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Controlled bistability in a molecular non-porous crystalline materials as robust chemo-sensor at room temperature

AuthorsSánchez Costa, J.; Craig, G. A.; Roubeau, Olivier; Beavers, Christine M.; Teat, Simon J.; Aromí, Guillem
Issue Date2014
CitationICMM 2014
AbstractNanoporous materials have exceptional characteristics that confer them important potential technological applications such as molecular sieves, sensors, magnetism and catalysis. Those materials have recently experienced a renewed interest since the discovery of a new class of flexible porous materials, which contrast with the well-explored rigid porous materials. These materials defined as soft porous crystals may respond to external stimuli such as light, a magnetic field or even the interaction with some molecules, keeping their crystallinity and porosity intact. Moreover, spin-crossover (SCO) properties have been introduced in such porous materials with the aim of reaching room temperature applications. SCO involves a change in the electronic configurations of molecules by applying an external perturbation such as temperature, pressure, or light irradiation. Furthermore, SCO is a molecular phenomenon, which is accompanied by dramatic and readily detectable changes of macroscopic properties (color, crystal size and magnetism). In some cases, the central cavity of these ligands, based on the wellknown “bpp” moiety, is suited for accessing Fe(II) complexes exhibiting SCO, while the external groups can play other chemical or structural roles. In this presentation we described the research work concerning the sensor activity of a new non-porous SCO material that can act as a soft porous molecular framework in which the molecular bistability is associated to a solvent absorption-desorption process in a reversible way above room temperature. This work has a continuation research work focused on the nanopatterning and nano-structuration of such materials for further studying their exciting physicochemical properties. The controlled solvent exchange for this sample would without any doubt be of great benefit in many practical applications.
DescriptionResumen del trabajo presentado a la: "14th International Conference on Molecule-Based Magnets" celebrada en San Petersburgo (Rusia) del 5 al 9 de julio de 2014.-- et al.
Appears in Collections:(ICMA) Comunicaciones congresos
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