Superprotonic Conductivity in Metal-Organic Framework viaPost-synthetic Modification with Urea

摘要

In recent years,metal-organic frameworks (MOFs) are emerging as a new platform forsolid-state proton conductors (SSPCs).The promising strategy for highly proton conductiveMOFs is the use of strong acid species (e.g.HCl,H2SO4,and H3PO4) in a part of theframework,as a guest molecule or both.1 However,acidic species are detrimental to thecoordination bond in MOFs,thus limiting the scope of this approach.Although there areseveral efforts to use mild moieties/molecules such as (-OH),(-NH2),water,and imidazole,the proton-conducting performance can be still improved.2 To the best of our knowledgesuperprotonic conductivity without acid remains a challenge.