Synthesis of a monofunctional phthalocyanine on silica

✍ Scribed by Andreas Hirth; Abdol Khezer Sobbi; Dieter Wöhrle

• Publisher: John Wiley and Sons
• Year: 1997
• Tongue: English
• Weight: 167 KB
• Volume: 01
• Category: Article
• ISSN: 1088-4246
• DOI: 10.1002/(sici)1099-1409(199707)1:3<275::aid-jpp30>3.0.co;2-q

✦ Synopsis

Silica of different surface area and grain size modified by aminopropyl groups reacted with 4-(3,4-dicyanophenoxy)benzoic acid chloride. The reaction of these benzamidophenoxydicarbonitrile modified silica gels with 4-(4-tert-butyl-phenoxy)-1,2-benzenedicarbonitrile in the presence of a zinc(II) salt results in covalently bonded phthalocyanine zinc(II) complexes with a loading between 1.8 × 10^−5^ and 1.7 × 10^−6^ mol g ^−1^ silica. UV/vis reflectance spectra show that the phthalocyanines on the surface exist in a monomeric state. Cleavage at the amide bond between the silica and the phthalocyanine led to the corresponding monocarboxylic acid phthalocyanine derivative.