Electrostatic Self-Assembly of Silica Nanoparticle−Polyelectrolyte Multilayers on Polystyrene Latex Particles

Caruso, Frank; Lichtenfeld, Heinz; Giersig, Michael; Möhwald, Helmuth

doi:10.1021/ja9815024

Cited by 484 publications

(361 citation statements)

References 24 publications

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“…These particular trends are also general to other multilayered polyelectrolyte combinations, and can be rationalized by considering the charge density and hydrophilic/ hydrophobic character of the surface on which the polymer adsorbs. 15,35 For example, when the assembly conditions become more acidic, films terminated in PAH are highly charged because the amine functional groups of the chains are mostly in the NH 3 + state. Hence, the approaching HA chains must increase the number of dissociated carboxylic acid groups to compensate for the high population of NH 3 + groups.…”

Section: Resultsmentioning

confidence: 99%

“…The multilayering process is not limited to simple linear polyelectrolytes, 2 but instead almost any charged species such as colloidal particles, proteins, DNA, enzymes, and inorganic material can be multilayered with polyelectrolytes to produce multicomposite materials. [3][4][5][6][7][8] One of the many attractive features of multilayer systems is the magnitude to which their properties can be tailored by varying the conditions used to assemble the films (i.e., polymer concentration, polymer functionality, solution pH, and ionic strength). 2,[9][10][11] In particular, films prepared from weak polyelectrolytes can exhibit highly variable properties such as thickness, surface roughness, wettability, swelling behavior, and surface friction because of the influence of pH and ionic strength on the dissociation of the weakly acidic and basic functional groups on the chains.…”

Section: Introductionmentioning

confidence: 99%

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Swelling Behavior of Hyaluronic Acid/Polyallylamine Hydrochloride Multilayer Films

Burke

Barrett

2005

Biomacromolecules

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The reversible swelling behavior of multilayer films containing hyaluronic acid and polyallylamine hydrochloride was investigated using in situ ellipsometry, since many of the natural functions and applied uses of hyaluronic acid are related to the extraordinary ability of this biopolymer to swell, and to respond conformationally to the local solution environment. This swelling was observed to be substantial, and depended strongly on the film thickness, the pH conditions used to prepare the films, and the swelling solution pH and ionic strength. The swelling results were also rationalized in terms of the dissociation behavior of the polyelectrolytes in the multilayer assemblies, measured by the potential, on colloidal particles. The films were found to swell by as much as 8 times their dry thickness, and the extent of film hydration was observed to depend on the thickness of the films in a nonlinear fashion. This was related to the internal structure of the films, which is dictated by the assembly pH conditions. In addition, the swelling solution pH and ionic strength influence the electrostatic environment in the films and, in turn, have a substantial effect on the overall swelling behavior.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Swelling Behavior of Hyaluronic Acid/Polyallylamine Hydrochloride Multilayer Films

Burke

Barrett

2005

Biomacromolecules

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“…Spherical HP has been fabricated via oil-in-water emulsion [15][16][17][18], hydrothermal synthesis [19], and self-assembly techniques [20] using a template soft enough having spherical morphology to minimize interfacial energy. By comparison, nonspherical HP was fabricated using an anisotropically grown or clustered structure as a template.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Hollow Silica Particles Using a Self-Assembled Polyethylene Granule as a Template

Park

Kim

Yoo

et al. 2018

Journal of Nanomaterials

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We developed a novel method preparing nonspherical hollow silica particles (HSP) using a micron-sized granule self-assembled from partially oxidized PE wax. The morphology of the granule was closely investigated in terms of concentration and acid value of PE wax and cooling rate. Due to the oxidized unit in PE wax, magnetic nanoparticle was incorporated into the granule during the self-assembly, and silica was coated on the granule surface via the self-assembly. Silica-coating condition was studied by varying water content and reaction time. After the PE wax was removed by calcination, nonspherical HSP or magnetic HSP was obtained. This cost-effective HSP is expected to be useful for practical applications.

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“…Up to now, there are many methods adopted to prepare core/shell composite microspheres, such as self-assembling method [3,4], dispersion polymerization [5], step wise heterocoagulation methods [6] and precipitation process [7]. Caruso et al deposited silica nanoparticle-polyelectrolyte multilayers on polystyrene (PS) particles by electrostatic self-assembly in alkaline media [3].…”

Section: Introductionmentioning

confidence: 99%

“…Caruso et al deposited silica nanoparticle-polyelectrolyte multilayers on polystyrene (PS) particles by electrostatic self-assembly in alkaline media [3]. Zhu et al reported microstructured silica hollow spheres by PS bead-assisted electrostatic self-assembly at 42 0 C for 3 weeks [4].…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of poly(styrenemethacrylic acid)/MCM-41 core/shell nanocomposite microspheres

Zhao¹,

Ma²,

Liu³

et al. 2009

E-Polymers

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Abstract:In acidic media, poly(styrene-methacrylic acid)/MCM-41 [P(St-MAA)/MCM-41] core/shell microspheres were synthesized using monodisperse P(St-MAA) particles contained in soap-free emulsion and cetyltrimethylammonium bromide as co-templates by adsorption self-assembly method. The effects of P(St-MAA) composition on shell structure of the core/shell microspheres were investigated. The morphology and composition of P(St-MAA)/MCM-41 microspheres were characterized by TEM, XRD and FTIR. The results show that the ordering degree of MCM-41 shells increased as the molar ratio of MAA to St increased. When n(MAA)/n(St) is 0.2, the average diameter and the shell thickness of nanocomposite microspheres are about 170 nm and 20 nm, respectively.

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Electrostatic Self-Assembly of Silica Nanoparticle−Polyelectrolyte Multilayers on Polystyrene Latex Particles

Cited by 484 publications

References 24 publications

Swelling Behavior of Hyaluronic Acid/Polyallylamine Hydrochloride Multilayer Films

Swelling Behavior of Hyaluronic Acid/Polyallylamine Hydrochloride Multilayer Films

Fabrication of Hollow Silica Particles Using a Self-Assembled Polyethylene Granule as a Template

Preparation and characterization of poly(styrenemethacrylic acid)/MCM-41 core/shell nanocomposite microspheres

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