1
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Water-Mediated attraction between Like-charged species involved in calcium phosphate nucleation. J Mol Liq 2023. [DOI: 10.1016/j.molliq.2023.121585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/12/2023]
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2
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Mehta S, Bahadur J, Sen D, Aswal VK, Kohlbrecher J. Unravelling Polyethylenimine Mediated Non-monotonic Stability Behaviour of Silica Colloids: Role of Competing Electrostatic and Entropic Interactions. Phys Chem Chem Phys 2022; 24:21740-21749. [DOI: 10.1039/d2cp02699f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Polymer-mediated interactions play an important role in the stability of the colloids and therefore, are paramount for both fundamental as well as scientific interests. The stability of the colloids in...
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Stornes M, Shrestha B, Dias RS. pH-Dependent Polyelectrolyte Bridging of Charged Nanoparticles. J Phys Chem B 2018; 122:10237-10246. [PMID: 30351110 DOI: 10.1021/acs.jpcb.8b06971] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Systems comprised of polyelectrolytes and charged nanoparticles are of great technological interest, being common components in formulations among other uses. The colloidal stability of formulations is an important issue, and thus a lot of effort has been made to study the interactions of individual components in these systems. Here, the complexation and adsorption of an annealed (pH-dependent) polyelectrolyte to two spherical nanoparticles has been studied using coarse-grained Monte Carlo simulations. This has been done mainly by varying the solution pH and separation distance (concentration) between the nanoparticles. The polyelectrolyte charge distribution is seen to vary with nanoparticle separation distance, and its ability to bridge both nanoparticles changes with pH. The flexible polyelectrolyte creates compact, multilink bridges at short nanoparticle separation distances and evolves to a stretched single-link bridge at longer distances, where a larger fraction of the polyelectrolyte wraps around the nanoparticles. The annealed polyelectrolyte is also compared with a quenched polyelectrolyte of similar fixed fractional charge. Here, a difference is found in the adsorption ability at low pH/ionization due to the ability of the annealed polyelectrolytes to concentrate charges in the vicinity of the nanoparticle. At intermediate polyelectrolyte charge fractions and with increasing nanoparticle separation distances, the annealed system is able to link nanoparticles at larger distances as compared to the quenched, in good agreement with experimental observations. The results in this work contribute to the understanding of the effect of annealed polyelectrolytes and pH variations in the phase behavior of polyelectrolyte-nanoparticle systems, potentially aiding in the design and optimization of pH-responsive systems.
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Affiliation(s)
- Morten Stornes
- Department of Physics , NTNU-Norwegian University of Science and Technology , NO-7491 Trondheim , Norway
| | - Binamra Shrestha
- Department of Physics , NTNU-Norwegian University of Science and Technology , NO-7491 Trondheim , Norway
| | - Rita S Dias
- Department of Physics , NTNU-Norwegian University of Science and Technology , NO-7491 Trondheim , Norway
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4
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Truzzolillo D, Sennato S, Sarti S, Casciardi S, Bazzoni C, Bordi F. Overcharging and reentrant condensation of thermoresponsive ionic microgels. SOFT MATTER 2018; 14:4110-4125. [PMID: 29664092 PMCID: PMC5968447 DOI: 10.1039/c7sm02357j] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
We investigated the complexation of thermoresponsive anionic poly(N-isopropylacrylamide) (PNiPAM) microgels and cationic ε-polylysine (ε-PLL) chains. By combining electrophoresis, light scattering, transmission electron microscopy (TEM) and dielectric spectroscopy (DS) we studied the adsorption of ε-PLL onto microgel networks and its effect on the stability of suspensions. We show that the volume phase transition (VPT) of microgels triggers a large polyion adsorption. Two interesting phenomena with unique features occur: a temperature-dependent microgel overcharging and a complex reentrant condensation. The latter may occur at fixed polyion concentration, when temperature is raised above the VPT of microgels, or by increasing the number density of polycations at fixed temperature. TEM and DS measurements unambiguously show that short PLL chains adsorb onto microgels and act as electrostatic glue above the VPT. By performing thermal cycles, we further show that polyion-induced clustering is a quasi-reversible process: within the time of our experiments large clusters form above the VPT and partially re-dissolve as the mixtures are cooled down. Finally we give a proof that the observed phenomenology is purely electrostatic in nature: an increase of the ionic strength gives rise to polyion desorption from the microgel outer shell.
