Fluorescence Enhancement of Europium(III) Perchlorate by 2,2′-Dipyridyl on Bis(benzylsulfinyl)methane Complex

2013 ◽  
Vol 634-638 ◽  
pp. 2462-2465
Author(s):  
Wen Xian Li ◽  
Bo Yang Ao ◽  
Jing Zhang
Keyword(s):  
Rare Earth ◽  
Ternary Complex ◽  
Fluorescence Enhancement ◽  
Fluorescence Emission ◽  
Europium Complex ◽  
New Method ◽  
Rare Earth Complexes ◽  
Fluorescence Properties ◽  
Binary Complex ◽  
Fluorescence Lifetimes

A novel ligand with double sulfinyl groups, bis(benzylsulfinyl)methane L, was synthesized by a new method. Its novel ternary complex, has been synthesized [using L as the first ligand, and dipyridyl L' as the second ligand]. In order to study the effect of the second ligand on the fluorescence properties of rare-earth sulfoxide complex, a novel binary europium complex has been synthesized. Photoluminescent measurement showed that the first ligand L could efficiently transfer the energy to Eu (III) ions in the complex. Furthermore, the detailed luminescence analyses on the rare earth complexes indicated that the ternary Eu (III) complex manifested stronger fluorescence intensities, longer lifetimes, and higher fluorescence quantum efficiencies than the binary Eu (III) materials. The fluorescence emission intensities and fluorescence lifetimes of the ternary complex enhanced more obviously than the binary complex.

scholarly journals Preparation of polymer–rare earth complexes based on Schiff-base-containing salicylic aldehyde groups attached to the polymer and their fluorescence emission properties

e-Polymers ◽  
2019 ◽  
Vol 19 (1) ◽  
pp. 15-22 ◽  
Author(s):  
Dingjun Zhang ◽  
Wenjin Zhao ◽  
Zhaoxuan Feng ◽  
Youzhi Wu ◽  
Caixia Huo ◽  
...  
Keyword(s):  
Schiff Base ◽  
Rare Earth ◽  
Fluorescence Intensity ◽  
Butyl Acrylate ◽  
Fluorescence Emission ◽  
Rare Earth Complexes ◽  
Functionalized Polymers ◽  
Molar Ratio ◽  
Side Chains ◽  
Fluorescent Intensity

AbstractIn this study, the salicylaldehyde hydrazone was bonded onto the side chains of poly (styrene-co-butyl acrylate), firstly obtaining a series of novel Schiff base-functionalized polymers. and using the base-containing polymers as macromolecular ligands through further reaction with EuCl3/YbCl3·6H2O, a series of polymer-rare earth complexes based on Eu(III)/Yb(III) ion were successfully prepared. The structures of the schiff base-containing polymers and their corresponding complexes were characterized by means of infrared spectra and UV spectra. The thermal properties of the functionalized polymers and complexes were investigated by TGA, and the fluorescence properties of the complexes were also researched by fluorescence spectrum. The experimental results show that the complexes have fine thermal stability likely because of the bidentate chelate effect of base-containing polymer and the conjugative effect of salicylaldehyde hydrazone group on the side chain of poly (styrene-co-butyl acrylate). More important, the salicylaldehyde hydrazone group on the side chains of poly(styrene-co-butyl acrylate) can efficaciously sensitize the fluorescence emission of the center ion due to effective intramolecular energy transfer. All the Eu(III)/Yb(III) complexes exhibit characteristic photoluminescence peaks in the visible region. The fluorescence excitation spectra of the complexes were obtained by monitoring the emission of Eu3+/Yb3+ ion at 497 nm, and the peak at 433 nm was found to be the optimal excitation peak. The concentration of salicylaldehyde hydrazone group was changed gradually with the variation of the molar ratio between the butyl acrylate and styrene (1:0.5; 1:1; 1:1.5; 1:2; 1:2.5), and the differences in their fluorescent intensity were followed, and the fluorescence intensity was very weak when the molar ratio of the butyl acrylate to styrene is equal to 1:2.5, while the fluorescence intensity reached a maximum value in the molar ratio of 1:1.

scholarly journals FLUORESCENCE ENHANCEMENT OF Al3+– SODIUM MORIN–5–SULFONATE COMPLEX BY IMIDAZOLIUM IONIC LIQUID AND ITS APPLICATION IN DETERMINATION OF Al3+ IONS IN AN AQUEOUS SOLUTION

