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Three-arm atrp initiator with planar conjugated structure and its preparation and application

A planar conjugation and initiator technology, applied in the preparation of organic compounds, carboxylic acid amide preparation, organic chemistry, etc., can solve the problems of complex chemical structure design, complex polymerization reaction system, and difficult synthesis process, and achieve ingenious structure design , the universality of the reaction system is good, and the effect of simple synthesis steps

Active Publication Date: 2017-10-27
XIAMEN UNIV
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Problems solved by technology

The reason is that the design of the chemical structure of this type of initiator is complicated, the synthesis process is difficult, the raw materials are difficult to obtain, the cost is high, the applicable polymerization reaction system is also extremely complicated, and the post-treatment is difficult.

Method used

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  • Three-arm atrp initiator with planar conjugated structure and its preparation and application
  • Three-arm atrp initiator with planar conjugated structure and its preparation and application
  • Three-arm atrp initiator with planar conjugated structure and its preparation and application

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Embodiment Construction

[0030] The following embodiments describe the present invention in further detail in conjunction with the accompanying drawings.

[0031] (1) Dissolve 0.5 g of 1,3,5-tris(4-aminophenyl)benzene and 1 ml of bromoisobutyryl bromide in 10 ml of dichloromethane solution, place in an ice bath and stir for 10 min. 2ml of triethylamine solution was slowly added and stirred overnight at room temperature. After the reaction, it was purified by column chromatography, and the eluents were petroleum ether and ethyl acetate. The obtained solid was recrystallized with 10 ml of absolute ethanol to obtain a white solid of the three-armed ATRP initiator.

[0032] (2) Dissolve 0.5 g of three-arm ATRP initiator, 0.3 ml of tris(2-dimethylaminoethyl)amine, 0.1 g of cuprous bromide, and 1 ml of tert-butyl acrylate in DMF solution. Freezing-thawing and degassing were performed three times in succession, and then placed in an oil bath at 90°C for 24 hours after filling with argon for protection. Af...

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Abstract

The present invention relates to a preparation method of a three-arm atom transfer radical polymerization (ATRP) initiator with a planar-conjugated structure. First, 1,3,5-tris(4-aminophenyl)benzene is reacted in a nucleophilic substitution reaction with bromoisobutyryl bromide under triethylamine catalysis to prepare a high-efficiency three-arm ATRP initiator with extensive planar conjugation and electron-rich characteristics. Second, an optimal reaction system and after-treatment method suitable for the initiator is selected. A self-assembly study corresponding to a three-arm amphiphilic macromolecular polymer prepared via ATRP polymerization using the initiator is conducted. The three-arm ATRP initiator of the present invention not only meets the need for a planar-conjugated, electron-rich aromatic ATRP initiator, but is also suitable for polymerization of various types of monomer, thereby having good application potential.

Description

technical field [0001] The invention relates to an ATRP initiator, in particular to a three-arm ATRP initiator with a planar conjugated structure and its preparation and application. Background technique [0002] Atom transfer radical polymerization (ATRP) is the most widely used polymer synthesis method. The polymerization method has the dual characteristics of free radical polymerization and living polymerization at the same time, and has good universality, strong controllability and low cost. The polymer synthesized by this method can not only achieve the expected polymer molecular weight, but also achieve a narrow distribution range of the polymer and a high yield, so it is an effective tool for the design of a new type of macromolecular structure. In recent years, the synthesis of multi-armed and star-shaped polymers by ATRP polymerization is common, and has gradually become a research hotspot in the field of polymer chemistry. At present, through the regulation of AT...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F4/00C08F120/18C08F293/00C08F220/18C08J3/07C07C231/02C07C233/43
CPCC07C231/02C07C233/43C08F4/00C08F120/18C08F220/18C08F220/1804C08F293/005C08F2438/01C08J3/07C08J2353/00C08F293/00
Inventor 戴李宗吴俣哲袁丛辉毛杰李云同许一婷曾碧榕罗伟昂
Owner XIAMEN UNIV
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