Adsorption of end-functionalized polymers on colloidal spheres

Carvalho, Bruce L.; Tong, Penger; Huang, Jinfeng; Witten, Thomas A.; Fetters, Lewis J.

doi:10.1021/ma00069a033

Cited by 33 publications

(48 citation statements)

References 13 publications

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“…It is worthwhile to note that while there is some similarity with end-adsorption of chains on a spherical surface, [23] there are some important differences. Metal ions play an important role in the equilibrium reached for a metallo-micelle-2:1 ligand-metal complexes in the bulk successfully compete with 2:1 ligand-metal complexes on the surface due to their larger translational entropy and the absence of excluded volume surface interactions, while having the same enthalpic gain.…”

Section: Resultsmentioning

confidence: 99%

Monte Carlo Simulations of Metallo‐Supramolecular Micelles

Wang

Dormidontova

2010

Macromol. Rapid Commun.

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Using Monte Carlo simulations we show that the equilibrium properties of metallo-supramolecular micelles are determined by the competition of 2:1 and 1:1 metal-ligand complexation in the bulk and on the surface as well as steric interactions between the neighboring corona blocks attached to the surface. We predict that by increasing the association energy for the second metal-ligand bond, or decreasing the corona block length one can achieve a larger core surface coverage for metallo-supramolecular micelles. Compared to covalently bonded block copolymer micelles, we show that metallo-supramolecular micelles have smaller monomer and end group density, especially in the vicinity of the core, which may lead to experimentally observed aggregation.

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Section: Resultsmentioning

confidence: 99%

Monte Carlo Simulations of Metallo‐Supramolecular Micelles

Wang

Dormidontova

2010

Macromol. Rapid Commun.

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“…In this case colloidal surfaces are maintained at large enough separations because adsorbed polymers resist the ability to approach the other surfaces and as a result protect against arising attraction due to the depletion effect or London-van der Waals force and it leads to stabilization of the colloidal suspension [6,7]. The second case is connected with investigation of a mixture of colloidal particles and nonadsorbing polymers which leads to arising of the so called depletion effect [8] when polymers are expelled from the region between two colloidal particles or between colloidal particle and a wall due to entropic reasons.…”

Section: The European Physical Journal Special Topicsmentioning

confidence: 99%

Linear and ring polymers in confined geometries

Usatenko

Kuterba

Chamati

et al. 2017

Eur. Phys. J. Spec. Top.

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Abstract. A short overview of the theoretical and experimental works on the polymer-colloid mixtures is given. The behaviour of a dilute solution of linear and ring polymers in confined geometries like slit of two parallel walls or in the solution of mesoscopic colloidal particles of big size with different adsorbing or repelling properties in respect to polymers is discussed. Besides, we consider the massive field theory approach in fixed space dimensions d = 3 for the investigation of the interaction between long flexible polymers and mesoscopic colloidal particles of big size and for the calculation of the correspondent depletion interaction potentials and the depletion forces between confining walls. The presented results indicate the interesting and nontrivial behavior of linear and ring polymers in confined geometries and give possibility better to understand the complexity of physical effects arising from confinement and chain topology which plays a significant role in the shaping of individual chromosomes and in the process of their segregation, especially in the case of elongated bacterial cells. The possibility of using linear and ring polymers for production of new types of nano-and micro-electromechanical devices is analyzed.

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“…[6,7] and references therein) the adsorption-desorption dynamics of molecules are of fundamental importance and are crucial to a number of technologies. These include solutions or melts of synthetic macromolecules [8,9], colloidal dispersions [10], and in the manufacture of self-assembled monolayers and multilayers [11,12].…”

Section: Introductionmentioning

confidence: 99%

Enhanced diffusion through surface excursion: A master-equation approach to the narrow-escape-time problem

Rojo

Budde

2011

Phys. Rev. E

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We present a master-equation approach to the narrow-escape-time (NET) problem, i.e., the time needed for a particle contained in a confining domain with a single small or narrow opening to exit the domain. In this paper we introduce an alternative type of confining domain (to the usually spherical one) and we consider the diffusion process on a lattice rather than in continuous space. We have obtained analytic results for the basic quantity studied in the NET problem, the mean first-passage time, and we have studied its dependence in terms of the transition (desorption) probability over (from) the surface boundary and the confining domain dimensions. In addition to our analytical approach, we have implemented Monte Carlo simulations, finding excellent agreement between the theoretical results and simulations.

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Adsorption of end-functionalized polymers on colloidal spheres

Cited by 33 publications

References 13 publications

Monte Carlo Simulations of Metallo‐Supramolecular Micelles

Monte Carlo Simulations of Metallo‐Supramolecular Micelles

Linear and ring polymers in confined geometries

Enhanced diffusion through surface excursion: A master-equation approach to the narrow-escape-time problem

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