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US 2018/0006228 A1Published application
Conductive polymers, the organic photovoltaic cell comprising the same, and the synthesis thereof
AssigneeDaegu Gyeongbuk Institute of Science and Technology
InventorsYoun Gu LEE, Hong Gi KIM
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Abstract
The present invention relates to a conductive polymer, the organic photovoltaic cell comprising the same, and the synthesis method of the same. The novel polymer, according to the present invention, displays more excellent optical properties and higher photoelectric conversion efficiency than the conventional RRa (regiorandom) polymer due to its symmetrical structure of quaterthiophene and benzothiadiazole substituted with fluorine.
Claims12
A polymer compound represented by formula 1 below;
- In formula 1, R is independently C1˜C30 straight or branched alkyl, C1˜C30 straight or branched alkoxy, or C6˜C30 aryl, wherein the alkyl, alkoxy, and aryl can be substituted with one or more C1˜C10 alkyl, hydroxyl, amino, or carboxy, and the alkyl, alkoxy, and aryl can independently contain one or more hetero atoms,
- X is independently H or F,
- N is an integer of 1˜500.
A method for preparing the polymer represented by formula 1, which comprises the following steps:
- (a) producing the compound represented by formula 2 having a symmetrical structure by reacting a quaterthiophene derivative and a benzothiadiazole derivative with the substitution of bromine and fluorine in the presence of a palladium catalyst;
- (b) producing the compound represented by formula 3 by reacting the compound represented by formula 2 with a brominating agent;
- and
- (c) reacting the compound represented by formula 3 with a bithiophene derivative in the presence of a palladium catalyst.
- Wherein, R is independently C1˜C30 straight or branched alkyl, C1˜C30 straight or branched alkoxy, or C6˜C30 aryl, wherein the alkyl, alkoxy, and aryl can be substituted with one or more C1˜C10 alkyl, hydroxyl, amino, or carboxy, and the alkyl, alkoxy, and aryl can independently contain one or more hetero atoms,
- X is independently H or F,
- N is an integer of 1˜500.
4 more elements
Dependencies are inferred from the claim text.