Oxidation and photooxidation of sulfur-containing compounds in the presence of immobilized phthalocyanine complexes

Using Singlet Oxygen to Synthesize Natural Products and Drugs

“…Heterogeneous sensitizers are diphasic with two appeals (pun intended). They are generally less prone to photobleaching compared to homogeneous sensitizers, − and they are easy to separate from solution after reaction; examples include polymer-supported RB, secoporphyrazine, and fullerenes. − Self-sensitized photooxygenation reactions are also known, − where the substrate absorbs visible light to generate 1 O 2 , which reacts on itself; two examples are described in section in the context of natural products and drug synthesis.…”

Catalysis of organic pollutant photodegradation by metal phthalocyanines immobilized on TiO2@SiO2

“…All chemicals were of analytical reagent grade and were used without further purification. The pH of the solution was adjusted with either NaOH or HClO 4 . Deionized and doubly distilled water was used throughout this study.…”

“…Under these conditions, molecules of MPc are in the dispersed state and have good photocatalytic activity. Supports that eliminate aggregation of MPc on the surface have been reported in the literature, and include resin IRA900 [1], SiO 2 [4], Al 2 O 3 [5], and anionic clay [6].…”

Spectral studies of zinc octacarboxyphthalocyanine aggregation

“…Zinc phthalocyanines are also attractive sensitisers for photodegradation of pollutants, e.g. for the oxidation of chlorinated phenols [12,27], 4-nitrophenol [28] and sulphur containing compounds -sulphides and thiols [29,30]. Association of Pc molecules generally reduces their photocatalytic activity.…”