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Spin-orbit coupling dependent energy transfer in luminescent nonanuclear Yb-Gd / Yb-Lu clusters

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Title: Spin-orbit coupling dependent energy transfer in luminescent nonanuclear Yb-Gd / Yb-Lu clusters
Authors: Omagari, Shun Browse this author
Nakanishi, Takayuki Browse this author
Kitagawa, Yuichi Browse this author
Seki, Tomohiro Browse this author
Fushimi, Koji Browse this author
Ito, Hajime Browse this author
Meijerink, Andries Browse this author
Hasegawa, Yasuchika Browse this author
Keywords: Lanthanide complexes
Lanthanide clusters
Energy transfer
Spin-orbit coupling
Issue Date: Sep-2018
Publisher: Elsevier
Journal Title: Journal of luminescence
Volume: 201
Start Page: 170
End Page: 175
Publisher DOI: 10.1016/j.jlumin.2018.04.049
Abstract: In luminescent lanthanide (Ln(III)) complexes, the yield and the lifetime of triplet excited state of organic ligands are crucial factors that affect the ligands-to-Ln(III) energy transfer efficiency. Such factors are dependent on spinorbit coupling induced by the Ln(III) ions that mixes different multiplicity states through heavy atom and paramagnetic effects. We investigated the role of these effects on the energy transfer efficiency in synthesized nonanuclear Yb-Gd / Yb-Lu clusters ([Ln(9)(mu-OH)(10)(butyl salicylate)(16)]NO3, Ln(9) = YbnGd9-n or YbnLu9-n, n = 0, 1, 3, 7, and 9). Based on the intensity of the fluorescence and phosphorescence of the ligands, the spin-orbit coupling strength was in the order of Yb(III) > Gd(III) > Lu(III). Various photophysical processes affecting the energy transfer efficiency in YbnGd9-n and YbnLu9-n clusters are discussed from the perspective of spin-orbit coupling and give insight in how to optimize energy transfer efficiencies.
Rights: ©2018. This manuscript version is made available under the CC-BY-NC-ND 4.0 license
Type: article (author version)
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 長谷川 靖哉

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