Electron-Transfer Dynamics for a Donor-Bridge-Acceptor Complex in Ionic Liquids

Jessalyn A. DeVine, Marena Labib, Megan E. Harries, Rouba Abdel Malak Rached, Joseph Issa, James F. Wishart, Ed Castner

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Intramolecular photoinduced electron transfer from an N,N-dimethyl-p-phenylenediamine donor bridged by a diproline spacer to a coumarin 343 acceptor was studied using time-resolved fluorescence measurements in three ionic liquids and in acetonitrile. The three ionic liquids have the bis[(trifluoromethyl)sulfonyl]amide anion paired with the tributylmethylammonium, 1-butyl-1-methylpyrrolidinium, and 1-decyl-1-methylpyrrolidinium cations. The dynamics in the two-proline donor-bridge-acceptor complex are compared to those observed for the same donor and acceptor connected by a single proline bridge, studied previously by Lee et al. (J. Phys. Chem. C 2012, 116, 5197). The increased conformational freedom afforded by the second bridging proline resulted in multiple energetically accessible conformations. The multiple conformations have significant variations in donor-acceptor electronic coupling, leading to dynamics that include both adiabatic and nonadiabatic contributions. In common with the single-proline bridged complex, the intramolecular electron transfer in the two-proline system was found to be in the Marcus inverted regime. (Chemical Equation Presented).

Original languageEnglish
Pages (from-to)11336-11345
Number of pages10
JournalJournal of Physical Chemistry B
Volume119
Issue number34
DOIs
Publication statusPublished - Aug 27 2015

Fingerprint

Ionic Liquids
Ionic liquids
Proline
Conformations
electron transfer
Electrons
liquids
Acetonitrile
Amides
spacers
amides
acetonitrile
Negative ions
Positive ions
Fluorescence
anions
cations
fluorescence
electronics
Anions

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Materials Chemistry
  • Surfaces, Coatings and Films

Cite this

DeVine, J. A., Labib, M., Harries, M. E., Rached, R. A. M., Issa, J., Wishart, J. F., & Castner, E. (2015). Electron-Transfer Dynamics for a Donor-Bridge-Acceptor Complex in Ionic Liquids. Journal of Physical Chemistry B, 119(34), 11336-11345. https://doi.org/10.1021/acs.jpcb.5b03320

Electron-Transfer Dynamics for a Donor-Bridge-Acceptor Complex in Ionic Liquids. / DeVine, Jessalyn A.; Labib, Marena; Harries, Megan E.; Rached, Rouba Abdel Malak; Issa, Joseph; Wishart, James F.; Castner, Ed.

In: Journal of Physical Chemistry B, Vol. 119, No. 34, 27.08.2015, p. 11336-11345.

Research output: Contribution to journalArticle

DeVine, JA, Labib, M, Harries, ME, Rached, RAM, Issa, J, Wishart, JF & Castner, E 2015, 'Electron-Transfer Dynamics for a Donor-Bridge-Acceptor Complex in Ionic Liquids', Journal of Physical Chemistry B, vol. 119, no. 34, pp. 11336-11345. https://doi.org/10.1021/acs.jpcb.5b03320
DeVine JA, Labib M, Harries ME, Rached RAM, Issa J, Wishart JF et al. Electron-Transfer Dynamics for a Donor-Bridge-Acceptor Complex in Ionic Liquids. Journal of Physical Chemistry B. 2015 Aug 27;119(34):11336-11345. https://doi.org/10.1021/acs.jpcb.5b03320
DeVine, Jessalyn A. ; Labib, Marena ; Harries, Megan E. ; Rached, Rouba Abdel Malak ; Issa, Joseph ; Wishart, James F. ; Castner, Ed. / Electron-Transfer Dynamics for a Donor-Bridge-Acceptor Complex in Ionic Liquids. In: Journal of Physical Chemistry B. 2015 ; Vol. 119, No. 34. pp. 11336-11345.
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