Synthesis and conformation properties of alkylene-aromatic poly(ether esters) with nonlinear hetaryl-containing mesogenic fragments in the backbone

Bushin, S. V.; Андреева, Л. Н.; Strelina, I. A.; Rudaya, L. I.; Chernienko, A. V.; Рамш, С. М.; Шаманин, В. В.

doi:10.1134/s1070427211050168

Cited by 2 publications

(2 citation statements)

References 11 publications

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“…The Kuhn segment length ( A D ) calculated from diffusion coefficients was 6.7 nm. Hydrodynamic diameter of a chain d (0.9 nm) was calculated according to eq Equilibrium rigidity was also evaluated using the dependence between P3HT intrinsic viscosity and its molecular mass with the aid of the following relationship:

\begin{matrix} \frac{A_{0}}{k} \frac{M^{2 / 3}}{{[η]}^{1 / 3}} = P_{\infty}^{- 1} {((\frac{true}{M_{0}}) / A)}^{1 / 2} M^{1 / 2} + \\ + true(true(\frac{M_{0}}{λ} true) / 3 π true) [\ln (A / d) - 1, 056] \end{matrix}

…”

Section: Resultsmentioning

confidence: 99%

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

Yakimansky

Bushin

Безрукова

et al. 2016

J. Polym. Sci. Part B: Polym. Phys.

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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 k 5 0.37 nm was determined experimentally. The following parameters of poly(3-hexylthiophene) were characterized and quantified: equilibrium rigidity (Kuhn segment length) ff 5 6.7 nm and hydrodynamic diameter of a polymer chain d 5 0.6 nm.

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\begin{matrix} \frac{A_{0}}{k} \frac{M^{2 / 3}}{{[η]}^{1 / 3}} = P_{\infty}^{- 1} {((\frac{true}{M_{0}}) / A)}^{1 / 2} M^{1 / 2} + \\ + true(true(\frac{M_{0}}{λ} true) / 3 π true) [\ln (A / d) - 1, 056] \end{matrix}

…”

Section: Resultsmentioning

confidence: 99%

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

Yakimansky

Bushin

Безрукова

et al. 2016

J. Polym. Sci. Part B: Polym. Phys.

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“…Полимеры изогнутой структуры с азометиновыми фрагментами в боковой цепиСинтез бананообразных полиоснований Шиффа, в которых азометиновый фрагмент находится в боковой цепи, практически не описан. Одним из примеров является производное бензоксазола (53), которое сочетает в себе свойства жидких кристаллов с возможностью использования в нелинейной оптике[218].Полиуретан Y-образной структуры (53) также можно считать примером изогнутых азометинов с иминным фрагментом в боковой цепи. К тому же, полимер демонстрирует не только способность к ге-нерации второй гармоники, но и высокую термическую стабильность ГВГ за счет стабилизации дипольного выравнивания хромофорами[219].…”

unclassified

,Polyazomethines. Synthesis, properties and applications (review)

Ovdenko¹,

Syromyatnikov²,

Kolendo³

2017

polymmattech

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Synthesis and conformation properties of alkylene-aromatic poly(ether esters) with nonlinear hetaryl-containing mesogenic fragments in the backbone

Cited by 2 publications

References 11 publications

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

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

,Polyazomethines. Synthesis, properties and applications (review)

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