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Affiliation(s)
- Domenico Truzzolillo
- Laboratoire Charles Coulomb (L2C), UMR 5221 CNRS-Université de Montpellier , 4 F-34095 Montpellier , France .
| | - Simona Sennato
- CNR-ISC UOS Roma, c/o Dipartimento di Fisica, Sapienza Università di Roma , P.le A. Moro 2 , 00185 Roma , Italy
| | - Stefano Sarti
- Dipartimento di Fisica, Sapienza Università di Roma , P.zzle A. Moro 2 , 00185 Roma , Italy .
| | - Stefano Casciardi
- National Institute for Insurance against Accidents at Work (INAIL Research), Department of Occupational and Environmental Medicine, Epidemiology and Hygiene , Roma , Italy
| | - Chiara Bazzoni
- Dipartimento di Fisica, Sapienza Università di Roma , P.zzle A. Moro 2 , 00185 Roma , Italy .
| | - Federico Bordi
- CNR-ISC UOS Roma, c/o Dipartimento di Fisica, Sapienza Università di Roma , P.le A. Moro 2 , 00185 Roma , Italy
- Dipartimento di Fisica, Sapienza Università di Roma , P.zzle A. Moro 2 , 00185 Roma , Italy .
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Bassalah ME, Cerdà JJ, Sintes T, Aschi A, Othman T. Complex between cationic like-charged polyelectrolytes/surfactants systems. Eur Polym J 2017. [DOI: 10.1016/j.eurpolymj.2017.08.045] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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6
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Ahualli S, Martín-Molina A, Maroto-Centeno JA, Quesada-Pérez M. Interaction between Ideal Neutral Nanogels: A Monte Carlo Simulation Study. Macromolecules 2017. [DOI: 10.1021/acs.macromol.6b02333] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Silvia Ahualli
- Departamento
de Física Aplicada, Facultad de Ciencias, Universidad de Granada, 18071 Granada, Spain
| | - Alberto Martín-Molina
- Departamento
de Física Aplicada, Facultad de Ciencias, Universidad de Granada, 18071 Granada, Spain
| | | | - Manuel Quesada-Pérez
- Departamento
de Física, Escuela Politécnica Superior de Linares, Universidad de Jaén, 23700, Linares, Jaén, Spain
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7
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Yigit C, Heyda J, Ballauff M, Dzubiella J. Like-charged protein-polyelectrolyte complexation driven by charge patches. J Chem Phys 2016; 143:064905. [PMID: 26277164 DOI: 10.1063/1.4928078] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We study the pair complexation of a single, highly charged polyelectrolyte (PE) chain (of 25 or 50 monomers) with like-charged patchy protein models (CPPMs) by means of implicit-solvent, explicit-salt Langevin dynamics computer simulations. Our previously introduced set of CPPMs embraces well-defined zero-, one-, and two-patched spherical globules each of the same net charge and (nanometer) size with mono- and multipole moments comparable to those of globular proteins with similar size. We observe large binding affinities between the CPPM and the like-charged PE in the tens of the thermal energy, kBT, that are favored by decreasing salt concentration and increasing charge of the patch(es). Our systematic analysis shows a clear correlation between the distance-resolved potentials of mean force, the number of ions released from the PE, and CPPM orientation effects. In particular, we find a novel two-site binding behavior for PEs in the case of two-patched CPPMs, where intermediate metastable complex structures are formed. In order to describe the salt-dependence of the binding affinity for mainly dipolar (one-patched) CPPMs, we introduce a combined counterion-release/Debye-Hückel model that quantitatively captures the essential physics of electrostatic complexation in our systems.
