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Proceedings Paper

Kinetics of energy transfer and acceptor dimerization in a bichromophore system
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Paper Abstract

Transient absorption (TA) measurements on nanosecond through microsecond time scales were performed on solutions of tris(2,2'-bipyridine)ruthenium(II) and anthracene in various relative concentrations. Following energy transfer from the ruthenium trisbipyridine sensitizer, the anthracene acceptor undergoes dimerization, which has been shown to occur via triplet-triplet annihilation. Values of the associated rate constants were determined by fitting the experimental TA data to the nonlinear kinetic model implied by the law of mass action. We report values of 6.9 × 108 liter mol−1 s−1 and 7.9 × 109 liter mol−1 s−1, respectively, for the rate constants for energy transfer and for anthracene dimerization.

Paper Details

Date Published: 28 February 2020
PDF: 10 pages
Proc. SPIE 11277, Organic Photonic Materials and Devices XXII, 112770P (28 February 2020); doi: 10.1117/12.2543042
Show Author Affiliations
Timothy M. Pritchett, U.S. Army Combat Capabilities Development Command Army Research Lab. (United States)
Ryan M. O'Donnell, U.S. Army Combat Capabilities Development Command Army Research Lab. (United States)


Published in SPIE Proceedings Vol. 11277:
Organic Photonic Materials and Devices XXII
Christopher E. Tabor; François Kajzar; Toshikuni Kaino, Editor(s)

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