Calixarenes as High Temperature Matrices for Thermally Activated Delayed Fluorescence: C(70) in Dihomooxacalix[4]arene

Thermally activated delayed fluorescence (TADF) of (12)C(70) and (13)C(70) was observed up to 140 °C in a p-tert-butyldihomooxacalix[4]arene solid matrix, a temperature range significantly higher than that of previous TADF quantitative studies. An effective singlet–triplet energy gap of 29 kJ/mol an...

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Autores principales: Palmeira, Tiago, Miranda, Alexandre S., Marcos, Paula M., Berberan-Santos, Mário N.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2018
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6017425/
https://www.ncbi.nlm.nih.gov/pubmed/29498664
http://dx.doi.org/10.3390/molecules23030558
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author Palmeira, Tiago
Miranda, Alexandre S.
Marcos, Paula M.
Berberan-Santos, Mário N.
author_facet Palmeira, Tiago
Miranda, Alexandre S.
Marcos, Paula M.
Berberan-Santos, Mário N.
author_sort Palmeira, Tiago
collection PubMed
description Thermally activated delayed fluorescence (TADF) of (12)C(70) and (13)C(70) was observed up to 140 °C in a p-tert-butyldihomooxacalix[4]arene solid matrix, a temperature range significantly higher than that of previous TADF quantitative studies. An effective singlet–triplet energy gap of 29 kJ/mol and triplet formation quantum yields of 0.97 and 0.99 were measured for (12)C(70) and (13)C(70), respectively. The photophysical properties of the two fullerenes in this new matrix are comparable to those obtained in polystyrene at a lower temperature range. Calixarenes are proposed to be suitable matrices for high temperature TADF studies and applications.
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spelling pubmed-60174252018-11-13 Calixarenes as High Temperature Matrices for Thermally Activated Delayed Fluorescence: C(70) in Dihomooxacalix[4]arene Palmeira, Tiago Miranda, Alexandre S. Marcos, Paula M. Berberan-Santos, Mário N. Molecules Article Thermally activated delayed fluorescence (TADF) of (12)C(70) and (13)C(70) was observed up to 140 °C in a p-tert-butyldihomooxacalix[4]arene solid matrix, a temperature range significantly higher than that of previous TADF quantitative studies. An effective singlet–triplet energy gap of 29 kJ/mol and triplet formation quantum yields of 0.97 and 0.99 were measured for (12)C(70) and (13)C(70), respectively. The photophysical properties of the two fullerenes in this new matrix are comparable to those obtained in polystyrene at a lower temperature range. Calixarenes are proposed to be suitable matrices for high temperature TADF studies and applications. MDPI 2018-03-02 /pmc/articles/PMC6017425/ /pubmed/29498664 http://dx.doi.org/10.3390/molecules23030558 Text en © 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Palmeira, Tiago
Miranda, Alexandre S.
Marcos, Paula M.
Berberan-Santos, Mário N.
Calixarenes as High Temperature Matrices for Thermally Activated Delayed Fluorescence: C(70) in Dihomooxacalix[4]arene
title Calixarenes as High Temperature Matrices for Thermally Activated Delayed Fluorescence: C(70) in Dihomooxacalix[4]arene
title_full Calixarenes as High Temperature Matrices for Thermally Activated Delayed Fluorescence: C(70) in Dihomooxacalix[4]arene
title_fullStr Calixarenes as High Temperature Matrices for Thermally Activated Delayed Fluorescence: C(70) in Dihomooxacalix[4]arene
title_full_unstemmed Calixarenes as High Temperature Matrices for Thermally Activated Delayed Fluorescence: C(70) in Dihomooxacalix[4]arene
title_short Calixarenes as High Temperature Matrices for Thermally Activated Delayed Fluorescence: C(70) in Dihomooxacalix[4]arene
title_sort calixarenes as high temperature matrices for thermally activated delayed fluorescence: c(70) in dihomooxacalix[4]arene
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6017425/
https://www.ncbi.nlm.nih.gov/pubmed/29498664
http://dx.doi.org/10.3390/molecules23030558
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