1379668-75-3Relevant academic research and scientific papers
Porphyrin-phthalocyanine/pyridylfullerene supramolecular assemblies
Pereira, Ana M. V. M.,Hausmann, Anita,Tome, Joao P. C.,Trukhina, Olga,Urbani, Maxence,Neves, Maria G. P. M. S.,Cavaleiro, Jose A. S.,Guldi, Dirk M.,Torres, Tomas
experimental part, p. 3210 - 3219 (2012/05/20)
The synthesis and photophysical properties of several porphyrin (P)-phthalocyanine (Pc) conjugates (P-Pc; 1-3) are described, in which the phthalocyanines are directly linked to the β-pyrrolic position of a meso-tetraphenylporphyrin. Photoinduced energy- and electron-transfer processes were studied through the preparation of H2P-ZnPc, ZnP-ZnPc, and PdP-ZnPc conjugates, and their assembly through metal coordination with two different pyridylfulleropyrrolidines (4 and 5). The resulting electron-donor-acceptor hybrids, which were formed by axial coordination of compounds 4 and 5 with the corresponding phthalocyanines, mimicked the fundamental processes of photosynthesis; that is, light harvesting, the transduction of excited-state energy, and unidirectional electron transfer. In particular, photophysical studies confirmed that intramolecular energy-transfer resulted from the S2 excited state as well as from the S1 excited state of the porphyrins to the energetically lower-lying phthalocyanines, followed by an intramolecular charge-transfer to yield P-Pc.+·C60.-. This unique sequence of processes opens the way for solar-energy-conversion processes. Copyright
