电化学介导的原子转移激进聚合,由交流电驱动
Francesco De Bon1, Marco Fantin2, Vanessa A Pereira1
1Centre for Mechanical Engineering, Materials and Processes (CEMMPRE), ARISE, Department of Chemical Engineering, University of Coimbra, Rua Sílvio Lima, Pólo II, 3030-790, Coimbra, Portugal.
Angewandte Chemie (International ed. in English)
|April 22, 2024
概括
交替电流 (AC) 电解通过再生铜激活器来增强电化学介导的原子转移激素聚合 (eATRP). 这种方法可以通过高保真性和强大的电极对各种单体进行受控的聚合.
科学领域:
- 电化学 电化学 电化学
- 聚合物化学 聚合物化学
- 有机合成 有机合成
背景情况:
- 交流电流 (AC) 和脉冲电解在电气 (有机) 合成中提供了优势.
- 原子转移基聚合 (ATRP) 是一种受控聚合技术.
- 铜 (Cu) 复合物是ATRP中常见的激活剂.
研究的目的:
- 研究使用交流电解在电化学介导ATRP (eATRP) 中的应用.
- 通过交流电解和化学方法探索铜激活器的双重再生.
- 评估交流电解在聚合各种单体中的效率和范围.
主要方法:
- 采用形,三角形和正方形波交流电解.
- 使用Cu0电极进行激活器再生和作为补充激活器 (SARA ATRP).
- 使用多种ATRP催化剂和11种不同的单体对交流电解进行测试.
主要成果:
- 与DC电解或单独SARA ATRP相比,交流电解促进了烯酸盐的更快,更可控的聚合.
- 在各种介质 (从水到散装) 中成功聚合了11个单体.
- 在一系列催化剂活动中有效的聚合,从低到高.
- 链延长实验证实了区块共聚合物的高链端忠实性.
- 电极表现出强度,支持至少15次连续的聚合.
结论:
- 交流电解是eATRP的一种多功能和有效的技术.
- 双重再生机制提高了聚合控制和效率.
- 这种方法对各种单体和催化剂系统具有广泛的适用性.
- 坚固的Cu0电极使重复聚合成为可能,突出显示了其实用性.
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