Journal article

Intramolecular Versus Intermolecular Triplet Fusion in Multichromophoric Photochemical Upconversion

Can Gao, Shyamal KK Prasad, Bolong Zhang, Miroslav Dvorak, Murad JY Tayebjee, Dane R McCamey, Timothy W Schmidt, Trevor A Smith, Wallace WH Wong

JOURNAL OF PHYSICAL CHEMISTRY C | AMER CHEMICAL SOC | Published : 2019

Abstract

Photon upconversion is a process that creates high-energy photons under low photon energy excitation. The effect of molecular geometry on the triplet fusion upconversion process has been investigated in this work through the design and synthesis of four new 9,10-diphenylanthracene (DPA) derivatives by employing platinum octaethylporphyrin as the triplet sensitizer. These new emitter molecules containing multiple DPA subunits linked together via a central benzene core exhibit high fluorescence quantum yields. Interestingly, large differences in the triplet fusion upconversion performance were observed between the derivatives with the meta-substituted dimer showing the closest performance to t..

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Grants

Awarded by Australian Research Council through the ARC Centre of Excellence in Exciton Science


Awarded by International Mobility of Researchers project


Funding Acknowledgements

This work was made possible by the support from the Australian Research Council through the ARC Centre of Excellence in Exciton Science (CE170100026). W.W.H.W. and C.G. were further supported by the Australian Renewable Energy Agency which funded the project grants within the Australian Centre for Advanced Photovoltaics (ACAP). M.D. acknowledges the International Mobility of Researchers project no. CZ.02.2.69/0.0/0.0/16_027/0008465.