Monophosphoniums as Effective Photoredox Organocatalysts for Visible Light-Regulated Cationic RAFT Polymerization,ACS Macro Letters

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Monophosphoniums as Effective Photoredox Organocatalysts for Visible Light-Regulated Cationic RAFT Polymerization
ACS Macro Letters ( IF 5.1 ) Pub Date : 2022-08-19 , DOI: 10.1021/acsmacrolett.2c00418
Zan Yang ₁ , Jianxu Chen ₁ , Saihu Liao _{1,

2}

Affiliation

Visible light-regulated metal-free polymerizations have attracted considerable attention for macromolecular syntheses in recent years. However, few organic photocatalysts show high efficiency and strict photocontrol in cationic polymerizations. Herein, we introduce monophosphonium-doped polycyclic arenes as an organic photocatalyst, which features the high tunability, broad redox window, long excited state lifetime, and excellent temporal control in the cationic reversible addition–fragmentation chain transfer polymerization of vinyl ethers. A correlation of the catalytic performance and the photophysical and electrochemical properties of photocatalysts is also discussed.

中文翻译：

单鏻作为可见光调节阳离子 RAFT 聚合的有效光氧化还原有机催化剂

近年来，可见光调控的无金属聚合在大分子合成方面引起了相当大的关注。然而，很少有有机光催化剂在阳离子聚合中表现出高效率和严格的光控制。在此，我们介绍了单鏻掺杂的多环芳烃作为有机光催化剂，该催化剂在乙烯基醚的阳离子可逆加成-断裂链转移聚合中具有高可调性、宽氧化还原窗口、长激发态寿命和出色的时间控制性。还讨论了光催化剂的催化性能与光物理和电化学性质的相关性。

更新日期：2022-08-19

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