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DPP (diketopyrrolopyrrole) block polymer with triphenylamine groups, method for preparing DPP block polymer and application thereof

A block polymer, triphenylamine-based technology, applied in the field of DPP block polymers, can solve the problems of difficult film formation, low solubility, etc., and achieve excellent electrochromic effect

Inactive Publication Date: 2018-11-02
HEILONGJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to solve the problem of low solubility of DPP-containing compounds in organic solvents and difficulty in processing into films, and provides DPP block polymers containing triphenylamine groups, its preparation method and application

Method used

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  • DPP (diketopyrrolopyrrole) block polymer with triphenylamine groups, method for preparing DPP block polymer and application thereof
  • DPP (diketopyrrolopyrrole) block polymer with triphenylamine groups, method for preparing DPP block polymer and application thereof
  • DPP (diketopyrrolopyrrole) block polymer with triphenylamine groups, method for preparing DPP block polymer and application thereof

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specific Embodiment approach 1

[0025] Specific embodiment one: the structural formula of the DPP block polymer containing triphenylamine group in this embodiment is as follows:

[0026] ,

[0027] In the formula, n is a positive integer.

specific Embodiment approach 2

[0028] Embodiment 2: This embodiment differs from Embodiment 1 in that: in the structural formula of the DPP block polymer containing triphenylamine groups, n is a positive integer ranging from 3 to 10. It is the same as the first embodiment.

specific Embodiment approach 3

[0029] Specific embodiment three: the preparation method of the DPP block polymer containing triphenylamine group in this embodiment is carried out in the following steps:

[0030] 1. Synthesis of 3,6-bis(thiophen-2-yl)-2,5-bis(8-(tributylstannyl)octyl)pyrrolo[3,4-c]pyrrole-1,4(2H, 5H)-diketone: ①, mix tert-amyl alcohol and sodium, add 2-cyanothiophene and dimethyl succinate to it, pass into N 2 For protection, react at a temperature of 90-120°C for 18-28 hours, then lower the reaction temperature from 90-120°C to 60-80°C, then add glacial acetic acid drop by drop until the reaction liquid is viscous with solid precipitation, and then Add methanol and water to dilute, then cool to room temperature under stirring, wash with water for 3 to 5 times and then with methanol for 3 to 5 times to obtain a deep red solid, which is DPP; ②, the DPP obtained in step ①, Potassium tert-butoxide and anhydrous DMF were mixed, and N 2 For protection, react at a temperature of 100°C for 2 to 5 h...

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Abstract

The invention relates to a DPP (diketopyrrolopyrrole) block polymer with triphenylamine groups, a method for preparing the DPP block polymer and application thereof. The method includes firstly, synthesizing 3, 6-di-(thiophene-2-group)-2, 5-bis-[8-(tributyltin alkyl) octyl] pyrrolo-[3, 4-c] pyrrole-1, 4 (2H, 5H)-diketone; secondly, synthesizing N1, N1-bis-(4-bromobenzene)-N4, N4-diphenylbenzene-1,4-diamine monomers; thirdly, synthesizing the DPP block polymer with the triphenylamine groups. The DPP block polymer, the method and the application have the advantages that the problems that DPP with strong fluorescence is low in solubility in organic solvents and is difficult to process to form films can be solved by the aid of the DPP block polymer, the method and the application; the DPP block polymer which is a material can be applied to preparing photoelectric materials including electrochromic materials, fluorescent sensing materials, hole transport materials, anti-counterfeiting materials, camouflage materials and explosive detection and memory performance components.

Description

technical field [0001] The invention relates to a DPP block polymer containing triphenylamine groups, its preparation method and application. Background technique [0002] At present, the most commonly used method to prepare thermally activated delayed fluorescent materials is to construct a donor-acceptor (D-A) structure. Due to the intramolecular charge transfer between the donor-acceptor, the absorption spectrum is red-shifted and the energy gap is narrowed. Therefore, it has a good application prospect in the application of organic materials. The synthesis of triarylamine compounds has been deeply studied in many articles, but triarylamine polymers have only been extensively studied in recent years. Due to its unique propeller-like structure, triarylamine molecules have excellent heat resistance, photoconductivity and hole transport properties, and are soluble in most organic solvents, and undergo a redox process to obtain conductor properties. Because the DPP group ha...

Claims

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Application Information

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IPC IPC(8): C08G61/12G01N21/64
CPCC08G61/124C08G2261/124C08G2261/145C08G2261/3241C08G2261/344C08G2261/54G01N21/6428G01N21/643G01N2021/6432
Inventor 牛海军陈烨焦先轩张志鹏葛浩然范景贺
Owner HEILONGJIANG UNIV
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