H. Kunkely et A. Vogler, PHOTOREACTIVITY OF HEMATOPORPHYRIN IX-DICHLOROPLATINUM(II) - LIGHT-INDUCED RELEASE AND ACTIVATION OF FREE-BASE HEMATOPORPHYRIN, Inorganica Chimica Acta, 254(2), 1997, pp. 417-419
The complex Pt(II) (hematoporphyrinH(2))Cl-2 which contains free base
porphyrin as a bidentate ligand is light sensitive. In DMF a photosubs
titution takes place. The porphyrin is released with phi similar to 2
X 10(-3) at lambda(irr) = 405 nm. It is assumed that the photolysis or
iginates from a ligand field state which is populated from pi pi intr
aligand states. In a secondary photolysis the porphyrin undergoes a de
composition in agreement with previous results.