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

Caitriona M. Creely; John M. Kelly; M. M. Feeney; S. Hudson; J. C. Penedo; Werner J. Blau; B. Elias; Andree Kirsch-De Mesmaeker; P. Matousek; M. Towrie; A. W. Parker; J. S. Dyer; Mikhael W. George; C. G. Coates; John J. McGarvey

doi:10.1117/12.463625

27 August 2003 Ultrafast transient absorption studies of ruthenium and rhenium dipyridophenazine complexes bound to DNA and polynucleotides

Caitriona M. Creely, John M. Kelly, M. M. Feeney, S. Hudson, J. C. Penedo, Werner J. Blau, B. Elias, Andree Kirsch-De Mesmaeker, P. Matousek, M. Towrie, A. W. Parker, J. S. Dyer, Mikhael W. George, C. G. Coates, John J. McGarvey

Author Affiliations +

Proceedings Volume 4876, Opto-Ireland 2002: Optics and Photonics Technologies and Applications; (2003) https://doi.org/10.1117/12.463625
Event: OPTO Ireland, 2002, Galway, Ireland

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.

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Caitriona M. Creely, John M. Kelly, M. M. Feeney, S. Hudson, J. C. Penedo, Werner J. Blau, B. Elias, Andree Kirsch-De Mesmaeker, P. Matousek, M. Towrie, A. W. Parker, J. S. Dyer, Mikhael W. George, C. G. Coates, and John J. McGarvey "Ultrafast transient absorption studies of ruthenium and rhenium dipyridophenazine complexes bound to DNA and polynucleotides", Proc. SPIE 4876, Opto-Ireland 2002: Optics and Photonics Technologies and Applications, (27 August 2003); https://doi.org/10.1117/12.463625

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