A5060468748- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Organic Electronics and Photovoltaics
- Conducting polymers and applications
- Nonlinear Optical Materials Research
- Crystallography and molecular interactions
- Liquid Crystal Research Advancements
- Nonlinear Optical Materials Studies
- Crystal structures of chemical compounds
- Luminescence and Fluorescent Materials
- TiO2 Photocatalysis and Solar Cells
- Advanced Photocatalysis Techniques
- Photochemistry and Electron Transfer Studies
- Synthesis and Characterization of Heterocyclic Compounds
- Photochromic and Fluorescence Chemistry
- Organic Light-Emitting Diodes Research
- Perovskite Materials and Applications
- Analytical Chemistry and Sensors
- Semiconductor materials and devices
- Advanced Memory and Neural Computing
- Synthesis and properties of polymers
- Synthesis and Reactivity of Heterocycles
- Porphyrin and Phthalocyanine Chemistry
- Phenothiazines and Benzothiazines Synthesis and Activities
- Metal complexes synthesis and properties
University of Naples Federico II
2015-2024
Istituto Nazionale di Fisica Nucleare, Sezione di Napoli
2007-2016
Ben-Gurion University of the Negev
2012
Istituto Nanoscienze
2011
University of Salento
2011
Commissariat à l'Énergie Atomique et aux Énergies Alternatives
2005
CEA LITEN
2005
Exploiting the light-matter interplay to realize advanced light responsive multimodal platforms is an emerging strategy engineer bioinspired systems such as optoelectronic synaptic devices. However, existing neuroinspired devices rely on complex processing of hybrid materials which often do not exhibit required features for biological interfacing biocompatibility and low Young's modulus. Recently, organic photoelectrochemical transistors (OPECTs) have paved way towards that can better couple...
Abstract Data‐driven materials discovery has become increasingly important in identifying that exhibit specific, desirable properties from a vast chemical search space. Synergic prediction and experimental validation are needed to accelerate scientific advances related critical societal applications. A design‐to‐device study uses high‐throughput screens with algorithmic encodings of structure–property relationships is reported identify new panchromatic optical absorption, whose photovoltaic...
Three novel diketopyrrolopyrrole (DPP) based small molecules have been synthesized and characterized in terms of their chemical-physical, electrochemical electrical properties. All the consist a central DPP electron acceptor core symmetrically functionalized with donor bi-thienyl moieties flanked terminal positions by three different auxiliary electron-acceptor groups. This kind molecular structure, an alternation groups, was purposely designed to provide significant absorption at longer...
We report on optically induced spontaneous formation of periodic two-dimensional patterns newly synthesized polymers based Y-shape azobenzene molecules. Thin films this polymer are exposed to a single femtosecond laser beam in the near-infrared (wavelength = 800 nm), normally incident free surface film. The structures is observed after few seconds, both perpendicularly and parallel polarization direction, with periodicity about 470 250 nm, respectively, amplitude up 100 nm. features height...
Abstract The synthesis and full characterization of new chromophores with second order optical nonlinearities containing the 2‐phenyl‐(5,6)‐nitrobenzimidazole group is reported. Starting from 2‐{4‐[(4‐ N , ‐dihydroxyethylamino)phenylazo]phenyl}‐5(6)‐nitrobenzimidazole, a combined theoretical experimental approach, including computations nonlinear activity (MNDO/AM1), X‐ray structural analysis synthetic strategies, has led to significant optimization (more than 50%) NLO related chromophores....
Abstract A new push–pull molecule, containing an (alkylamino)thiophene as electron donor and 1,3‐bis(dicyanomethylidene)‐2‐indenylindene acceptor, has been synthesized characterized in the solid state by X‐ray crystallography, solution UV/Vis NMR spectroscopy theoretical calculations. The quinoidal zwitterionic form of this compound was underscored both moderately polar solvents. Experimental analyses were also performed on two similar molecules, selectively chosen to vary basic chemical...
We report the synthesis and physico-chemical characterization, including molecular second order nonlinear optical properties by EFISH technique, of three new heterocycle based push–pull chromophores. Two chromophores contain five membered 1,3,4-oxadiazole ring, third a thiophene ring. The also azo or stilbene bridges between conjugated aromatic rings are functionalized for covalent incorporation into polymer chains. maximum observed μgβ is 1350 × 10−48 esu chromophore in conditions far from...
Abstract The synthesis and the chemical physical characterization of new photoluminescent (PL) chromophores polymers are reported. Chromophores (oligo‐PPV symmetric derivatives ending with amino groups) strong blue emitters a PL quantum yield ∼70% in dioxane solution. They have been used to prepare polyamides by reaction aliphatic acyl dichlorides which emitting non units alternated. properties synthesized evaluated solution reveal emission (PL ∼60%), To increase solubility these systems,...
We report on the patterning of free surface azo-based polymer films by means mass migration driven one- or two-photon absorption. A symmetric donor-acceptor-donor structured Y-shaped azochromophore is specifically synthesized to enhance absorption in polymer. The exposure film a focused laser beam results light-driven for both and absorptions. Features with subdiffraction resolution (250 nm) are realized dynamics investigated as function light dose. Furthermore, functional photonic...
In this paper we report the synthesis and characterization of a trihydroxylated nonlinear optical (NLO) azochromophore its functionalization with 2,4-tolylendiisocyanate (TDI) to give an amorphous mixture isomers that was used as starting compound for preparation cross-linked electro-optic (EO) thin films. An unedited type thermal cross-linking reaction used, exploiting reactivity isocyanate groups themselves in presence N,N-dimethylacetamide, without addition any hydroxylated comonomer...
A novel, easy, and cost-effective synthetic procedure is reported for the production of very highly regioregular poly[3-(4-alkoxyphenyl)thiophene]s by means oxidative coupling. Four copper complexes were synthesized used as catalysts to obtain polymers with higher regioregularity compared previous coupling methodologies in literature similar that obtained McCullough Rieke methods synthesis poly-3-alkylthiophenes. The was investigated UV–Visible characterization on polymer thin films 1H NMR...
Here we report the solid-state experimental and computational analysis of naphtho[2,3-c][1,2,5]thiadiazole (1) naphtho[2,3-c][1,2,5]selenadiazole (2) showing that three different crystal phases polymorphic 1 sole phase nonpolymorphic 2 are characterized by predominance some intermolecular motifs over others. In particular, interactions present in compounds, π···π, C–H···π, C–H···N, S···N, Se···N, hierarchically ranked, such a way polymorphism is observed, with combinations interactions,...
Abstract Summary: Condensation polymers based on two different NLO‐active chromophores, namely 2‐[4‐[(4‐ N , ‐dihydroxyethylamino)phenylazo]phenyl]‐5(6)‐nitrobenzimidazole (BZI) and 2‐[4‐(4‐ ‐dihydroxyethylamino)phenylazo]‐4,5‐dicyanoimidazole (IMI), have been synthesized their basic properties measured. The second order NLO of poled were investigated by SHG procedures at temperatures (35, 65 85 °C) exposure times. Resonance free d 33 coefficients ( λ = 1 368 nm) took values in the range...