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Yadav R, Sivoria N, Maiti S. Salt Gradient-Induced Phoresis of Vesicles and Enhanced Membrane Fusion in a Crowded Milieu. J Phys Chem B 2024. [PMID: 39295542 DOI: 10.1021/acs.jpcb.4c03985] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/21/2024]
Abstract
Phoresis of biocolloidal objects in response to chemical gradients is a matter of interest among diverse scientific disciplines owing to their importance in the spatiotemporal orchestration of biochemical processes. Although there are reports of soft matter transport/phoresis in the gradient of ions or salts in the aqueous system, their phoretic behavior in the presence of macromolecular crowder is largely unexplored. Notably, cellular cytoplasm is illustrated as a crowded milieu and thereby understanding biomolecular phoresis in the presence of polymeric macromolecules would endorse phoretic behavior in a biomimetic environment. Here, we report the phoresis-induced enhanced aggregation and fusion of vesicles in gradients of monovalent (NaCl) and divalent salt (MgCl2), in the presence of polymeric crowder, polyethylene glycol of molecular weight 400 (PEG 400). Apart from diffusiophoresis, depletion force plays a crucial factor in crowded environments to control localized vesicle aggregation in a salt gradient. This demonstration will potentially show the pathway to future research related to spatiotemporally correlated liposomal transport and membrane-dependent function (such as content mixing and signaling) in a physiologically relevant crowded environment.
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Affiliation(s)
- Reena Yadav
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Manauli, Knowledge City 140306, India
| | - Neetu Sivoria
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Manauli, Knowledge City 140306, India
| | - Subhabrata Maiti
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Manauli, Knowledge City 140306, India
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2
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Cook KR, Head D, Dougan L. Modelling network formation in folded protein hydrogels by cluster aggregation kinetics. SOFT MATTER 2023; 19:2780-2791. [PMID: 36988480 DOI: 10.1039/d3sm00111c] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
Globular folded protein-based hydrogels are becoming increasingly attractive due to their specific biological functionality, as well as their responsiveness to stimuli. By modelling folded proteins as colloids, there are rich opportunities to explore network formation mechanisms in protein hydrogels that negate the need for computationally expensive simulations which capture the full complexity of proteins. Here we present a kinetic lattice-based model which simulates the formation of irreversibly chemically crosslinked, folded protein-based hydrogels. We identify the critical point of gel percolation, explore the range of network regimes covering diffusion-limited to reaction-limited cluster aggregation (DLCA and RLCA, respectively) network formation mechanisms and predict the final network structure, fractal dimensions and final gel porosity. We reveal a crossover between DLCA and RLCA mechanisms as a function of protein volume fraction and show how the final network structure is governed by the structure at the percolation point, regardless of the broad variation of non-percolating cluster masses observed across all systems. An analysis of the pore size distribution in the final network structures reveals that, approaching RLCA, gels have larger maximal pores than the DLCA counterparts for both volume fractions studied. This general kinetic model and the analysis tools generate predictions of network structure and concurrent porosity over a broad range of experimentally controllable parameters that are consistent with current expectations and understanding of experimental results.
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Affiliation(s)
- Kalila R Cook
- School of Physics and Astronomy, Faculty of Engineering and Physical Sciences, University of Leeds, Leeds, UK.
| | - David Head
- School of Computing, University of Leeds, Leeds, UK
| | - Lorna Dougan
- School of Physics and Astronomy, Faculty of Engineering and Physical Sciences, University of Leeds, Leeds, UK.
- Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds, UK
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3
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A study of effects of the non-DLVO interparticle interactions on aggregation rate. Colloid Polym Sci 2022. [DOI: 10.1007/s00396-022-04955-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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4
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Pipich V, Starc T, Buitenhuis J, Kasher R, Petry W, Oren Y, Schwahn D. Silica Fouling in Reverse Osmosis Systems- Operando Small-Angle Neutron Scattering Studies. MEMBRANES 2021; 11:membranes11060413. [PMID: 34070912 PMCID: PMC8230220 DOI: 10.3390/membranes11060413] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 05/20/2021] [Accepted: 05/27/2021] [Indexed: 11/16/2022]
Abstract
We present operando small-angle neutron scattering (SANS) experiments on silica fouling at two reverse osmose (RO) membranes under almost realistic conditions of practiced RO desalination technique. To its realization, two cells were designed for pressure fields and tangential feed cross-flows up to 50 bar and 36 L/h, one cell equipped with the membrane and the other one as an empty cell to measure the feed solution in parallel far from the membrane. We studied several aqueous silica dispersions combining the parameters of colloidal radius, volume fraction, and ionic strength. A relevant result is the observation of Bragg diffraction as part of the SANS scattering pattern, representing a crystalline cake layer of simple cubic lattice structure. Other relevant parameters are silica colloidal size and volume fraction far from and above the membrane, as well as the lattice parameter of the silica cake layer, its volume fraction, thickness, and porosity in comparison with the corresponding permeate flux. The experiments show that the formation of cake layer depends to a large extent on colloidal size, ionic strength and cross-flow. Cake layer formation proved to be a reversible process, which could be dissolved at larger cross-flow. Only in one case we observed an irreversible cake layer formation showing the characteristics of an unstable phase transition. We likewise observed enhanced silica concentration and/or cake formation above the membrane, giving indication of a first order liquid-solid phase transformation.
