Browsing by Author "Mitcov, Dmitri"

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    Sinteza şi cercetarea unor copolimeri din n-vinilcarbazol cu alchene superioare [Articol]
    (CEP USM, 2008) Robu, Ştefan; Mitcov, Dmitri; Bulmaga, Petru; Dragalina, Galina; Barbă, Nicanor
    The synthesis and investigations of binary N-vinylcarbazole copolymers with higher alkenes and ternary N-vinylcarbazole copolymers with oct-1-ene, hexadec-1-ene and vinylacetate are presented in this paper. The structure of synthesized copolymers was determined using IR and 1H NMR spectroscopies and elemental analysis. Copolymerization constants were determined using UV spectroscopy. The results of copolymer thin films, sensitized with iodoform, cross-linking after UV and laser ( λ = 0,42 μm) irradiation are presented. It was determined that thin films deposited from these copolymers cross-link 1,5–2,0 times faster than other carbazole containing copolymers known in literature. In coherent He-Cd (λ = 0,42 μm) laser light were recorded high quality holograms, that allow to recommend these fotorezistive materials as optical information recording media.