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Proceedings Paper

Nonlinear absorption in organometallic materials
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Paper Abstract

We report results of two ongoing investigations that seek to characterize the photophysics of organometallic complexes under one- and two-photon excitation. In the first line of investigation we explore the properties of the triplet state in a complex that contains four individual platinum-acetylide chromophores linked via a tetraphenylmethane unit. Although the individual platinum-acetylide chromophores are not conjugated in the tetramer, transient absorption studies provide clear evidence that triplet-triplet annihilation is very efficient when the complex is excited by sequential two-photon absorption. In a second line of study we have carried out preliminary photophysical studies of an Ir(III) complex that contains a highly conjugated organic ligand that is designed to exhibit a large two-photon absorption cross section. One photon excitation of the Ir(III) complex in the visible region produces a long-lived triplet state that absorbs strongly in the visible and near-infrared regions. Preliminary experiments suggest that the long-lived triplet can be efficiently produced via two-photon absorption in the near-infrared region.

Paper Details

Date Published: 14 September 2006
PDF: 10 pages
Proc. SPIE 6331, Linear and Nonlinear Optics of Organic Materials VI, 63310C (14 September 2006); doi: 10.1117/12.680979
Show Author Affiliations
Kye-Young Kim, Univ. of Florida (United States)
Kirk S. Schanze, Univ. of Florida (United States)


Published in SPIE Proceedings Vol. 6331:
Linear and Nonlinear Optics of Organic Materials VI
Robert A. Norwood, Editor(s)

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