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Affiliation(s)
- Cemil Yigit
- Soft Matter and Functional Materials, Helmholtz-Zentrum Berlin, 14109 Berlin, Germany
| | - Jan Heyda
- Department of Physical Chemistry, University of Chemistry and Technology, Prague, 166 28 Praha 6, Czech Republic
| | - Matthias Ballauff
- Soft Matter and Functional Materials, Helmholtz-Zentrum Berlin, 14109 Berlin, Germany
| | - Joachim Dzubiella
- Soft Matter and Functional Materials, Helmholtz-Zentrum Berlin, 14109 Berlin, Germany
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8
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Kewalramani S, Guerrero-García G, Moreau LM, Zwanikken JW, Mirkin CA, Olvera de la Cruz M, Bedzyk MJ. Electrolyte-Mediated Assembly of Charged Nanoparticles. ACS CENTRAL SCIENCE 2016; 2:219-24. [PMID: 27163052 PMCID: PMC4850508 DOI: 10.1021/acscentsci.6b00023] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2016] [Indexed: 05/23/2023]
Abstract
Solutions at high salt concentrations are used to crystallize or segregate charged colloids, including proteins and polyelectrolytes via a complex mechanism referred to as "salting-out". Here, we combine small-angle X-ray scattering (SAXS), molecular dynamics (MD) simulations, and liquid-state theory to show that salting-out is a long-range interaction, which is controlled by electrolyte concentration and colloid charge density. As a model system, we analyze Au nanoparticles coated with noncomplementary DNA designed to prevent interparticle assembly via Watson-Crick hybridization. SAXS shows that these highly charged nanoparticles undergo "gas" to face-centered cubic (FCC) to "glass-like" transitions with increasing NaCl or CaCl2 concentration. MD simulations reveal that the crystallization is concomitant with interparticle interactions changing from purely repulsive to a "long-range potential well" condition. Liquid-state theory explains this attraction as a sum of cohesive and depletion forces that originate from the interelectrolyte ion and electrolyte-ion-nanoparticle positional correlations. Our work provides fundamental insights into the effect of ionic correlations in the salting-out mechanism and suggests new routes for the crystallization of colloids and proteins using concentrated salts.
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Affiliation(s)
- Sumit Kewalramani
- Materials
Science and Engineering Department, Northwestern
University, Evanston, Illinois 60208, United
States
| | - Guillermo
I. Guerrero-García
- Materials
Science and Engineering Department, Northwestern
University, Evanston, Illinois 60208, United
States
- Instituto
de Física, Universidad Autónoma
de San Luis Potosí, Àlvaro Obregón 64, 78000 San Luis Potosí, San Luis Potosí, Mexico
| | - Liane M. Moreau
- Materials
Science and Engineering Department, Northwestern
University, Evanston, Illinois 60208, United
States
| | - Jos W. Zwanikken
- Materials
Science and Engineering Department, Northwestern
University, Evanston, Illinois 60208, United
States
| | - Chad A. Mirkin
- Materials
Science and Engineering Department, Northwestern
University, Evanston, Illinois 60208, United
States
- Department
of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Monica Olvera de la Cruz
- Materials
Science and Engineering Department, Northwestern
University, Evanston, Illinois 60208, United
States
- Department
of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
- Physics
and Astronomy Department, Northwestern University, Evanston, Illinois 60208, United States
| | - Michael J. Bedzyk
- Materials
Science and Engineering Department, Northwestern
University, Evanston, Illinois 60208, United
States
- Physics
and Astronomy Department, Northwestern University, Evanston, Illinois 60208, United States
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9
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Salt-induced reentrant stability of polyion-decorated particles with tunable surface charge density. Colloids Surf B Biointerfaces 2016; 137:109-20. [DOI: 10.1016/j.colsurfb.2015.06.011] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2015] [Revised: 06/03/2015] [Accepted: 06/04/2015] [Indexed: 01/17/2023]
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10
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Pryamitsyn V, Ganesan V. Pair interactions in polyelectrolyte-nanoparticle systems: Influence of dielectric inhomogeneities and the partial dissociation of polymers and nanoparticles. J Chem Phys 2015; 143:164904. [DOI: 10.1063/1.4934242] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Affiliation(s)
- Victor Pryamitsyn
- Department of Chemical Engineering, University of Texas at Austin, Austin, Texas 78712, USA
| | - Venkat Ganesan
- Department of Chemical Engineering and Institute for Computational and Engineering Sciences, University of Texas at Austin, Austin, Texas 78712, USA
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11
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Interplay between Depletion and Electrostatic Interactions in Polyelectrolyte–Nanoparticle Systems. Macromolecules 2014. [DOI: 10.1021/ma501014u] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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12
