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Carboxyl-terminated hyperbranched polyester rare earth complex as well as preparation method and application thereof

A technology of hyperbranched polyester and rare earth complexes, applied in chemical instruments and methods, compounds containing elements of group 3/13 of the periodic table, organic compounds of group 3/13 without C-metal bonds, etc., can solve complex problems The problem of weak fluorescence, fluorescence lifetime and luminescence performance without further research and analysis, cumbersome and other problems, to achieve the effect of simple preparation method, long luminescence lifetime, good dispersion and compatibility

Active Publication Date: 2015-07-29
JIAXING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The process of preparing ligands in this method is very cumbersome and needs to go through multi-step synthesis reactions. At the same time, the fluorescence of the obtained complexes is weak. performance without further research analysis

Method used

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  • Carboxyl-terminated hyperbranched polyester rare earth complex as well as preparation method and application thereof
  • Carboxyl-terminated hyperbranched polyester rare earth complex as well as preparation method and application thereof
  • Carboxyl-terminated hyperbranched polyester rare earth complex as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Add 0.5000g of carboxy-terminated hyperbranched polyester I, 0.8828g of terbium nitrate and 1.1588g of 1,10-phenanthroline into a three-necked flask, add 20ml of N,N-dimethylformamide, dissolve and mix evenly, at 80°C Stir and react for 3 hours, cool to room temperature, settle the reaction solution in a large amount of absolute ethanol, filter it with suction, and dry it in vacuum at 80°C for 12 hours to obtain a pale yellow powder carboxyl-terminated hyperbranched polyester terbium complex. The structural formula of above-mentioned carboxyl-terminated hyperbranched polyester I is as follows:

[0053]

[0054] attached figure 1 It is the infrared spectrogram of the carboxyl-terminated hyperbranched polyester terbium complex, carboxyl-terminated hyperbranched polyester I and 1,10-phenanthroline in Example 1. The 1725cm of the carboxyl carbonyl stretching vibration attributed to the carboxyl-terminated hyperbranched polyester I -1 The absorption peak at the terbium ...

Embodiment 2

[0065] Add 0.5000g of carboxyl-terminated hyperbranched polyester II, 1.1245g of europium nitrate and 1.6960g of dibenzoylmethane into a three-necked flask, add 20ml of N,N-dimethylformamide, dissolve and mix evenly, and stir at 60°C React for 4 hours, cool to room temperature, settle the reaction solution in a large amount of ethyl acetate, filter it with suction, and dry it in vacuum at 80°C for 12 hours to obtain a light yellow powder carboxyl-terminated hyperbranched polyester europium complex. The structural formula of above-mentioned carboxyl-terminated hyperbranched polyester II is as follows:

[0066]

[0067] attached Figure 5 It is the fluorescence emission spectrum of the carboxyl-terminated hyperbranched polyester europium complex in Example 2 under excitation at 347 nm. The maximum excitation wavelength of the carboxyl-terminated hyperbranched polyester europium complex is 347nm. Under the excitation of 347nm, it can emit the characteristic fluorescence of eu...

Embodiment 3

[0072] Add 0.5000g of carboxy-terminated hyperbranched polyester III, 1.2689g of samarium nitrate and 1.6976g of 1,10-phenanthroline into a three-necked flask, add 20ml of dimethyl sulfoxide, dissolve and mix evenly, and stir and react at 80°C for 3h , cooled to room temperature, the reaction solution was settled in a large amount of absolute ethanol, suction filtered, and vacuum-dried at 80° C. for 12 hours to obtain samarium complex I of carboxyl-terminated hyperbranched polyester in the form of light yellow powder. The structural formula of above-mentioned carboxyl-terminated hyperbranched polyester III is as follows:

[0073]

[0074] attached Figure 7 It is the fluorescence emission spectrum of the carboxyl-terminated hyperbranched polyester samarium complex I excited at 342nm in Example 3. The maximum excitation wavelength of carboxyl-terminated hyperbranched polyester samarium complex I is 342nm, under the excitation of 342nm, it can emit the characteristic fluores...

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Abstract

The invention discloses a carboxyl-terminated hyperbranched polyester rare earth complex as well as a preparation method and an application thereof. The carboxyl-terminated hyperbranched polyester rare earth complex is represented by a formula (I). The preparation method comprises steps as follows: carboxyl-terminated hyperbranched polyester, second ligands and rare-earth chloride or nitrate are dissolved in an organic solvent for a reaction, and the carboxyl-terminated hyperbranched polyester rare earth complex is separated from a reaction liquid after the reaction. The preparation method of the carboxyl-terminated hyperbranched polyester rare earth complex is simple, higher characteristic fluorescence of rare earth ions can be emitted, the fluorescence lifetime is longer, and the complex as a functional luminescent material can be used in the fields of a display material, a light amplification material or luminous paint and the like; compared with traditional fluorescent powder, the carboxyl-terminated hyperbranched polyester rare earth complex has better dispersibility and compatibility when added to epoxy resin.

Description

technical field [0001] The invention relates to a complex, in particular to a carboxyl-terminated hyperbranched polyester rare earth complex and a preparation method and application thereof. Background technique [0002] The unique 4f electron layer structure of rare earth elements makes them have special properties such as light, electricity, magnetism, and catalysis. Polymer materials have the advantages of easy processing and molding, and good physical and chemical stability. Introducing rare earth materials with special luminescent properties into the polymer matrix can produce a kind of rare earth polymer luminescent materials that have both the unique luminescent properties of rare earth ions and the excellent material properties of polymers. [0003] In the preparation of rare earth polymer luminescent materials, linear polymers are mostly used as polymer ligands. Compared with traditional linear polymers, highly branched polymers (hyperbranched polymers and dendrim...

Claims

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Application Information

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IPC IPC(8): C07F5/00C09K11/06C08G63/91C09D5/22C09D163/00
CPCC07F5/003C08G63/91C09D5/22C09D163/00C09K11/06C09K2211/182
Inventor 刘丹周大鹏王红梅吴秋姿郑斌杜乐美
Owner JIAXING UNIV
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