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Method for chemically synthesizing La doped polyo-toluidine in ion liquid

A technology of o-toluidine and ionic liquid, which is applied in the field of chemical synthesis of La-doped poly-o-toluidine in ionic liquid, and can solve the problems of chemical synthesis of poly-o-toluidine that has not been reported.

Inactive Publication Date: 2008-11-19
YANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

So far, about the ionic liquid and LaCl 3 The research on the chemical synthesis of poly-o-toluidine in the presence of

Method used

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Embodiment Construction

[0009] 1. Raw materials: o-toluidine is distilled under reduced pressure until it is colorless before use, and stored in a refrigerator at 4°C for later use. LaCl 3 The purity is 99.9%, the ionic liquid is pure ethyl sulfate-1-methyl-3-ethylimidazole, and other chemical reagents are analytically pure. All solutions were prepared with double distilled water.

[0010] 2. Prepared with LaCl 3 , o-toluidine and hydrochloric acid solution: first weigh 5-9g of LaCl 3 Place in a 50ml volumetric flask and dissolve with an appropriate amount of double-distilled water, then add 2.4-3.5g of hydrochloric acid with a concentration of 40%, 1-2.5g of analytically pure o-toluidine, 1-8g of ionic liquid, and add double-distilled water to 50ml.

[0011] 3. Preparation for synthesis: wash and dry the glassware and stirring bar to be used in advance.

[0012] 4. Chemical synthesis: Place a reaction vessel on a magnetic stirrer, slowly add 1.5-5g of oxidant ammonium persulfate into the reacti...

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Abstract

The invention relates to La doping poly o-toluidine chemical synthesis method in ion liquid. It includes the following steps: in hydrochloric acid, rare earth ion La3+ and o-toluidine system, using ammonium sulfate as oxidizing agent; controlling the weight ratio of the ion liquid ethyl sulfate-1-methyl-3-ethyl imidazole and o-toluidine at 1:2; reacting for 1-3h; pumping filtering to gain solid outcome; washing it by 2mol dm-3 hydrochloric acid to make filtrate colorless; drying to make poly o-toluidine which has the advantages of high conductivity reached to 10s cm-1, better electrochemistry activity, reducing melting point, increasing processing performance and application range etc.

Description

technical field [0001] The invention relates to the technical field of poly-o-toluidine with conductivity. Background technique [0002] Polyaniline has excellent electrochemical activity, but its poor processability due to its infusibility and insolubility in common solvents limits its application range. Modifying the structure of polyaniline is one of the effective ways to improve the processability of polyaniline. O-toluidine and aniline have a similar structure, yet poly-o-toluidine (POT) synthesized from o-toluidine as a monomer can be dissolved in many common solvents to obtain conductive poly-o-toluidine with good processability, Therefore, the research on the synthesis and properties of poly-o-toluidine has aroused the interest of many researchers. According to reports, poly-o-toluidine can be used in multiple fields such as secondary batteries, sensor materials, electromagnetic shielding, molecular assemblies, and energy storage systems. Oxidative polymerization ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G73/02
Inventor 阚锦晴唐荣
Owner YANGZHOU UNIV