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Intramolecular Triplet–Triplet Annihilation Photon Upconversion in Diffusionally Restricted Anthracene Polymer

[Image: see text] In the strive to develop triplet–triplet annihilation photon upconversion (TTA-UC) to become applicable in a viable technology, there is a need to develop upconversion systems that can function well in solid states. One method to achieve efficient solid-state TTA-UC systems is to r...

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Autores principales: Edhborg, Fredrik, Bildirir, Hakan, Bharmoria, Pankaj, Moth-Poulsen, Kasper, Albinsson, Bo
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2021
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8279549/
https://www.ncbi.nlm.nih.gov/pubmed/34081465
http://dx.doi.org/10.1021/acs.jpcb.1c02856
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author Edhborg, Fredrik
Bildirir, Hakan
Bharmoria, Pankaj
Moth-Poulsen, Kasper
Albinsson, Bo
author_facet Edhborg, Fredrik
Bildirir, Hakan
Bharmoria, Pankaj
Moth-Poulsen, Kasper
Albinsson, Bo
author_sort Edhborg, Fredrik
collection PubMed
description [Image: see text] In the strive to develop triplet–triplet annihilation photon upconversion (TTA-UC) to become applicable in a viable technology, there is a need to develop upconversion systems that can function well in solid states. One method to achieve efficient solid-state TTA-UC systems is to replace the intermolecular energy-transfer steps with the corresponding intramolecular transfers, thereby minimizing loss channels involved in chromophore diffusion. Herein, we present a study of photon upconversion by TTA internally within a polymeric annihilator network (iTTA). By the design of the annihilator polymer and the choice of experiment conditions, we isolate upconversion emission governed by iTTA within the annihilator particles and eliminate possible external TTA between separate annihilator particles (xTTA). This approach leads to mechanistic insights into the process of iTTA and makes it possible to explore the upconversion kinetics and performance of a polymeric annihilator. In comparison to a monomeric upconversion system that only functions using xTTA, we show that upconversion in a polymeric annihilator is efficient also at extremely low annihilator concentrations and that the overall kinetics is significantly faster. The presented results show that intramolecular photon upconversion is a versatile concept for the development of highly efficient solid-state photon upconversion materials.
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spelling pubmed-82795492021-07-15 Intramolecular Triplet–Triplet Annihilation Photon Upconversion in Diffusionally Restricted Anthracene Polymer Edhborg, Fredrik Bildirir, Hakan Bharmoria, Pankaj Moth-Poulsen, Kasper Albinsson, Bo J Phys Chem B [Image: see text] In the strive to develop triplet–triplet annihilation photon upconversion (TTA-UC) to become applicable in a viable technology, there is a need to develop upconversion systems that can function well in solid states. One method to achieve efficient solid-state TTA-UC systems is to replace the intermolecular energy-transfer steps with the corresponding intramolecular transfers, thereby minimizing loss channels involved in chromophore diffusion. Herein, we present a study of photon upconversion by TTA internally within a polymeric annihilator network (iTTA). By the design of the annihilator polymer and the choice of experiment conditions, we isolate upconversion emission governed by iTTA within the annihilator particles and eliminate possible external TTA between separate annihilator particles (xTTA). This approach leads to mechanistic insights into the process of iTTA and makes it possible to explore the upconversion kinetics and performance of a polymeric annihilator. In comparison to a monomeric upconversion system that only functions using xTTA, we show that upconversion in a polymeric annihilator is efficient also at extremely low annihilator concentrations and that the overall kinetics is significantly faster. The presented results show that intramolecular photon upconversion is a versatile concept for the development of highly efficient solid-state photon upconversion materials. American Chemical Society 2021-06-03 2021-06-17 /pmc/articles/PMC8279549/ /pubmed/34081465 http://dx.doi.org/10.1021/acs.jpcb.1c02856 Text en © 2021 The Authors. Published by American Chemical Society Permits the broadest form of re-use including for commercial purposes, provided that author attribution and integrity are maintained (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Edhborg, Fredrik
Bildirir, Hakan
Bharmoria, Pankaj
Moth-Poulsen, Kasper
Albinsson, Bo
Intramolecular Triplet–Triplet Annihilation Photon Upconversion in Diffusionally Restricted Anthracene Polymer
title Intramolecular Triplet–Triplet Annihilation Photon Upconversion in Diffusionally Restricted Anthracene Polymer
title_full Intramolecular Triplet–Triplet Annihilation Photon Upconversion in Diffusionally Restricted Anthracene Polymer
title_fullStr Intramolecular Triplet–Triplet Annihilation Photon Upconversion in Diffusionally Restricted Anthracene Polymer
title_full_unstemmed Intramolecular Triplet–Triplet Annihilation Photon Upconversion in Diffusionally Restricted Anthracene Polymer
title_short Intramolecular Triplet–Triplet Annihilation Photon Upconversion in Diffusionally Restricted Anthracene Polymer
title_sort intramolecular triplet–triplet annihilation photon upconversion in diffusionally restricted anthracene polymer
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8279549/
https://www.ncbi.nlm.nih.gov/pubmed/34081465
http://dx.doi.org/10.1021/acs.jpcb.1c02856
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