RT Conference Proceedings
T1 New multifunctional sulfonato-containing metal phosphonates proton conductors
A1 Salcedo, Inés R.
A1 Bazaga-García, Montse
A1 Pérez-Colodrero, Rosario Mercedes
A1 Xanthopoulos, Konstantinos
A1 Demadis, Konstantinos D.
A1 Stock, Norbert
A1 Cabeza-Díaz, Aurelio
A1 Ramírez-Losilla, Enrique
A1 Olivera-Pastor, Pascual
K1 Protones
AB Anchoring of acidic functional groups to organic linkers acting as ligands in metal phosphonates has been demonstrate to be a valid strategy to develop new proton conductor materials, which exhibit tunable properties and are potentially applicable to proton exchange membranes, such as those used in PEMFCs [1,2]. In this work, the structural and proton conductivity properties of several families of divalent and trivalent metal amino-sulfophosphonates are presented. The chosen ligand, (H2O3PCH2)2-N-(CH2)2-SO3H, was reacted with the appropriate metal salt using highthrough-put screening and/or microwave-assisted synthesis. Different crystal structures haven been solved displaying a variety of metal ligand coordination modes, in whose frameworks acidic groups contribute to create strong H-bond networks; together with lattice and bound water molecules. Proton conductivity values oscillate between 10-4 and 10-2 S.cm-1, at 80 ºC and 95 % relative humidity, most of them showing activation energies characteristic of a Grotthuss-type proton transport mechanism.
YR 2018
FD 2018-10-01
LK https://hdl.handle.net/10630/16550
UL https://hdl.handle.net/10630/16550
LA eng
NO Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech.MINECO: MAT2016-77648-RJunta de Andalucía: P-12-FQM-1656 y FQM-113
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 23 ene 2026