Výsledky vyhledávání - "Giovanni Salassa"

Akademický článek

The Zn(II)-1,4,7-Trimethyl-1,4,7-Triazacyclononane Complex: A Monometallic Catalyst Active in Two Protonation States

Autor: Marta Diez-Castellnou, Giovanni Salassa, Fabrizio Mancin, Paolo Scrimin

Publikováno v: Frontiers in Chemistry, Vol 7 (2019)

In this paper, the unusual reactivity of the complex Zn(II)-1,4,7-trimethyl-1, 4,7-triazacyclononane (2) in the transesterification of the RNA-model substrate, HPNP (3), is reported. The dependence of the reactivity (k2) with pH does not follow the c

Externí odkaz: https://doaj.org/article/53758412a7714443a7ed908a15eaa3a9

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Akademický článek

Metal Complexes of Oxadiazole Ligands: An Overview

Autor: Giovanni Salassa, Alessio Terenzi

Publikováno v: International Journal of Molecular Sciences, Vol 20, Iss 14, p 3483 (2019)

Oxadizoles are heterocyclic ring systems that find application in different scientific disciplines, from medicinal chemistry to optoelectronics. Coordination with metals (especially the transition ones) proved to enhance the intrinsic characteristics

Externí odkaz: https://doaj.org/article/44c85c50151c4ea7a206df548dc947e4

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Role of Intercluster and Interligand Dynamics of [Ag25(DMBT)18]− Nanoclusters by Multinuclear Magnetic Resonance Spectroscopy

Autor: Giovanni Salassa, Thomas Bürgi, Jasmine Viger-Gravel, Marion Pupier, K. R. Krishnadas

Publikováno v: Journal of Physical Chemistry. C, Vol. 125, No 4 (2021) pp. 2524-2530

Even though gold and silver belong to the same group of the periodic table, they provide significantly different nanocluster (NC) structures in terms of both nuclearities and ligand coordination motifs. Until today, only one isostructural gold analog

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d2beca72f9ab8edfc58a6b01e1360c9a
https://archive-ouverte.unige.ch/unige:148583

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Ligand Migration from Cluster to Support : A Crucial Factor for Catalysis by Thiolate-protected Gold Clusters

Autor: Stephan Pollitt, Günther Rupprechter, Christoph Rameshan, Giovanni Salassa, Noelia Barrabés, Bei Zhang, Wojciech Olszewski, Thomas Bürgi, Vera Truttmann, Jordi Llorca, Annelies Sels

Publikováno v: Recercat: Dipósit de la Recerca de Catalunya
Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Recercat. Dipósit de la Recerca de Catalunya
instname
ChemCatChem, Vol. 10, No 23 (2018) pp. 5372-5376
Chemcatchem
UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
Dipòsit Digital de Documents de la UAB
Universitat Autònoma de Barcelona

Thiolate protected metal clusters are valuable precursors for the design of tailored nanosized catalysts. Their performance can be tuned precisely at atomic level, e.g. by the configuration/ type of ligands or by partial/complete removal of the ligan

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4e750708f6c6c0987badc670efea0ead
http://hdl.handle.net/2072/434678

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NMR spectroscopy: a potent tool for studying monolayer-protected metal nanoclusters

Autor: Giovanni Salassa, Thomas Bürgi

Publikováno v: Nanoscale Horizons, Vol. 3, No 5 (2018) pp. 457-463

Monolayer protected metal clusters are currently in the focus of interest both for fundamental reasons and for their use in possible applications. In the past two decades the interest was mainly focused on the evolution of the structrue and propertie

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::727a92b15b4410658068c0f91bce7223
https://doi.org/10.1039/c8nh00058a

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On the mechanism of rapid metal exchange between thiolate-protected gold and gold/silver clusters: a time-resolved in situ XAFS study

Autor: Thomas Bürgi, Günther Rupprechter, Yuming Wang, Noelia Barrabés, Bei Zhang, Giovanni Salassa, Rania Kazan, Annelies Sels, Stephan Pollitt, Olga V. Safonova

Publikováno v: Physical Chemistry Chemical Physics, Vol. 20, No 7 (2018) pp. 5312-5318

The fast metal exchange reaction between Au38 and AgxAu38−x nanoclusters in solution at −20 °C has been studied by in situ X-ray absorption spectroscopy (time resolved quick XAFS) in transmission mode. A cell was designed for this purpose consis

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8d1ce39568023b567ce6df078e4e8faf
https://doi.org/10.1039/c7cp08272j

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Dynamic Nature of Thiolate Monolayer in Au25(SR)18 Nanoclusters

Autor: Thomas Bürgi, Giovanni Salassa, Annelies Sels, Fabrizio Mancin

Publikováno v: ACS Nano, Vol. 11, No 12 (2017) pp. 12609-12614

Thiolate monolayer, protecting a gold nanocluster, is responsible for its chemical behavior and interaction with the environment. Understanding the parameters that influence the stability and reactivity of the monolayer will enable its precise and co

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5153ba4b68e814e92f11ce8379043f90
https://doi.org/10.1021/acsnano.7b06999

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Dynamic Origin of Chirality Transfer between Chiral Surface and Achiral Ligand in Au

Autor: Laura, Riccardi, Federico, De Biasi, Marco, De Vivo, Thomas, Bürgi, Federico, Rastrelli, Giovanni, Salassa

Publikováno v: ACS nano. 13(6)

The transfer of chirality between nanomolecules is at the core of several applications in chiral technology such as sensing and catalysis. However, the origin of this phenomenon and how exactly nanoscale objects transfer chirality to molecules in the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::d7d8d6bc5b8b01dff1685d2d5d238853
https://pubmed.ncbi.nlm.nih.gov/31199121

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Ligand and support effects on the reactivity and stability of Au38(SR)24 catalysts in oxidation reactions

Autor: Thomas Bürgi, Klaudia Hradil, Günther Rupprechter, Clara Garcia, Christoph Rameshan, Annelies Sels, Giovanni Salassa, Bei Zhang, Noelia Barrabés, Jordi Llorca

Publikováno v: Catalysis Communications, Vol. 130, No 105768 (2019)
Recercat. Dipósit de la Recerca de Catalunya
instname
UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)

Thiolate protected metal nanoclusters are emerging materials for the preparation of atomically defined heterogeneous catalysts. Recently it was revealed that the ligands migrated to the support upon cluster deposition, which influences the catalytic

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::75ed920481a2610e775505690685e885
https://archive-ouverte.unige.ch/unige:141611

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