"Crystalline materials based on lanthanide-sulfonate coordination polymers"

RICHARD FERNANDO D'VRIES; GERMÁN E. GOMEZ; DIEGO LIONELLO; IHOSVANY CAMPS; MARÍA CECILIA FUERTES; GALO J. A. A. SOLER-ILLIA; JAVIER ELLENA

San Luis

Congreso; XII Reunion Anual de la Asociación Argentina de Cristalografía; 2016

Universidad Nacional de San Luis

Disulfonaphthalene molecules to form compounds with different structures, dimensionalities and topologies, which gives rise to interesting materials with very different properties in catalysis,[1] gas absorption,[2] luminescence,[3] magnetism and conductivity.[4] In this work we present a series of compounds synthetized in optimized hydrothermal conditions from lanthanide metals, 3-hydroxinaphthalene-2,7-disulfonate(3-OHNDS) and 1,10-phenanthroline (phen) as ligands. Three crystalline phases were identified with formula [Eu(3-OHNDS)(Phen)(H2O)2]?3H2O (Phase 1-Eu), (C44H34N4O16S4Eu2) (Phase 2-Eu) and [Ln2(3-OHNDS)2(Phen)2(H2O)]?3H2O (Phase 3-Ln) where Ln = Tb, Dy, Ho, Er and Yb. The compounds were characterized by different techniques such as FT-IR, thermal analysis, single crystal and powder X-ray diffraction. Nanoidentation on single crystals was carried out in order to find relationships between structural and mechanical properties. Moreover, an exhaustive characterization of the PL properties was performed, involving excitation-emission experiments. Finally, the sensing of aromatic molecules when the compound interacts with naphthalene molecules was studied, and it was determined that these compounds are promising materials for the elaboration of chemical sensors.Key words: Lanthanide Coordination-Polymer; Nanoidentation; Photoluminiscence; Chemical Sensor. [1] D?Vries, R. F.; Iglesias, M.; Snejko, N.; Gutiérrez-Puebla, E.; Monge, M. A.Inorg. Chem. 51, (21), (2012), 11349-11355.[2] Gándara, F.; Gutiérrez-Puebla, E.; Iglesias, M.; Snejko, N.; Monge, M. A. Cryst. Growth Des. 10, (1), (2009), 128-134.[3] D´Vries, R. F.; Alvarez-Garcia, S.; Snejko, N.; Bausa, L. E.; Gutierrez-Puebla, E.; de Andres, A.; Monge, M. A. J. Mater. Chem. C. 1, (39), (2013), 6316-6324.[4] Horike, S.; Umeyama, D.; Kitagawa, S. Acc. Chem. Res. 46, (11), (2013), 2376-2384.