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Affiliation(s)
- Vitaliy Pipich
- Jülich Centre for Neutron Science JCNS-FRM II, Outstation at FRM II, Lichtenbergstr. 1, D-85747 Garching, Germany;
| | - Thomas Starc
- Neutron Scattering and Soft Matter (JCNS-1/IBI-8), Forschungszentrum Jülich GmbH, D-52425 Jülich, Germany;
| | - Johan Buitenhuis
- Biomacromolecular Systems and Processes (IBI-4), Forschungszentrum Jülich GmbH, D-52425 Jülich, Germany;
| | - Roni Kasher
- Zuckerberg Institute for Water Research, Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Midreshet Ben-Gurion 8499000, Israel; (R.K.); (Y.O.)
| | - Winfried Petry
- Heinz Maier-Leibnitz-Zentrum (MLZ), Technische Universität München, Lichtenbergstr. 1, D-85748 Garching, Germany;
| | - Yoram Oren
- Zuckerberg Institute for Water Research, Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Midreshet Ben-Gurion 8499000, Israel; (R.K.); (Y.O.)
| | - Dietmar Schwahn
- Neutron Scattering and Soft Matter (JCNS-1/IBI-8), Forschungszentrum Jülich GmbH, D-52425 Jülich, Germany;
- Correspondence:
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5
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Pathreeker S, Chen FH, Biria S, Hosein ID. Observation of intensity dependent phase-separation in photoreactive monomer-nanoparticle formulations under non-uniform visible light irradiation. SOFT MATTER 2020; 16:7256-7269. [PMID: 32632433 DOI: 10.1039/d0sm00922a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
We report observations of photopolymerization driven phase-separation in a mixture of a photo-reactive monomer and inorganic nanoparticles. The mixture is irradiated with visible light possessing a periodic intensity profile that elicits photopolymerization along the depth of the mixture, establishing a competition between photo-crosslinking and thermodynamically favorable phase-separating behavior inherent to the system. In situ Raman spectroscopy was used to monitor the polymerization reaction and morphology evolution, and reveals a key correlation between irradiation intensity and composite morphology extending the entire depth of the mixture, i.e. unhindered phase-separation at low irradiation intensity and arrested phase-separation at high irradiation intensity. 3D Raman volume mapping and energy dispersive X-ray mapping confirm that the intensity-dependent irradiation process dictates the extent of phase separation, enabling single-parameter control over phase evolution and subsequent composite morphology. These observations can potentially enable a single-step route to develop polymer-inorganic composite materials with tunable morphologies.
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Affiliation(s)
- Shreyas Pathreeker
- Department of Biomedical & Chemical Engineering, Syracuse University, Syracuse, New York 13244, USA.
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6
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Shabaniverki S, Thorud S, Juárez JJ. Vibrationally directed assembly of micro- and nanoparticle-polymer composites. Chem Eng Sci 2018. [DOI: 10.1016/j.ces.2018.06.068] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Reddy NK, Natale G, Prud'homme RK, Vermant J. Rheo-optical Analysis of Functionalized Graphene Suspensions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:7844-7851. [PMID: 29883124 DOI: 10.1021/acs.langmuir.8b01574] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Wet processing of graphene sheets is a potentially interesting route for the economically viable creation of graphene-based composites. In the present work, flow dichroism and small-angle light scattering are used to investigate the dispersion of functionalized graphene sheets in a suspension and their response to shear flow. In line with expectations from scaling theory at rest, the functionalized graphene sheets are present as Brownian flat sheets, and there is no evidence of significant crumpling. More surprisingly, we find that the rate-dependent orientation of these molecularly thin sheets can be described by numerical predictions for hard spheroidal sheets, making quantitative predictions of the flow-induced orientation possible. Further comparison of the flow-induced orientation of thick gold decahedra with the thin graphene sheets shows that, except for effects of polydispersity, the flow-induced orientation is predicted well quantitatively. Adequate prediction of the effects of flow on the orientation of graphene sheets makes it possible to design wet processed graphene-based composite materials.
