A5002468822- Advanced NMR Techniques and Applications
- NMR spectroscopy and applications
- Advanced Polymer Synthesis and Characterization
- Atomic and Subatomic Physics Research
- Polymer Nanocomposites and Properties
- Luminescence and Fluorescent Materials
- Ionic liquids properties and applications
- Advanced MRI Techniques and Applications
- TiO2 Photocatalysis and Solar Cells
- Advanced Battery Materials and Technologies
- Nanocomposite Films for Food Packaging
- Silicone and Siloxane Chemistry
- Photopolymerization techniques and applications
- Zeolite Catalysis and Synthesis
- Quantum Dots Synthesis And Properties
- Surfactants and Colloidal Systems
- Polymer composites and self-healing
- Polymer Surface Interaction Studies
- Flame retardant materials and properties
- Mesoporous Materials and Catalysis
- Polymer crystallization and properties
- Nanoparticle-Based Drug Delivery
- Chemical Synthesis and Characterization
- biodegradable polymer synthesis and properties
- Solid-state spectroscopy and crystallography
University of Milano-Bicocca
2015-2024
National Interuniversity Consortium of Materials Science and Technology
2002-2020
Mylan (Switzerland)
2015-2020
Milano University Press
2015-2020
Istituto Officina dei Materiali
2017-2019
University of Milan
1996-2015
Museum Conservation Institute
2014
Max Planck Institute for Polymer Research
2011
University of Sassari
2002
University of Genoa
2002
Molecular gas jars: Methane and carbon dioxide can be stored in open-pore van der Waals crystals of tris-o-phenylenedioxycyclotriphosphazene at low partial pressure, whereas hydrogen, nitrogen, oxygen are selectively excluded. Gas molecules participate the supramolecular network weak interactions reside tight nanochannels close contact with surrounding aromatic rings (see picture). Supporting information for this article is available on WWW under...
We report a high-yield, low cost synthesis route to colloidal Cu1-xInS2 nanocrystals with tunable amount of Cu vacancies in the crystal lattice. These are then converted into quaternary Cu–In–Zn–S (CIZS) by partial exchange Cu+ and In3+ cations Zn2+ cations. The photoluminescence quantum yield these CIZS could be tuned up record 80%, depending on copper vacancies.
Retrieving the starting monomers from polymers synthesized by reversible deactivation radical polymerization has recently emerged as an efficient way to increase recyclability of such materials and potentially enable their industrial implementation. To date, most methods have primarily focused on utilizing high temperatures (typically 120 °C 180 °C) trigger depolymerization reaction. In this work, we show that, in presence Eosin Y under light irradiation, a much faster made...
Volatile species and large gas atoms, such as xenon, can diffuse into the aromatic nanochannels of a solid comprising tris(o-phenylenedioxy)cyclophosphazene molecules held together by weak interactions. Continuous-flow laser-polarized 129Xe NMR spectroscopy shows an anisotropic signal from xenon atoms inside crystals soon 200 ms after contact polarized with sample. The chemical shift anisotropy is concentration dependent (see picture) undergoes sign inversion result change symmetry electron cloud.
We report a new colloidal synthesis of niobium-doped TiO2 anatase nanocrystals (NCs) that allows for the preparation ∼10 nm NCs with control over amount Nb doping up to ∼14%. The incorporation niobium ions leads appearance tunable, broad absorption peak ranges from visible range mid-infrared. This optical behavior is attributed substitution Nb5+ on Ti4+ sites generating free carriers inside conduction band as supported by and electron paramagnetic resonance spectroscopic investigations. At...
A water-based process to convert vegetable waste into bioplastic films with appealing properties for packaging.
Silica-styrene butadiene rubber (SBR) nanocomposites were prepared by using shape-controlled spherical and rod-like silica nanoparticles (NPs) with different aspect ratios (AR = 1-5), obtained a sol-gel route assisted structure directing agent. The used as models to study the influence of particle shape on formation nanoscale immobilized at silica-rubber interface its effect dynamic-mechanical behavior. TEM AFM tapping mode analyses demonstrated that particles are surrounded layer surface....
Abstract Optically active materials able to up‐convert the frequency of incident radiation can be used enhance performance photovoltaic and photocatalityc cells, recovering sub‐bandgap photons not directly absorbed by devices. Actually, sensitized up‐conversion (SUC) based on multi‐component organic systems is most promising approach for these photon energy managing processes, being efficient also at solar irradiance. However, applications SUC real devices have been yet accomplished because...
Highly controlled polymers and nanostructures are increasingly translated from the lab to industry. Together with industrialization of complex systems renewable sources, a paradigm change in processing plastics rubbers is underway, requiring new generation analytical tools. Here, we present recent developments time domain NMR (TD-NMR), starting an introduction methods. Several examples illustrate take on traditional issues like measurement crosslink density vulcanized rubber or monitoring...
