Background Photodynamic antimicrobial therapy (PACT) is proposed as a topical, non-invasive approach suitable for treatment of locally occurring infection. Research of photosensitizers, (PS) as well as their development, is aimed at finding effective antimicrobial substances which would have a broad-spectrum potency. The aim of this paper is to evaluate the antimicrobial effect of phthalocyanine (Pc) derivatives.
