Comblike macromolecules

Potemkin, Igor I.; Palyulin, Vladimir V.

doi:10.1134/s0965545x09020011

Cited by 56 publications

(59 citation statements)

References 122 publications

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“…Fu rthermore, this problem is not improved when one considers an average of l p (k) along the chain [5,16], while no divergence occurs for l p (1) [16]. However, the use of l p (1) is inconvenient in simu lations due to the limited statistical accuracy.…”

Section: Resultsmentioning

confidence: 99%

“…Macromo lecules which consist of a backbone where side chains are graftedrandomly or regularly have recently found much interest [1][2][3][4][5][6]. Such macro mo lecules are described in terms of their structure by a multitudeof parameters, such as the backbone length N b and the grafting densitythat the side chains with length N are grafted ontothe flexible backbone, while solvent conditions may also varyby variation of the temperature T or the pH of the solution resulting inthe structural change of these stimuli-responsive macro molecules.The response of the large scale structure of bottle-brush polymers tosolvent conditions is an intriguing Biopolymers with a related arch itecture are also abundant in nature;fo r examp le proteoglycans [8] o r the agg recan mo lecules kept responsible for the very good lubricating properties in human joints [9].…”

Section: Introductionmentioning

confidence: 99%

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Molecular Dynamics Simulations of Bottle-Brush Polymers with a Flexible Backbone under Theta and Good Solvent Conditions

Theodorakis¹,

Fytas²

2012

AJCMP

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Even at temperatures T close to the theta point the side chains are significantly stretched, as it has been confirmed for bottle brushes with a rigid backbone, their linear dimension depending on the solvent quality only weakly. Ho wever, the distribution of monomers shows a more pronounced dependence, which we characterize through the asphericity and acylindricity as functions of σ, T, N b , and N. In part icular, increase of σ, T, N b , and N increases the normalized asphericity and acylindricity of the macro molecule. Interestingly, we also find that the dimensions of the side chains reveals differences in the distributions of side chain monomers by changing the backbone length N b as the region between the two backbone-ends increases. A method to ext ract the persistence length of bottle-brush macromo lecules and its drawbacks is also discussed given that different measures of the persistence length are not mutually consistent with each other and depend distinctly both on N b and the solvent quality.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Molecular Dynamics Simulations of Bottle-Brush Polymers with a Flexible Backbone under Theta and Good Solvent Conditions

Theodorakis¹,

Fytas²

2012

AJCMP

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“…This concept was confirmed by computer simulation methods. [311,312] Some other models on how to achieve autonomous propulsion using responsive polymers systems are reviewed in ref. [313] Our comb-like p(BPEM-g-nBuA) macromolecules shifted as a whole after many successive cycles of vapourstimulated conformational transitions.…”

Section: First Steps Towards Molecular Walkermentioning

confidence: 99%

Scanning Force Microscopy as Applied to Conformational Studies in Macromolecular Research

Gallyamov

2011

Macromol. Rapid Commun.

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The modern state of SFM research on polymer nano-objects including single chains is discussed in comparison with other similar high-resolution microscopy techniques. The range of problems to be solved preferentially by SFM is highlighted. Promising methodology to describe quantitatively the morphology of macromolecular objects is proposed. The main benefits of this algorithm seem to be the apparent mathematical correctness as well as the possibility to estimate errors and the confidence of the numbers obtained. Special attention is paid to the dynamic observations of conformational transitions on a substrate in real time regime. This approach allows one to realise direct control of the adsorbed macromolecules by means of exposure to different vapours. Driving forces of the vapour-induced reorganisation are discussed.

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“…The behavior of branched polymer systems in solution is largely determined by the parameters of the initial architecture of macromolecules, such as the number of branches, the distance between them, their length, the chemical nature of components of the complex macromolecule governing the flexibility of macrochains, their response to various external effects (solvent quality, temperature, etc.) [1]. For branched polyelectrolytes the number of variable parameters increases substantially.…”

Section: Introductionmentioning

confidence: 99%

Features of the intramolecular structure of branched polymer systems in solution

2014

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The review is devoted to the synthesis and properties of branched polymer structures of a controlled molecular architecture. The work considers the main methods to obtain branched macromolecules. The results of both theoretical calculations and experimental studies of the structure and features of the behavior of the mentioned systems in solution are analyzed and generalized. The promising use of branched polymer systems as an alternative to linear systems is noted.

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Comblike macromolecules

Cited by 56 publications

References 122 publications

Molecular Dynamics Simulations of Bottle-Brush Polymers with a Flexible Backbone under Theta and Good Solvent Conditions

Molecular Dynamics Simulations of Bottle-Brush Polymers with a Flexible Backbone under Theta and Good Solvent Conditions

Scanning Force Microscopy as Applied to Conformational Studies in Macromolecular Research

Features of the intramolecular structure of branched polymer systems in solution

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