Solution-state cooperative luminescence upconversion in molecular ytterbium dimers
Solution-state cooperative luminescence upconversion in molecular ytterbium dimers
Two homometallic ytterbium dimers are prepared and their solution-state photoluminescence and upconversion properties are investigated. Both complexes exhibit two-photon cooperative luminescence upconversion in the visible region (λem ≈ 510 nm) upon excitation into the near-infrared Yb 2F5/2 ← 2F7/2 absorption band at 980 nm. This miniaturization of the cooperative luminescence phenomenon down to just two Yb ions unequivocally proves the mechanistic origins of this process. Time-resolved measurements and excited-state modeling indicate the presence of a slow recombination of two singly excited ions Yb*Yb* into a virtual excited state, which ultimately gives rise to the observed emission at ≈510 nm.
cooperative luminescence, lanthanides, photoluminescence, upconversion
Soro, Lohona K.
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Knighton, Richard C.
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Avecilla, Fernando
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Thor, Waygen
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Przybilla, Frédéric
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Jeannin, Olivier
8c196df0-4525-439f-b52f-c3287c817c62
Esteban-Gomez, David
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Platas-Iglesias, Carlos
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Charbonnière, Loïc J.
cb976ce4-b45a-493c-bd86-3a5c508678d5
5 June 2023
Soro, Lohona K.
38527bf7-6809-4629-8292-005031501b98
Knighton, Richard C.
5a63128e-0ebd-466a-b327-3aee6e85a76d
Avecilla, Fernando
f4da07de-fda2-453e-9df9-4d3a494cc183
Thor, Waygen
0268a536-252a-4fa4-b1d4-e469c69d4d57
Przybilla, Frédéric
b732a7dd-b740-4df6-b328-46eeca2f0699
Jeannin, Olivier
8c196df0-4525-439f-b52f-c3287c817c62
Esteban-Gomez, David
0dd391e9-2953-493f-9929-8f61d3c06e94
Platas-Iglesias, Carlos
09138148-02fd-4418-951d-dce9b5ecd0a0
Charbonnière, Loïc J.
cb976ce4-b45a-493c-bd86-3a5c508678d5
Soro, Lohona K., Knighton, Richard C., Avecilla, Fernando, Thor, Waygen, Przybilla, Frédéric, Jeannin, Olivier, Esteban-Gomez, David, Platas-Iglesias, Carlos and Charbonnière, Loïc J.
(2023)
Solution-state cooperative luminescence upconversion in molecular ytterbium dimers.
Advanced Optical Materials, 11 (11), [2202307].
(doi:10.1002/adom.202202307).
Abstract
Two homometallic ytterbium dimers are prepared and their solution-state photoluminescence and upconversion properties are investigated. Both complexes exhibit two-photon cooperative luminescence upconversion in the visible region (λem ≈ 510 nm) upon excitation into the near-infrared Yb 2F5/2 ← 2F7/2 absorption band at 980 nm. This miniaturization of the cooperative luminescence phenomenon down to just two Yb ions unequivocally proves the mechanistic origins of this process. Time-resolved measurements and excited-state modeling indicate the presence of a slow recombination of two singly excited ions Yb*Yb* into a virtual excited state, which ultimately gives rise to the observed emission at ≈510 nm.
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Advanced Optical Materials - 2022 - Soro
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e-pub ahead of print date: 22 December 2022
Published date: 5 June 2023
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Funding Information:
Financial support is gratefully acknowledged (L.J.C. and R.C.K.) from the French Ministère de l'Education Nationale et de la Recherche, the French Canada Research Fund (L.K.S.), Frontier Research in Chemistry Foundation (LabEx CSC, ANR‐10‐LABX‐0026_CSC), and the French National research agency (LAPIN project no. ANR‐20‐CE09‐0021‐02; LUCAS project no. ANR‐19‐CE29‐0014‐01). C.P.‐I. thanks the Centro de Computación de Galicia (CESGA) for providing the computer facilities and the Ministerio de Ciencia e Innovación (Grant PID2019‐104626GB‐I00). Benjamin Beaufils is thanked for the synthesis of 2,2′‐bipyrimidine.
Keywords:
cooperative luminescence, lanthanides, photoluminescence, upconversion
Identifiers
Local EPrints ID: 482251
URI: http://eprints.soton.ac.uk/id/eprint/482251
ISSN: 2195-1071
PURE UUID: dccb19a9-e848-4a31-b5d2-659b8b375371
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Date deposited: 22 Sep 2023 16:33
Last modified: 18 Mar 2024 04:15
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Contributors
Author:
Lohona K. Soro
Author:
Richard C. Knighton
Author:
Fernando Avecilla
Author:
Waygen Thor
Author:
Frédéric Przybilla
Author:
Olivier Jeannin
Author:
David Esteban-Gomez
Author:
Carlos Platas-Iglesias
Author:
Loïc J. Charbonnière
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