A Photophysical Investigation of Nickel Tetrapyrrole Macrocycles
The porphyrins are an important class of chromophores with high stability and efficient light absorption ability in the visible and near-infrared regions of the optical spectrum. They find uses in optoelectronics, magnetic materials, photoconductive materials, non-linear optical materials and photo tumor therapeutic drugs. Porphyrins have a set of highly delocalized ð-orbitals situated on the carbon-nitrogen framework. When such a ligand is coordinated to a centrally-located metal atom of the transition series, having incompletely filled d-orbitals (Ni, Co, Fe, Cu, etc.), the ð- and d-manifolds can interact. As a result the excited state deactivation dynamics becomes very dependent on the electronic nature of the central metal.
School:Bowling Green State University
School Location:USA - Ohio
Source Type:Master's Thesis
Keywords:femtosecond photophysics two pump one probe porphyrins benzoporphyrins
Date of Publication:01/01/2006