High proton conductivity behavior in a 2D metal sulfite constructed from a histidine ligand

Abstract

In the presence of the amino acid histidine, an inorganic–organic hybrid metal sulfite (compound 1), has been prepared under hydrothermal conditions. Compound 1 shows a high proton conductivity of, approximately 10−3 S cm−1 at 348 K and 98% RH.

Proton Conductive Zr-Phosphonate UPG-1—Aminoacid Insertion as Proton Carrier Stabilizer

“…To the best of our knowledge, this is the first time that an amino acid is encapsulated in a MOF to play the role of a hosted proton carrier. Only quite few proton-conducting amino acid-based MOFs have been reported with such bio-organic molecules, being used as primary building units [ 37 , 38 , 39 ]. Finally, water adsorption capacity of UPG-1 and Lys@UPG-1 was investigated using a combination of experimental and simulation approaches (Grand Canonical Monte Carlo—GCMC), assessing the hydrophobic/hydrophilic character of both solids in order to understand their associated proton conduction and to identify plausible proton-conducting pathways.…”

Two histidine-templated metal phosphate-oxalates: solvent-free synthesis, luminescence, and proton-conducting properties

“…A number of metal phosphates, phosphites, sulfates, sulfites, borates, and halides, have been constructed under the structure-directing effect of amino acids. 7 As far as we know, amino acid-templated MPOs have been rarely investigated.…”