Key Laboratory of Molecule Synthesis and Function Discovery (Fujian Province University), State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou 350108, China.
Beijing National Laboratory for Molecular Sciences, Beijing 100190, China.
ACS Macro Lett. 2022 Sep 20;11(9):1073-1078. doi: 10.1021/acsmacrolett.2c00418. Epub 2022 Aug 19.
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.
可见光调控的无金属聚合近年来引起了人们对高分子合成的极大关注。然而，在阳离子聚合中，很少有有机光催化剂表现出高效和严格的光控。在此，我们介绍了一种单磷鎓掺杂多环芳烃作为有机光催化剂，它具有高可调性、宽氧化还原窗口、长激发态寿命和在乙烯基醚阳离子可逆加成-断裂链转移聚合中优异的时间控制等特点。还讨论了催化剂的催化性能与其光物理和电化学性能之间的关系。
