0000000001302629
AUTHOR
Norberto Masciocchi
showing 26 related works from this author
Correlation between Molecular Packing and Optical Properties in Different Crystalline Polymorphs and Amorphous Thin Films of mer -Tris(8-hydroxyquino…
2000
International audience
Highly Stable Thin Films Based on Novel Hybrid 1D (PRSH)PbX3 Pseudo-Perovskites
2021
In this study, the structure and morphology, as well as time, ultraviolet radiation, and humidity stability of thin films based on newly developed 1D (PRSH)PbX3 (X = Br, I) pseudo-perovskite materials, containing 1D chains of face-sharing haloplumbate octahedra, are investigated. All films are strongly crystalline already at room temperature, and annealing does not promote further crystallization or film reorganization. The film microstructure is found to be strongly influenced by the anion type and, to a lesser extent, by the DMF/DMSO solvent volume ratio used during film deposition by spin-coating. Comparison of specular X-ray diffraction and complementary grazing incidence X-ray diffract…
Proton sponge lead halides containing 1D polyoctahedral chains
2021
Hybrid one-dimensional lead halides, containing the protonated 1,8-bis(dimethylamino)naphthalene moiety (C14H19N2, monoprotonated "proton sponge"), were prepared by simple one-pot methods and investigated in terms of crystal structure, morphology, thermal stability and electronic properties. The as-precipitated (C14H19N2)PbBr3 and (C14H19N2)PbI3 species are isostructural and crystallize in the orthorhombic Pbca space group, resulting in 1D crystal phases with ([PbX3](-))(infinity) chains (built by face-sharing [PbX6] octahedra; X = Br, I), among which the (C14H19N2)(+) cations are inserted. The two compounds display complete miscibility in the solid state: both (C14H19N2)PbI2Br and (C14H19N…
Heterovalent BiIII/PbII ionic substitution in one-dimensional trimethylsulfoxonium halide pseudo-perovskites (X = I, Br)
2021
We report on the synthesis and characterization of novel lead and bismuth hybrid (organic-inorganic) iodide and bromide pseudo-perovskites (ABX3) containing the trimethylsulfoxonium cation (CH3)3SO+ (TMSO) in the A site, Pb/Bi in the B site, and Br or I as X anions. All of these compounds are isomorphic and crystallize in the orthorhombic Pnma space group. Lead-based pseudo-perovskites consist of one-dimensional (1D) chains of face-sharing [PbX6] octahedra, while in the bismuth-based ones, the chains of [BiX6] are interrupted, with one vacancy every third site, leading to a zero-dimensional (0D) local structure based on separated [Bi2I9]3- dimers. Five solid solutions for the iodide with di…
Two-Dimensional Polytypism of “Crystalline” (C5Me5)ReO3
1996
Crystals of Cp*ReO3 present a rare case of two-dimensional polytypism. They consist of a polytypic packing (in the bc plane) of ordered polar chains of three-legged piano-stool Cp*ReO3 molecules (stacked head-to-tail along the a axis). The two-dimensional polytypism arises from the possibility of building a similar motif both with 2-fold screw axes and inversion centers as packing operators, i.e. from the possibility of packing together neighboring chains of equal or different polarity.
Structural and magnetic characterization of Pd nanoparticles encapsulated in apoferritin
2010
Pd nanoparticles exhibiting permanent magnetism at room temperature have been prepared within the apoferritin cavity. Pd nanoparticles in air and under an inert atmosphere were synthesized to study the influence of the aerobic and anaerobic conditions in the final magnetic properties. The surface of nanoparticles as well as the type of crystalline phase could determine the magnetic properties. X-ray powder diffraction, including Debye-function analysis, transmission electronic microscopy, and magnetization measurements have been used for characterizing the nanoparticles.
