While investigating the destruction of the cyanobacterial hepatotoxin microcystin-LR in the presence of phycocyanin pigment via semiconductor photocatalysis, it became apparent that the pigment was catalysing the toxin decomposition. The mechanism of this process in terms of phycocyanin acting as a photo-oxygenation sensitizer via singlet oxygen and superoxide attack is explored. The absorption and fluorescence spectra of phycocyanin have been obtained and data on the properties of the excited state calculated. The established photo-oxygenation sensitizer rose bengal was also used as a catalyst for the photolytic decomposition of microcystin-LR to help elucidate the decomposition mechanism.
|Number of pages||8|
|Journal||Journal of Porphyrins and Phthalocyanines|
|Publication status||Published - Oct 1999|
|Event||2nd International Symposium on Phthalocyanines - Edinburgh, United Kingdom|
Duration: 01 Sep 1998 → …
- Singlet oxygen
ASJC Scopus subject areas