1,721,219 research outputs found
How molecular properties can be transferred to a stone: Surface functionalization at the nanoscale by covalent attachment of molecular monolayers on silicon
No full textThe effect of ageing and re-activation of titania-containing building materials, as investigated by X-ray Photoelectron Spectroscopy
No full textTitanium dioxide, the most promising photocatalyst, is becoming part of innovative commercial products in the main areas of energy and environment. A series of commercially available paintings containing anatase, which are proposed to help reducing indoor and outdoor environmental pollution, has been studied with X-ray Photoelectron Spectroscopy. XPS allows for elemental analysis and relative quantitative analysis at the level of single oxidation states in the first 1-5 nm from the surface. The samples have been studied in their progressive ageing with exposure to light and the atmosphere. Further to this step, they have been subjected to re-activation tests in visible light and eventually to ultraviolet light. All the above steps have been characterized with XPS. Various effects have been disclosed, relevant for an understanding of these innovative materials
Functional molecules and nanoparticles on crystalline silicon: Anchoring strategies and resulting properties
No full textCHIMICA UN'INTRODUZIONE
No full textEdizione italiana a cura di De Guidi, Della Pergola, Fanizzi, Michelin Lausarot, Picone e Sappa, coordinamento editoriale di R. Zanon
The transition from small- to large-nuclearity molecular metal clusters as seen by X-ray photoelectron spectroscopy
No full textP. Braunstein, L. A. Oro, P.R. Raitby Ed
PHOTOELECTRON-SPECTROSCOPY APPLIED TO MOLECULAR CLUSTERS AND SURFACE CLUSTERIZATION PROCESSES
No full textDouble and Triple Carbon-Carbon Bonds in Covalently Anchored Molecules on Silicon Oriented Surfaces
No full textThe quest for a detailed understanding of the mechanism associated with a reaction of molecular surface functionalization is still in its infancy, mainly because of the difficulties associated with a heterogeneous phase. However, a promising case is represented by the photo-excited anchoring of molecules carrying a terminal carbon-carbon unsaturation on silicon-oriented surfaces, which has lent itself to a number of experimental and theoretical investigations. A mechanism based on an initiation and a propagation step of such a reaction has been proposed, and faced with a variety of approaches. While there is not yet a general consensus about the mechanism itself, this report tries to collect the facts and ideas emerging from the relevant literature, with an eye to very recent advancements
Procedimento per rendere aderenti alle colture cellulari superfici polimeriche.
No full textbrevetto depositato congiuntamente dal CNR e dall'Università "La Sapienza" il 2/6/1999. Brevetto n. 0001306153. Brevetto depositato congiuntamente dal CNR e dall'Università "La Sapienza" il 2/6/1999.
Numero di domanda: RM1999A000351
Data deposito: 02/06/199
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