Revealing the influence of steric bulk on the triplet–triplet annihilation upconversion performance of conjugated polymers-Reference-Cited by-同舟云学术

Revealing the influence of steric bulk on the triplet–triplet annihilation upconversion performance of conjugated polymers

Published:2021-10-01 Issue:1 Volume:11 Page:
ISSN:2045-2322
Container-title:Scientific Reports
language:en
Short-container-title:Sci Rep

Author:

O’shea Riley,Kendrick William J.,Gao Can,Owyong Tze Cin,White Jonathan M.,Ghiggino Kenneth P.,Wong Wallace W. H.

Abstract

AbstractA series of poly(phenylene-vinylene)-based copolymers are synthesized using the Gilch method incorporating monomers with sterically bulky sidechains. The photochemical upconversion performance of these polymers as emitters are investigated using a palladium tetraphenyltetrabenzoporphyrin triplet sensitizer and MEH-PPV as reference. Increased incorporation of sterically bulky monomers leads to a reduction in the upconversion efficiency despite improved photoluminescence quantum yield. A phosphorescence quenching study indicates issues with the energy transfer process between the triplet sensitizer and the copolymers. The best performance with 0.18% upconversion quantum yield is obtained for the copolymer containing 10% monomer with bulky sidechains.

Funder

Australian Research Council

Publisher

Springer Science and Business Media LLC

Subject

Multidisciplinary

Link

https://www.nature.com/articles/s41598-021-99179-y.pdf

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