Luminescent coordination polymers (CPs) are known for their unique abilities to provide tunable emission processes originated at the interplay between their infinite inorganic and organic constituents combined in endless ways, thus yielding smart molecule-scaled materials to be processed as photodevices, sensors, optical storage systems or even logic gates. Nonetheless, most of these applications demand the occurrence of persistent luminescence to prevent background interference with the fluorescence signal. This is the reason why attention has been recently shifted to CPs exhibiting long-last- [a] 2155 (2007) from the University of the Basque Country. Her research has always been based on the use of computational techniques (both quantum and classical mechanics) to predict various types of molecular properties in the fields of organic, (bio)inorganic, and medicinal chemistry. Lately, her research has focused on the rational design and prediction of the magnetic and photoluminescence properties of new hybrid metal-organic materials. Antonio Rodríguez-Diéguez completed his PhD studies in Chemistry at the University of Granada in 2005. Since 2008, he has worked as Leading Researcher of different projects funded by the Junta de Andalucía (Spain) and, concurrently, he is Professor at the Inorganic Chemistry Department of the University of Granada. Over this period, his research interests have included crystal structure analysis by X-ray diffraction, the improvement of solvothermal methods, studies of magnetic and luminescence properties and, recently, the synthesis of metal-organic frameworks for therapeutic applications. Jose M. Seco received his degree in chemistry from University of the Basque Country (UPV/EHU) in 1990. In 1998, he completed his Ph.D. in chemistry in the laboratory of M. J. Gonzalez-Garmendia at the University of the Basque Country. Now he is a lecturer for Inorganic Chemistry in the UPV/EHU. In his current research, he studies single-molecule magnets and metal-organic frameworks with luminescence properties.
Eider San Sebastian holds a degree in biochemistry (2000) and a PhD in organic chemistry
This paper presents the findings of a research study of professors' profiles for the European Higher Education Area (EHEA) conducted in five spanish universities. Through the application of qualitative methods of inquiry, the perceptions of several groups of university professors over the principal teaching qualifications necessary for the coordination of higher education throughout the European Union have been obtained. Data analysis indicates a significant discrepancy between actual Spanish professors and those required by EHEA. It has also made possible the detailed description of teaching competency profiles that professors believe to be fundamental for the new functions demanded of them in the present changing social and educational situation.
A new cadmium/6-aminonicotinate-based coordination polymer (CP) with an unprecedented multicolored and long-lasting emission is reported. This material shows a blue fluorescence which rapidly turns to green persistent phosphorescence with a lifetime of nearly 1 s. Time-dependent density functional theory calculations revealed that electronic transitions arising from both first excited singlet and triplet states involving ligand-centered and ligand-to-metal charge-transfer mechanisms are responsible for such behavior.
The reaction of H(2)L (N,N'-dimethyl-N,N'-bis(2-hydroxy-3-methoxy-5-methylbenzyl)-ethylenediamine) with different copper salts, in methanol and using a H(2)L/Cu = 2 : 3 molar ratio, led to four new bis(μ-diphenoxo)-bridged Cu(3) complexes of general formula [{Cu(S)(μ-L)}(2)Cu(H(2)O)(2n)]X(2) (S = CH(3)OH, n = 1 and X = BF(4)(-) for (1) or ClO(4)(-) for (2); S = Br(3)(-) anion and n = 1 without any X species for (3); S = H(2)O, n = 0 and X = NO(3)(-) for (4)). The use in the same reaction conditions of 4,4'-bipyridine (4,4'-bipy) as connector led to the chain complex [{Cu(μ-4,4'-bipy)(0.5)(μ-L)}(2)Cu(H(2)O)(2n)](ClO(4))(2)·17H(2)O (5). The structure of the centrosymmetric trinuclear unit in (1)-(5) consists of two [Cu(L)] fragments connected through two phenoxo bridging groups to the central copper(II) ion giving rise to a linear arrangement of the copper(II) ions, where the ligand acts in a compartmental form wrapping the metal centre with a N(2)O(2) tetradentate bridging mode. The coordination polyhedron of the symmetrically related external copper atoms exhibits a geometry very close to square-pyramidal, whereas the central copper(II) atom displays either a tetragonally elongated octahedral geometry or a square-planar geometry. Owing to the steric hindrance promoted by the methoxy groups at the phenyl rings, the whole Cu(3) structure is not planar but folded along the line connecting the phenoxo bridging oxygen atoms of the same ligand. Temperature dependence of the magnetic susceptibility of complexes (1)-(5) was measured, showing strong antiferromagnetic interactions between the central and external atoms through the bis(μ-phenoxo) groups. DFT calculations were also performed (a) to support the experimental values of the coupling constant (J(1)) between the nearest-neighbouring copper atoms, (b) to determine the magnitude of the interactions between next-nearest copper(II) atoms (J(2)) and (c) to study magneto-structural correlations for this kind of bis(μ-diphenoxo) trinuclear copper(II) complex.
Cellular proliferation, metabolic and ultrastructural studies showed that the compounds 2>1>3 were highly active against L. infantum and L. braziliensis.
Solvothermally promoted assembly of the multifunctional 3‐amino‐4‐hydroxybenzoic acid ligand with the corresponding Eu salt gives rise to the formation of a porous metal‐organic framework with the general formula {[Eu5L6(OH)3(H2O)3] ⋅ 5DMF}n (1) that has been tested as heterogeneous catalyst for the cyanosilylation of a broad scope of ketones in solvent‐free conditions, using the lowest catalyst loading of 0.5 mol% ever reported, and exhibiting no leak and high recyclability.
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