Reactive Chlorine Capture by Dichlorination of Alkene Linkers in Metal–Organic Frameworks

• DOI: 10.1021/acsami.2c17966
• Publication Date: 2022-11-22T21:31:35Z
• Authors: Tyler J. Azbell; Ruth M. Mandel; Jung-Hoon Lee; Phillip J. Milner
• Keywords: Alkene

Chlorine (Cl2) is a toxic and corrosive gas that both an essential reagent in industry potent chemical warfare agent. Materials can strongly bind Cl2 at low pressures are for industrial civilian personal protective equipment (PPE). Herein, we report the first examples of irreversible capture via dichlorination alkene linkages Zr-based metal–organic frameworks. Frameworks constructed from fumarate (Zr-fum) stilbene (Zr-stilbene) linkers retain long-range order accessible porosity after dichlorination. In addition, energy-dispersive X-ray spectroscopy reveals even distribution Cl throughout materials capture. uptake experiments reveal high (>10 wt %) partial (<100 mbar), particularly Zr-fum. contrast, traditional porous carbons mostly display reversible capture, representing continued risk to users exposure. Overall, our results support represents new pathway reactive opening opportunities binding this irreversibly PPE.