Modeling bismuth insertion in 1D hybrid lead halide TMSO(Pb x Bi y )I3 pseudo-perovskites
2022
Abstract The structures of the disordered 1D (pseudo-)perovskites of general TMSO(Pb x Bi y )I3 formulation [TMSO = (CH3)3SO+], obtained by doping the TMSOPbI3 species with Bi3+ ions, are investigated through the formulation of a statistical model of correlated disorder, which addresses the sequences of differently occupied BI6 face-sharing octahedra (B = Pb, Bi or vacant site) within ideally infinite [(BI3)−] n chains. The x-ray diffraction patterns simulated on the basis of the model are matched to the experimental traces, which show many broad peaks with awkward (nearly trapezoidal) shapes, under the assumption that the charge balance is fully accomplished within each chain. The analysis…
Long-Term Stability of TiS2–Alkylamine Hybrid Materials
2022
Layered TiS2 intercalated with linear alkylamines has recently attracted significant interest as a model compound for flexible n-type thermoelectric applications, showing remarkably high power factors at room temperature. The thermal and, particularly, environmental stability of such materials is, however, a still an open challenge. In this paper, we show that amine-intercalated TiS2 prepared by a simple mechanochemical process is prone to chemical decomposition through sulfur exsolution, and that the presence of molecular oxygen is likely to mediate the decomposition reaction. Through computational analysis of the possible reaction pathways, we propose that Ti-N adducts are formed as a con…
Hexacyanocobaltate(III) Anions as Precursors of Co(II)−Ni(II) Cyano-Bridged Multidimensional Assemblies: Hydrothermal Syntheses, Crystal and Powder …
2005
Three novel cyanide-bridged heterobimetallic coordination polymers have been synthesized by hydrothermal routes, in superheated water solutions, by using K3[Co(CN)6], NiCl2.6H2O, and alpha-diimine ligands: [Ni(CN)4Co(phen)] (1; phen = 1,10-phenanthroline), [Ni(CN)4Co(2,2'-bipy)] (2; 2,2'-bipy = 2,2'-bipyiridine), and [Ni(CN)4Co(2,2'-bipy)2] (3). The isostructural compounds 1 and 2 contain a two-dimensional network with Co(II) centers octahedrally coordinated by one chelating 2,2'-bipy ligand and four cyanide groups of four distinct [Ni(CN)4]2-, through crystallographically equivalent, bridging units. Compound 3 contains one-dimensional zigzag chains in which the Co(II) ion is coordinated by…
The structural versatility of proton sponge bismuth halides
2022
Hybrid halometalates containing lead, tin, bismuth and antimony and organic cations have recently shown a bevy of interesting photophysical properties. Aiming at finding chemically stable and thermally inert species, three halobismutate species of this class, crystallized with proton sponge-derived cations (PRSH), have been isolated as microcrystalline powders by mixing 1,8-bis(dimethylamino)-naphthalene (proton sponge, or PRS) and bismuth oxide in concentrated HX acids (X = Cl, Br and I). The two isomorphous (PRSH)3Bi2X9 (X = Br, I) species, containing isolated [Bi2X9]3- anions, are triclinic at room temperature and convert upon heating into a monoclinic structure through a displacive …
Ultralow thermal conductivity in 1D and 2D imidazolium-based lead halide perovskites
2021
Low-dimensional hybrid organic–inorganic metal halide perovskites are rapidly emerging as a fascinating sub-class of the three-dimensional parent structures, thanks to their appealing charge and thermal transport properties, paired to better chemical and thermal stabilities. Extensive investigations of the thermal behavior in these systems are of paramount relevance to understand their optoelectronic and thermoelectric applications. Herein, we present a complete thermophysical characterization of imidazolium lead iodide, (IMI)PbI3, a 1D pseudo-perovskite with chains of face-sharing octahedra, and histammonium lead iodide, (HIST)PbI4, a 2D layered perovskite with corner-sharing octahedra. Up…
Conformationally rigid molecular and polymeric naphthalene-diimides containing C6H6N2 constitutional isomers
2021
