Air oxidation of sulfur mustard gas simulants using a pyrene-based metal–organic framework photocatalyst

oleh: Ghada Ayoub, Mihails Arhangelskis, Xuan Zhang, Florencia Son, Timur Islamoglu, Tomislav Friščić, Omar K. Farha

Format: Article
Diterbitkan: Beilstein-Institut 2019-12-01

Deskripsi

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.