TY - JOUR
T1 - Upconversion in a d–f [RuYb3] Supramolecular Assembly
AU - Knighton, Richard C.
AU - Soro, Lohona K.
AU - Thor, Waygen
AU - Strub, Jean-Marc
AU - Cianférani, Sarah
AU - Mély, Yves
AU - Lenertz, Marc
AU - Wong, Ka Leung
AU - Platas-Iglesias, Carlos
AU - Przybilla, Frédéric
AU - Charbonnière, Loïc J.
N1 - Funding Information:
The authors (L.J.C. and R.C.K.) gratefully acknowledge financial support 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).
Publisher Copyright:
© 2022 American Chemical Society. All rights reserved.
PY - 2022/7/27
Y1 - 2022/7/27
N2 - We have prepared a hetero-tetrametallic assembly consisting of three ytterbium ions coordinated to a central [Ru(bpm)3]2+ (bpm = 2,2′-bipyrimidine) motif. Irradiation into the absorption band of the peripheral ytterbium ions at 980 nm engenders emission of the 3MLCT state of the central [Ru(bpm)3]2+ core at 636 nm, which represents the first example of f → d molecular upconversion (UC). Time-resolved measurements reveal a slow rise of the UC emission, which was modeled with a mathematical treatment of the observed kinetics according to a cooperative photosensitization mechanism using a virtual Yb centered doubly excited state followed by energy transfer to the Ru centered 1MLCT state.
AB - We have prepared a hetero-tetrametallic assembly consisting of three ytterbium ions coordinated to a central [Ru(bpm)3]2+ (bpm = 2,2′-bipyrimidine) motif. Irradiation into the absorption band of the peripheral ytterbium ions at 980 nm engenders emission of the 3MLCT state of the central [Ru(bpm)3]2+ core at 636 nm, which represents the first example of f → d molecular upconversion (UC). Time-resolved measurements reveal a slow rise of the UC emission, which was modeled with a mathematical treatment of the observed kinetics according to a cooperative photosensitization mechanism using a virtual Yb centered doubly excited state followed by energy transfer to the Ru centered 1MLCT state.
UR - https://www.scopus.com/pages/publications/85134829303
U2 - 10.1021/jacs.2c05037
DO - 10.1021/jacs.2c05037
M3 - Journal article
SN - 0002-7863
VL - 144
SP - 13356
EP - 13365
JO - Journal of the American Chemical Society
JF - Journal of the American Chemical Society
IS - 29
ER -