A5089812304- Cultural Heritage Materials Analysis
- Building materials and conservation
- Conservation Techniques and Studies
- Particle physics theoretical and experimental studies
- Porphyrin and Phthalocyanine Chemistry
- Analytical Chemistry and Sensors
- Ion-surface interactions and analysis
- Advanced Chemical Sensor Technologies
- Organic Electronics and Photovoltaics
- Quantum Chromodynamics and Particle Interactions
- Gas Sensing Nanomaterials and Sensors
- Advancements in Battery Materials
- Electrochemical Analysis and Applications
- Corrosion Behavior and Inhibition
- Diamond and Carbon-based Materials Research
- High-Energy Particle Collisions Research
- Graphene research and applications
- Dark Matter and Cosmic Phenomena
- X-ray Spectroscopy and Fluorescence Analysis
- Metal-Catalyzed Oxygenation Mechanisms
- Particle Detector Development and Performance
- Magnetic and transport properties of perovskites and related materials
- Analytical Chemistry and Chromatography
- Physics of Superconductivity and Magnetism
- Advanced Condensed Matter Physics
Roma Tre University
2016-2025
Istituto Nazionale di Fisica Nucleare
2015-2025
Istituto Nazionale di Fisica Nucleare, Sezione di Roma Tre
2013-2024
Institute for Microelectronics and Microsystems
2018-2023
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati
2015
Sapienza University of Rome
2015
University of Rome Tor Vergata
2009-2014
European University of Rome
2012
Institute of Materials for Electronics and Magnetism
2012
University of Salento
2011
In this work we investigate the strongly inhomogeneous distribution of CO2 and H2O in a synthetic beryl having peculiar hourglass zoning Cr due to crystal growth. The sample was treated at 800°C, 500 MPa, CO2-rich atmosphere. High-resolution FESEM images revealed that boundary is not correlated physical discontinuities, least scale tens nanometers. Polarized FPA-FTIR imaging, on other side, chemical acts as fast pathway for carbon dioxide diffusion, feature never observed so far minerals....
In this work, hydrophilic silver nanoparticles (AgNPs), bifunctionalized with citrate (Cit) and L-cysteine (L-cys), were synthesized. The typical local surface plasmon resonance (LSPR) at λ max = 400 nm together Dynamic Light Scattering (DLS) measurements (<2RH> 8 ± 1 nm) TEM studies (Ø 5 2 confirmed the system nanodimension stability in water. Molecular electronic structures of AgNPs investigated by FTIR, SR-XPS, NEXAFS techniques. We tested as plasmonic sensor water 16 different...
Hybrid biomaterials allow for the improvement of biological properties materials and have been successfully used implantology in medical applications. The covalent selective functionalization with bioactive peptides provides favorable results tissue engineering by supporting cell attachment to biomaterial through biochemical cues interaction membrane receptors. Since may alter chemical physical biomaterials, this study we characterized responses differently functionalized chitosan analogs....
Photon-enhanced thermionic emission (PETE) is a physical mechanism based on the electron's from photon absorption and thermalization, which can be highly efficient to convert concentrated sunlight. Here, we demonstrate that nanocrystalline diamond thin films deposited heavily doped p-type silicon absorbers potentially PETE cathodes, showing low χ value of ∼0.4 eV. A detailed analysis has been carried out as function film thickness by correlating performance under sunlight with several...
Detectors are a key feature of the contemporary scientific approach to cultural heritage (CH), both for diagnostics and conservation. INFN-CHNet is network Italian National Institute Nuclear Physics that develops applies new instrumentation study CH. This process results in optimized traditional state-of-the-art highly innovative detection setups spectrometric techniques. Examples former X-rays, gamma-rays, visible-light particles spectrometers tailored CH applications, with performances,...
We present an experimental investigation of the magnetic ground state in <a:math xmlns:a="http://www.w3.org/1998/Math/MathML"><a:mrow><a:msub><a:mi>Ba</a:mi><a:mn>4</a:mn></a:msub><a:msub><a:mi>NbIr</a:mi><a:mn>3</a:mn></a:msub><a:msub><a:mi mathvariant="normal">O</a:mi><a:mn>12</a:mn></a:msub></a:mrow></a:math>, a fractional valent trimer iridate. X-ray absorption and photoemission spectroscopy show that Ir valence lies between <c:math...
This paper presents an original method for synthesizing Zn-doped mesoporous silica (KCC-1) via a one-pot microemulsion followed by hydrothermal treatment. Zn incorporation into the matrix was achieved varying Zn/Si molar ratios from 1% to 8%. The Zn-doping effect on KCC-1 morphological and structural properties investigated using several characterization techniques, providing new insights behavior coordination environment. X-ray fluorescence (XRF) spectra confirmed stoichiometric doping of...
