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Mononuclear Copper(I) 3-(2-pyridyl)pyrazole Complexes: The Crucial Role of Phosphine on Photoluminescence

A series of emissive Cu(I) cationic complexes with 3-(2-pyridyl)-5-phenyl-pyrazole and various phosphines: dppbz (1), Xantphos (2), DPEPhos (3), PPh(3) (4), and BINAP (5) were designed and characterized. Complexes obtained exhibit bright yellow-green emission (ca. 520–650 nm) in the solid state with...

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Autores principales: Baranova, Kristina F., Titov, Aleksei A., Smol’yakov, Alexander F., Chernyadyev, Andrey Yu., Filippov, Oleg A., Shubina, Elena S.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8620892/
https://www.ncbi.nlm.nih.gov/pubmed/34833961
http://dx.doi.org/10.3390/molecules26226869
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author Baranova, Kristina F.
Titov, Aleksei A.
Smol’yakov, Alexander F.
Chernyadyev, Andrey Yu.
Filippov, Oleg A.
Shubina, Elena S.
author_facet Baranova, Kristina F.
Titov, Aleksei A.
Smol’yakov, Alexander F.
Chernyadyev, Andrey Yu.
Filippov, Oleg A.
Shubina, Elena S.
author_sort Baranova, Kristina F.
collection PubMed
description A series of emissive Cu(I) cationic complexes with 3-(2-pyridyl)-5-phenyl-pyrazole and various phosphines: dppbz (1), Xantphos (2), DPEPhos (3), PPh(3) (4), and BINAP (5) were designed and characterized. Complexes obtained exhibit bright yellow-green emission (ca. 520–650 nm) in the solid state with a wide range of QYs (1–78%) and lifetimes (19–119 µs) at 298 K. The photoluminescence efficiency dramatically depends on the phosphine ligand type. The theoretical calculations of buried volumes and excited states explained the emission behavior for 1–5 as well as their lifetimes. The bulky and rigid phosphines promote emission efficiency through the stabilization of singlet and triplet excited states.
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spelling pubmed-86208922021-11-27 Mononuclear Copper(I) 3-(2-pyridyl)pyrazole Complexes: The Crucial Role of Phosphine on Photoluminescence Baranova, Kristina F. Titov, Aleksei A. Smol’yakov, Alexander F. Chernyadyev, Andrey Yu. Filippov, Oleg A. Shubina, Elena S. Molecules Article A series of emissive Cu(I) cationic complexes with 3-(2-pyridyl)-5-phenyl-pyrazole and various phosphines: dppbz (1), Xantphos (2), DPEPhos (3), PPh(3) (4), and BINAP (5) were designed and characterized. Complexes obtained exhibit bright yellow-green emission (ca. 520–650 nm) in the solid state with a wide range of QYs (1–78%) and lifetimes (19–119 µs) at 298 K. The photoluminescence efficiency dramatically depends on the phosphine ligand type. The theoretical calculations of buried volumes and excited states explained the emission behavior for 1–5 as well as their lifetimes. The bulky and rigid phosphines promote emission efficiency through the stabilization of singlet and triplet excited states. MDPI 2021-11-14 /pmc/articles/PMC8620892/ /pubmed/34833961 http://dx.doi.org/10.3390/molecules26226869 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/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 (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Baranova, Kristina F.
Titov, Aleksei A.
Smol’yakov, Alexander F.
Chernyadyev, Andrey Yu.
Filippov, Oleg A.
Shubina, Elena S.
Mononuclear Copper(I) 3-(2-pyridyl)pyrazole Complexes: The Crucial Role of Phosphine on Photoluminescence
title Mononuclear Copper(I) 3-(2-pyridyl)pyrazole Complexes: The Crucial Role of Phosphine on Photoluminescence
title_full Mononuclear Copper(I) 3-(2-pyridyl)pyrazole Complexes: The Crucial Role of Phosphine on Photoluminescence
title_fullStr Mononuclear Copper(I) 3-(2-pyridyl)pyrazole Complexes: The Crucial Role of Phosphine on Photoluminescence
title_full_unstemmed Mononuclear Copper(I) 3-(2-pyridyl)pyrazole Complexes: The Crucial Role of Phosphine on Photoluminescence
title_short Mononuclear Copper(I) 3-(2-pyridyl)pyrazole Complexes: The Crucial Role of Phosphine on Photoluminescence
title_sort mononuclear copper(i) 3-(2-pyridyl)pyrazole complexes: the crucial role of phosphine on photoluminescence
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8620892/
https://www.ncbi.nlm.nih.gov/pubmed/34833961
http://dx.doi.org/10.3390/molecules26226869
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