bacteriopheophytin has been researched along with titanium-dioxide* in 1 studies
1 other study(ies) available for bacteriopheophytin and titanium-dioxide
| Article | Year |
|---|---|
Production of bacteriopurpurin-18 phytyl ester from bacteriopheophytin a via allomerization by contact with titanium oxides in the presence of molecular oxygen.
Incubation of bacteriopheophytin (BPhe) a, which was a demetalated pigment of bacteriochlorophyll a in photosynthetic bacteria, in CH2Cl2 in the presence of TiO2 particles with bubbling O2 in the dark produced a pigment absorbing 814nm. Detailed characterization of the novel pigment isolated from the CH2Cl2 suspension revealed that bacteriopurpurin-18 phytyl ester possessing an anhydride-type six-membered exocyclic E-ring was majorly formed by the treatment with TiO2 particles under oxygenic conditions. Oxidation of the bacteriochlorin ring in BPhe a, namely formations of derivatives of 3-acetyl pheophytin a and 3-acetyl protopheophytin a, can barely be detected through the conversion processes. Topics: Catalysis; Esters; Methylene Chloride; Oxidation-Reduction; Oxygen; Pheophytins; Porphyrins; Spectroscopy, Fourier Transform Infrared; Titanium | 2015 |