Preparation method of tartaric acid and citric acid compound nitrogen-doped fluorescent polymer nano point

A fluorescent polymer, tartaric acid technology, applied in chemical instruments and methods, luminescent materials, etc., can solve the problems of cumbersome synthesis route, toxicity of raw materials, and few effective methods, and achieve the effect of easy method and easy amplification

Active Publication Date: 2014-06-25
MINNAN NORMAL UNIV
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Problems solved by technology

[0011] (1) The first four methods of synthesizing fluorescent polymers all need to use raw materials with fluorophores, and these raw materials often have large conjugated structures and are potentially biotoxic
[0012] (2) In the methods of preparing fluorescent polymers by polymerization of non-fluorescent functional monomers, there are not many effective methods, the synthesis route is troublesome, and the raw materials are often highly toxic

Method used

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  • Preparation method of tartaric acid and citric acid compound nitrogen-doped fluorescent polymer nano point
  • Preparation method of tartaric acid and citric acid compound nitrogen-doped fluorescent polymer nano point
  • Preparation method of tartaric acid and citric acid compound nitrogen-doped fluorescent polymer nano point

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preparation example Construction

[0034] A kind of preparation method of tartaric acid and citric acid composite nitrogen-doped fluorescent polymer nano-dot is characterized in that comprising the following steps:

[0035] Step 1, weighing raw materials

[0036] Weigh 1.5-3.0g L-tartaric acid and 0-1.5g citric acid in a three-necked bottle;

[0037] Step 2, heating reaction

[0038] Add 10-30ml of oleic acid and 0.3-5ml of ethylenediamine into the three-necked bottle in step 1, heat to 180-250 degrees while stirring, stop the reaction after keeping warm for 10-60min, and put the three-necked bottle while it is hot The reaction solution in the mixture was poured into a beaker, and the heating rate was 15° C. / min.

[0039] Step three, washing

[0040] The reaction solution prepared in step 2 was fully washed successively with three washing solutions of n-hexane, ethanol and chloroform, each of the three washing solutions was washed 5 times, each time the amount was 10 ml, soaked for 10 minutes, and then filte...

Embodiment 1

[0052] Weigh 1.5g of citric acid and 1.5g of L-tartaric acid into a three-necked bottle, add 30ml of oleic acid and 5ml of ethylenediamine, stir and heat, and set the temperature to 220 degrees. When the temperature rose to 150°C, the solid dissolved and the solution began to boil. The color gradually changed from colorless to brown, and then dark brown as the reaction progressed. The reaction was stopped after 30 minutes, and the reaction solution was poured out while it was hot. The product was washed thoroughly with n-hexane, ethanol and chloroform in sequence, and dried in vacuum at 50 degrees to obtain tartaric acid and citric acid composite nitrogen-doped fluorescent polymer nanodots.

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Abstract

The invention discloses a novel synthesis of a fluorescent polymer nano point. By adopting natural products of tartaric acid and citric acid as raw materials, the nitrogen-doped fluorescent polymer nano point is prepared through a reaction with ethanediamine in oleic acid, and a synthesis product is subjected to infrared characterization, ultraviolet characterization, fluorescence characterization, circular dichroism characterization, NMR characterization and a TEM characterization, the quantum yield of the synthesis product is capable of reaching 48.7 percent maximally, and a CD signal is achieved, and thus a method for synthesizing the fluorescent polymer nano point by using a non-fluorescence raw material with biocompatibility is provided.

Description

technical field [0001] The patent of the present invention relates to a preparation method of tartaric acid and citric acid composite nitrogen-doped fluorescent polymer nano-dots. Background technique [0002] In recent years, the application of fluorescent polymers in fluorescent chemical sensors, fluorescent imaging, drug carriers, fluorescent probes, etc. has attracted widespread attention. Fluorescent polymers can be divided into water-soluble, water-insoluble, and amphiphilic fluorescent polymers according to their solubility properties. They can be synthesized by polymerization of fluorescent functional monomers, chemical bonding of fluorescent compounds and polymers, and polymerization of non-fluorescent functional monomers. Compared with fluorescent organic small molecules, polymer-based optical sensors have the advantages of easy preparation of film-forming devices, large response signals, high binding efficiency to detection substrates, and good recognition selecti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/06C08G63/81C09K11/06
Inventor 翁文姚碧霞杨新梅
Owner MINNAN NORMAL UNIV
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