Covalent Anchoring of Phthalocyanines on Silicon Dioxide Surfaces: Building up Mono- and Multilayers

Abstract : Ruthenium phthalocyanine (RuPc) monolayers were obtained by self-assembly on pyridino-functionalized metal oxide substrates, by coordination between the ruthenium ions and the pyridino groups. The substrates were functionalized by silanization with a bifunctional silane. Soluble ruthenium phthalocyanines, axially coordinated by labile benzonitrile groups, were used. A ligand exchange reaction was involved, one benzonitrile group being replaced by pyridine. These RuPc monolayers were characterized by transmission UV-vis spectroscopy, atomic force microscopy, polarization modulation infrared reflection-absorption spectroscopy, and time-of-flight secondary ion mass spectrometry. A second ligand exchange reaction allowed us to build RuPc bilayers by two different strategies. A mixed RuPc/cobalt porphyrin bilayer was also obtained
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Submitted on : Thursday, August 21, 2014 - 9:21:33 AM
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Vincent Huc, Franck Armand, Jean-Philippe Bourgoin, Serge Palacin. Covalent Anchoring of Phthalocyanines on Silicon Dioxide Surfaces: Building up Mono- and Multilayers. Langmuir, American Chemical Society, 2001, 17, pp.1928-1935. ⟨10.1021/la001237b⟩. ⟨cea-01056968⟩

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