Sensing properties, energy transfer mechanism and tuneable particle size processing of luminescent two-dimensional rare earth coordination networks

GODOY, AGUSTIN ALEJANDRO; GÓMEZ, GERMÁN; KACZMAREK, ANNA M. MARTA; VAN DEUN, RIK; FURLONG, OCTAVIO J; GÁNDARA, FELIPE; MONGE, ANGELES; BERNINI, MARIA CELESTE; NARDA, GRISELDA

J. Mater. Chem. C

ROYAL SOC CHEMISTRY

Año: 2017

2050-7526

A new isostructural family of layered coordination networks (CNs) based on rare earth elements and mixed ligands, were hydrothermally synthesized and fully characterized. The set of compounds with a general formula [REE(Salicylate)(Succinate)0.5(H2O)] (with REE = Ho or Y) belongs to the monoclinic P21/c space group. Top-down methods were implemented in order to obtain nano-sized CN particles for potential applications in thin films fabrication. The solid state photoluminescence (SSPL) of the Eu, Tb and Eu/Tb doped samples were explored in terms of excitation/emission spectra, lifetime values and quantification of light emission by calculation of the CIE chromaticites. Measurement of the triplet state energy of the ligand at low temperature was carried out by analysing the SSPL of the Y-based compound; energy transfer pathways is analysed. According to the high performance as green emitter of the Tb-doped compound, thermal and chemical sensing assays were carried out.