Photoinduced Bimolecular Electron Transfer in Ionic Liquids

Cationic Electron Donors

Boning Wu, Min Liang, Nicole Zmich, Jasmine Hatcher, Sharon I. Lall-Ramnarine, James F. Wishart, Mark Maroncelli, Ed Castner

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Recently, we have reported a systematic study of photoinduced electron-transfer reactions in ionic liquid solvents using neutral and anionic electron donors and a series of cyano-substituted anthracene acceptors [ Wu, B.; Maroncelli, M.; Castner, E. W., Jr. Photoinduced Bimolecular Electron Transfer in Ionic Liquids. J. Am. Chem. Soc. 139, 2017, 14568 ]. Herein, we report complementary results for a cationic class of 1-alkyl-4-dimethylaminopyridinium electron donors. Reductive quenching of cyano-substituted anthracene fluorophores by these cationic quenchers is studied in solutions of acetonitrile and the ionic liquid 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide. Varying the length of the alkyl chain permits tuning of the quencher diffusivities in solution. The observed quenching kinetics are interpreted using a diffusion-reaction analysis. Together with results from the prior study, these results show that the intrinsic electron-transfer rate constant does not depend on the quencher charge in this family of reactions.

Original languageEnglish
Pages (from-to)2379-2388
Number of pages10
JournalJournal of Physical Chemistry B
Volume122
Issue number8
DOIs
Publication statusPublished - Mar 1 2018

Fingerprint

Ionic Liquids
Ionic liquids
electron transfer
anthracene
Electrons
liquids
quenching
Anthracene
electrons
imides
Quenching
acetonitrile
diffusivity
tuning
Fluorophores
Acetonitrile
kinetics
Rate constants
Tuning
Kinetics

ASJC Scopus subject areas

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

Cite this

Photoinduced Bimolecular Electron Transfer in Ionic Liquids : Cationic Electron Donors. / Wu, Boning; Liang, Min; Zmich, Nicole; Hatcher, Jasmine; Lall-Ramnarine, Sharon I.; Wishart, James F.; Maroncelli, Mark; Castner, Ed.

In: Journal of Physical Chemistry B, Vol. 122, No. 8, 01.03.2018, p. 2379-2388.

Research output: Contribution to journalArticle

Wu, B, Liang, M, Zmich, N, Hatcher, J, Lall-Ramnarine, SI, Wishart, JF, Maroncelli, M & Castner, E 2018, 'Photoinduced Bimolecular Electron Transfer in Ionic Liquids: Cationic Electron Donors', Journal of Physical Chemistry B, vol. 122, no. 8, pp. 2379-2388. https://doi.org/10.1021/acs.jpcb.7b12542
Wu B, Liang M, Zmich N, Hatcher J, Lall-Ramnarine SI, Wishart JF et al. Photoinduced Bimolecular Electron Transfer in Ionic Liquids: Cationic Electron Donors. Journal of Physical Chemistry B. 2018 Mar 1;122(8):2379-2388. https://doi.org/10.1021/acs.jpcb.7b12542
Wu, Boning ; Liang, Min ; Zmich, Nicole ; Hatcher, Jasmine ; Lall-Ramnarine, Sharon I. ; Wishart, James F. ; Maroncelli, Mark ; Castner, Ed. / Photoinduced Bimolecular Electron Transfer in Ionic Liquids : Cationic Electron Donors. In: Journal of Physical Chemistry B. 2018 ; Vol. 122, No. 8. pp. 2379-2388.
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