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

Authors :
Huc, V.
Armand, F.
Bourgoin, J. P.
Palacin, S.
Source :
Langmuir; March 2001, Vol. 17 Issue: 6 p1928-1935, 8p
Publication Year :
2001

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.

Details

Language :
English
ISSN :
07437463 and 15205827
Volume :
17
Issue :
6
Database :
Supplemental Index
Journal :
Langmuir
Publication Type :
Periodical
Accession number :
ejs1142425