Ultrafast dynamics of polybutadiene probed by optically heterodyne-detected optical-Kerr-effect spectroscopy

N T Hunt, S R Meech

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

The ultrafast dynamics of polybutadiene have been studied using ultrafast optical-Kerr-effect spectroscopy. The data are compared with measurements on 1,3- and 1,4-pentadiene. The two diene derivatives have quite distinct subpicosecond dynamics, with an important contribution from an intramolecular torsional mode in the 1,4-derivative. The main part of the polymer spectral density can be assigned, by analogy with the data for 1,4-pentadiene, to intramolecular torsional motion about carbon-carbon single bonds. The picosecond diffusive orientational relaxation times of the dienes are not well described by simple hydrodynamics.

LanguageEnglish
Pages368-373
Number of pages6
JournalChemical Physics Letters
Volume400
Issue number4-6
DOIs
Publication statusPublished - 21 Dec 2004

Fingerprint

Alkadienes
Optical Kerr effect
polybutadiene
dienes
Kerr effects
Carbon
Spectroscopy
Derivatives
Spectral density
carbon
Relaxation time
spectroscopy
Polymers
Hydrodynamics
relaxation time
hydrodynamics
polymers

Keywords

  • intermolecular dynamics
  • raman spectroscopy
  • isotropic phase
  • liquid crystals
  • glasses
  • microemulsions
  • modes

Cite this

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abstract = "The ultrafast dynamics of polybutadiene have been studied using ultrafast optical-Kerr-effect spectroscopy. The data are compared with measurements on 1,3- and 1,4-pentadiene. The two diene derivatives have quite distinct subpicosecond dynamics, with an important contribution from an intramolecular torsional mode in the 1,4-derivative. The main part of the polymer spectral density can be assigned, by analogy with the data for 1,4-pentadiene, to intramolecular torsional motion about carbon-carbon single bonds. The picosecond diffusive orientational relaxation times of the dienes are not well described by simple hydrodynamics.",
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Ultrafast dynamics of polybutadiene probed by optically heterodyne-detected optical-Kerr-effect spectroscopy. / Hunt, N T ; Meech, S R .

In: Chemical Physics Letters, Vol. 400, No. 4-6, 21.12.2004, p. 368-373.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Ultrafast dynamics of polybutadiene probed by optically heterodyne-detected optical-Kerr-effect spectroscopy

AU - Hunt, N T

AU - Meech, S R

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N2 - The ultrafast dynamics of polybutadiene have been studied using ultrafast optical-Kerr-effect spectroscopy. The data are compared with measurements on 1,3- and 1,4-pentadiene. The two diene derivatives have quite distinct subpicosecond dynamics, with an important contribution from an intramolecular torsional mode in the 1,4-derivative. The main part of the polymer spectral density can be assigned, by analogy with the data for 1,4-pentadiene, to intramolecular torsional motion about carbon-carbon single bonds. The picosecond diffusive orientational relaxation times of the dienes are not well described by simple hydrodynamics.

AB - The ultrafast dynamics of polybutadiene have been studied using ultrafast optical-Kerr-effect spectroscopy. The data are compared with measurements on 1,3- and 1,4-pentadiene. The two diene derivatives have quite distinct subpicosecond dynamics, with an important contribution from an intramolecular torsional mode in the 1,4-derivative. The main part of the polymer spectral density can be assigned, by analogy with the data for 1,4-pentadiene, to intramolecular torsional motion about carbon-carbon single bonds. The picosecond diffusive orientational relaxation times of the dienes are not well described by simple hydrodynamics.

KW - intermolecular dynamics

KW - raman spectroscopy

KW - isotropic phase

KW - liquid crystals

KW - glasses

KW - microemulsions

KW - modes

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