A5021871372- Graphene research and applications
- Ferroelectric and Piezoelectric Materials
- Graphene and Nanomaterials Applications
- Membrane Separation Technologies
- Conducting polymers and applications
- X-ray Diffraction in Crystallography
- Acoustic Wave Resonator Technologies
- Microwave Dielectric Ceramics Synthesis
- Molecular Junctions and Nanostructures
- Electrochemical sensors and biosensors
- X-ray Spectroscopy and Fluorescence Analysis
- Perovskite Materials and Applications
- Electronic and Structural Properties of Oxides
- 2D Materials and Applications
- Electron and X-Ray Spectroscopy Techniques
- Advanced Photocatalysis Techniques
- Advancements in Battery Materials
- Advanced Chemical Physics Studies
- Neuroscience and Neural Engineering
- Membrane Separation and Gas Transport
- Carbon and Quantum Dots Applications
- Catalysis and Oxidation Reactions
- Quantum Dots Synthesis And Properties
- Advanced biosensing and bioanalysis techniques
- Crystallization and Solubility Studies
Institute of Organic Synthesis and Photoreactivity
2016-2025
National Research Council
2017-2024
Southern Scientific Center
2015-2023
Russian Academy of Sciences
2009-2023
Institute of Organic Synthesis
2020
Chalmers University of Technology
2019
Göteborgs Stads
2019
University of Modena and Reggio Emilia
2015
Southern Federal University
1974-2014
Petersburg Nuclear Physics Institute
1985
We describe a fast and versatile method to functionalize high-quality graphene with organic molecules by exploiting the synergistic effect of supramolecular covalent chemistry. With this goal, we designed synthesized comprising long aliphatic chain an aryl diazonium salt. Thanks chain, these physisorb from solution onto CVD or bulk graphite, self-assembling in ordered monolayer. The sample is successively transferred into aqueous electrolyte, block any reorganization desorption An...
2-dimensional (2D) nanosheets such as graphene, graphene oxide, boron nitride or transition metal dichalcogenides can be produced on a large scale by exfoliation techniques. The lateral shape of these 2D materials is typically considered random and irregular, their average size often estimated using techniques characterized strong approximations poor statistical significance. Here we measure in quantitative, objective way the monoatomic combination optical, electronic scanning probe We...
There are tens of industrial producers claiming to sell graphene and related materials (GRM), mostly as solid powders. Recently the quality commercial GRM has been questioned, procedures for control were suggested using Raman Spectroscopy or Atomic Force Microscopy. Such techniques require dissolving sample in solvents, possibly introducing artefacts.
Graphene nanosheets and nanoplatelets -alginate composite hydrogels were prepared by ionic gelation the resulting gel beads exploited for removal of a mixture eight selected emerging contaminants (ECs) in tap water, including bisphenol A, ofloxacin diclofenac. The role graphene related materials (GRM) on bead structure, adsorption selectivity, kinetic, mechanism, efficiency was investigated. Combined Scanning Electron Microscopy (SEM) confocal Raman microscopy mapping showed porous structure...
Abstract The “on‐demand” capture and utilization of CO 2 is effectively realized with a readily accessible dual function organic composite. covalent controlled derivatization graphene oxide (GO) surface naturally occurring arginine led to “smart” material capable capturing (chemisorption) from high‐purity flue‐gas as well low‐concentration streams ( i. e . direct air capture) concomitant chemical activation toward the incorporation into cyclic carbonates. overall integrated conversion (ICCC)...
Hybrid organic–inorganic halide perovskites have emerged at the forefront of solution‐processable photovoltaic devices. Being perovskite precursor mixture a complex equilibrium species, it is very difficult to predict/control their interactions with different substrates, thus final film properties and device performances. Here wettability CH 3 NH PbI (MAPbI ) onto poly(3,4‐ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) hole transporting layer improved by exploiting cooperative...
Polysulfone-graphene oxide hollow fiber membranes (PSU-GO HFs) with simultaneous adsorption and ultrafiltration capabilities are herein described proposed for enhanced simplified Point-of-Use (POU) drinking water purification. The PSU-GO HFs were prepared by phase inversion extrusion a customized semi-industrial plant their morphology, surface properties, porosity investigated combined Scanning Electron Microscopy (SEM), contact angle Raman confocal microscopy, in relation to different...
