Patent · US Active

Method of making a pyrrolo bisthiazole homopolymer

US10927214B2 · kind B2 · utility

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3Claims

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Assignee

QATAR FOUNDATION FOR EDUCATION, SCIENCE AND COMMUNITY DEVELOPMENT · QA

Inventors

Mohammed Al-Hashimi · Doha, QA
Hugo Bronstein · London, GB

Key dates

Filing date	Mar 22, 2018
Grant date	Feb 23, 2021
Priority date	—
Expiry date	Mar 22, 2038

Classification

Technology area (CPC H)Electricity
CPC primaryH10K30/50
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The method of making a pyrrolo bisthiazole homopolymer starts with dissolving a dibrominated pyrrolo[3,2-d:4,5-d′]bisthiazole monomer having the formula: where R is an alkyl group, in anhydrous tetrahydrofuran (THF). Then, the solvated monomer is treated with 1 equivalent of a Turbo-Grignard reagent complex having the formula iPrMgCl.LiCl at 0° C. to form a reaction mixture. The reaction mixture is stirred for 1 hour at room temperature, and after stirring, the reaction mixture is refluxed for 24 hours. A conjugated homopolymer product having the formula: where n is the number of repeating units of pyrrolo[3,2-d:4,5-d′]bisthiazole, is recovered from the reaction mixture. The PBTz-based homopolymers showed broad absorption from 450 to 850 nm in thin film and excellent photochemical and thermal stability, making the polymers suitable for lightweight, low cost plastic electronic devices.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.