electrokinetic coupling matrix (χ(11), χ(12), and χ(21)) for the flow of an ionic solution through a parallel-plate geometry having porous and charged layers grafted onto a solid surface with a known potential and demonstrate Onsager reciprocity for the cross terms (i.e., χ(12)=χ(21)). Our results enable the prediction of system outputs in the solid-porous-fluid system from parameters that are either known or may be measured and inferred. These electrokinetic coupling coefficients are in terms of the potential, ϕ, and fixed charge, ρ(f), only, removing dependence on field gradients and fluid velocity. Additionally, we present simplified expressions of these coupling coefficients in limiting regions of the parameter space. Away from these limits, we present numerical results demonstrating the facility of our functional form for facile numerical approximation and report the utility and accuracy of our analytical approximations.
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Affiliation(s)
- Alexander C Barbati
- Sibley School of Mechanical and Aerospace Engineering and Cornell University and Ithaca, New York 14853, USA
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35
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Zimmermann R, Dukhin SS, Werner C, Duval JF. On the use of electrokinetics for unraveling charging and structure of soft planar polymer films. Curr Opin Colloid Interface Sci 2013. [DOI: 10.1016/j.cocis.2013.02.001] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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36
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Duval JFL. Dynamics of metal uptake by charged biointerphases: bioavailability and bulk depletion. Phys Chem Chem Phys 2013; 15:7873-88. [DOI: 10.1039/c3cp00002h] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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37
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Déon S, Fievet P, Osman Doubad C. Tangential streaming potential/current measurements for the characterization of composite membranes. J Memb Sci 2012. [DOI: 10.1016/j.memsci.2012.08.038] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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38
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Xu X, Chen S, Wu Q. Surface molecular imprinting on polypropylene fibers for rhodamine B selective adsorption. J Colloid Interface Sci 2012; 385:193-201. [DOI: 10.1016/j.jcis.2012.07.013] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2012] [Revised: 07/02/2012] [Accepted: 07/03/2012] [Indexed: 11/24/2022]
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39
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Zimmermann R, Bartsch S, Freudenberg U, Werner C. Electrokinetic analysis to reveal composition and structure of biohybrid hydrogels. Anal Chem 2012; 84:9592-5. [PMID: 23030581 DOI: 10.1021/ac302538j] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Biohybrid hydrogels combining electrically neutral synthetic polymers and highly anionic glycosaminoglycans (GAGs) offer exciting options for regenerative therapies as they allow for the electrostatic conjugation of various growth factors. Unraveling details of ionization and structure within such networks defines an important analytical challenge that requires the extension of current methodologies. Here, we present a mean-field approach to quantify the density of ionizable groups, GAG concentration, and cross-linking degree of such hydrogels based on experimental data from microslit electrokinetics and ellipsometry. An exemplary poly(ethylene glycol)-heparin system was analyzed to demonstrate how electrostatic fingerprints of hydrogels obtained by the introduced strategy can sensitively display composition and structure of the polymer networks.
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Affiliation(s)
- Ralf Zimmermann
- Leibniz Institute of Polymer Research Dresden, Max Bergmann Center of Biomaterials Dresden, Hohe Strasse 6, 01069 Dresden, Germany.
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40
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Duval JFL, van Leeuwen HP. Rates of Ionic Reactions With Charged Nanoparticles In Aqueous Media. J Phys Chem A 2011; 116:6443-51. [DOI: 10.1021/jp209488v] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Jérôme F. L. Duval
- Laboratoire Environnement et Minéralurgie, Nancy-University, CNRS UMR 7569, 15 avenue du Charmois, B.P. 40, 54501 Vandoeuvre-lès-Nancy Cedex, France
| | - Herman P. van Leeuwen
- Laboratory of Physical Chemistry and Colloid Science, Wageningen University, Dreijenplein 6, 6703 HB Wageningen, The Netherlands
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