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  1. No Access

    Chapter

    Photodegradation of Organic Photochromes

    V. Malatesta in Organic Photochromic and Thermochromic Compounds (2002)

  2. No Access

    Article

    A comprehensive kinetic, thermodynamic and photochemical study of some spiro-indoline-oxazines

    The thermoreversible photochromic reaction of spiro-indoline-oxazines to photo-merocyanines has been studied by stationary spectrophotometric techniques. Two methods are described for determining the molar abs...

    G Favaro, V Malatesta, U Mazzucato… in Proceedings of the Indian Academy of Scien… (1995)

  3. No Access

    Article

    A solid-state (CP-MAS)13C nuclear magnetic resonance study of selected photo(thermo)chromic spiro-(indolinonaphthoxazine)s

    Liquid and solid-state13C NMR data are reported for three photo(thermo)chromic spiro-(indolinonaphthoxazine)s,1–3. The isotropic13C chemical shifts are almost identical in the solid state and in solution. Therefo...

    V. Malatesta, P. Allegrini, L. L. Montanari in Applied Magnetic Resonance (1994)

  4. No Access

    Chapter and Conference Paper

    Laser Induced Surface Modification of Polymers

    It has been shown that irradiation with ultraviolet light results in surface modification of polymeric materials due mostly to photooxidation, photografting and/or photodegradation. Depending on the wavelength...

    V. Malatesta in High Energy Density Technologies in Materials Science (1990)

  5. No Access

    Article

    A study of the chemical and morphological alterations of PS and PC surfaces induced by excimer laser treatments

    The effect of laser irradiation on polystyrene (PS) and bisphenol-A polycarbonate (PC) has been studied by X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), optical microscopy and sur...

    E. Occhiello, F. Garbassi, V. Malatesta in Journal of Materials Science (1989)

  6. No Access

    Chapter

    The Involvement of Free Radicals in the Metabolism of Drugs

    The cytotoxycity of the anthracycline antitumour drugs results from multiple biochemical alterations of the cellular organization at several levels. The expression of the cytotoxic effects is subsequent to the...

    V. Malatesta in Free Radicals in Synthesis and Biology (1989)

  7. No Access

    Chapter and Conference Paper

    Studies on Some Trifluoromethyl Nitroxide Radicals by EPR Spectroscopy

    The hyperfine splitting by 17O in (CF3)2N170• is 23.6 G which is appreciably larger than the 19.4 G reported for [(CH3)3C] 2N170• and indicates that the former radical has a relatively high spin density on oxygen...

    C. Chatgilialoglu, K. U. Ingold, V. Malatesta in Fast Reactions in Energetic Systems (1981)

  8. No Access

    Chapter and Conference Paper

    Quantum Mechanical Tunneling in Free Radical Reactions

    Examples of free radical reactions are described for which convincing evidence for quantum-mechanical tunneling has been reported. They include: H-atom abstraction reactions by thermalized methyl radicals and ...

    V. Malatesta, K. U. Ingold, C. Chatgilialoglu in Fast Reactions in Energetic Systems (1981)