Preparation method of bonded salicylaldehyde type bidentate Schiff base ligand polysulfone-rare earth ion complex luminescence material

A technology of bidentate Schiff base and rare earth ions, which is applied in the direction of luminescent materials, chemical instruments and methods, etc., can solve the problems of luminescent performance and non-sensitization function of limited functional materials, and achieve excellent mechanical properties and easy processing and molding.

Inactive Publication Date: 2015-12-16
ZHONGBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the reported bonded polymer-rare earth complex luminescent materials, most of the ligands participating in the coordination on the polymer side chain are aliphatic carboxyl groups (mainly from monomeric acrylic acid or methacrylic acid) (SuoQL, LuF, ShiJW, HongHL, LuoJP.Journal of RareEarths, 2009, 27:28) The aliphatic carboxyl group only plays the role of coordination and chelation for rare earth ions, and has no sensitization function. It is necessary to add small molecular ligands for coordination coordination to form luminescent materials ( YanCH, YuCJ, HuHH, WangR, ZhangM, QiuGM.JournalofRareEarths, 2009, 27:761), which largely limits the luminescent properties of this type of functional materials

Method used

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  • Preparation method of bonded salicylaldehyde type bidentate Schiff base ligand polysulfone-rare earth ion complex luminescence material
  • Preparation method of bonded salicylaldehyde type bidentate Schiff base ligand polysulfone-rare earth ion complex luminescence material

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Experimental program
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Effect test

Embodiment 1

[0015] In a four-necked flask equipped with a stirrer, a condenser, and a thermometer, add 0.5 g of chloromethylated polysulfone (CMPSF) with a chlorine content of 1.75 mmol / g and 50 mL of solvent N,N- Dimethylformamide (DMF), then add 0.304g of p-hydroxysalicylaldehyde (HAS), and add 0.093g of acid-binding agent Na 2 CO 3 , N 2 Protected, stirred at a constant temperature of 70°C for 8 hours, bonded salicylaldehyde (SA) to the side chain of polysulfone (PSF), precipitated with ethanol, separated the polymer by suction filtration, washed alternately with ethanol and distilled water, and dried in vacuum until constant Heavy, that is, the modified polysulfone PSF-SA with salicylaldehyde bonded to the side chain. In the four-neck flask, add 0.35g modified polysulfone PSF-SA and 50mL DMAC to dissolve completely, then add 0.1mL aniline (AN), N 2 Protect the constant temperature at 65°C, stir and react for 8 hours. After the reaction, precipitate with water, separate the polymer,...

Embodiment 2

[0017] In a four-necked flask equipped with a stirrer, a condenser, and a thermometer, add 0.5 g of chloromethylated polysulfone (CMPSF) with a chlorine content of 1.75 mmol / g and 50 mL of solvent N,N- Dimethylacetamide (DMAC), then add 0.425g of p-hydroxysalicylaldehyde (HAS), and add 0.15g of acid-binding agent Na 2 CO 3 , N 2 Protected, stirred at a constant temperature of 80°C for 12 hours, bonded salicylaldehyde (SA) to the side chain of polysulfone (PSF), precipitated with ethanol, separated the polymer by suction filtration, washed alternately with ethanol and distilled water, and dried in vacuum until constant Heavy, that is, the modified polysulfone PSF-SA with salicylaldehyde bonded to the side chain. In the four-neck flask, add 0.35g modified polysulfone PSF-SA and 50mL DMAC to dissolve completely, then add 0.1mL aniline (AN), N 2Protect the constant temperature at 70°C, stir and react for 9 hours. After the reaction, precipitate with water, separate the polymer,...

Embodiment 3

[0019] In a four-necked flask equipped with a stirrer, a condenser, and a thermometer, add 0.5g of chloromethylated polysulfone (CMPSF) with a chlorine content of 1.75mmol / g and 50mL of solvent DMAC, and then add p-hydroxysalicylaldehyde (HAS) 0.4g, and add 0.1g acid-binding agent Na 2 CO 3 , N 2 Protected, stirred at a constant temperature of 90°C for 10 h, bonded salicylaldehyde (SA) to the side chain of polysulfone (PSF), precipitated with ethanol, separated by suction filtration, washed alternately with ethanol and distilled water, and dried in vacuum until constant Heavy, that is, the modified polysulfone PSF-SA with salicylaldehyde bonded to the side chain. In the four-neck flask, add 0.35g modified polysulfone PSF-SA and 50mL DMAC to dissolve completely, then add 0.1mL aniline (AN), N 2 Protect the constant temperature at 60°C, stir and react for 8 hours. After the reaction, precipitate with water, separate the polymer, wash alternately with ethanol and distilled wat...

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Abstract

The invention belongs to the field of bonded polymer-rare earth complex luminescence materials, and concretely relates to a preparation method of a bonded salicylaldehyde type bidentate Schiff base ligand polysulfone-rare earth ion complex luminescence material. The polydentate Schiff base ligand is a ligand with dual functions of coordination chelating and sensitized luminescence. The preparation method comprises the following steps: bonding salicylaldehyde to a polysulfone side chain, and carrying out a Schiff base reaction on an aldehyde group and a primary amino group in order to form a bidentate Schiff base ligand; and carrying out coordination chelating on the Schiff base ligand and rare earth ions to form a stable complex, and strong sensitizing fluorescence emission of the rare earth ions to obtain the salicylaldehyde type bidentate Schiff base ligand polysulfone-rare earth ion complex luminescence material. The method is simple and does not need cooperation coordination of micro-molecules, and the prepared binary polymer-rare earth complex possesses an internal homogeneous phase, and also has the characteristics of excellent mechanical properties and easy machine shaping of polysulfone.

Description

technical field [0001] The invention belongs to the field of bonded polymer-rare earth complex luminescent materials, in particular to a method for preparing a bonded salicylaldehyde bidentate Schiff base ligand polysulfone-rare earth ion complex luminescent material. Background technique [0002] In the field of luminescent materials, bonded polymer-rare earth complexes are a very important class of materials. This type of material combines the unique luminescent properties of small molecule rare earth complexes (narrow-band emission, internal quantum efficiency, long fluorescence lifetime and large Stokes shift, etc.) with the good mechanical properties and easy processing of polymers (especially It is easy to form a film), and the material also exhibits homogeneous characteristics inside, so it is a kind of high-performance rare earth complex luminescent material. It has potential application value and development prospect in the fields of photoluminescence, electrolumin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/06C08G75/20
Inventor 门吉英陈建军高保娇李延斌查显宇李欢
Owner ZHONGBEI UNIV
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