Ternary Eu3+ crystalline complexes with photoluminescence and triboluminescence for dynamic stress visualization

Li, Huimin; Chen, Yan; Wang, Tianyi; Liu, Lingdi; Zhang, Bingbing; Wang, Ying; Yang, Daqing

doi:10.1016/j.jcis.2024.05.110

Journal of Colloid and Interface Science

2024

DOI: 10.1016/j.jcis.2024.05.110

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Ternary Eu3+ crystalline complexes with photoluminescence and triboluminescence for dynamic stress visualization

Huimin Li,

Yan Chen,

Tianyi Wang

et al.

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Microwave Synthesis and Luminescence Efficiencies in Mixed‐Ligand Europium Complexes

Oliveira,

Castro,

Gonçalves

et al. 2024

Chemistry An Asian Journal

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The microwave‐assisted methodology is now extended and fine‐tuned for the synthesis of mixed‐ligand europium complexes with an average reaction time of 12 min. Overall, 14 different complexes were synthesized to improve luminescence using our previously proposed strategy to boost luminescence through ligand diversification, specifically by applying it to quaternary europium complexes with at least one DBM (1,3‐diphenylpropane‐1,3‐dionate) ligand. DBM is a strong absorbant of UV radiation that can dissipate energy through nonradiative channels; thus, it is a useful molecular scaffold for sunblockers and cosmetics. Accordingly, the following luminescent tetrakis and quaternary complexes were prepared: K[Eu(DBM)4], K[Eu(β)4], K[Eu(DBM)3(β)], K[Eu(DBM)2(β)2], K[Eu(DBM)2(β)(β’)], and the fully mixed complex K[Eu(DBM)(BTFA)(TTA)(HFAC)], where β can be either BTFA (4,4,4‐trifluoro‐1‐phenylbutane‐1,3‐dionate), TTA (4,4,4‐trifluoro‐1‐(2‐thienyl)butane‐1,3‐dionate), or HFAC (1,1,1,5,5,5‐hexafluoropentane‐2,4‐dionate). For all the complexes, luminescence experiments were performed in chloroform and acetone solutions. Our findings confirm that mixed‐ligand complexes exhibit superior quantum efficiencies compared to the average of their homoleptic counterparts. The presence of DBM in the complexes tends to dramatically increase the nonradiative decay rates of the solutions. Finally, we present formulae that provide a detailed understanding of the distinctive roles of each ligand and their relevant interactions in luminescence.

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Microwave Synthesis and Luminescence Efficiencies in Mixed‐Ligand Europium Complexes

Oliveira,

Castro,

Gonçalves

et al. 2024

Chemistry An Asian Journal

View full text Add to dashboard Cite

show abstract

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Ternary Eu3+ crystalline complexes with photoluminescence and triboluminescence for dynamic stress visualization

Cited by 1 publication

References 52 publications

Microwave Synthesis and Luminescence Efficiencies in Mixed‐Ligand Europium Complexes

Microwave Synthesis and Luminescence Efficiencies in Mixed‐Ligand Europium Complexes

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