On May 18, from the Yang Xiaoniu research group of Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, it was learned that "a poly (3-butylthiophene) containing functional end groups and its preparation method" invented by scientific researchers was authorized by the State Intellectual Property Office.
Poly (3alkylthiophene) has been a research hotspot in polymer semiconductor devices and other fields in recent years due to its excellent optoelectronic and processing properties. With the deepening of research, the scientific research value of poly (3butylthiophene) has gradually been discovered, especially its research results in organic polymer solar cells and semiconductor / insulator composite materials have caused this field. Wide attention. However, mechanical properties, thermal stability, and some self-defects of conjugated polymers severely restrict the further development of poly (3butylthiophene) research and application. In order to obtain materials with more comprehensive properties, research on composite materials based on poly (3butylthiophene) is imminent. Among them, the copolymer based on poly (3butylthiophene) has great potential, because it is not only expected to organically combine the excellent properties of poly (3butylthiophene) and other polymer materials, but also effectively control the nano-microstructure of the composite material through chemical bonds. Structure, which will lay a good foundation for the application of such materials in the fields of optoelectronic devices and so on. How to ensure the molecular weight, molecular weight distribution, and regional regularity of the poly (3butylthiophene) block while obtaining the copolymer also brings new challenges to this work.
With the strong support of the National Fund Committee and the Chinese Academy of Sciences, Yang Xiaoniu ’s project combined a variety of poly (3butylthiophene) containing functional end groups. By using selective catalysts, the regional regularity of poly (3butylthiophene) was regulated. Keep above 95%. And by controlling the reaction conditions, the molecular weight of the polymer can be adjusted in the range of 4,000 to 20,000, and the polydispersity coefficient of the polymer can be kept within 1.1. At the same time, this poly (3butylthiophene) end group carries olefin, hydroxyl or halogen groups commonly used in organic polymer synthesis, and can be widely used in atom transfer radical polymerization, reversible addition-fragmentation chain transfer polymerization, nitrogen In the fields of living radical polymerization and ring-opening shift polymerization such as oxygen-stabilized free radical polymerization, and controlled ion polymerization, various block copolymers based on poly (3butylthiophene) have been prepared.
This invention introduces functional end groups that are easy to undergo copolymerization while maintaining the performance of poly (3butylthiophene), and it opens a new page for the synthesis and performance research of poly (3butylthiophene) based composite materials.
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