RT Journal Article
T1 Multifunctional lanthanum tetraphosphonates: Flexible, ultramicroporous and proton-conducting hybrid frameworks
A1 Pérez-Colodrero, Rosario Mercedes
A1 Olivera-Pastor, Pascual
A1 Losilla, Enrique R.
A1 García-Aranda, Miguel Ángel
A1 León-Reina, Laura
A1 Papadaki, M.
A1 McKinlay, Alistair C.
A1 Morris, Russell E.
A1 Demadis, Konstantinos D.
A1 Cabeza-Díaz, Aurelio
K1 Química inorgánica
AB A new flexible ultramicroporous solid, La(H5DTMP)·7H2O (1), has been crystallized at room temperature using the tetraphosphonic acid H8DTMP, hexamethylenediamine-N,N,N′,N′-tetrakis(methylenephosphonic acid). Its crystal structure, solved by synchrotron powder X-ray diffraction, is characterised by a 3D pillared open-framework containing 1D channels filled with water. Upon dehydration, a new related crystalline phase, La(H5DTMP) (2) is formed. Partial rehydration of 2 led to La(H5DTMP)·2H2O (3). These new phases contain highly corrugated layers showing different degrees of conformational flexibilityof the long organic chain. The combination of the structural study and the gas adsorption characterization (N2 and CO2) suggests an ultramicroporous flexible framework. NO isotherms are indicative of a strong irreversible adsorption of NO within the pores. Impedance data indicates that 1 is a proton-conductor with a conductivity of 8 × 10−3 S cm−1 at 297 K and 98% of relative humidity, and an activation energy of 0.25 eV.
PB The Royal Society of Chemistry
YR 2012
FD 2012
LK https://hdl.handle.net/10630/21039
UL https://hdl.handle.net/10630/21039
LA eng
NO Dalton Trans., 2012, 41, 4045–4051
NO Proyecto nacional MAT2010-15175 (MICINN, España)
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 20 ene 2026