Maurizio Licchelli

University of Pavia

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Luigi Fabbrizzi

University of Pavia

127

Marco Malagodi

University of Pavia

Antonio Poggi

University of Pavia

Piersandro Pallavicini

University of Pavia

Maduka L. Weththimuni

University of Pavia

Massimo Boiocchi

University of Pavia

Donatella Sacchi

University of Pavia

Angelo Taglietti

University of Pavia

Tommaso Rovetta

University of Pavia

Giacomo Fiocco

University of Pavia

Cooperative Institutions

University of Pavia

116

National Interuniversity Consortium of Materials Science and Technology

National Research Council

Istituto Nazionale di Fisica Nucleare, Sezione di Pavia

Universitat de València

University of Florence

Centre National de la Recherche Scientifique

Universitat Politècnica de València

University of Parma

University of Bologna

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Nano-hydroxyapatite for the conservation of Serena stone

Maduka L. Weththimuni Giacomo Fiocco Francesca Volpi Marco Malagodi Maurizio Licchelli

In past decades, interest in using nanomaterials for the preservation of valuable cultural heritage was rapidly increased due to their excellent properties.In the present study, a biomimic method for the consolidation of sandstone (i.e.Serena stone) by hydroxyapatite was investigated.The strategy is to mimic the growth of bone like crystals: calcium (as Ca(OH)2 nanoparticles) and phosphorus (as diammonium hydrogen phosphate) are introduced into stone substrate and then, mineralized in-situ at room temperature.Before the treatments, Ca(OH)2 nanoparticles have been synthesized and characterized by different methods: scanning electron microscopy (SEM), transmission electron microscopy (TEM) and dynamic light scattering (DLS).In addition to that, the conservation efficacy was ascertained by measuring physical-structural properties, especially the resistance to weathering induced by salt crystallization.

Nanomaterials

10.21014/tc4-arc-2023.115

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Redox processes in supramolecular coordination compounds

Coordination Chemistry Reviews (1992)

Giancarlo De Santis Luigi Fabbrizzi Maurizio Licchelli Piersandro Pallavicini

Coordination sphere

Coordination geometry

10.1016/0010-8545(92)80054-u

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Citations (49)

Template synthesis of azacyclam metal complexes using primary amides as locking fragments

Coordination Chemistry Reviews (2009)

Luigi Fabbrizzi Maurizio Licchelli Lorenzo Mosca Antonio Poggi

Amide

Cyclam

Sulfonamide

Primary (astronomy)

Derivative (finance)

10.1016/j.ccr.2009.12.002

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Citations (41)

Water-repellent properties of fluoroelastomers on a very porous stone: Effect of the application procedure

Progress in Organic Coatings (2012)

Maurizio Licchelli Marco Malagodi Maduka L. Weththimuni Chiara Zanchi

Penetration (warfare)

Water repellent

Superhydrophobic coating

10.1016/j.porgcoat.2012.11.005

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Citations (50)

Fluorescent Chemosensors which Take Profit from the Metal-Ligand Interaction

Springer eBooks (1997)

Luigi Fabbrizzi G. Francese Maurizio Licchelli Piersandro Pallavicini Angelo Perotti

Photoinduced electron transfer

10.1007/978-94-011-3973-1_6

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Fluorescent sensor of imidazole and histidine

Chemical Communications (1997)

Luigi Fabbrizzi G. Francese Maurizio Licchelli Angelo Perotti Angelo Taglietti

The dizinc(II) complex of an octamine containing the anthracene subunit binds both the imidazolate anion and the imidazolate moiety of L-histidine, and signals the binding through the fluorescence quenching of the fluorophore.

Imidazole

10.1039/a608531h

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Citations (104)

Urea vs. thiourea in anion recognition

Organic & Biomolecular Chemistry (2005)

David Esteban‐Gómez Luigi Fabbrizzi Maurizio Licchelli Enrico Monzani

Neutral anion receptors (LH) form stable 1 : 1 H-bond [LH...X]- complexes with carboxylates, halides and phosphate (X-). Some of the [LH...X]- complexes, in presence of an excess of X-, release an HX fragment, with formation of [HX2]- and the deprotonated receptor L-. The tendency towards deprotonation increases with the acidity of the receptor and with the stability of the [HX2]- self-complex. Thus, the more acidic thiourea containing receptor deprotonates in the presence all the investigated anions except chloride, whereas the less acidic urea containing receptor undergoes deprotonation only in the presence of fluoride, due to the high stability of [HF2]-.

10.1039/b500123d

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Citations (339)

Metodi analitici non invasivi per lo studio dei materiali degli strumenti musicali antichi

DOAJ (DOAJ: Directory of Open Access Journals) (2016)

Tommaso Rovetta Alessandra Chiapparini Piercarlo Dondi Giusj Valentina Fichera Claudia Invernizzi

L’articolo illustra alcune delle attivita di ricerca e dei metodi sviluppati presso il Laboratorio Arvedi di Diagnostica non Invasiva per lo studio degli strumenti musicali antichi, con particolare interesse agli strumenti ad arco. Le opere di celebri liutai quali Stradivari, Amati e Guarneri, attualmente ospitati all’interno del Museo del Violino di Cremona, vengono analizzate da un team di ricercatori con tecniche totalmente non distruttive e non invasive secondo un protocollo sperimentale costruito ad hoc.

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A step forward in disclosing the secret of stradivari's varnish by NMR spectroscopy Part A Polymer chemistry

Journal of Polymer Science (2017)

Alberto Spinella Marco Malagodi Maria Luisa Saladino Maduka L. Weththimuni Eugenio Caponetti

It is commonly thought that the varnishes used by the great violin‐maker Antonio Stradivari may have a role in determining not only the esthetical features but also the acoustic properties of his instruments, and the idea of a “lost secret” is still widespread among musicians and violin‐makers. Previous scientific researches on varnish samples of Stradivari's instruments revealed that they were generally made by a mix of linseed oil with and colophony or metal rosinates in different ratios ranging between 75/25 (oil/resin) and 60/40 (oil/rosinate). However, it is still not clear whether the mixture composition can be related to any structural and/or functional feature of the resulting varnish. To investigate this aspect, we prepared varnishes with different linseed oil/colophony (w/w) ratios and applied NMR techniques to achieve information about their chemical–physical characteristics. Here, we show that the two components strongly interact in the solid state and that only the varnish prepared from 75/25 (w/w) linseed oil/colophony mixture displays unique properties in terms of dynamic homogeneity unlike coatings with other compositions. Our results suggest that the so‐called “secret” of Stradivari's finish could not be related to unknown ingredient(s) but to a specific oil/resin composition that provides the best performance. © 2017 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2017, 55, 3949–3954

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Microstructural investigations on historical organ pipes

Journal of Materials Science (2017)

Michela Albano Giusj Valentina Fichera Tommaso Rovetta Giulia Guida Maurizio Licchelli

Paperboard

10.1007/s10853-017-1134-2

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Citations (4)