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Szilagyi I, Trefalt G, Tiraferri A, Maroni P, Borkovec M. Polyelectrolyte adsorption, interparticle forces, and colloidal aggregation. SOFT MATTER 2014; 10:2479-2502. [PMID: 24647366 DOI: 10.1039/c3sm52132j] [Citation(s) in RCA: 217] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
This review summarizes the current understanding of adsorption of polyelectrolytes to oppositely charged solid substrates, the resulting interaction forces between such substrates, and consequences for colloidal particle aggregation. The following conclusions can be reached based on experimental findings. Polyelectrolytes adsorb to oppositely charged solid substrates irreversibly up to saturation, whereby loose and thin monolayers are formed. The adsorbed polyelectrolytes normally carry a substantial amount of charge, which leads to a charge reversal. Frequently, the adsorbed films are laterally heterogeneous. With increasing salt levels, the adsorbed mass increases leading to thicker and more homogeneous films. Interaction forces between surfaces coated with saturated polyelectrolyte layers are governed at low salt levels by repulsive electric double layer interactions, and particle suspensions are stable under these conditions. At appropriately high salt levels, the forces become attractive, principally due to van der Waals interactions, but eventually also through other forces, and suspensions become unstable. This situation can be rationalized with the classical theory of Derjaguin, Landau, Verwey, and Overbeek (DLVO). Due to the irreversible nature of the adsorption process, stable unsaturated layers form in colloidal particle suspensions at lower polyelectrolyte doses. An unsaturated polyelectrolyte layer can neutralize the overall particle surface charge. Away from the charge reversal point, electric double layer forces are dominant and particle suspensions are stable. As the charge reversal point is approached, attractive van der Waals forces become important, and particle suspensions become unstable. This behaviour is again in line with the DLVO theory, which may even apply quantitatively, provided the polyelectrolyte films are sufficiently laterally homogeneous. For heterogeneous films, additional attractive patch-charge interactions may become important. Depletion interactions may also lead to attractive forces and suspension destabilization, but such interactions become important only at high polyelectrolyte concentrations.
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Affiliation(s)
- Istvan Szilagyi
- Department of Inorganic and Analytical Chemistry, University of Geneva, Sciences II, Quai Ernest-Ansermet 30, 1205 Geneva, Switzerland.
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13
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Larin SV, Darinskii AA. Interaction of interpolyelectrolyte complexes formed by a linear polyelectrolyte and dendrimers or spheres. POLYMER SCIENCE SERIES A 2014. [DOI: 10.1134/s0965545x14020084] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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14
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Strong and Weak Polyelectrolyte Adsorption onto Oppositely Charged Curved Surfaces. POLYELECTROLYTE COMPLEXES IN THE DISPERSED AND SOLID STATE I 2013. [DOI: 10.1007/12_2012_183] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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15
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Zhou S, Zhang G. Approximate analytic solution of the nonlinear Poisson–Boltzmann equation for spherical colloidal particles immersed in a general electrolyte solution. Colloid Polym Sci 2012. [DOI: 10.1007/s00396-012-2683-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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16
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Cerbelaud M, Lestriez B, Guyomard D, Videcoq A, Ferrando R. Brownian dynamics simulations of colloidal suspensions containing polymers as precursors of composite electrodes for lithium batteries. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:10713-10724. [PMID: 22738282 DOI: 10.1021/la302135v] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Dilute aqueous suspensions of silicon nanoparticles and sodium carboxymethylcellulose salt (CMC) are studied experimentally and numerically by brownian dynamics simulations. The study focuses on the adsorption of CMC on silicon and on the aggregation state as a function of the suspension composition. To perform simulations, a coarse-grained model has first been developed for the CMC molecules. Then, this model has been applied to study numerically the behavior of suspensions of silicon and CMC. Simulation parameters have been fixed on the basis of experimental characterizations. Results of brownian dynamics simulations performed with our model are found in qualitative good agreement with experiments and allow a good description of the main features of the experimental behavior.
