Milano, Italy
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Cariati E.,Polytechnic of Milan | Cariati E.,CNR Institute of Molecular Science and Technologies | Botta C.,CNR Institute for Macromolecular Studies | Danelli S.G.,Polytechnic of Milan | And 8 more authors.
Chemical Communications | Year: 2014

The unexpected and acido-triggered reversible luminescence and nonlinear optical properties of (2-pyrene-1-yl-vinyl)pyridine, a simple and highly transparent chromophore, are studied both in solution and in the solid state. Remarkably, for the first time the acidomodulation of the NLO response of a poled thin film is reported. This journal is © the Partner Organisations 2014.


Cariati E.,University of Milan | Cariati E.,CNR Institute of Molecular Science and Technologies | Dragonetti C.,University of Milan | Dragonetti C.,CNR Institute of Molecular Science and Technologies | And 7 more authors.
Chemical Communications | Year: 2014

Diphenyl-(4-{2-[4-(2-pyridin-4-yl-vinyl)-phenyl]-vinyl}-phenyl)-amine (DPVPA) constitutes a novel acido-triggered reversible luminescent and nonlinear optical switch. Remarkably, for the first time the Electric-Field Induced Second Harmonic generation (EFISH) technique is used to reveal a protonation-deprotonation NLO contrast. This journal is © The Royal Society of Chemistry.


Colombo A.,University of Milan | Dragonetti C.,University of Milan | Righetto S.,University of Milan | Roberto D.,University of Milan | And 7 more authors.
Journal of Materials Chemistry | Year: 2012

Two new ligands L n: N,N-dibutyl-(4,5-diazafluorenyl-9-ylidene- penta-1,3-dienyl)-amine (L 2) and 9-[(1-azulenyl)methylene]-4,5- diazafluorene (L 3), along with the related Zn(ii) complexes with ancillary ligands of different electron withdrawing strengths ([Zn(CH 3CO 2) 2L n], [Zn(CF 3CO 2) 2L n] and [Zn(CF 3SO 3) 2L n]) were prepared and characterized. Their remarkable second-order NLO properties were investigated using the EFISH technique. The μβ 1.91 value of [Zn(CF 3SO 3) 2L 2] is strongly dependent on concentration, reaching, to our knowledge, the highest value reported for a Zn(ii) complex. © 2012 The Royal Society of Chemistry.


Cariati E.,Polytechnic of Milan | Lucenti E.,UdR INSTM di Milan | Lucenti E.,CNR Institute of Molecular Science and Technologies | Botta C.,CNR Institute for Macromolecular Studies | And 3 more authors.
Coordination Chemistry Reviews | Year: 2015

The continuous search for hybrid inorganic-organic compounds to be used in a variety of applications points obviously to the abundant, cheap, and environmental friendly copper. Cu(I) complexes exhibit a high structural diversity and are emissive with several classes of ligands with properties varying markedly with structure and environment. Solid state materials that display reversible stimuli-responsive emission are attracting considerable attention because of their basic science interest and potential applications in sensors, displays, and memory fields.While the photochemical and photophysical properties of Cu(I) complexes and clusters have been extensively studied, their optoelectronic characterization in view of second order non linear optical and electroluminescent applications has been performed more recently. However, the excellent results so far obtained in studies concerning OLED devices based on some highly stable Cu(I) complexes have proved the great potentiality of these materials in low cost flat panel displays and solid state lighting technologies.This review gathers the literature concerning stimuli responsive, electroluminescent and second order non linear optical studies on Cu(I) compounds published up to late 2014. © 2015 Elsevier B.V.

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