Graphene nanosheets have outstanding adsorption efficiency toward organic molecules but the potential as sorbent for water purification is strongly limited by tedious recovery of after treatment, which can cause secondary contaminations. Here, we demonstrate that graphene oxide (GO) and reduced GO (rGO) aggregation in tap water, enabling their separation dead-end microfiltration (MF) on commercial polymeric hollow fiber modules. No evidence GO/rGO contamination was found microfiltered...
Amino acid modified graphene nanosheets adsorb emerging contaminants from tap water outperforming unmodified precursors and activated carbon for carbamazepine, bisphenol A benzophenone 4. Structure–adsorption relationships are unraveled.
Selective ion transport in large-area filters is achieved by applying a low electric voltage. The are made of hundreds hollow fibers coated with nanometric layer graphene oxide.
Electrolyte gated organic transistors can operate as powerful ultrasensitive biosensors, and efforts are currently devoted to devising strategies for reducing the contribution of hardly avoidable, nonspecific interactions their response, ultimately harness selectivity in detection process. We report a novel lab-on-a-chip device integrating multigate electrolyte field-effect transistor (EGOFET) with 6.5 μL microfluidics set up capable provide an assessment both response reproducibility, by...
Defect-rich graphene oxide (dGO) was used as sorbent for organic contaminants of emerging concern in tap water, including drugs and dyes, the performance compared to those lower-defects types. The role holes carbonyl- carboxylic groups on nanosheets surface adsorption mechanism efficiency investigated. dGO showed enhanced capacity toward two fluoroquinolone antibiotics (ofloxacin, OFLOX, ciprofloxacin, CIPRO) water with a maximum 650 mg/g, 204 mg/g Hummers derived commercial GO (hGO) 125...
We describe a process for recycling scraps of graphene hollow fiber membranes into sorbent granules suitable drinking water treatment.
Astrocytes are responsible for maintaining homoeostasis and cognitive functions through calcium signalling, a process that is altered in brain diseases. Current bioelectronic tools designed to study neurons not suitable controlling signals astrocytes. Here, we show electrical stimulation of astrocytes using electrodes coated with graphene oxide reduced induces respectively slow response calcium, mediated by external influx, sharp one, exclusively due release from intracellular stores. Our...
This study reveals the capability of nanostructured organic materials to undergo pseudomorphic transformations, a ubiquitous phenomenon occurring in mineral kingdom that involves replacement phase with new one while retaining original shape and volume. Specifically, it is demonstrated postoxidation process induced by HOF·CH3CN on preformed thiophene-based 1D nanostructures preserves their macro/microscopic morphology remarkably altering electro-optical properties forming oxygenated phase....
Per- and Polyfluoroalkyl substances (PFAS) are a class of persistent organic pollutants present in natural water showing environmental health risks. Most currently available purification technologies fail on the...
We present an environmentally benign methodology for the covalent functionalization (arylation) of reduced graphene oxide (rGO) nanosheets with arylazo sulfones. A variety tagged aryl units were conveniently accommodated at rGO surface via visible-light irradiation suspensions carbon nanostructured materials in aqueous media. Mild reaction conditions, absence photosensitizers, functional group tolerance and high atomic fractions (XPS analysis) represent some salient features characterizing...
We describe the preparation of poly(3-hexylthiophene-S,S-dioxide) nanoparticles using Rozen's reagent, HOF·CH3CN, either on poly(3-hexylthiophene) (P3HT) or preformed P3HT (P3HT-NPs). In latter case, core-shell (P3HT@PTDO-NPs) are formed, as confirmed by X-ray photoelectron spectroscopy measurements, indicating presence oxygen outer shell. The different modalities lead to a fine-tuning chemical-physical properties nanoparticles. show that absorption and photoluminescence features,...
Abstract The possibility of exfoliating graphite into graphene sheets allows the researchers to produce a material, termed “graphene paper” (G‐paper), conductive as but more flexible and processable. G‐paper is already used for electronic applications, like conductors, antennas, heaters, outperforming metal conductors thanks its high flexibility, lightness, chemical stability, compatibility with polymeric substrates. Here, effectiveness in use realization electrodes on plastic substrates...
In this work, the influence of graphene oxide (GO) doped poly(3,4 ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) thin nanocomposite on an indium–tin‐oxide (ITO) anode, as hole transport layer (HTL) in perovskite solar cells, was investigated. Different concentrations GO were added into PEDOT:PSS order to enhance its conductivity. particular, content rheological and thermal properties poly(3,4‐ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS)/GO nanocomposites initially...