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Affiliation(s)
- Manuella Cerbelaud
- Institut des Matériaux Jean Rouxel (IMN), Université de Nantes, CNRS, 2 rue de la Houssinière, BP32229, 44322 Nantes cedex 3, France.
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Optimising the self-assembly of siRNA loaded PEG-PCL-lPEI nano-carriers employing different preparation techniques. J Control Release 2012; 160:583-91. [DOI: 10.1016/j.jconrel.2012.04.013] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2011] [Revised: 04/02/2012] [Accepted: 04/04/2012] [Indexed: 11/17/2022]
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18
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Porus M, Maroni P, Borkovec M. Structure of adsorbed polyelectrolyte monolayers investigated by combining optical reflectometry and piezoelectric techniques. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:5642-5651. [PMID: 22283688 DOI: 10.1021/la204855j] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Polyelectrolyte monolayers on solid substrates are studied with optical reflectivity and the quartz crystal microbalance (QCM). In particular, we investigate the adsorption of anionic poly(styrene sulfonate) (PSS) on amino-functionalized silica as well as cationic poly(allylamine hydrochloride) (PAH) and poly-L-lysine (PLL) on bare silica. By comparing the dry and wet masses measured on identical substrates with these two techniques, we obtain information on the layer thickness and water content of these layers. Monolayers typically feature an adsorbed dry mass of about 0.1-2 mg/m(2), a layer thickness of 0.5-2 nm, and a water content of 20-50%. One finds that the layer thickness increases with increasing concentrations of monovalent salts and polyelectrolytes.
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Affiliation(s)
- Maria Porus
- Departement of Inorganic, Analytical and Applied Chemistry, University of Geneva, Geneva, Switzerland
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19
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Meyra AG, Zarragoicoechea GJ, Kuz VA. Monte Carlo simulation of Hamaker nanospheres coated with dipolar particles. Mol Phys 2012. [DOI: 10.1080/00268976.2011.634837] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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20
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Gazzillo D. Fluid of hard spheres with dipolar-like patch interaction and effect of adding an isotropic adhesion. Mol Phys 2011. [DOI: 10.1080/00268976.2010.521780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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21
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Seyrek E, Hierrezuelo J, Sadeghpour A, Szilagyi I, Borkovec M. Molecular mass dependence of adsorbed amount and hydrodynamic thickness of polyelectrolyte layers. Phys Chem Chem Phys 2011; 13:12716-9. [DOI: 10.1039/c1cp20654k] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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22
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Cametti C, Truzzolillo D. Many Facets of the Polyelectrolyte and Oppositely Charged Colloidal Particle Complexation: Counterion Release and Electrical Conductivity Behavior. J Phys Chem B 2010; 115:7248-55. [DOI: 10.1021/jp109326e] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- C. Cametti
- Dipartimento di Fisica, Università di Roma “La Sapienza”, Piazzale A. Moro 5, I-00185 - Rome, Italy, and INFM CRS-SOFT, Unità di Roma 1, Italy
| | - D. Truzzolillo
- Dipartimento di Fisica, Università di Roma “La Sapienza”, Piazzale A. Moro 5, I-00185 - Rome, Italy, and INFM CRS-SOFT, Unità di Roma 1, Italy
- Foundation for Research and Technology HELLAS (FORTH), Heraklion, Crete, Greece
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