Browsing by Author "Macovez, Roberto"Més informacióMés informació

Now showing items 21-29 of 29

  • Solid state physicochemical properties and applications of organic and metallo-organic fullerene derivatives 

    Mitsari, Efstratia; Romanini, Michela; Manesh, Zachariah; Macovez, Roberto (2016)
    Article
    Open Access
    We review the fundamental properties and main applications of organic derivatives and complexes of fullerenes in the solid-state form. We address in particular the structural properties, in terms of crystal structure, ...

  • Structure and reorientational dynamics of 1-F-adamantane 

    Ben Hassine, Bacem; Negrier, Philippe; Romanini, Michela; Barrio Casado, María del; Macovez, Roberto; Kallel, A.; Mondieig, Denise; Tamarit Mur, José Luis (2016-03-17)
    Article
    Open Access
    The polymorphism and the dynamics of a simple rigid molecule (1-fluoro-adamantane) have been studied by means of X-ray powder diffraction and broadband dielectric spectroscopy. At temperatures below the melting point, the ...

  • Surface hubbard U of alkali fullerides 

    Macovez, Roberto (2011)
    Article
    Restricted access - publisher's policy
    Wereport a combined photoemission spectroscopy (PES) and inverse photoemission spectroscopy (IPES) study of distilled, phase pure films of C60 and the monomeric fullerides Cs6C60, Cs4C60 and fcc RbC60. The separation ...

  • Thermodynamic scaling of the dynamics of a strongly hydrogen-bonded glass-former 

    Romanini, Michela; Barrio Casado, María del; Macovez, Roberto; Ruíz Martín, María Dolores; Capaccioli, Simon; Tamarit Mur, José Luis (Macmillan Publishers, 2017-12-01)
    Article
    Open Access
    We probe the temperature- and pressure-dependent specific volume (v) and dipolar dynamics of the amorphous phase (in both the supercooled liquid and glass states) of the ternidazole drug (TDZ). Three molecular dynamic ...

  • Tuning the Kinetic Stability of the Amorphous Phase of the Chloramphenicol Antibiotic 

    Valenti, Sofia; Romanini, Michela; Franco García, María Lourdes; Puiggalí Bellalta, Jordi; Tamarit Mur, José Luis; Macovez, Roberto (2018-10-23)
    Article
    Open Access
    We employ broadband dielectric spectroscopy to study the relaxation dynamics and crystallization kinetics of a broad-spectrum antibiotic, chloramphenicol, in its supercooled liquid form. Two dynamic processes are observed: ...

  • Ultraslow dynamics of water in organic molecular solids 

    Macovez, Roberto; Mitsari, Efstratia; Zachariah, Manesh; Romanini, Michela; Zygouri, Panagiota; Gournis, Dimitrios; Tamarit Mur, José Luis (2014-03-06)
    Article
    Restricted access - publisher's policy
    The relaxation dynamics of water in hygroscopic molecular solids is probed by broadband dielectric spectroscopy in the temperature range from 200 to 450 K. Evidence is found for three types of dynamic processes. The ...

  • Variable-range electron hopping, conductivity cross-over and space-charge relaxation in C60Br6 

    Manesh, Zachariah; Romanini, Michela; Zygouri, Panagiota; Gournis, Dimitrios; Tamarit Mur, José Luis; Barrio Casado, María del; Macovez, Roberto (2016-07-01)
    Article
    Open Access
    Dielectric spectroscopy is employed to probe the frequency-dependent conductivity and dipolar dielectric response of solid C60Br6. Below approximately 215 K, charge conduction is electronic and well described by Mott's ...

  • Water-triggered conduction and polarization effects in a hygroscopic fullerene salt 

    Zachariah, Manesh; Tripathi, Pragya; Mitsari, Efstratia; Romanini, Michela; Zygouri, Panagiota; Gournis, Dimitrios; Barrio Casado, María del; Tamarit Mur, José Luis; Macovez, Roberto (2014)
    Conference lecture
    Open Access
    Impedance spectroscopy is employed to probe the frequency-dependent conductivity and dielectric response of the crystalline C60O24Na24 fulleride, both in its pure form obtained by heating to 473 K and in its bulk-hydrate ...

  • Water-Triggered Conduction Mediated by Proton Exchange in a Hygroscopic Fulleride and Its Hydrate 

    Zachariah, Manesh; Mitsari, Efstratia; Romanini, Michela; Zygouri, Panagiota; Gournis, Dimitrios; Barrio Casado, María del; Tamarit Mur, José Luis; Macovez, Roberto (2015-01-08)
    Article
    Open Access
    Impedance spectroscopy is employed to probe the impact of water on the dc conductivity and ac dielectric response of the polycrystalline C-60(ONa)(24) fulleride, both in its bulk-hydrate form, stable only below 370 K, and ...