Search results for: Sergio Tamburini

Items from 1 to 12 out of 12 results

article

Wollastonite-diopside-carbon composite foams from a silicone resin and inorganic fillers

Laura Fiocco, Stefano Agnoli, Danilo Pedron, Michele Secco, more

Ceramics International > 2018 > 44 > 1 > 931-937

A novel multiphasic ceramic composite was developed in the form of highly porous open-celled foams, starting from a silicone-based mixture, incorporating micro-sized fillers and fired in N₂ atmosphere. Highly homogeneous mixtures were first foamed at 350°C, in air, and later fired at 1100°C. The process yielded a final ceramic with two silicate phases (wollastonite, CaSiO₃, and diopside, CaMgSi₂O₆...

article

Geopolymer matrix for fibre reinforced composites aimed at strengthening masonry structures

Sergio Tamburini, Marco Natali, Enrico Garbin, Matteo Panizza, more

Construction and Building Materials > 2017 > 141 > C > 542-552

The paper presents the assessment of a metakaolin-slag-sodium-silicate GeoPolymer (GP) grout as a matrix for bonding four bidirectional meshes made of basalt, glass, carbon fibres and two unidirectional ultra-high tensile strength steel fabrics to soft mud and strong extruded clay bricks for strengthening purposes. A detailed chemical/physical characterization of the geopolymer is given, evidencing...

article

Multifunctional Cu²⁺‐montmorillonite/epoxy resin nanocomposites with antibacterial activity

Alessandra Bartolozzi, Roberta Bertani, Elisa Burigo, Alberto Fabrizi, more

Journal of Applied Polymer Science > 134 > 16 > n/a - n/a

Multifunctional nanocomposites can be achieved by addition of modified layered nanoclays to impart to the final materials a designed set of properties. The easy reproducible preparation of copper modified montmorillonite has been reported here together with its spectroscopic characterization, including ²⁹Si NMR in the solid state. Epoxy‐nanocomposites and glass fiber reinforced laminates containing...

article

Interaction products of cytotoxic Cu(I) complexes with different solvent mixtures: an electrospray ionization mass spectrometry and density functional theory study

Francesco Tisato, Daniel Forrer, Sergio Tamburini, Andrea Vittadini, more

Rapid Communications in Mass Spectrometry > 31 > 2 > 179 - 192

Rationale [Cu(P)₄][BF₄]‐type complexes (P = tertiary phosphine) have shown significant antitumor activity. This biological property appears to be activated via formation of coordinative unsaturated [Cu(P)_n]⁺ species (n < 4), that may interact with various molecules starting from the solvent(s) in which they are dissolved. Aim of our study was to investigate the interaction of these species with...

article

Synthesis and reactivity of Ln- and LnNa-macrocyclic compartmental Schiff base and polyamino complexes

Valentina Peruzzo, Arianna Lanza, Fabrizio Nestola, Pietro Alessandro Vigato, more

Inorganica Chimica Acta > 2014 > 416 > Complete > 226-234

The [1+1] Schiff base macrocyclic ligands H ₂ L _A and H ₃ L _B , synthesized by condensation of 3,3′-(3-oxapentane-1,5-diyldioxy)bis(2-hydroxybenzaldehyde) (H ₂ L′) with 1,5-diamino-3-azamethylpentane (A′) and N,N-bis(2-aminoethyl)-2-hydroxybenzylamine·3HCl (HB′·3HCl), respectively, and their related polyamines H ₂ R _A and H ₃ R _B...

article

Coordination ability of free or silica immobilized Schiff bases towards Hg(II), Cd(II) and Pb(II) ions

Andrea Magro, Laura Crociani, Cristina Prinzivalli, Pietro Alessandro Vigato, more

Inorganica Chimica Acta > 2014 > 410 > Complete > 29-38

A series of ligands, consisting of Schiff bases and their reduced amine derivatives, was prepared by [2+1] condensation of 3-methoxy (or 3-ethoxy)-2-hydroxybenzaldehyde or 2-hydroxybenzaldehyde with 3,4-diaminobenzoic acid or 1,2-diaminobenzene, and by subsequent reduction with hydrogen or NaBH ₄ . The complexation behavior of these ligands towards Cd(II), Pb(II) and Hg(II) salts was tested...

