A5009340258- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Molecular Sensors and Ion Detection
- Crystallography and molecular interactions
- Supramolecular Chemistry and Complexes
- Electrocatalysts for Energy Conversion
- Fuel Cells and Related Materials
- Metal-Organic Frameworks: Synthesis and Applications
- Luminescence and Fluorescent Materials
- Nanomaterials for catalytic reactions
- Analytical Chemistry and Sensors
- Lanthanide and Transition Metal Complexes
- Metal complexes synthesis and properties
- Synthesis and Characterization of Heterocyclic Compounds
- Advanced biosensing and bioanalysis techniques
- Radiopharmaceutical Chemistry and Applications
- Electrochemical Analysis and Applications
- Conducting polymers and applications
- Phytase and its Applications
- Molecular Junctions and Nanostructures
- Catalytic Cross-Coupling Reactions
- Covalent Organic Framework Applications
- Crystal structures of chemical compounds
- Porphyrin and Phthalocyanine Chemistry
- Dendrimers and Hyperbranched Polymers
National Interuniversity Consortium of Materials Science and Technology
2022-2024
San Raffaele University of Rome
2024
University of Florence
2012-2023
Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande Interfase
2018
Istituto Nazionale di Fisica Nucleare, Sezione di Napoli
1989
Anion–π interactions with the ligand give rise to infinite 2D networks established through short interhalogen contacts between I<sub>3</sub><sup>−</sup>and I<sup>−</sup>ions.
Apical interaction of O 2 with a square planar macrocyclic Pd( ii ) complex anchored on MWCNTs gives rise to significant electrocatalytic activity towards the oxygen reduction reaction (ORR). This finding confirms previous computational data.
Thermodynamic parameters (ΔG°, ΔH°, TΔS°), obtained by means of potentiometric and isothermal titration calorimetry (ITC) methods, for the binding equilibria involving anions high negative charge, like SO42–, SeO42–, S2O32– Co(CN)63–, nitroso-amino-pyrimidine receptors in water suggested that anion−π interactions furnish a stabilization about −10 kJ/mol to free energy association. These are almost athermic favored large entropic contributions which likely due reduced hydrophobic pyrimidine...
Ligands L1 and L2, consisting of a tetrazine ring decorated with two morpholine pendants different lengths, show peculiar anion-binding behaviors. In several cases, even the neutral ligands, in addition to their protonated HL+ H2L2+ (L = L2) forms, bind anions such as F–, NO3–, PF6–, ClO4–, SO42– form stable complexes water. The crystal structures H2L1(PF6)2·2H2O, H2L1(ClO4)2·2H2O, H2L2(NO3)2, H2L2(PF6)2·H2O, H2L2(ClO4)2·H2O that anion−π interactions are pivotal for formation these...
Foundations of the discording vocabulary novel supramolecular interactions lay onto polyiodide chemistry. Reviewing advancements in field, we tackle I⋯I contacts understanding, rationalization, and language on semantic scientific grounds.
In the last few years, a controversy has been raised regarding nature of chemical bonding present in phase change materials (PCMs), many which are minerals such as galena (PbS), clausthalite (PbSe), and altaite (PbTe). Two opposite models have claimed to be able explain extraordinary properties PCMs decade: hypervalent (electron-rich multicenter) model metavalent (electron-deficient) model. this context, third model, electron-deficient multicenter recently added. work, we comment on pros...
The Zr4+ complexes with desferrioxamine (H3DFO) and its derivatives are the only 89Zr-based imaging agents for proton emission tomography (PET) that have been used so far in clinical trials. Nevertheless, a complete speciation of Zr4+/H3DFO system solution has never performed stability constants relevant still unknown. Here we report, first time, this water, by potentiometric titrations, determination all formed pH range 2.5-11.5. Surprisingly, although gives rise to very stable 1:1 (logK =...
