Internal organization and conformational characteristics of star-shaped polystyrene with fullerene C60 as a branching center in deuterotoluene

V. T. Lebedev, G. Török, L. V. Vinogradovac

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

The internal organization of star-shaped polystyrene macromolecules containing fullerene C60 as a branching center is studied via small-angle neutron scattering in deuterotoluene. Analysis of the experimen- tal data according to the Debye-Benoit approximation and the Fourier transformation of the momentum transfer dependences of scattering cross sections for the linear PS precursor and stars is used to determine their molecular masses (9 × 103 and 5 × 104) and gyration radii (∼2.7 and ∼5.5 nm), the gyration radius of the arm (∼3.4 nm), and the average functionality of the star (5.7). The behavior of scattering cross sections for the fullerene-containing polymer on the whole is described by the law of scattering for stars with Gaussian arms (the Benoit model). However, at the local level (within one chain segment), the fullerene center exerts a specific effect on the conformation of arms. As a result, their statistical flexibility decreases and eventually the size of the star increases by ∼30%. This finding conflicts with the Daoud-Cotton theory.

Original languageEnglish
Pages (from-to)537-545
Number of pages9
JournalPolymer Science - Series A
Volume53
Issue number7
DOIs
Publication statusPublished - Jul 2011

Fingerprint

Polystyrenes
Fullerenes
Stars
Scattering
Momentum transfer
Molecular mass
Neutron scattering
Macromolecules
Cotton
Conformations
Polymers
fullerene C60

ASJC Scopus subject areas

  • Polymers and Plastics
  • Materials Chemistry

Cite this

Internal organization and conformational characteristics of star-shaped polystyrene with fullerene C60 as a branching center in deuterotoluene. / Lebedev, V. T.; Török, G.; Vinogradovac, L. V.

In: Polymer Science - Series A, Vol. 53, No. 7, 07.2011, p. 537-545.

Research output: Contribution to journalArticle

@article{653c7fe1b9db4baeab43e9d62ca6b456,
title = "Internal organization and conformational characteristics of star-shaped polystyrene with fullerene C60 as a branching center in deuterotoluene",
abstract = "The internal organization of star-shaped polystyrene macromolecules containing fullerene C60 as a branching center is studied via small-angle neutron scattering in deuterotoluene. Analysis of the experimen- tal data according to the Debye-Benoit approximation and the Fourier transformation of the momentum transfer dependences of scattering cross sections for the linear PS precursor and stars is used to determine their molecular masses (9 × 103 and 5 × 104) and gyration radii (∼2.7 and ∼5.5 nm), the gyration radius of the arm (∼3.4 nm), and the average functionality of the star (5.7). The behavior of scattering cross sections for the fullerene-containing polymer on the whole is described by the law of scattering for stars with Gaussian arms (the Benoit model). However, at the local level (within one chain segment), the fullerene center exerts a specific effect on the conformation of arms. As a result, their statistical flexibility decreases and eventually the size of the star increases by ∼30{\%}. This finding conflicts with the Daoud-Cotton theory.",
author = "Lebedev, {V. T.} and G. T{\"o}r{\"o}k and Vinogradovac, {L. V.}",
year = "2011",
month = "7",
doi = "10.1134/S0965545X11070054",
language = "English",
volume = "53",
pages = "537--545",
journal = "Polymer Science - Series A",
issn = "0965-545X",
publisher = "Maik Nauka-Interperiodica Publishing",
number = "7",

}

TY - JOUR

T1 - Internal organization and conformational characteristics of star-shaped polystyrene with fullerene C60 as a branching center in deuterotoluene

AU - Lebedev, V. T.

AU - Török, G.

AU - Vinogradovac, L. V.

PY - 2011/7

Y1 - 2011/7

N2 - The internal organization of star-shaped polystyrene macromolecules containing fullerene C60 as a branching center is studied via small-angle neutron scattering in deuterotoluene. Analysis of the experimen- tal data according to the Debye-Benoit approximation and the Fourier transformation of the momentum transfer dependences of scattering cross sections for the linear PS precursor and stars is used to determine their molecular masses (9 × 103 and 5 × 104) and gyration radii (∼2.7 and ∼5.5 nm), the gyration radius of the arm (∼3.4 nm), and the average functionality of the star (5.7). The behavior of scattering cross sections for the fullerene-containing polymer on the whole is described by the law of scattering for stars with Gaussian arms (the Benoit model). However, at the local level (within one chain segment), the fullerene center exerts a specific effect on the conformation of arms. As a result, their statistical flexibility decreases and eventually the size of the star increases by ∼30%. This finding conflicts with the Daoud-Cotton theory.

AB - The internal organization of star-shaped polystyrene macromolecules containing fullerene C60 as a branching center is studied via small-angle neutron scattering in deuterotoluene. Analysis of the experimen- tal data according to the Debye-Benoit approximation and the Fourier transformation of the momentum transfer dependences of scattering cross sections for the linear PS precursor and stars is used to determine their molecular masses (9 × 103 and 5 × 104) and gyration radii (∼2.7 and ∼5.5 nm), the gyration radius of the arm (∼3.4 nm), and the average functionality of the star (5.7). The behavior of scattering cross sections for the fullerene-containing polymer on the whole is described by the law of scattering for stars with Gaussian arms (the Benoit model). However, at the local level (within one chain segment), the fullerene center exerts a specific effect on the conformation of arms. As a result, their statistical flexibility decreases and eventually the size of the star increases by ∼30%. This finding conflicts with the Daoud-Cotton theory.

UR - http://www.scopus.com/inward/record.url?scp=80052686262&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=80052686262&partnerID=8YFLogxK

U2 - 10.1134/S0965545X11070054

DO - 10.1134/S0965545X11070054

M3 - Article

AN - SCOPUS:80052686262

VL - 53

SP - 537

EP - 545

JO - Polymer Science - Series A

JF - Polymer Science - Series A

SN - 0965-545X

IS - 7

ER -