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Proceedings Paper

Picosecond transient absorption studies of dipyridophenazine
Author(s): Caitriona Creely; John Kelly; A. M. Selmi; D. A. McGovern; Werner J. Blau; P. Matousek; M. Towrie; A. W. Parker
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Paper Abstract

We report on ultrafast (200fs pulse durations) pump (267nm) and probe (430-700nm) studies of dipyrido -[3,2-a:2’,3’-c] phenazine (dppz) derivatives.These compounds are of interest as their metal polypyridyl complexes are used as photophysical probes for duplex DNA, where the dppz ligand can intercalate between the base pairs. Dppz, Me2dppz and F2dppz were studied to investigate changes occurring in their excited states over 1ns. In each case a transient decay and formation of a new species are seen in the 10 ®100ps region. The nature of these transients is discussed.

Paper Details

Date Published: 14 July 2003
PDF: 8 pages
Proc. SPIE 4991, Organic Photonic Materials and Devices V, (14 July 2003); doi: 10.1117/12.475457
Show Author Affiliations
Caitriona Creely, Trinity College Dublin (Ireland)
John Kelly, Trinity College Dublin (Ireland)
A. M. Selmi, Trinity College Dublin (Ireland)
D. A. McGovern, Trinity College Dublin (Ireland)
Werner J. Blau, Trinity College Dublin (Ireland)
P. Matousek, Rutherford Appleton Lab. (United Kingdom)
M. Towrie, Rutherford Appleton Lab. (United Kingdom)
A. W. Parker, Rutherford Appleton Lab. (United Kingdom)

Published in SPIE Proceedings Vol. 4991:
Organic Photonic Materials and Devices V
James G. Grote; Toshikuni Kaino, Editor(s)

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