Terbium-fluorido cluster: an energy cage for photoluminescence

We report here that energy migration during luminescence can be extremely minimized by caging the fluorescent centers in a molecular cluster of [Tb 6 (μ 3 -F) 8 (piv) 10 (Hpiv) 4 DMF]· x DMF· y H 2 O 1 . Experimental and theoretical simulations reveal that bonding terbium with fluoride is the key to...

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Published inChemical communications (Cambridge, England) Vol. 56; no. 64; pp. 913 - 9133
Main Authors Ling, Bo-Kai, Li, Junhao, Zhai, Yuan-Qi, Hsu, Hung-Kai, Chan, Yi-Tsu, Chen, Wei-Peng, Han, Tian, Zheng, Yan-Zhen
Format Journal Article
LanguageEnglish
Published Cambridge Royal Society of Chemistry 11.08.2020
Subjects
Clusters
Computer simulation
Crystallography
Fluorescence
Photoluminescence
Terbium
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Summary:We report here that energy migration during luminescence can be extremely minimized by caging the fluorescent centers in a molecular cluster of [Tb 6 (μ 3 -F) 8 (piv) 10 (Hpiv) 4 DMF]· x DMF· y H 2 O 1 . Experimental and theoretical simulations reveal that bonding terbium with fluoride is the key to reducing the non-radiative multi-phonon relaxation processes, which is disparate to the common hydroxy-based lanthanide clusters. This work demonstrates that encapsulating terbium ions into a fluorido-bridged cage by organic ligands significantly enhances the luminescence quantum yield of such sub-nanosized materials.
Bibliography:CCDC
1
For ESI and crystallographic data in CIF or other electronic format see DOI
Electronic supplementary information (ESI) available: Experimental and computational data; movies; CIF for complex
1975579
10.1039/d0cc02898c
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1359-7345
1364-548X
DOI:10.1039/d0cc02898c