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

Abstract A 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 tr...

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Autores principales:	Riley O’shea, William J. Kendrick, Can Gao, Tze Cin Owyong, Jonathan M. White, Kenneth P. Ghiggino, Wallace W. H. Wong
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/aca75498d91b42da9837cda60c0b5352
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spelling	oai:doaj.org-article:aca75498d91b42da9837cda60c0b53522021-12-02T17:37:40ZRevealing the influence of steric bulk on the triplet–triplet annihilation upconversion performance of conjugated polymers10.1038/s41598-021-99179-y2045-2322https://doaj.org/article/aca75498d91b42da9837cda60c0b53522021-10-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-99179-yhttps://doaj.org/toc/2045-2322Abstract A 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.Riley O’sheaWilliam J. KendrickCan GaoTze Cin OwyongJonathan M. WhiteKenneth P. GhigginoWallace W. H. WongNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Riley O’shea William J. Kendrick Can Gao Tze Cin Owyong Jonathan M. White Kenneth P. Ghiggino Wallace W. H. Wong Revealing the influence of steric bulk on the triplet–triplet annihilation upconversion performance of conjugated polymers
description	Abstract A 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.
format	article
author	Riley O’shea William J. Kendrick Can Gao Tze Cin Owyong Jonathan M. White Kenneth P. Ghiggino Wallace W. H. Wong
author_facet	Riley O’shea William J. Kendrick Can Gao Tze Cin Owyong Jonathan M. White Kenneth P. Ghiggino Wallace W. H. Wong
author_sort	Riley O’shea
title	Revealing the influence of steric bulk on the triplet–triplet annihilation upconversion performance of conjugated polymers
title_short	Revealing the influence of steric bulk on the triplet–triplet annihilation upconversion performance of conjugated polymers
title_full	Revealing the influence of steric bulk on the triplet–triplet annihilation upconversion performance of conjugated polymers
title_fullStr	Revealing the influence of steric bulk on the triplet–triplet annihilation upconversion performance of conjugated polymers
title_full_unstemmed	Revealing the influence of steric bulk on the triplet–triplet annihilation upconversion performance of conjugated polymers
title_sort	revealing the influence of steric bulk on the triplet–triplet annihilation upconversion performance of conjugated polymers
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/aca75498d91b42da9837cda60c0b5352
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Revealing the influence of steric bulk on the triplet–triplet annihilation upconversion performance of conjugated polymers

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