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