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Time-resolved EPR investigation of potential model systems for acrylate polymer main chain radicals based on esters of Kemp's tri-acid

Publication ,  Journal Article
Lebedeva, NV; Gorelik, EV; Magnus-Aryitey, D; Hill, TE; Forbes, MDE
Published in: Journal of Physical Chemistry B
May 14, 2009

Methyl esters of Kemp's tri-acid and cyclohexanetricarboxylic acid are structurally similar to acrylate polymers, having the same functionalities and stereoregularities as poly(methylmethacrylate) and poly(methylacrylate), respectively. The photochemistry and free radicals from these model systems have been studied using time-resolved electron paramagnetic resonance spectroscopy with laser flash photolysis at 248 nm. Chemically induced electron spin polarization from the triplet mechanism (net emission) is observed. Well-resolved spectra are obtained at all temperatures for the model system radicals, which are determined to be in the slow motion condition, that is, there is no interconversion of chair conformations. The temperature dependence of the spectra is minimal; some hyperfine lines shift as the temperature increases, but without much broadening. Density functional theory calculations are presented and discussed in support of the experimental data. © Copyright 2009 by the American Chemical Society.

Duke Scholars

Published In

Journal of Physical Chemistry B

DOI

ISSN

1520-6106

Publication Date

May 14, 2009

Volume

113

Issue

19

Start / End Page

6623 / 6629

Related Subject Headings

  • 51 Physical sciences
  • 40 Engineering
  • 34 Chemical sciences
  • 09 Engineering
  • 03 Chemical Sciences
  • 02 Physical Sciences
 

Citation

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Lebedeva, N. V., Gorelik, E. V., Magnus-Aryitey, D., Hill, T. E., & Forbes, M. D. E. (2009). Time-resolved EPR investigation of potential model systems for acrylate polymer main chain radicals based on esters of Kemp's tri-acid. Journal of Physical Chemistry B, 113(19), 6623–6629. https://doi.org/10.1021/jp809610t
Lebedeva, N. V., E. V. Gorelik, D. Magnus-Aryitey, T. E. Hill, and M. D. E. Forbes. “Time-resolved EPR investigation of potential model systems for acrylate polymer main chain radicals based on esters of Kemp's tri-acid.” Journal of Physical Chemistry B 113, no. 19 (May 14, 2009): 6623–29. https://doi.org/10.1021/jp809610t.
Lebedeva NV, Gorelik EV, Magnus-Aryitey D, Hill TE, Forbes MDE. Time-resolved EPR investigation of potential model systems for acrylate polymer main chain radicals based on esters of Kemp's tri-acid. Journal of Physical Chemistry B. 2009 May 14;113(19):6623–9.
Lebedeva, N. V., et al. “Time-resolved EPR investigation of potential model systems for acrylate polymer main chain radicals based on esters of Kemp's tri-acid.” Journal of Physical Chemistry B, vol. 113, no. 19, May 2009, pp. 6623–29. Scopus, doi:10.1021/jp809610t.
Lebedeva NV, Gorelik EV, Magnus-Aryitey D, Hill TE, Forbes MDE. Time-resolved EPR investigation of potential model systems for acrylate polymer main chain radicals based on esters of Kemp's tri-acid. Journal of Physical Chemistry B. 2009 May 14;113(19):6623–6629.
Journal cover image

Published In

Journal of Physical Chemistry B

DOI

ISSN

1520-6106

Publication Date

May 14, 2009

Volume

113

Issue

19

Start / End Page

6623 / 6629

Related Subject Headings

  • 51 Physical sciences
  • 40 Engineering
  • 34 Chemical sciences
  • 09 Engineering
  • 03 Chemical Sciences
  • 02 Physical Sciences