Synthesis of the new scorpiand ligand L composed a [9]aneN3 macrocyclic ring bearing CH2CH2NHCH2-anthracene tail is reported. forms both cation (Zn2+) and anion (phosphate, benzoate) complexes. In addition, zinc complexes bind these anions. The equilibrium constants for protonation complex formation were determined in 0.1 M NaCl aqueous solution at 298.1 ± K by means potentiometric (pH-metric) titrations. pH Controlled coordination/detachment to Zn2+ switch on off fluorescence emission from...
Enhanced anion recovery from water is achieved upon functionalization of activated carbon with polyamine groups.
The macrocyclic ligand (L), containing two terpyridine (terpy) and ethylenediamine (en) groups arranged in a cyclic terpy-en-terpy-en sequence, forms double-strand helicate Cu2L4+ complex made especially stable by the formation of interstrand π–π stacking interactions involving opposite pyridine rings. crystal structure this shows Cu2+ cations square pyramidal coordination environments defined donor atoms half chain composed, one ring, connected moiety adjacent rings successive terpyridine....
We report here the remarkable catalytic efficiency observed for two Pd(II) azamacrocyclic complexes supported on multiwalled carbon nanotubes (MWCNTs) toward oxygen reduction reactions. Beyond a main (>90%) 4e- process and an onset potential close to or better than those of commercial Pt electrodes, MWCNTs functionalization strategy, aimed at chemically defined Pd(II)-based centers, allowed half-cell exceed proton-exchange-membrane fuel-cell reference/target mass activity set by U.S....
The formation of halide and hydroxide anion complexes with two ligands L1 (3,6-bis(morpholin-4-ylmethyl)-1,2,4,5-tetrazine) L2 (3,6-bis(morpholin-4-ylethyl)-1,2,4,5-tetrazine) was studied in aqueous solution, by means potentiometric ITC procedures. In the solid state, HF2-, Cl- Br- H2L22+ were analysed single crystal XRD measurements. Further information on latter obtained use density functional theory (DFT) calculations combination polarizable continuum model (PCM). presence or bifluoride...
The Stoddart’s blue box (BB) (cyclobis(paraquat-p-phenylene))/iodide binary system was recently demonstrated to give rise porous three-dimensional networks which can hardly be classified as common XOF-type materials (X = M, C, S, i.e., metal, covalent, or supramolecular organic frameworks), leading the definition of permutable organized frameworks (POFs). ternary BB/iodide/iodine reported generate pentaiodide-based structures constituted by most complex interlocked polyiodides so far...
The binding properties of HL1, HL2, and HL3 ligands toward Cu(II) Zn(II) ions, constituted by tetraaza-macrocyclic rings decorated with pyrimidine pendants, were investigated means potentiometric UV spectrophotometric measurements in aqueous solution, the objective using related HL-M(II) (HL = HL1-HL3; M Cu, Zn) complexes for preparation hybrid MWCNT-HL-M(II) materials based on multiwalled carbon nanotubes (MWCNTs), through an environmentally friendly noncovalent procedure. As shown crystal...
Polyiodide chemistry is among the first historically reported examples of supramolecular forces at work. To date, owing to increasingly recognized role halogen bonding and incorporation iodine-based components in several devices, it remains an active field theoretical applied research. Herein we re-examine azacyclophanes as a class ligands for stabilization iodine-dense three-dimensional networks, showing how devised novel possible strategies starting from literature material. The new set...
A new G-(H2L)-Pd heterogeneous catalyst has been prepared via a self-assembly process consisting in the spontaneous adsorption, water at room temperature, of macrocyclic H2L ligand on graphene (G) (G + = G-(H2L)), followed by decoration macrocycle with Pd2+ ions (G-(H2L) G-(H2L)-Pd) under same mild conditions. This supramolecular approach is sustainable (green) procedure that preserves special characteristics and furnishes an efficient for Cu-free Sonogashira cross coupling reaction between...
The interplay of different supramolecular forces in stabilizing organic anion complexes with<italic>s</italic>-tetrazine-based ligands aqueous solution: a microscopic description.
Self-assembled infinite supramolecular pseudo-polyrotaxane with a poly[3]catenate axle sets new goal for the complexity of polyiodide architectures, paving way to solid-state conductors.