Investigation of photocatalysts property of zinc octacarboxy phthalocyanine [ZnPc(COOH)8] as a photosensitizer in 4-nitrophenol degradation and its anti-allergic activity

4-nitrophenol is an organic compound which has been utilized in different industries such as pharmaceutical, textile and etc. human and animal’s health are in danger when it’s found in water [1]. Photodegradation by porphyrins and phthalocyanines has been studied as a method to degrade this pollutant from water, these are known as good photosensitizers due to π-conjugated, aromatic, rigid and flat structures as well as wide light absorption [2]. In this investigation porphyrins and phthalocyanines degraded 4-nitrophenol in the same pH, temperature and solution. The mentioned compounds are classified into two groups; Tetra phenyl porphyrins (I) and Phthalocyanines (II) which their biological properties, mechanisms, and toxicities are evaluated through PASS software. Biological activities that are higher than 50% and toxicities which are lower than 50% are considered to find out better compound for photodegradation of 4-nitrophenol. By this explanation, structures number 8, 11, 12, and 15 with high activity probability (Pa) are better photocatalysts among all of the structures which are shown in the table. These four compounds can be qualified by the quantity of effects. Each one that has more active from the point of view of biological activities, mechanisms, and inactive toxicities, is the best one. The vantage of these four compound can be shown as follows; ZnPc(COOH)8 > MgPc > ZnPcCl16 > ZnPc(NO2)4. Pa for photosensitivity, anti-allergy, benzoylformate decarboxylase inhibitory and Anthranilate-COA ligase inhibitory of zinc octacarboxy phthalocyanine is 71.4%, 55%, 82.9%, and 70.6% respectively without toxicity. Finally, ZnPc(COOH)8 was selected as a good photosensitizer and anti-allergic.