Investigation of the biological properties of water soluble quinoline substituted phthalocyanines

The interaction between water soluble quinoline substituted phthalocyanines (Pcs) 1Q and 2Q and BSA (bovine serum albumin) was investigated. The binding modes of 1Q and 2Q to BSA was investigated by UV–vis and fluorescence titration experiments. The quenching effect of Pcs 1Q and 2Q on the fluorescence of Acridine Orange (AO)-BSA complex was determined. The results indicated that these water soluble phthalocyanines (Pcs) can bind to BSA and can be transported in circulatory system. Water soluble nature of both Pcs enhances cellular uptake and these dyes can be used in photodynamic theraphy (PDT).

The interaction between water soluble quinoline substituted phthalocyanines (Pcs) 1Q and 2Q and BSA (bovine serum albumin) was investigated. The binding modes of 1Q and 2Q to BSA was investigated by UV–vis and fluorescence titration experiments. The quenching effect of quaternized Pcs 1Q and 2Q on the fluorescence of Acridine Orange (AO)-BSA complex was determined. The results indicated that these water soluble phthalocyanines (Pcs) can bind to BSA and can be transported in circulator system.Figure optionsDownload as PowerPoint slideHighlights
► The binding of 1Q and 2Q to BSA were investigated.
► Fluorescence measurements were used to determine the binding mode.
► The quenching effect of 1Q and 2Q on the fluorescence of BSA-AO was investigated.