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Affiliation(s)
- Naveen K Reddy
- Hasselt University , Martelarenlaan 42 , 3500 Hasselt , Belgium
- IMO-IMOMEC , Wetenschapspark 1 , 3590 Diepenbeek , Belgium
| | - Giovanniantonio Natale
- Department of Chemical and Petroleum Engineering , University of Calgary , 2500 University Drive NW , Calgary , Alberta T2N 1N4 , Canada
| | - Robert K Prud'homme
- Department of Chemical and Biological Engineering , Princeton University , Princeton , New Jersey 08544 , United States
| | - Jan Vermant
- Department of Materials , ETH Zürich , Vladimir-Prelog-Weg 5 , Zürich CH-8093 , Switzerland
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8
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Chung K, Lee S, Park M, Yoo P, Hong Y. Preparation and characterization of microcapsule-containing self-healing asphalt. J IND ENG CHEM 2015. [DOI: 10.1016/j.jiec.2015.04.011] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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9
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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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11
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Rose S, Marcellan A, Hourdet D, Creton C, Narita T. Dynamics of Hybrid Polyacrylamide Hydrogels Containing Silica Nanoparticles Studied by Dynamic Light Scattering. Macromolecules 2013. [DOI: 10.1021/ma4004874] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Séverine Rose
- Laboratoire SIMM-PPMD, UMR7615, UPMC-ESPCI ParisTech-CNRS, 10 Rue Vauquelin, 75231 Paris Cedex05,
France
| | - Alba Marcellan
- Laboratoire SIMM-PPMD, UMR7615, UPMC-ESPCI ParisTech-CNRS, 10 Rue Vauquelin, 75231 Paris Cedex05,
France
| | - Dominique Hourdet
- Laboratoire SIMM-PPMD, UMR7615, UPMC-ESPCI ParisTech-CNRS, 10 Rue Vauquelin, 75231 Paris Cedex05,
France
| | - Costantino Creton
- Laboratoire SIMM-PPMD, UMR7615, UPMC-ESPCI ParisTech-CNRS, 10 Rue Vauquelin, 75231 Paris Cedex05,
France
| | - Tetsuharu Narita
- Laboratoire SIMM-PPMD, UMR7615, UPMC-ESPCI ParisTech-CNRS, 10 Rue Vauquelin, 75231 Paris Cedex05,
France
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12
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Roux R, Ladavière C, Montembault A, Delair T. Particle assemblies: toward new tools for regenerative medicine. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2012; 33:997-1007. [PMID: 23827536 DOI: 10.1016/j.msec.2012.12.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2012] [Revised: 11/14/2012] [Accepted: 12/01/2012] [Indexed: 01/22/2023]
Abstract
Regenerative medicine is a demanding field in terms of design and elaboration of materials able to meet the specifications that this application imposes. The regeneration of tissue is a multiscale issue, from the signaling molecule through cell expansion and finally tissue growth requiring a large variety of cues that should be delivered in place and time. Hence, the materials should be able to accommodate cells with respect to their phenotypes, to allow cell division to the right tissue, to maintain the integrity of the surrounding sane tissue, and eventually use their signaling machinery to serve the development of the appropriate neo-tissue. They should also present the ability to deliver growth factors and regulate tissue development, to be degraded into safe products, in order not to impede tissue development, and finally be easily implanted/injected into the patients. In this context, colloid-based materials represent a very promising family of products because one can take advantage of their high specific area, their capability to carry/deliver bio-active molecules, and their capacity of assembling (eventually in vivo) into materials featuring other mechanical, rheological, physicochemical properties. Other benefits of great interest would be their ease of production even via high through-put processes and their potential manufacturing from safe, biodegradable and biocompatible parent raw material. This review describes the state-of-the-art of processes leading to complex materials from the assembly of colloids meeting, at least partially, the above-described specifications for tissue engineering and regenerative medicine.
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Affiliation(s)
- R Roux
- Université de Lyon, Université Lyon 1, IMP@LYON1, UMR CNRS 5223, 15 bld Latarjet, 69622, Villeurbanne Cedex, France
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13
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Peláez-Fernández M, Moncho-Jordá A, García-Jimeno S, Estelrich J, Callejas-Fernández J. Role of the electrostatic depletion attraction on the structure of charged liposome-polymer mixtures. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2012; 85:051405. [PMID: 23004759 DOI: 10.1103/physreve.85.051405] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2011] [Revised: 12/14/2011] [Indexed: 06/01/2023]
Abstract
The effect of adding charged nonadsorbing polymers to electrostatically structured suspensions of charged liposomes has been experimentally studied by means of light scattering techniques. The static structure factor of the mixtures is analyzed using two polymers of different sizes. As the polymer concentration increases, the main peak of the structure factor decreases and shows an important shift to larger values of the scattering vector. Such displacement is the consequence of the electrostatic-enhanced depletion attraction induced by the polymers that counteracts the electrostatic repulsion. For the shorter polymer, the system remains stable for all studied polymer concentrations. However, for the long polymer chains, the effective attraction induced at the highest polymer density studied is strong enough to destabilize the mixture. In this case, the aggregation of the liposomes leads to clusters of nearly linear morphology. The PRISM theory is employed to calculate the effective pair potential between liposomes. The theoretical predictions are able to support the experimental observations, and provide an explanation of the interplay between the electrostatic repulsive interaction and the depletion attraction. In particular, they show that the depletion attraction is especially long ranged, and is dominated by electrostatic effects rather than entropic.
