Investigation of Zinc bis(1,4-didecylbenzo)-bis(2,3-pyrido) Porphyrazine for Application as Photosensitizer in Photodynamic Therapy of Cancer

Table 2

Potentials of quaternized zinc bis(1,4-didecylbenzo)-bis(2,3-pyrido) porphyrazine in DMF with tetrabutylammonium perchlorate.Potentials of reversible wave are midpoint potential of anodic to cathodic peaks for each couple.

	Potential (V versus Ag/AgCl)
Compound	Reduction (E pc)				Oxidation (E pa)
1	–0.94^*	–0.62^*	–0.29^*	–0.03^*	0.32^*	0.48^*	0.97^*
ΔE ^**
2	–0.75^*	–0.52^*	–0.12^*		0.96^*	1.28^*
ΔE ^**
3	–0.83	–0.51^*	–0.05^*		0.25^*	1.05^*
ΔE ^**	0.14
4	–1.15^*	–0.77	–0.14^*	–0.05^*	0.50^*
ΔE ^**		0.11

^*Irreversible peak.
^**The anodic peak to cathodic peak separation for reversible couple.