2024-03-28T21:29:59Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/1488422017-07-05T11:38:16Zcom_10261_52707com_10261_5com_10261_31com_10261_3col_10261_52715col_10261_410
Gold, silver and copper luminescent molecular materials with mesomorphic properties
Elduque, Anabel
Giménez, Raquel
Iguarbe, Verónica
Cored, Jorge
Barberá, Joaquín
Serrano, José Luis
Gobierno de Aragón
European Commission
Ministerio de Economía y Competitividad (España)
Universidad de Zaragoza
Resumen del trabajo presentado a la 20th International Conference on Solid Compounds of Transition Elements, celebrada del 11 al 15 de abril de 2016 en Zaragoza (España).
Cyclic trinuclear complexes of the gold group are unique molecular materials that contain a planar or nearly planar nine-membered metallacycle. Increasing interest has been taken in them owing to their chemical and luminescent properties. Their emission spectra depends on the arrangement of the molecules in the solid state, which can involve intermolecular metallophilic interactions, and these can be easily influenced by external factors such as temperature, ions, solvents, and so forth. All these studies have opened new perspectives for the development of new stimuli responsive luminescent materials for sensors, organic electronics or biomedicine. We report herein the synthesis and characterization of novel gold, silver and copper cyclic trinuclear pyrazolate complexes able to self-assemble in columnar phases. In particular, gold and silver complexes display thermotropic columnar liquid crystal phases at high temperatures which have been characterized by POM, DSC and XRD. The luminescent properties have been
studied by luminescence spectroscopy. Gold and copper compounds show phosphorescence in the visible-near IR region at room temperature. It has been observed that luminescent behavior is temperature sensitive with unique color changes (thermochromism), and chemically sensitive, leading to new stimuli-responsive materials.
2017-04-26T07:45:40Z
2017-04-26T07:45:40Z
2016
2017-04-26T07:45:40Z
comunicación de congreso
SCTE (2016)
http://hdl.handle.net/10261/148842
http://dx.doi.org/10.13039/501100000780
http://dx.doi.org/10.13039/501100003329
http://dx.doi.org/10.13039/501100007041
http://dx.doi.org/10.13039/501100010067
eng
Sí
closedAccess