The industrial processing of avocados annually generates more than 1.2 million tons avocado peels (APs) and seeds (ASs) that have great potential in the production active bioplastics, although they never been considered for this aim until now. Separately, APs ASs, as well a combination (APSs), were evaluated here first time preparation antioxidant films, with application food packaging. Films prepared by casting, after their three different methods: (1) hydrolysis acid media, (2) followed...
A photocatalytic RAFT-controlled radical depolymerization method is introduced for precisely conferring temporal control under visible light irradiation. By regulating the deactivation of depropagating chains and suppressing thermal initiation, an excellent was enabled, exemplified by several consecutive "on" "off" cycles. Minimal, if any, could be observed during dark periods while polymer chain-ends efficiently re-activated continue to depropagate upon re-exposure light. Notably, favoring...
Molekulare Flaschen für Gase: Methan und Kohlendioxid können anders als Wasserstoff, Stickstoff Sauerstoff bei niedrigem Partialdruck in offenporigen Van-der-Waals-Kristallen von Tris-o-phenylendioxycyclotriphosphazen "aufbewahrt" werden. Die Gasmoleküle sind an dem supramolekularen Netzwerk aus schwachen Wechselwirkungen beteiligt befinden sich den engen Nanokanälen engem Kontakt mit umgebenden aromatischen Ringen (siehe Bild). Supporting information for this article is available on the WWW...
We describe two synthesis approaches to colloidal Cu3P nanocrystals using trioctylphosphine (TOP) as phosphorus precursor. One approach is based on the homogeneous nucleation of small with hexagonal plate-like morphology and sizes that can be tuned from 5 50 nm depending reaction time. In other approach, metallic Cu are nucleated first then they progressively phosphorized Cu3P. this case, intermediate Janus-like dimeric nanoparticles isolated, which made domains different materials, Cu3P,...
SAXS, <sup>129</sup>Xe NMR and PALS were used to interrogate the relationship between structure, free volume physicochemical properties of ionic liquid mixtures.
Upconversion is a photon-management process especially suited to water-splitting cells that exploit wide-bandgap photocatalysts. Currently, such catalysts cannot utilize 95% of the available solar photons. We demonstrate here energy-conversion yield for standard photocatalytic device can be enhanced under irradiance by using low-power upconversion system recovers part unutilized incident sub-bandgap The upconverter based on sensitized triplet-triplet annihilation mechanism (sTTA-UC) obtained...
Super paramagnetic iron oxide nanoparticles (SPION) were augmented by both hyaluronic acid (HA) and bovine serum albumin (BSA), each covalently conjugated to dopamine (DA) enabling their anchoring the SPION. HA BSA found simultaneously serve as stabilizing polymers of Fe3O4·DA-BSA/HA in water. efficiently entrapped released hydrophobic cytotoxic drug paclitaxel (PTX). The relative amount modulates not only total solubility but also relaxation properties preparation. entrapping PTX did...
The sensitized triplet–triplet annihilation-based upconversion in bicomponent systems is currently considered the most promising strategy for increasing light-harvesting ability of solar cells. Flexible, manageable, inexpensive up-converting devices become possible by implementing this process elastomers. Here, we report a study combining optical spectroscopy data light conversion with nano- and macroscopic viscoelastic characterization host material embedding active dyes, order to find...
Abstract Exosomes are promising therapeutics for tissue repair and regeneration to induce guide appropriate immune responses in dystrophic pathologies. However, manipulating exosomes control their biodistribution targeting them vivo achieve adequate therapeutic benefits still poses a major challenge. Here we overcome this limitation by developing an externally controlled delivery system primed annexin A1 myo-exosomes (Exo myo ). Effective nanocarriers realized immobilizing the Exo onto...
Single-file diffusion behavior is expected for atoms and molecules in one-dimensional gas phases of nanochannels with transverse dimensions that do not allow the particles to bypass each other. Although single-file may play an important role a wide range industrial catalytic, geologic, biological processes, experimental evidence scarce despite fact dynamics differ substantially from ordinary diffusion. We demonstrate application continuous-flow laser-polarized 129Xe NMR spectroscopy study...
Aromatic nanochannels were assembled about linear π-conjugated molecules. The novel supramolecular architectures are cemented by weak interactions and form crystals that melt at much higher temperatures than the standard molecular arrangement. perfect fitting of chains in unusual environment is shown close contacts 2.5 Å occur between guest hydrogen atoms surrounding aromatic groups (see picture). Supporting information for this article available on WWW under...