一种邻位苯甲酸甲酯-烷基噻吩共聚物及其制备方法

By using the DA structure and steric hindrance design of the ortho-methyl benzoate-alkylthiophene copolymer, the instability of doped polythiophene in air was solved, achieving good air stability and conductivity retention.

CN122127581BActive Publication Date: 2026-07-17CHAIN WALK NEW MATERIAL TECH (GUANGZHOU) CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHAIN WALK NEW MATERIAL TECH (GUANGZHOU) CO LTD
Filing Date
2026-05-08
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Doped polythiophene is unstable in air; oxygen and water molecules can cause a decrease in conductivity, limiting its application in devices that require long-term exposure to the atmospheric environment.

Method used

The stability of the doped state is improved by using methyl benzoate-alkylthiophene copolymer, which disrupts the coplanarity of the molecular chain through electron donor-electron acceptor (DA) structure and steric hindrance.

Benefits of technology

The methyl benzoate-alkylthiophene copolymer retains a conductivity of over 75% after hot air treatment, significantly improving its air stability.

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Abstract

本发明公开了一种邻位苯甲酸甲酯‑烷基噻吩共聚物及其制备方法，属于噻吩共聚物技术领域，该共聚物的结构式如 所示，其中的R选自碳原子数为4~12的烷基中一种。该邻位苯甲酸甲酯‑烷基噻吩共聚物具有电子给体‑电子受体（D‑A）结构，且苯甲酸甲酯通过邻位、间位与烷基噻吩连接，其空间位阻在一定程度上扰乱分子链的完美共面性，而这种适度的无序有利于缓解掺杂剂的氧化、丢失，提高其稳定性。
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