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

A technology of block polymers and carbazole groups, applied in the field of DPP block polymers, can solve the problems of low solubility, difficult processing and film formation, etc., and achieve the effects of improving solubility, excellent electrochromic and memory properties

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 that DPP-containing compounds have low solubility in organic solvents and are difficult to process into films, and provide DPP block polymers containing carbazole groups, their preparation methods and applications

Method used

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

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specific Embodiment approach 1

[0024] Specific embodiment one: the structural formula of the DPP block polymer containing carbazole group in this embodiment is as follows:

[0025] ,

[0026] In the formula, n is a positive integer.

specific Embodiment approach 2

[0027] Embodiment 2: This embodiment differs from Embodiment 1 in that: in the structural formula of the DPP block polymer containing carbazole groups, n is a positive integer ranging from 3 to 10. It is the same as the first embodiment.

specific Embodiment approach 3

[0028] Specific embodiment three: the preparation method of the DPP block polymer containing carbazole group in this embodiment is carried out according to the following steps:

[0029] 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...

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Abstract

The invention relates to a DPP (diketopyrrolopyrrole) block polymer with carbazole 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-carbazole monomers; thirdly, synthesizing the DPP block polymer with the carbazole groups. The DPP block polymer, the method and the application have the advantages that the problems of low solubility of compounds with DPP in organic solvents and difficulty in processing the compounds 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 carbazole groups, its preparation method and application. Background technique [0002] The diketopyrrolopyrrole (DPP) compound was first discovered by Farnum et al. in 1974, and then the research group led by Iqbal improved its synthetic route, which can be further reacted to obtain a higher yield. Since then, various derivatives have been synthesized and have attracted more and more attention. Because the DPP group has strong fluorescence characteristics, wide light absorption range, good thermal stability and good charge transport performance, people have summarized the factors that affect the performance of organic photovoltaic materials in the research of organic photovoltaic materials for many years. The main factor is that the organic small molecule photovoltaic donor material must meet the following conditions: (1) good solubility and film-forming properties; (2) wide absorption range, pr...

Claims

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Application Information

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IPC IPC(8): C08G61/12
CPCC08G61/124C08G2261/124C08G2261/143C08G2261/145C08G2261/148C08G2261/149C08G2261/15C08G2261/312C08G2261/3162C08G2261/3241C08G2261/3326C08G2261/414C08G2261/54C08G2261/64C08G2261/94
Inventor 牛海军陈烨路庆义庞国良范景贺
Owner HEILONGJIANG UNIV
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