Asymmetrical zinc phthalocyanine conjugated to various nanomaterials for applications in phototransformation of organic pollutants and photoinactivation of bacteria

Zinc phthalocyanine (ZnPc) complexes are linked to metallic nanoparticles covalently via amide and ester bonds. The photocatalytic activity of the conjugates of ZnPc complexes with NiWO4, Ag2WO4, CoWO4 and Ag-Fe3O4 nanoparticles are evaluated for photodegradation of methylene blue, tetracycline, and diben-zothiophene. The photocatalytic efficiencies of the prepared phthalocyanine complexes increased in the presence of nanoparticles. This work also reports on the photodynamic antimicrobial chemotherapy activ-ity of these materials against Staphylococcus aureus (S. aureus) bacteria. The results indicate that Ag2WO4 based nanoconjugates exhibit high antimicrobial activity with higher log reduction compared to NiWO4, CoWO4 and Ag-Fe3 O 4 based materials.(c) 2022 Elsevier B.V. All rights reserved.

Automated summary

Zinc phthalocyanine complexes are covalently linked to metallic nanoparticles through amide and ester bonds. The photocatalytic activity of these conjugates is evaluated for the degradation of methylene blue, tetracycline, and diben-zothiophene. The results show that the prepared phthalocyanine complexes exhibit enhanced photocatalytic efficiency in the presence of nanoparticles. Furthermore, the conjugates also demonstrate promising photodynamic antimicrobial chemotherapy activity against Staphylococcus aureus bacteria, with Ag2WO4-based nanoconjugates showing the highest antimicrobial activity compared to other materials.