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Affiliation(s)
- M Peláez-Fernández
- Grupo de Física de Fluidos y Biocoloides, Departamento de Física Aplicada, Facultad de Ciencias, Universidad de Granada, E-18071 Granada, Spain
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14
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Li Y, Shi T, An L, Huang Q. Monte Carlo Simulation on Complex Formation of Proteins and Polysaccharides. J Phys Chem B 2012; 116:3045-53. [DOI: 10.1021/jp206527p] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Yunqi Li
- Department
of Food Science, Rutgers University, 65
Dudley Road, New Brunswick,
New Jersey 08901, United States
| | - Tongfei Shi
- State Key Laboratory of Polymer
Physics and Chemistry, Changchun Institute of Applied Chemistry, Changchun 130022, P. R. China
| | - Lijia An
- State Key Laboratory of Polymer
Physics and Chemistry, Changchun Institute of Applied Chemistry, Changchun 130022, P. R. China
| | - Qingrong Huang
- Department
of Food Science, Rutgers University, 65
Dudley Road, New Brunswick,
New Jersey 08901, United States
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16
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Zhou J, van Duijneveldt JS, Vincent B. Phase separation in mixtures of two sizes of silica particles dispersed in DMF on the addition of polystyrene. Mol Phys 2011. [DOI: 10.1080/00268976.2011.554331] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Zhou J, van Duijneveldt JS, Vincent B. The phase behavior of dispersions of silica particles in mixtures of polystyrene and dimethylformamide. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:9397-9402. [PMID: 20232835 DOI: 10.1021/la1003963] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Depletion-induced phase separation in mixtures of charged silica particles and nonadsorbing polymer near theta conditions (polystyrene in dimethylformamide) was studied. The colloid-polymer size ratio q was varied through the particle size and the electrical double layer thickness (kappa(-1)) through addition of lithium chloride (LiCl). The dependence of the phase boundaries, and the nature of the separated phases, on q and kappa is reported and is found to be in good agreement with recent theoretical predictions (Gogelein, C.; Tuinier, R. Eur. Phys. J., E 2008, 27, 171-184).
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Affiliation(s)
- Juan Zhou
- School of Chemistry, University of Bristol, Bristol BS8 1TS, UK
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Tam JM, Murthy AK, Ingram DR, Nguyen R, Sokolov KV, Johnston KP. Kinetic assembly of near-IR-active gold nanoclusters using weakly adsorbing polymers to control the size. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:8988-99. [PMID: 20361735 PMCID: PMC3818108 DOI: 10.1021/la904793t] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Clusters of metal nanoparticles with an overall size of less than 100 nm and high metal loadings for strong optical functionality are of interest in various fields including microelectronics, sensors, optoelectronics, and biomedical imaging and therapeutics. Herein we assemble approximately 5 nm gold particles into clusters with controlled size, as small as 30 nm and up to 100 nm, that contain only small amounts of polymeric stabilizers. The assembly is kinetically controlled with weakly adsorbing polymers, PLA(2K)-b-PEG(10K)-b-PLA(2K) or PEG (MW = 3350), by manipulating electrostatic, van der Waals (VDW), steric, and depletion forces. The cluster size and optical properties are tuned as a function of particle volume fractions and polymer/gold ratios to modulate the interparticle interactions. The close spacing between the constituent gold nanoparticles and high gold loadings (80-85 w/w gold) produce a strong absorbance cross section of approximately 9 x 10(-15) m(2) in the NIR at 700 nm. This morphology results from VDW and depletion attractive interactions that exclude the weakly adsorbed polymeric stabilizer from the cluster interior. The generality of this kinetic assembly platform is demonstrated for gold nanoparticles with a range of surface charges from highly negative to neutral with the two different polymers.
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Affiliation(s)
- Jasmine M Tam
- Department of Chemical Engineering, University of Texas at Austin, Austin, Texas 78712, USA
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