The performance of conjugated polymers as emitters for triplet-triplet annihilation upconversion
Riley O'Shea, Can Gao, Tze Cin Owyong, Jonathan M White, Wallace WH Wong
MATERIALS ADVANCES | ROYAL SOC CHEMISTRY | Published : 2021
A series of poly(phenylene-ethynylene) copolymers with various aryl spacer units were synthesized for use as emitters in triplet-triplet annihilation upconversion. The upconversion performance of these conjugated polymers was compared to that of well-known poly(phenylene-vinylene) polymers, MEH-PPV and super yellow, in chloroform solution. The copolymer containing anthracene units outperformed both reference polymers recording a maximum upconversion quantum yield of 0.18%.
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Awarded by ARC Centre of Excellence in Exciton Science
This work was supported by the ARC Centre of Excellence in Exciton Science (CE170100026). We thank Prof Kenneth Ghiggino for helpful discussions on photophysical analysis of the upconversion systems.