Red‐Light‐Mediated Photoredox Catalysis Enables Self‐Reporting Nitric Oxide Release for Efficient Antibacterial Treatment
作者:Zhiqiang Shen、Shaoqiu Zheng、Shiyan Xiao、Ruan Shen、Shiyong Liu、Jinming Hu
DOI:10.1002/anie.202107155
日期:2021.9.6
near-UV visible light with low penetration and high phototoxicity. We report that coumarin-based NO donors with maximal absorbances at 328 nm can be activated under (deep) red-light (630 or 700 nm) irradiation in the presence of palladium(II) tetraphenyltetrabenzoporphyrin, enabling stoichiometric and self-reporting NO release with a photolysis quantum yield of 8 % via photoredox catalysis. This NO-releasing
一氧化氮 (NO) 作为许多生理过程的关键调节剂和有效的治疗剂。由于高浓度 NO 的毒性,NO 的局部递送对于实现目标治疗结果很重要。尽管光刺激代表了一种具有时空精度来介导 NO 释放的非侵入性工具,但许多光响应性 NO 释放分子只能对紫外线 (UV) 或近紫外线可见光做出反应,具有低渗透性和高光毒性。我们报告说,在钯(II)四苯基四苯并卟啉存在的情况下,在(深)红光(630 或 700 nm)照射下可以激活基于香豆素的 NO 供体,在 328 nm 处具有最大吸光度,从而实现化学计量和自我报告的 NO 释放通过光氧化还原催化的光解量子产率为 8%。铜绿假单胞菌体外生物膜和体内治疗皮肤脓肿。