Hydrodynamic properties and conformation of poly(3‐hexylthiophene) in dilute solutions

Conducting polymers demonstrate low solubility in organic solvents. Introducing aliphatic substituents into polymer chains improves their solubility, but may also lead to changes in conformational characteristics of macromolecules. In the present work, the studies of hydrodynamic properties and conf...

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Bibliographic Details
Published in:	Journal of polymer science. Part B, Polymer physics Vol. 54; no. 9; pp. 875 - 883
Main Authors:	Yakimansky, Alexander V., Bushin, Stanislav V., Bezrukova, Marina A., Lezov, Alexey A., Gubarev, Alexander S., Lebedeva, Elena V., Akhmadeeva, Lilija I., Podseval'nikova, Anna N., Tsvetkov, Nikolaj V., Koeckelberghs, Guy, Persoons, Andre
Format:	Journal Article
Language:	English
Published:	Hoboken Wiley 01-05-2016 Blackwell Publishing Ltd Wiley Subscription Services, Inc
Subjects:	Aliphatic compounds Chains (polymeric) Computational fluid dynamics conformational analysis conjugated polymers Dilution dynamic light scattering Fluid flow hydrodynamic properties Hydrodynamics Macromolecules Mathematical models poly-(3-hexylthiophene) velocity sedimentation
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Summary:	Conducting polymers demonstrate low solubility in organic solvents. Introducing aliphatic substituents into polymer chains improves their solubility, but may also lead to changes in conformational characteristics of macromolecules. In the present work, the studies of hydrodynamic properties and conformational characteristics of comb‐shaped poly(3‐hexylthiophene) with aliphatic side substituents were carried out in chloroform solutions. Conformational analysis of the studied macromolecules was performed for the first time using homologous series with a wide range of molecular weights of the polymers in dilute solutions. The hydrodynamic properties of these macromolecules were interpreted using the worm‐like spherocylinder model and the straight spherocylinder model. The projection of the monomer unit in the direction of the main polymer chain λ = 0.37 nm was determined experimentally. The following parameters of poly(3‐hexylthiophene) were characterized and quantified: equilibrium rigidity (Kuhn segment length) А = 6.7 nm and hydrodynamic diameter of a polymer chain d = 0.6 nm. © 2016 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2016, 54, 875–883
Bibliography:	http://dx.doi.org/10.1002/polb.23986 Russian Foundation for Basic Research - No. 14-03-31856 mol_а istex:2B585FFCE1B9BFA096253BF068218F9D0CEA9F79 St.-Petersburg State University research grant - No. 11.38.267.2014 Russian Science Foundation - No. project no. 15-12-00034 ark:/67375/WNG-T2L5J391-N ArticleID:POLB23986 ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	0887-6266 1099-0488
DOI:	10.1002/polb.23986