Ultrafast transient absorption studies of ruthenium and rhenium dipyridophenazine complexes bound to DNA and polynucleotides

C. M. Creely, J. M. Kelly, M. M. Feeney, S. Hudson, J. C. Penedo, W. J. Blau, B. Elias, A. Kirsch-De Mesmaeker, P. Matousek, M. Towrie, A. W. Parker, J. S. Dyer, M. W. George, C. G. Coates, J. J. Mc Garvey

Research output: Journal PublicationConference articlepeer-review

3 Citations (Scopus)

Abstract

We report on ultrafast pump and probe studies of biological systems, in the form of polynucleotide and calf thymus DNA complexes, Molecules for study are bound to the polynucleotides and probed in the visible region to observe changes in the absorption over time. Various dipyridophenazine metal complexes are studied alone and complexed with DNA or synthetic polynucleotides to investigate changes occurring in their excited states upon interacting with nucleobases. Transient absorption measurements are performed pumping at 400nm and probing from 450-700nm with pulse duration of 400fs.

Original languageEnglish
Pages (from-to)92-102
Number of pages11
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume4876
Issue number1
DOIs
Publication statusPublished - 2002
Externally publishedYes
EventOpto-Ireland 2002: Optics and Photonics Technologies and Applications - Galway, Ireland
Duration: 5 Sep 20026 Sep 2002

Keywords

  • DNA complexes
  • Electron transfer
  • Metal complexes
  • Transient absorption
  • Ultrafast

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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