Abstract Blends of small‐molecule organic semiconductors (OSCs) and insulating polymers in Organic Field‐Effect Transistors (OFETs) are mainly used to assist the solution‐processing OSCs, but they can also reduce interfacial charge traps due vertical phase separation. Such known affect both electrical response radiation‐induced collection capability these devices. This study aims optimize separation blend films 1,4,8,11‐tetramethyl‐6,13‐triethylsilylethynyl pentacene (TMTES) polystyrene (PS)...
Functionalization of the β-pyrrolic positions corrole macrocycle with -NO(2) groups is limited at present to metallocorrolates due instability exhibited by free bases under oxidizing conditions. A careful choice oxidant can limit transformation corroles into decomposition products or isocorrole species, preserving aromaticity, and thus allowing insertion nitro onto framework. Here we report results obtained reacting 5,10,15-tritolylcorrole (TTCorrH(3)) AgNO(2)/NaNO(2) system, give mono-...
Abstract A flexible, fully organic detector for proton beams is presented here. The operates in the indirect mode and composed of a polysiloxane-based scintillating layer coupled to an phototransistor, that assessed flexibility low-voltage operation ( V = −1 V), with limit detection 0.026 Gy min . We present kinetic model able precisely reproduce dynamic response device under irradiation provide further insight into physical processes controlling it. This designed target real-time in-situ...
Abstract The implementation of organic semiconductor (OSC) materials in X‐ray detectors provides exciting new opportunities for developing a generation biocompatible devices with high potential the fabrication sensitive and low‐cost imaging systems. Here, performance field‐effect transistors (OFETs) based on blends 1,4,8,11‐tetramethyl‐6,13‐triethylsilylethynyl pentacene (TMTES) polystyrene is reported. films are printed employing low cost high‐throughput deposition technique. exhibit...
Two different methods for the regioselective nitration of meso-triarylcorroles leading to corresponding β-substituted nitrocorrole iron complexes have been developed. A two-step procedure affords three Fe(III) nitrosyl products—the unsubstituted corrole, 3-nitrocorrole, and 3,17-dinitrocorrole. In contrast, a one-pot synthetic approach drives reaction almost exclusively formation Electron-releasing substituents on meso-aryl groups triarylcorroles induce higher yields longer times than what...
Bromination of 3-nitro-5,10,15-triarylcorrole selectively provides two regioisomers, depending on the reaction pathway. An isocorrole species is key intermediate to drive towards 2-Br-17-nitro regioisomer.
Mono- and di-substituted β-nitro derivatives have been obtained from the reaction of ttcorrFeCl with sodium nitrite in refluxing DMF. This result is unprecedented for iron corrolates further evidences non-innocent character corrole ligand.
We have studied the controlled adsorption of molecules volatile compounds on thin Langmuir−Blodgett films porphyrins deposited onto surface a quartz microbalance. The modification film optical anisotropy has been measured by reflectance spectroscopy (RAS), and simultaneously, amount adsorbed monitored. Optical spectra after single analytes are interpreted straightforwardly in terms anisotropies related to H-like J-like aggregation modes porphyrins. By an appropriate selection analytes, we...
When investigating gilded artifacts or works of art, the determination gilding thickness plays a significant role in establishing restoration protocols conservation strategies. Unfortunately, this is done by cross-sectioning object, destructive approach not always feasible. A non-destructive alternative, based on differential attenuation fluorescence radiation from sample, has been developed past years, but due to intrinsic random nature X-rays, study single few spots an objects surface may...
We study the synthesis and characterisation of an innovative TEOS-based composite coating, which could improve previous formulations used in field monument conservation. The proposed coating is composed by a tetraethoxyorthosilicate matrix (TEOS), containing elasticiser (hydroxyl-terminated polydimethylsiloxane (PDMS-OH)) non-ionic surfactant (n-octylamine). specific self-cleaning antifouling properties are obtained addition different kinds nanofillers: commercial TiO2 nanoparticles, plus...
Mesoporous silica nanoparticles (MSNPs) are currently used in different fields like catalysis, nanomedicine, and conservation science, taking advantage of their high surface area. Here, we synthesized functionalized mesoporous dendritic fibrous to realize a smart delivery system protective agents for metals. Different MSNPs were obtained via the microemulsion method followed by hydrothermal or refluxing treatment at w/o ratios, times, temperatures. Dendritic spherical with specific features...