Nanowerk  September 11, 2023
A few MOFs which typically use strong acids as proton sources, display superprotonic conductivity. However, they are rare due to the instability of MOFs in highly acidic conditions. Researchers in South Korea have shown superprotonic conductivity using a moderately acidic guest, zwitterionic sulfamic acid (HSA), which was encapsulated in MOF-808 and MIL-101. HSA acted not only as a proton source but also as a proton-conducting medium due to its extensive hydrogen bonding ability and zwitterion effect. A new sustained concentration gradient method resulted in higher HSA encapsulation compared to conventional methods. The MOFs showed impressive superprotonic conductivity and maintained stability for 7 days… read more. TECHNICAL ARTICLEÂ
Graphical abstract. Credit: Angewandte Chemie International Edition, Volume 62, Issue 29 e202302376Â