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Thienopyrroledione-based micromolecular acceptor material as well as preparation method and application of thienopyrroledione-based micromolecular acceptor material

A small-molecule acceptor and diketopyrrole-type technology, which is applied in semiconductor/solid-state device manufacturing, electrical solid-state devices, semiconductor devices, etc., can solve problems affecting the absorption of active layer materials and affecting the photogenerated current of devices

Active Publication Date: 2019-02-22
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are few reports on high-efficiency small molecule acceptor materials based on medium band gaps, which will affect the absorption of active layer materials at 400-600 nm, thereby affecting the photogenerated current of the device.

Method used

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  • Thienopyrroledione-based micromolecular acceptor material as well as preparation method and application of thienopyrroledione-based micromolecular acceptor material
  • Thienopyrroledione-based micromolecular acceptor material as well as preparation method and application of thienopyrroledione-based micromolecular acceptor material
  • Thienopyrroledione-based micromolecular acceptor material as well as preparation method and application of thienopyrroledione-based micromolecular acceptor material

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Experimental program
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Effect test

Embodiment 1

[0083] Thienopyrrole diketone (EHTPDThRCN) based on the present embodiment 2 The structural formula of BT small molecule acceptor material:

[0084]

[0085] Its synthetic steps are as follows:

[0086] Synthesis of Step 1 compound 4,7-dibromobenzo[c][1,2,5]thiadiazole

[0087]

[0088] Add benzo[c][1,2,5]thiadiazole (10g, 0.073mol) to 150mL hydrobromic acid solution (8.7mol / L hydrobromic acid solution), and slowly add it with a constant pressure dropping funnel Liquid bromine (25.66g, 0.1606mol), after the addition, the reaction was refluxed at 130°C for 12h, after cooling, slowly add sodium hydroxide solution under ice bath conditions, adjust the pH to about 7, then add dichloromethane and Extract with distilled water, dry the organic layer with anhydrous magnesium sulfate, filter, distill off the solvent under reduced pressure, and then separate with a silica gel column. The eluents are petroleum ether and dichloromethane to obtain 19.7 g of light yellow crystals, w...

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Abstract

The invention belongs to the technical field of organic semiconductor materials and discloses a thienopyrroledione-based micromolecular acceptor material as well as a preparation method and application of the thienopyrroledione-based micromolecular acceptor material. The Thienopyrroledione-based micromolecular acceptor material has a structure of A2-Pai-A1-Pai-A2; A1 is an electron absorbing unitand has a structure as shown in the specification, wherein R is any one of an alkyl chain and an alkoxy chain containing 1-12 carbons; Ar is an electron absorbing unit; A2 is an electron absorbing endgroup; and Pai is a group containing a thiophene structure. The invention further discloses a preparation method of the material. The material disclosed by the invention is simple in synthesis and purification and good in solubleness, film formation property, film shape stability and electron mobility; in addition, the micromolecular acceptor material has good compatibility with COi8DFIC and hasan important application prospect due to use as an acceptor in a solar cell device.

Description

technical field [0001] The invention belongs to the technical field of organic semiconductor materials, relates to a preparation method of organic semiconductor materials, in particular to a thienopyrrole diketone A 2 -π-A 1 -π-A 2 Structured small molecule acceptor material (organic small molecule electron transport material) and its preparation method and application. Background technique [0002] Organic semiconductor materials have been used in organic light-emitting diodes (OLEDs) in recent years S ), Organic Thin Film Transistor (OFET S ), organic thin film solar cells (OPV S ) and other fields are developing rapidly and have important application prospects. Fullerenes, as electron acceptors, are widely used in the research of OPV devices, but they are difficult to modify. Common fullerene derivatives PC 61 BM and PC 71 BM absorbs weakly in the visible region. Non-fullerene acceptor materials have the characteristics of various structures and strong absorption...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D519/00H01L51/46
CPCC07D519/00H10K85/655H10K85/656H10K85/657Y02E10/549
Inventor 朱旭辉罗豆曹镛
Owner SOUTH CHINA UNIV OF TECH
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