Optimization of proton conductivity of Zr-based metal-organic frameworks by peripheral substitution of porphyrin ligands
Provider: Grantová agentura ČR
Programme: Standardní projekty
Implementation period: 01.01.23 - 31.12.25
Workplace:
Fakulta chemicko-technologická - Laboratoř chemie pevných látek
Investigator: Melánová KláraTeam member: Plecháček Tomáš | Beneš Ludvík | Kutálek Petr
Description:
Proton conductors are fundamental part of proton-exchange membrane fuel cells ? devices that transform energy stored in hydrogen to electricity. For this reason, the developement of efficient proton conductors has become one of the main challanges of materials science. The project aims at the investigation of Zr(IV) metal-organic frameworks based on beta-substituted derivatives of 5,10,15,20-tetrakis(4-carboxyphenyl)porphyrin. The goal of the project is to introduce groups with the function of proton donors (phosphonates, phosphinates, sulfonates) or acceptors (amines) into the structure of MOFs by methods of porphyrin beta-substitution and thus maximize proton conductivity of the materials. Except of that, other ways of proton conductivity enhancement will be explored, e.g. postsynthetic modification or inclusion of suitable small molecules (histidine, imidazole, trifluoroacetic acid etc.). We believe that betasubstitution of porphyrin ligands represents a unique strategy for preparatation of functional MOFs and opens door to new applications.
Proton conductors are fundamental part of proton-exchange membrane fuel cells ? devices that transform energy stored in hydrogen to electricity. For this reason, the developement of efficient proton conductors has become one of the main challanges of materials science. The project aims at the investigation of Zr(IV) metal-organic frameworks based on beta-substituted derivatives of 5,10,15,20-tetrakis(4-carboxyphenyl)porphyrin. The goal of the project is to introduce groups with the function of proton donors (phosphonates, phosphinates, sulfonates) or acceptors (amines) into the structure of MOFs by methods of porphyrin beta-substitution and thus maximize proton conductivity of the materials. Except of that, other ways of proton conductivity enhancement will be explored, e.g. postsynthetic modification or inclusion of suitable small molecules (histidine, imidazole, trifluoroacetic acid etc.). We believe that betasubstitution of porphyrin ligands represents a unique strategy for preparatation of functional MOFs and opens door to new applications.
