A5053264025- Graphene research and applications
- Carbon Nanotubes in Composites
- Fullerene Chemistry and Applications
- Graphene and Nanomaterials Applications
- Molecular Junctions and Nanostructures
- Supercapacitor Materials and Fabrication
- Carbon and Quantum Dots Applications
- Conducting polymers and applications
- Advancements in Battery Materials
- Iron oxide chemistry and applications
- Advanced Sensor and Energy Harvesting Materials
- Porphyrin and Phthalocyanine Chemistry
- Nanomaterials for catalytic reactions
- Nanoparticle-Based Drug Delivery
- Diamond and Carbon-based Materials Research
- Supramolecular Chemistry and Complexes
- Luminescence and Fluorescent Materials
- Nanocluster Synthesis and Applications
- Nanomaterials and Printing Technologies
- TiO2 Photocatalysis and Solar Cells
- Boron and Carbon Nanomaterials Research
- Covalent Organic Framework Applications
- Polymer Nanocomposites and Properties
- Supramolecular Self-Assembly in Materials
- Advanced Photocatalysis Techniques
University of Patras
2016-2025
University of West Attica
2023
National Centre of Scientific Research "Demokritos"
2003-2013
Palacký University Olomouc
2008
University of Ioannina
1999-2008
Foundation for Research and Technology Hellas
2008
Cornell University
2008
University of Groningen
2006
University of Trieste
2001-2005
University of Notre Dame
2002-2005
A very general and versatile method for functionalizing different types of carbon nanotubes is described, using the 1,3-dipolar cycloaddition azomethine ylides. Approximately one organic group per 100 atoms nanotube introduced, to yield remakably soluble bundles nanotubes, as seen in transmission electron micrographs. The solubilization generates a novel, interesting class materials, which combines properties moiety, thus offering new opportunities applications materials science, including...
Due to their large chemically active surface and stability at high temperatures carbon nanotubes (CNTs) have been used as a support material for the dispersion stabilization of metal semiconductor nanoparticles (NPs). These hybrid materials found several applications in catalysis, nanoelectronics, optics, nanobiotechnology, etc. Several ways described literature immobilize NPs on CNTs they can be divided into two main pathways: (a) formation (and stabilization) directly nanotube surface, (b)...
The chemical synthesis and photoluminescence properties of either dispersed or supported carbogenic nanoparticles are described. In the first case, ionic obtained by thermal oxidation an appropriate citrate salt. second, decorate external surfaces zeolite crystals a preexchanged host.
Abstract Carbon nanotubes have attracted great interdisciplinary interest because of their unique structure and properties. However, carbon‐nanotube research is challenged by several problems, such as: i) mass production material, ii) control length, diameter, chirality, iii) manipulation for use in diverse technological fields. Issues regarding the synthesis purification as well functionalization solubilization carbon are relevant topics this rapidly growing field. In paper, covalent...
Colloidal graphene: Treatment of graphite powder with a series certain aromatic solvents under sonication leads to the homologous set colloidal dispersions containing solubilized graphenes (see image). Detailed facts importance specialist readers are published as ”Supporting Information”. Such documents peer-reviewed, but not copy-edited or typeset. They made available submitted by authors. Please note: The publisher is responsible for content functionality any supporting information...
Abstract Stoichoimetric graphene fluoride monolayers are obtained in a single step by the liquid‐phase exfoliation of graphite with sulfolane. Comparative quantum‐mechanical calculations reveal that is most thermodynamically stable five studied hypothetical derivatives; graphane, fluoride, bromide, chloride, and iodide. The transformed into via iodide, spontaneously decomposing intermediate. calculated bandgaps halides vary from zero for bromide to 3.1 eV fluoride. It possible design...
Graphene sheets derived from dispersion of graphite in pyridine were functionalised by the 1,3 dipolar cycloaddition azomethine ylide. The organically modified graphene are easily dispersible polar organic solvents and water, they extensively characterised using several spectroscopic microscopy techniques.
High solubility of SWNTs and MWNTs in water is obtained by organic functionalisation; derivatisation with N-protected glycine also easily achieved.
