Ayoub Ghada, Arhangelskis Mihails, Zhang Xuan, Son Florencia, Islamoglu Timur, Friščić Tomislav, Farha Omar K
Department of Chemistry, McGill University, Montreal, Quebec, H3A 0B8, Canada.
International Institute of Nanotechnology, Department of Chemistry, Northwestern University, 2145 Sheridan Rd, Evanston, IL 60208, USA.
Beilstein J Nanotechnol. 2019 Dec 9;10:2422-2427. doi: 10.3762/bjnano.10.232. eCollection 2019.
We demonstrate a microporous metal-organic framework NU-400 based on a 2,7-disubstituted pyrene linker as a highly efficient photosensitizer for generating singlet oxygen and subsequent oxidative degradation of chemical warfare agents (CWAs). The high activity of NU-400 permits photocatalytic conversion of the 2-chloroethyl ethyl sulfide (CEES) mustard gas simulant into a benign sulfoxide derivative, in air, with less than 15 minutes' half-life. This is a considerable improvement to NU-1000, based on a 1,3,6,8-tetrasubstituted pyrene unit, demonstrating how variation of the substitution pattern of a metal-organic framework linker permits modification of its photoactive behavior.
我们展示了一种基于2,7-二取代芘连接体的微孔金属有机框架NU-400，它是一种高效的光敏剂，用于产生单线态氧并随后对化学战剂（CWA）进行氧化降解。NU-400的高活性使得在空气中能将2-氯乙基乙基硫醚（CEES）芥子气模拟物光催化转化为良性的亚砜衍生物，半衰期不到15分钟。这相对于基于1,3,6,8-四取代芘单元的NU-1000有了相当大的改进，表明金属有机框架连接体取代模式的变化如何允许对其光活性行为进行修饰。