Organic thin films based on naphthalenediimides (NDIs) bearing alkyl substituents have shown interesting properties for application in OLEDs, thermoelectrics, solar cells, sensors and organic electronics. However, the polymorphic versatility attributed to the flexibility of alkyl chains remains a challenging issue, with detrimental implications on the performances. Aryl analogues containing C6H6N2 constitutional isomers are herein investigated as one of the possible way-out strategies. The synthesis of molecular and polymeric species is described, starting from naphthaleneteracarboxyldianhydride with isomeric aromatic amines and hydrazine. The materials are fully characterized by spectrosco…
CCDC 2059772: Experimental Crystal Structure Determination
2022
Related Article: Vincenzo Mirco Abbinante, Gonzalo García-Espejo, Gabriele Calabrese, Silvia Milita, Luisa Barba, Diego Marini, Candida Pipitone, Francesco Giannici, Antonietta Guagliardi, Norberto Masciocchi|2021|J.Mater.Chem.C|9|10875|doi:10.1039/d1tc00564b
CCDC 2069442: Experimental Crystal Structure Determination
2021
Related Article: Candida Pipitone, Francesco Giannici, Antonino Martorana, Gonzalo Garc��a-Espejo, Silvia Carlotto, Maurizio Casarin, Antonietta Guagliardi, Norberto Masciocchi|2021|J.Phys.Chem.C|125|11728|doi:10.1021/acs.jpcc.1c02571
CCDC 2153969: Experimental Crystal Structure Determination
2022
Related Article: Gonzalo García-Espejo, Candida Pipitone, Francesco Giannici, Norberto Masciocchi|2022|J.Solid State Chem.|312|123165|doi:10.1016/j.jssc.2022.123165
CCDC 2012750: Experimental Crystal Structure Determination
2021
Related Article: Candida Pipitone, Francesco Giannici, Antonino Martorana, Federica Bertolotti, Gabriele Calabrese, Silvia Milita, Antonietta Guagliardi, Norberto Masciocchi|2021|CrystEngComm|23|1126|doi:10.1039/D0CE01695K
CCDC 2059771: Experimental Crystal Structure Determination
2022
Related Article: Vincenzo Mirco Abbinante, Gonzalo García-Espejo, Gabriele Calabrese, Silvia Milita, Luisa Barba, Diego Marini, Candida Pipitone, Francesco Giannici, Antonietta Guagliardi, Norberto Masciocchi|2021|J.Mater.Chem.C|9|10875|doi:10.1039/d1tc00564b
CCDC 2153967: Experimental Crystal Structure Determination
2022
Related Article: Gonzalo García-Espejo, Candida Pipitone, Francesco Giannici, Norberto Masciocchi|2022|J.Solid State Chem.|312|123165|doi:10.1016/j.jssc.2022.123165
CCDC 2069441: Experimental Crystal Structure Determination
2021
Related Article: Candida Pipitone, Francesco Giannici, Antonino Martorana, Gonzalo Garc��a-Espejo, Silvia Carlotto, Maurizio Casarin, Antonietta Guagliardi, Norberto Masciocchi|2021|J.Phys.Chem.C|125|11728|doi:10.1021/acs.jpcc.1c02571
CCDC 2153968: Experimental Crystal Structure Determination
2022
Related Article: Gonzalo García-Espejo, Candida Pipitone, Francesco Giannici, Norberto Masciocchi|2022|J.Solid State Chem.|312|123165|doi:10.1016/j.jssc.2022.123165
CCDC 2069440: Experimental Crystal Structure Determination
2021
Related Article: Candida Pipitone, Francesco Giannici, Antonino Martorana, Gonzalo Garc��a-Espejo, Silvia Carlotto, Maurizio Casarin, Antonietta Guagliardi, Norberto Masciocchi|2021|J.Phys.Chem.C|125|11728|doi:10.1021/acs.jpcc.1c02571
CCDC 2069439: Experimental Crystal Structure Determination
2021
Related Article: Candida Pipitone, Francesco Giannici, Antonino Martorana, Gonzalo Garc��a-Espejo, Silvia Carlotto, Maurizio Casarin, Antonietta Guagliardi, Norberto Masciocchi|2021|J.Phys.Chem.C|125|11728|doi:10.1021/acs.jpcc.1c02571
CCDC 2059770: Experimental Crystal Structure Determination
2022
Related Article: Vincenzo Mirco Abbinante, Gonzalo García-Espejo, Gabriele Calabrese, Silvia Milita, Luisa Barba, Diego Marini, Candida Pipitone, Francesco Giannici, Antonietta Guagliardi, Norberto Masciocchi|2021|J.Mater.Chem.C|9|10875|doi:10.1039/d1tc00564b
CCDC 2012751: Experimental Crystal Structure Determination
2021
Related Article: Candida Pipitone, Francesco Giannici, Antonino Martorana, Federica Bertolotti, Gabriele Calabrese, Silvia Milita, Antonietta Guagliardi, Norberto Masciocchi|2021|CrystEngComm|23|1126|doi:10.1039/D0CE01695K
CCDC 2012752: Experimental Crystal Structure Determination
2021
Related Article: Candida Pipitone, Francesco Giannici, Antonino Martorana, Federica Bertolotti, Gabriele Calabrese, Silvia Milita, Antonietta Guagliardi, Norberto Masciocchi|2021|CrystEngComm|23|1126|doi:10.1039/D0CE01695K
CCDC 2059769: Experimental Crystal Structure Determination
2022
Related Article: Vincenzo Mirco Abbinante, Gonzalo García-Espejo, Gabriele Calabrese, Silvia Milita, Luisa Barba, Diego Marini, Candida Pipitone, Francesco Giannici, Antonietta Guagliardi, Norberto Masciocchi|2021|J.Mater.Chem.C|9|10875|doi:10.1039/d1tc00564b