The magnetic modification of carbon nanotubes is described here. Pyrene can be noncovalently attached on the nanotube surface. A carboxylic derivative pyrene used as interlinker for binding capped nanoparticles nanotubes. increased organophilic character induces high solubility in organic media modified
We show that covalent functionalization of carbon nanotubes (CNTs) via 1,3-dipolar cycloaddition is a powerful method for enhancing the ability to process CNTs and facilitating preparation hybrid composites, which achieved solely by mixing. were functionalized with phenol groups, providing stable dispersions in range polar solvents, including water. Additionally, could easily be combined polymers layered aluminosilicate clay minerals give homogeneous, coherent, transparent CNT thin films gels.
We report a new method for the purification of HiPCO single-wall carbon nanotubes (SWNT), which consists following sequence: (a) organic functionalization as-produced (pristine tubes, p-SWNT), (b) soluble functionalized (f-SWNT), (c) removal functional groups and recovery purified (r-SWNT) by thermal treatment at 350 degrees C, followed annealing to 900 C. Each these steps contributes purification, but only their sequential combination leads high-purity materials. Organic makes SWNT more...
Four ionic fullerene derivatives, which are relatively soluble in polar solvents, shown to organize into morphologically different nanoscale structures. Spheres, nanorods, and nanotubules form water depending on the side chain appendage of spheroid. Images at structures were obtained via transmission electron microscopy. Also, computer simulations used for investigating relative spatial arrangements. The efficient method fabricate almost perfect uniformly shaped nanotubular crystals, order...
The combination of the hydrophobic fullerene core with hydrophilic functional groups both ionic and nonionic nature produces organized structures sizes that range from nanometer to micrometer length scales. driving force toward this spontaneous organization is amphiphilic character derivatives. To control shape size supramolecular assemblies ultimately their function, important parameters must be tuned are (i) balance between moieties, (ii) effect environment, typically provided by simple...
Efficient and selective methods for covalent derivatization of graphene are needed because they enable tuning graphene's surface electronic properties, thus expanding its application potential. However, existing approaches based mainly on chemistry oxide achieve only limited level functionalization due to chemical inertness the nonselective simultaneous attachment different functional groups, respectively. Here we present a conceptually route synthesis cyanographene via controllable...
Induction of self-organization between zinc phthalocyanine (ZnPc) and C60 moieties in a novel amphiphilic ZnPc-C60 salt results uniformly nanostructured 1-D nanotubules. Their photoreactivity, terms ultrafast charge separation (i.e., approximately 1012 s-1) ultraslow recombination 103 s-1), is remarkable. In addition, the observed ZnPc*+-C60*- lifetime 1.4 ms implies, relative to that monomeric ( 3 ns), an impressive stabilization 6 orders magnitude.
We report the synthesis of three novel, versatile fullerene intermediates whose main feature is presence an amino end group. Simple condensation reactions these under standard conditions produce new derivatives that are useful for applications in materials science and medicinal chemistry.
Hexagonal close-packed (hcp) Ni particles were prepared in the nanosize range (13–25 nm) by reduction of Ni(NO3)2 polyethylene glycol (PEG) with various molecular weights. The reaction occurred presence an equimolecular mixture oleic acid and oleyl amine, which plays role a stabilizer gives solubility to nanoparticles non-polar solvents. crystal structure seems be controlled weight PEG molecule subsequently temperature. magnetic properties hcp are also studied.
Organically modified carbon nanotubes serve as intermediate substrate for further functionalization with a perfluoroalkylsilane toward superhydrophobic core–shell hybrid that is additionally soluble in certain solvents. On account of these properties, the can be easily blended polymers or impregnated on surface textiles, also rendering them superhydrophobic.
In this work, it is shown that the hydrophilic functionalized multiwall carbon nanotubes (MWCNs) can stabilize a large amount of pristine graphene nanosheets in pure water without assistance surfactants, ionic liquids, or polymers. Role stabilizer conveyed by highly nanotubes, dihydroxy phenyl groups, affording stable dispersion at concentrations as high 15 mg mL −1 . Such multidimensional (2D/1D) graphene/MWCN hybrid found to be dispersible also other polar organic solvents such ethanol,...