Effects of structures of bidentate Schiff base type bonded-ligands derived from benzaldehyde on the photoluminescence performance of polymer–rare earth complexes

Two kinds of bidentate Schiff base ligands derived from benzaldehyde, benzaldehyde/m-aminophenol (BAMA) type and benzaldehyde/glutamic acid (BAGL) type ligands, were synchronously synthesized and bonded on the backbone of polysulfone (PSF) through molecular design and by polymer reactions, and two functional polymers, PSF-BAMA and PSF-BAGL, were obtained.

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Synthesis and photoluminescence properties of novel Schiff base type polymer-rare earth complexes containing furfural-based bidentate Schiff base ligands

Optical Materials ◽

10.1016/j.optmat.2017.12.052 ◽

2018 ◽

Vol 77 ◽

pp. 77-86 ◽

Cited By ~ 20

Author(s):

Baojiao Gao ◽

Dandan Zhang ◽

Yanbin Li

Keyword(s):

Schiff Base ◽

Rare Earth ◽

Rare Earth Complexes ◽

Photoluminescence Properties ◽

Schiff Base Ligands

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Synthesis and characterization of rare earth complexes with Phthalaldehyde-lysine Schiff base

Frontiers of Chemistry in China ◽

10.1007/s11458-006-0058-1 ◽

2006 ◽

Vol 1 (4) ◽

pp. 369-373 ◽

Cited By ~ 1

Author(s):

Meixian Hu ◽

Ning Li ◽

Kemin Yao

Keyword(s):

Schiff Base ◽

Rare Earth ◽

Rare Earth Complexes ◽

Synthesis And Characterization

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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 ◽

10.1515/epoly-2019-0003 ◽

2019 ◽

Vol 19 (1) ◽

pp. 15-22 ◽

Cited By ~ 2

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.

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