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A-D-A type photovoltaic small molecule receptor taking indeno[1,2-b]fluorine as core, as well as preparation method and application of A-D-A type photovoltaic small molecule receptor

A technology of A-D-A and small-molecule acceptors, which is applied in photovoltaic power generation, semiconductor/solid-state device manufacturing, electric solid-state devices, etc., can solve the problems of high cost, poor shape stability, and weak absorption of visible light bands, etc., to reduce crystallinity, band The effect of gap reduction

Inactive Publication Date: 2019-07-19
HANGZHOU NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, fullerene and its derivatives also have some inherent defects, such as: weak absorption in the visible light band, high cost, difficult to control the energy level, and poor morphological stability

Method used

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  • A-D-A type photovoltaic small molecule receptor taking indeno[1,2-b]fluorine as core, as well as preparation method and application of A-D-A type photovoltaic small molecule receptor
  • A-D-A type photovoltaic small molecule receptor taking indeno[1,2-b]fluorine as core, as well as preparation method and application of A-D-A type photovoltaic small molecule receptor
  • A-D-A type photovoltaic small molecule receptor taking indeno[1,2-b]fluorine as core, as well as preparation method and application of A-D-A type photovoltaic small molecule receptor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] (1) Preparation of compound shown in formula III:

[0040]Under the protection of argon, add the compound shown in formula I (200mg, 0.21mmol), the compound shown in formula II (248mg, 1.04mmol) and the mixed solvent A (120mL ), after complete dissolution, add tetrakistriphenylphosphine palladium (23mg, 0.02mmol), potassium carbonate (348mg, 2.52mmol), tetrabutylammonium bromide (16mg, 0.05mmol), heat to 85°C and stir and reflux for 24h.

[0041] Post-treatment: Pour the cooled reaction solution into water (100mL) and extract with dichloromethane (100mL×2), wash the organic phase twice with anhydrous MgSO 4 After drying, the filtrate was filtered to remove the solvent by a rotary evaporator to obtain a crude product. The crude product was separated and purified through a silica gel chromatography column (the effective length of the silica gel was 30 cm) using dichloromethane / petroleum ether (volume ratio 1:1) as the eluent to obtain the compound shown in formula III as...

Embodiment 2

[0072] Compounds FICBF-Se and FICBF-SeVi were prepared as described in Example 1. Wherein, in step (1), the added amount of the compound represented by formula II is 0.84 mmol, and the yield of the compound represented by formula III prepared is 57%. In step (3), the added amount of the compound represented by the formula VI is 0.44 mol, and the yield of the compound represented by the formula VI prepared is 53%. In step (4), the added amount of the compound represented by the formula V is 0.44 mol, and the yield of the compound represented by the prepared formula V is 37%.

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Abstract

The invention discloses an A-D-A type photovoltaic small molecule receptor taking indeno[1,2-b]fluorine as a core. Indeno[1,2-b]fluorine is taken as a central receptor unit, fluoro-substituted 3-(dicyano methylene)indigo ketone as a blocking receptor unit, and mono selenophen or vinyl selenophen as a phi bridge solution treated small molecule receptor material, wherein the A-D-A type photovoltaicsmall molecule receptor taking mono selenophen or vinyl selenophen as phi bridges are called as FICBF-Se and FICBF-SeVi respectively. The invention also provides a preparation method of the A-D-A typephotovoltaic small molecule receptor taking indeno[1,2-b]fluorine as the core. The A-D-A type photovoltaic small molecule receptor taking indeno[1,2-b]fluorine as the core, provided by the invention,applied to solar devices has excellent optical, electrochemical and photovoltaic performances.

Description

technical field [0001] The invention relates to the technical field of organic photovoltaic small molecules, in particular to an A-D-A type organic photovoltaic small molecule acceptor with indeno[1,2-b]fluorene as the core and its preparation method and application. Background technique [0002] Solar energy is an inexhaustible, inexhaustible, clean and non-polluting renewable energy for human beings. Making good use of solar energy is also one of the important ways to solve the fossil energy crisis. Compared with traditional inorganic silicon-based solar cells, organic solar cells have the advantages of light weight, low cost, solution processing, high mechanical flexibility, and large-area flexible devices, which have attractive application prospects. Organic polymer / small molecule solar cells have been developed by leaps and bounds in recent years. [0003] In recent years, organic solar cells (OSCs) have received more and more attention from researchers due to their ou...

Claims

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Application Information

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IPC IPC(8): C07D345/00H01L51/42H01L51/46
CPCC07D345/00H10K85/649H10K85/626H10K30/30Y02E10/549
Inventor 邱化玉张倩林志靖王兆龙徐欣
Owner HANGZHOU NORMAL UNIVERSITY
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