article

f,f Homodinuclear and d,f or f,f′ Heterodinuclear Complexes with a [2+2] Macrocyclic Compartmental Schiff Base

Sergio Tamburini, Valentina Peruzzo, Franco Benetollo, P. Alessandro Vigato

European Journal of Inorganic Chemistry > 2010 > 12 > 1853 - 1864

The [2+2] compartmental macrocyclic complexes [Ln(H₂‐L)(NO₃)], where H₂‐L is the cyclic Schiff base, derived from the condensation of 2,6‐diformyl‐4‐chlorophenol (H‐L^A) or 2,6‐diformyl‐4‐methylphenol (H‐L^B) and N,N‐bis(2‐aminoethyl)‐2‐hydroxybenzylamine·3HCl (HA′·3HCl), contains a free N₃O₃ coordination chamber and can act as a ligand toward an identical or a different lanthanide(III) ion and a d...

article

The evolution of β-diketone or β-diketophenol ligands and related complexes

P. Alessandro Vigato, Valentina Peruzzo, Sergio Tamburini

Coordination Chemistry Reviews > 2009 > 253 > 7-8 > 1099-1201

The design and properties of the most relevant and illustrative examples of β-diketones or β-ketophenols and related complexes, together with their evolution into more sophisticated linear or tridimensional polymeric systems, are reviewed. The introduction of different functionalities at the periphery of the coordinating moiety of β-diketones and the physico-chemical properties arising from the related...

article

An ⁸⁶ Y-Labeled Mirror-Image Oligonucleotide: Influence of Y-DOTA Isomers on the Biodistribution in Rats ^†

Joern Schlesinger, Inge Koezle, Ralf Bergmann, Sergio Tamburini, more

Bioconjugate Chemistry > 2008 > 19 > 4 > 928 - 939

article

The challenge of cyclic and acyclic schiff bases and related derivatives

Pietro Alessandro Vigato, Sergio Tamburini

Coordination Chemistry Reviews > 2004 > 248 > 17-20 > 1717-2128

The use of planar or tridimensional cyclic and acyclic Schiff bases, their polyamine homologues and related derivatives, for the formation of mononuclear and especially polynuclear complexes, is reported.Attention is devoted to the synthetic pathways and to the structural aspects of the resulting systems, particularly the role of the shape of the coordinating ligands and of the different metal ions...

article

Synthesis and characterization of a macrocyclic Schiff base Gd ^I ^I ^I complex as a relaxation agent for a faster acquisition of ² H NMR spectra of ethanol

Sergio Tamburini, Patrizia Tomasin, Pietro A. Vigato, Silvio Aime, more

Inorganica Chimica Acta > 2004 > 357 > 5 > 1374-1380

Quantitative ² H NMR analysis at the natural abundance represents a well-recognized and efficient method for the identification of the origin of ethanol from different sources. An intrinsic limitation of the protocol used is the long time required, about 8 h, because of the long T ₁ values of the ² H resonances. In this work we propose the use a paramagnetic relaxation agent...

article

Mono- and polynuclear Schiff base complexes derived from polyoxadiamines

Antonio Aguiari, Nicola Brianese, Sergio Tamburini, Pietro A. Vigato

Inorganica Chimica Acta > 1995 > 235 > 1-2 > 233-244

New compartmental macroacyclic and macrocyclic Schiff bases have been prepared by reaction of the formyl precursors 2,3-dihydroxy-benzaldehyde, 3-methoxy-2-hydroxy-benzaldehyde and 2,6-diformyl-4-chlorophenol with 1,2-diaminoethane, 1,3-diaminopropane and the polyethyleneoxy-diamine H ₂ N(CH ₂ ) ₂ [O(CH ₂ ) ₂ ] _n NH ₂ (n = 1, 2, 3) also with...

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