Photoluminescence property of polymer–rare earth complexes containing acetaldehyde/aminophenol type bidentate Schiff base ligand

Zhang, Dandan; Gao, Baojiao; Cui, Kunli

doi:10.1080/00958972.2017.1371299

Cited by 5 publications

(4 citation statements)

References 41 publications

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“…Functionalization of PSF with sulfonated hydroxypropyl chitosan leads to an increase of the membrane’s biocompatibility and antimicrobial properties due to the presence of chitosan through a Schiff base reaction carried out between the attached acetaldehyde and ortho-aminophenol (OAP) or meta-aminophenol (MAP) of PSF [ 62 ]. Firstly, chitosan was treated with propylene/isopropanol oxide for hydroxypropyl grafting, followed by sulfonation with formamide/chlorosulfonic acid in order to obtain hydroxypropyl chitosan sulfonate.…”

Section: Polysulfone Functionalized Membranes For Hemodialysismentioning

confidence: 99%

Functionalized Hemodialysis Polysulfone Membranes with Improved Hemocompatibility

Radu

Voicu

2022

Polymers

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The field of membrane materials is one of the most dynamic due to the continuously changing requirements regarding the selectivity and the upgradation of the materials developed with the constantly changing needs. Two membrane processes are essential at present, not for development, but for everyday life—desalination and hemodialysis. Hemodialysis has preserved life and increased life expectancy over the past 60–70 years for tens of millions of people with chronic kidney dysfunction. In addition to the challenges related to the efficiency and separative properties of the membranes, the biggest challenge remained and still remains the assurance of hemocompatibility—not affecting the blood during its recirculation outside the body for 4 h once every two days. This review presents the latest research carried out in the field of functionalization of polysulfone membranes (the most used polymer in the preparation of membranes for hemodialysis) with the purpose of increasing the hemocompatibility and efficiency of the separation process itself with a decreasing impact on the body.

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Section: Polysulfone Functionalized Membranes For Hemodialysismentioning

confidence: 99%

Functionalized Hemodialysis Polysulfone Membranes with Improved Hemocompatibility

Radu

Voicu

2022

Polymers

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“…Quantum yield of photoluminescence of complexes. The photoluminescence quantum yields (F) of the prepared polymer-rare complexes were measured using a relative method using quinine sulfate as the standard, 29,31 and the data are listed in Table 1.…”

Section: Characterization Of Complexesmentioning

confidence: 99%

“…As long as ligands possessing the dual functions of coordination chelation and sensitization for lanthanide ions are to be chemically introduced onto the side chains of polymers with excellent properties such as polysulfone (PSF) by ingenious molecular design, luminescent polymer-rare earth complexes with high performance will be obtained via the subsequent coordination chelating reaction between the bonded dual-functional ligands and lanthanide ions. According to this concept, we successfully designed and synthesized two broad categories of luminescent polymer-rare earth complexes, aromatic carboxylic acid-type [25][26][27][28] and Schiff base-type [29][30][31] polymer-rare earth complexes. In the structures of these complexes, aromatic carboxylic acid ligands (benzoic acid or naphthoic acid) as bidentate ligands or bidentate Schiff base ligands with different structures were contained, respectively.…”

Section: Introductionmentioning

confidence: 99%

“…Bidentate Schiff base ligands with different structures can be synchronously synthesized and bonded onto polymer backbones through molecular design so as to form luminescent bonding-type polymer-rare earth complexes with various structures. [29][30][31] The structures of the bonded ligands will have a crucial influence on the luminous properties of the polymer-rare earth complexes. In our previous study, 32 through three polymer reaction steps, chloromethylation reaction, Friedel-Crafts alkylation reaction and Schiff base reaction, two kinds of bidentate Schiff base ligands derived from benzaldehyde, benzaldehyde/m-aminophenol (BAMA) type and benzaldehyde/glutamic acid (BAGL) type bidentate Schiff base ligands, were synchronously synthesized and bonded onto the backbone of polysulfone (PSF), resulting in two functional polymers PSF-BAMA and PSF-BAGL.…”

Section: Introductionmentioning

confidence: 99%

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

Gao

Zhang

2018

Phys. Chem. Chem. Phys.

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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. Then two series of novel luminescent Schiff base-type polymer-rare earth complexes were prepared via coordination reactions. In this work, the effects of the structures of the bonded ligands on the photoluminescence performance of the complexes were investigated in detail, and for the different photophysical properties of the prepared complexes, relevant theoretical explanations were given. The experimental results show that the bonded ligand BAMA can strongly sensitize the fluorescence emission of Eu(iii) ions, and the binary complex PSF-(BAMA)-Eu(iii) emits strong red fluorescence under UV light. The reason for this lies in the fact that a larger conjugate π-bond system is contained in the structure of BAMA, and so the triplet state of BAMA can be matched with the resonant energy level of the Eu(iii) ion. While the bonded ligand BAGL can effectively sensitize the fluorescence emission of Tb(iii) ions, the binary complex PSF-(BAGL)-Tb(iii) exhibits very strong green fluorescence under UV light. The reason is that a smaller conjugate π-bond system is contained in the structure of BAGL and there is a good energy level matching between the triplet state of BAGL and the resonant energy level of the Tb(iii) ion. The fluorescence intensities of the two ternary complexes, PSF-(BAMA)-Eu(iii)-(Phen) (phenanthroline, Phen) and PSF-(BAGL)-Tb(iii)-(Phen), are much stronger than that of the corresponding binary complex because Phen as the second ligand has two effects, the effect of synergistic coordination with the first ligand and the effect of replacing the coordinated water around the central ion, and it has been confirmed by fluorescence spectroscopy and thermogravimetric analysis.

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Tailoring properties and applications of polysulfone membranes by chemical modification: Structure-properties-applications relationship

Dumbrava¹,

Filimon²,

Marin³

2023

European Polymer Journal

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Photoluminescence property of polymer–rare earth complexes containing acetaldehyde/aminophenol type bidentate Schiff base ligand

Cited by 5 publications

References 41 publications

Functionalized Hemodialysis Polysulfone Membranes with Improved Hemocompatibility

Functionalized Hemodialysis Polysulfone Membranes with Improved Hemocompatibility

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

Tailoring properties and applications of polysulfone membranes by chemical modification: Structure-properties-applications relationship

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