Solvent dependent photophysics of fac-[Re(CO)3(11,12-X 2dppz)(py)]+ (X = H, F or Me)

Joanne Dyer, Caitriona M. Creely, J. Carlos Penedo, David C. Grills, Sarah Hudson, Pavel Matousek, Anthony W. Parker, Michael Towrie, John M. Kelly, Michael W. George

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

The photophysical properties of [Re(CO)3(dppz)(py)]+ (dppz = dipyrido-[3,2-a:2′,3′-c] phenazine) (1) and its 11,12 substituted derivatives [Re(CO)3(dppzMe2)(py)]+ (2) and [Re(CO)3(dppzF2)(py)]+ (3) have been examined in organic and aqueous environments using phosphorescence and picosecond transient visible and infrared absorption spectroscopic methods. The roles of the intraligand IL(π-π*) and metal-to-ligand charge transfer MLCT(phz) excited states are evaluated and used to explain the major effect of difluoro-substitution, which is particularly remarkable in water, where the excited state of [Re(CO)3(dppzF2)(py)] + (3) is strongly quenched.

Original languageEnglish
Pages (from-to)741-748
Number of pages8
JournalPhotochemical and Photobiological Sciences
Volume6
Issue number7
DOIs
Publication statusPublished - Jan 1 2007

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

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    Dyer, J., Creely, C. M., Penedo, J. C., Grills, D. C., Hudson, S., Matousek, P., Parker, A. W., Towrie, M., Kelly, J. M., & George, M. W. (2007). Solvent dependent photophysics of fac-[Re(CO)3(11,12-X 2dppz)(py)]+ (X = H, F or Me). Photochemical and Photobiological Sciences, 6(7), 741-748. https://doi.org/10.1039/b618651c