Sensitized non-coherent photon upconversion by intramolecular triplet-triplet annihilation in a diphenylanthracene pendant polymer
Andrew J Tilley, Benjamin E Robotham, Ronald P Steer, Kenneth P Ghiggino
CHEMICAL PHYSICS LETTERS | ELSEVIER SCIENCE BV | Published : 2015
Non-coherent photon upconversion by rapid intramolecular triplet-triplet annihilation has been observed following nanosecond laser excitation of Ru(dmb)3 and sequential two-fold triplet energy sensitization of a polymer containing 30 pendant diphenylanthracene groups. A global kinetic analysis of the system has been performed; the intramolecular annihilation step occurs on a sub-nanosecond time scale.
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Awarded by Australian Research Council
The authors are grateful for the continuing financial support of the Australian Research Council (Grants DP 0986166 and LE0989197 to K.P.G.) and the Natural Sciences and Engineering Research Council of Canada (to R.P.S.). We thank Drs. Ming Chen and Evan Moore for provision of the compounds and Ms. Kyra Schwarz for assistance with data analysis.