RT Conference Proceedings
T1 Proton conductivity and luminiscence properties of lanthanide aminotriphosphonates
A1 Bazaga-García, Montse
A1 Angeli, Giasemi K.
A1 Papathanasiou, Konstantinos E.
A1 Salcedo, Inés R.
A1 Olivera-Pastor, Pascual
A1 Losilla, Enrique R.
A1 Choquesillo-Lazarte, Duane
A1 Hix, Gary B.
A1 Cabeza-Díaz, Aurelio
A1 Demadis, Konstantinos D.
K1 Polímeros
K1 Fotopolímeros
AB Metal phosphonates are multifunctional solids with tunable properties, such as internal H-bond networks, and high chemical and thermal stability [1].In the present work, we describe the synthesis, structural characterization, luminescent properties and proton conduction performance of a new family of isostructural cationic compounds with general formula [Ln(H4NMP)(H2O)2]Cl·2H2O [Ln = La3+, Pr3+, Sm3+, Gd3+, Tb3+, Dy3+, Ho3+, H6NMP = nitrilotris(methylphosphonic acid)]. These solids are formed by positively charge layers, which consist of isolated LnO8 polyhedra and bridge chelating NMP2- ligands, held apart by chloride ions and water molecules. This arrangement result in extended interlayer hydrogen networks with possible proton transfer pathways.The proton conductivity of Gd3+ sample, selected as prototype of the series, was measured. In the range between range 25º and 80 ºC, the conductivity increase with the temperature up to a maximum value of 3.10-4 S·cm-1, at relative humidity of 95 %. The activation energy obtained from the Arrhenius plot (Figure 1) is in the range corresponding to a Grotthuss transfer mechanism.
YR 2016
FD 2016
LK http://hdl.handle.net/10630/11673
UL http://hdl.handle.net/10630/11673
LA eng
NO Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech.               FQM-1656; MAT2013-41836-R;
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 19 ene 2026