G. Zheng et al., SYNTHESES AND SPECTROSCOPIC STUDIES OF SOME NOVEL PORPHYRIN-PYROPHEOPHORBIDE DIMERS AND TRIMERS WITH FIXED DISTANCES, Tetrahedron letters, 38(14), 1997, pp. 2409-2412
Syntheses and spectroscopic properties of pyropheophorbide-porphyrin d
imers and a bis-pyropheophorbide-porphyrin trimer are described. Fluor
escence spectroscopic data of the oligomers reveal that the macrocycle
s in the systems are only weakly coupled. (C) 1997 Elsevier Science Lt
d.