RT Journal Article
T1 From light to heavy alkali metal tetraphosphonates (M = Li, Na, K, Rb, Cs): cation size-induced structural diversity and waterfacilitated proton conductivity
A1 Salcedo, Inés R.
A1 Pérez-Colodrero, Rosario Mercedes
A1 Bazaga-García, Montse
A1 Vasileiou, Antonia
A1 Papadaki, Maria
A1 Olivera-Pastor, Pascual
A1 Infantes-Molina, Antonia
A1 Ramírez-Losilla, Enrique
A1 Mezei, Gellert
A1 Cabeza-Díaz, Aurelio
A1 Demadis, Konstantinos D.
K1 Conductividad eléctrica
K1 Polímeros organometálicos
K1 Baterías de estado sólido
AB A family of alkali metal-based frameworks containing the tetraphosphonate ligand hexamethylenediamine-N,N,N′,N′-tetrakisIJmethylenephosphonic acid), HDTMP, is reported. A cation size-induced structural diversity,from monodimensional solids (Li+ and Na+) through layered (K+) to pillared-layered (Rb+ and Cs+)structures, was found. The proton conductivity properties of the Li compounds (hydrated and dehydrated)are reported and the influence of dehydration/rehydration processes in enhancing proton transfer processesis highlighted. Reversible changes in the dimensionality occurred upon full dehydration/rehydrationwith minor rearrangements in the framework, implying variations in the Li+–ligand connectivity but preservingthe tetracoordination of the metal ion. The reversibly dehydrated–rehydrated sample displayed thehighest proton conductivity (5 × 10−3 S cm−1 at 80 °C and 95% RH), a behavior attributed to reversible formation/reformation of P–OIJH)–Li bonds that, in turn, provoked changes in the acidity of acid groups andwater mobility in the temperature range of impedance measurements.
PB The Royal Society of Chemistry
YR 2018
FD 2018-09
LK https://hdl.handle.net/10630/20987
UL https://hdl.handle.net/10630/20987
LA eng
NO Salcedo, I., Colodrero, R., Bazaga-García, M., Vasileiou, A., Papadaki, M., Olivera-Pastor, P., Infantes-Molina, A., Losilla, E., Mezei, G., Cabeza, A., & Demadis, K. (2018). From light to heavy alkali metal tetraphosphonates (M = Li, Na, K, Rb, Cs): cation size-induced structural diversity and water-facilitated proton conductivity. CrystEngComm, 20(47), 7648–7658. https://doi.org/10.1039/C8CE01351A
NO Proyecto MAT2016-77648-R del ministerio y proyecto P12-FQM-1656 de la Junta de Andalucía Ministerio de Economía y Competitividad por el contrato Ramon y Cajal (RyC2015-17870).
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 20 ene 2026