Fluorescence enhancement of europium (III) perchlorate by 1,10-phenanthroline on the 1-(naphthalen-2-yl)-2-(phenylsulthio)ethanone complex and luminescence mechanism

ABSTRACT A novel ligand, 1‐(naphthalen‐2‐yl)‐2‐(phenylsulthio)ethanone was synthesized using a new method and its two europium (Eu) (III) complexes were synthesized. The compounds were characterized by elemental analysis, coordination titration analysis, molar conductivity, infrared, thermo gravimet...

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Published in:Luminescence (Chichester, England) England), 2014-11, Vol.29 (7), p.810-817
Main Authors: Li, Wen-Xian, Xin, Xiao-Dong, Feng, Shu-Yan, Liu, Yu, Zhang, Jing, Ao, Bo-Yang, Li, Ying-Jie
Format: Article
Language:English
Subjects:
1-(naphthalen-2-yl)-2-(phenylsulthio)ethanone
Binary systems
Calorimetry
Coordination Complexes - chemical synthesis
Coordination Complexes - chemistry
Europium
Europium - chemistry
europium complexes
Fluorescence
fluorescence enhancement
Ligands
Luminescence
Molecular Structure
Phenanthrolines - chemistry
Phosphorescence
Rare earth metals
Spectra
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Summary:ABSTRACT A novel ligand, 1‐(naphthalen‐2‐yl)‐2‐(phenylsulthio)ethanone was synthesized using a new method and its two europium (Eu) (III) complexes were synthesized. The compounds were characterized by elemental analysis, coordination titration analysis, molar conductivity, infrared, thermo gravimetric analyzer‐differential scanning calorimetry (TGA‐DSC), 1H NMR and UV spectra. The composition was suggested as EuL5 · (ClO4)3 · 2H2O and EuL4 · phen(ClO4)3 · 2H2O (L = C10H7COCH2SOC6H5). The fluorescence spectra showed that the Eu(III) displayed strong characteristic metal‐centered fluorescence in the solid state. The ternary rare earth complex showed stronger fluorescence intensity than the binary rare earth complex in such material. The strongest characteristic fluorescence emission intensity of the ternary system was 1.49 times as strong as that of the binary system. The phosphorescence spectra were also discussed. Copyright © 2014 John Wiley & Sons, Ltd.
ISSN:1522-7235
1522-7243
DOI:10.1002/bio.2625