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28 February 2020 Kinetics of energy transfer and acceptor dimerization in a bichromophore system
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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.
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Timothy M. Pritchett and Ryan M. O'Donnell "Kinetics of energy transfer and acceptor dimerization in a bichromophore system", Proc. SPIE 11277, Organic Photonic Materials and Devices XXII, 112770P (28 February 2020); https://doi.org/10.1117/12.2543042
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