Academic Journals Database
Disseminating quality controlled scientific knowledge

Zinc(II) and copper(II) complexes with pheophytin and mesoporphyrin and their stability to UV-B irradiation: Vis spectroscopy studies

ADD TO MY LIST
 
Author(s): Zvezdanović Jelena B. | Marković Dejan Z. | Milenković Sanja M.

Journal: Journal of the Serbian Chemical Society
ISSN 0352-5139

Volume: 77;
Issue: 2;
Start page: 187;
Date: 2012;
VIEW PDF   PDF DOWNLOAD PDF   Download PDF Original page

Keywords: pheophytin | mesoporphyrin | heavy metal | complexes | UV-B kinetics

ABSTRACT
Stability of Zn(II) and Cu(II) complexes of porphyrin derivatives (pheophytin and mesoporphyrin) to UV-B -irradiation has been studied by absorbance spectroscopy in 95% ethanol. The chosen porphyrins as well as their heavy metal complexes undergo photochemical decomposition obeying first-order kinetics. In general, pheophytin is more stable than mesoporphyrin to UV-B irradiation. On the other hand, stability of Zn(II)-complex is smaller than Cu(II)-complex both for pheophytin and mesoporphyrin; however while Cu(II)-complex with pheophytin is more stable than the one with mesoporphyrin, with Zn(II)-complex the situation is vice versa.

Tango Jona
Tangokurs Rapperswil-Jona

     Save time & money - Smart Internet Solutions