Excited-State Dynamics of a Two-Photon-Activatable Ruthenium Prodrug

Simon E. Greenough, Michael D. Horbury, Nichola A. Smith, Peter J. Sadler, Martin J Paterson, Vasilios G Stavros

Research output: Contribution to journalArticle

3 Citations (Scopus)
57 Downloads (Pure)

Abstract

We present a new approach to investigate how the photodynamics of an octahedral ruthenium(II) complex activated through two-photon absorption (TPA) differ from the equivalent complex activated through one-photon absorption (OPA). We photoactivated a RuII polypyridyl complex containing bioactive monodentate ligands in the photodynamic therapy window (620-1000nm) by using TPA and used transient UV/Vis absorption spectroscopy to elucidate its reaction pathways. Density functional calculations allowed us to identify the nature of the initially populated states and kinetic analysis recovers a photoactivation lifetime of approximately 100ps. The dynamics displayed following TPA or OPA are identical, showing that TPA prodrug design may use knowledge gathered from the more numerous and easily conducted OPA studies.

Original languageEnglish
Pages (from-to)221-224
Number of pages4
JournalChemPhysChem
Volume17
Issue number2
DOIs
Publication statusPublished - 18 Jan 2016

Keywords

  • Density functional calculations
  • Ligand substitution
  • Ruthenium
  • Time-resolved spectroscopy
  • Two-photon absorption

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Atomic and Molecular Physics, and Optics

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