2019 ◽  
Vol 81 (2) ◽  
Author(s):  
Syaza Atikah Nizar ◽  
Nurul Syamimi Abdul Satar ◽  
Shaik Azri Shaik Amar ◽  
Fatin Hazirah Abdullah ◽  
Faizatul Shimal Mehamod ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Ionic Liquid ◽  
Acetic Acid ◽  
Ternary Complex ◽  
Fluorescence Enhancement ◽  
Calibration Graph ◽  
Fluorescence Signal ◽  
Binary Complex ◽  
Imidazolium Ionic Liquid

This study describes the preparation of sodium morin–5–sulfonate (NaMSA) as a new reagent for the determination of aluminium(III) (Al3+) ions based on the formation of a ternary complex. The complex consists of Al3+, NaMSA, and 1–Butyl–3–methylimidazolium hexafluorophosphate (BMIM–PF6). It was found that this method was sensitive compared to the binary complex of Al3+ and NaMSA. The ternary complex was excited at 420 nm, and the fluorescence signal was measured at 518 nm. Maximum fluorescence signal produced at pH 5.0 (acetic acid–acetate buffer), with 0.02% v/v BMIM–PF6 and 1.0 × 10-4 molL-1 of NaMSA. The calibration graph in linear up to 10 mgL-1 with the calculated detection limit of 0.017 mgL-1. Effect of foreign ions towards the ternary complex was also studied. Finally, the method was applied in the determination of Al3+ ions in water samples, and satisfactory results were obtained.

Study on fluorescence properties of rare earth complexes influenced by steric effect

2011 ◽  
Vol 29 (11) ◽  
pp. 1013-1017 ◽  
Author(s):  
Wei YUAN ◽  
Yumin CUI ◽  
Ruijuan SHI ◽  
Dongliang TAO ◽  
Yongzhong WANG ◽  
...  
Keyword(s):  
Rare Earth ◽  
Steric Effect ◽  
Rare Earth Complexes ◽  
Fluorescence Properties

Synthesis, characterization and fluorescence properties of a novel rare earth complexes with a multi-branched ligand and 1, 10-phen

2010 ◽  
Vol 28 ◽  
pp. 277-280 ◽  
Author(s):  
Peng XI ◽  
Miao ZHAO ◽  
Xiaohua GU ◽  
Zongren LI ◽  
Mingming GAO ◽  
...  
Keyword(s):  
Rare Earth ◽  
Rare Earth Complexes ◽  
Fluorescence Properties

Single-Molecule-Magnet Behavior and Fluorescence Properties of 8-Hydroxyquinolinate Derivative-Based Rare-Earth Complexes

2016 ◽  
Vol 55 (17) ◽  
pp. 8898-8904 ◽  
Author(s):  
Hong-Ling Gao ◽  
Li Jiang ◽  
Wen-Min Wang ◽  
Shi-Yu Wang ◽  
Hong-Xia Zhang ◽  
...  
Keyword(s):  
Rare Earth ◽  
Single Molecule ◽  
Rare Earth Complexes ◽  
Fluorescence Properties ◽  
Single Molecule Magnet

Germanium triazatetrabenzcorrole and germanium phthalocyanine: Synthesis, fluorescence and singlet oxygen generation

2018 ◽  
Vol 22 (09n10) ◽  
pp. 847-852 ◽  
Author(s):  
Xian-Fu Zhang ◽  
Xiaojie Sun
Keyword(s):  
Singlet Oxygen ◽  
Fluorescence Emission ◽  
Emission Spectra ◽  
Fluorescence Properties ◽  
Quantum Yields ◽  
Fluorescence Lifetimes ◽  
Fluorescence Emission Spectra ◽  
Oxygen Generation ◽  
Fluorescence Quantum Yields ◽  
Singlet Oxygen Generation

The synthesis, fluorescence properties and singlet oxygen generation capability of germanium tetrabenzotriazacorrole (LGeTBC), germanium phthalocyanine (Cl[Formula: see text]GePc) and their derivatives are described. Measurements include UV-vis absorption spectra, fluorescence emission spectra, fluorescence quantum yields fluorescence lifetimes, and singlet delta oxygen quantum yields. LGeTBC and its derivatives exhibit quite different spectral and fluorescence properties from their phthalocyanine precursor. Both LGeTBC and Cl[Formula: see text]GePc show high singlet delta oxygen quantum yields and suitable fluorescence quantum yields, indicating that they can act as good singlet oxygen photosensitizers for photodynamic therapy.

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