A5004540722- Oxidative Organic Chemistry Reactions
- Radical Photochemical Reactions
- Chemical Synthesis and Reactions
- Carbon Nanotubes in Composites
- Polymer Nanocomposites and Properties
- Conducting polymers and applications
- Organic Chemistry Cycloaddition Reactions
- Polymer Nanocomposite Synthesis and Irradiation
- biodegradable polymer synthesis and properties
- Polymer crystallization and properties
- Catalysis for Biomass Conversion
- Catalytic C–H Functionalization Methods
- Free Radicals and Antioxidants
- Chemistry and Chemical Engineering
- Sulfur-Based Synthesis Techniques
- TiO2 Photocatalysis and Solar Cells
- Silicone and Siloxane Chemistry
- Polyoxometalates: Synthesis and Applications
- Inorganic and Organometallic Chemistry
- Graphene and Nanomaterials Applications
- Photochromic and Fluorescence Chemistry
- Crystallization and Solubility Studies
- Thermal and Kinetic Analysis
- Advanced Photocatalysis Techniques
- X-ray Diffraction in Crystallography
Politecnico di Milano
2016-2025
National Interuniversity Consortium of Materials Science and Technology
2018
Mylan (South Africa)
2016
University of Bergen
2005-2006
Instituto Politécnico Nacional
2005
University of Bergamo
2003
The aim of this work is the investigation effect ultrasound treatment on structural characteristics carbon nanotubes (CNTs) and consequent influence that shortening induced by sonication exerts morphology, rheological behaviour thermo-oxidative resistance ultra-high molecular weight polyethylene (UHMWPE)-based nanocomposites. First, CNTs have been subjected to for different time intervals performed spectroscopic morphological analyses reveal a dramatic decrease CNT’s original length occurs...
Abstract The oxidation of alcohols to aldehydes and ketones by air or oxygen under mild conditions (room temperature atmospheric pressure), catalysed persistent non‐persistent nitroxyl radicals in combination with transition metal salts, appears be the most convenient numerous processes developed for these purposes. thermochemistry, kinetics, Hammett correlations have allowed us establish, on a quantitative basis, fundamental difference between catalysts. In latter case, an interesting...
Poly(lactic acid) (PLA) is melt mixed with polyamide 11 (PA11) to obtain a heat-resistant fully bio-based blend PLA as the dominant component. The goal achieved by adding small amounts of organoclay (OMMT), which used manipulate microstructure. selective positioning OMMT inside PA11 and at PLA/PA11 interface turns morphology from drop/matrix into co-continuous high content (70 wt%). OMMT-rich framework that interpenetrates major phase effectively contributes bear stresses, nanocomposite...
Abstract A systematic study on the synthesis and properties of aza‐[5]helicenes bearing one or two nitrogen atoms in selected ring positions is reported for first time. This photochemical approach can be conveniently applied to preparation either mono‐ diaza[5]helicenes. The aza[5]helicenes were characterized by NMR spectroscopy, X‐ray crystallography, emission luminescence lifetime. extremely long triplet lifetime observed (in range seconds) makes these molecules promising candidates...
Abstract A metal‐free catalytic system consisting of an aldehyde and N ‐hydroxyphthalimide (NHPI) for the selective oxidation tertiary alkylaromatics with molecular oxygen has been developed. Cumene was oxidized efficiently to corresponding hydroperoxide under mild conditions. The molecule‐induced homolysis between peracids generated in situ NHPI ensured formation phthalimide ‐oxyl (PINO) radical even at room temperature. Investigations on aldehyde, solvent temperature effects allowed us...
The functionalisation of various heterocyclic bases induced by sunlight is reported. photoreaction occurred with higher yield in a liquid-solid heterogeneous system the presence polycrystalline TiO2 (anatase) than homogeneous under same experimental conditions.
The aerobic oxidation of 4,4'-diisopropyldiphenyl and 2,6-diisopropylnaphthalene, catalysed by N-hydroxyphthalimide Co(II) salts, leads to the corresponding tertiary benzyl alcohols with high conversion selectivity under mild conditions (temperature 30−60 °C atmospheric pressure). Solvent temperature effects, as resulting from pioneering work C. Walling, more recently conclusive resolution K. U. Ingold co-workers on a quantitative kinetic basis, strongly affect oxidation. This is related...
The Ce(IV)-NHPI system was used to generate a carbamoyl radical by oxidation of formamide; this nucleophilic has been successfully in the carbamoylation heteroaromatic bases.
In the last decades photocatalyzed organic processes have attracted great interest, due to their low environmental impact. Various oxidation and reduction of substrates been developed as alternative routes "classical" synthesis more complex molecules. this attempt TiO2 is actually largely studied employed, especially catalyst in pollutants photodegradation products with less From synthetic point view, attention has focused particularly on TiO2-mediated alcohols, carbonyl- carboxylic-...
This review summarizes the interesting results obtained during last decade in radical aminoalkylation of a wide range nucleophilic radicals (deriving from hydrocarbons, ethers, alcohols, halogenated derivatives and amides) promoted by transition metals. We focus on two main procedures which recently yielded most relevant this field: dimethylzinc-air process new Porta reaction, based Ti(III)/hydroperoxide system. These protocols often provide competitive alternatives to classical landmark...
Glycerol offers an easy and green route for the synthesis of aryloxypropanediols known pharmacological activity. is selectively converted to in a one-pot reaction, through situ formed glycerol carbonate, under benign solvent-free conditions. Catalyst unreacted reagent can be recycled.
ABSTRACT Multiwalled carbon nanotubes (CNTs) functionalized with hindered phenol moieties are dispersed in ultra‐high molecular weight polyethylene (UHMWPE), and the stabilizing action of antioxidant (AO) CNTs (AO‐ f ‐CNTs) is studied through a combination rheological spectroscopic (FT‐IR) analyses. The effectiveness two alternative compounding methods, namely hot compaction (HC) melt mixing (MM), compared. high temperature mechanical stress experienced during MM brings about noticeable...