Excited-State Absorption and Ultrafast Relaxation Dynamics of Porphyrin, Diprotonated Porphyrin, and Tetraoxaporphyrin Dication
β Scribed by Marcelli, Agnese; Foggi, Paolo; Moroni, Laura; Gellini, Cristina; Salvi, Pier Remigio
- Book ID
- 127211423
- Publisher
- American Chemical Society
- Year
- 2008
- Tongue
- English
- Weight
- 174 KB
- Volume
- 112
- Category
- Article
- ISSN
- 1089-5639
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π SIMILAR VOLUMES
The synthesis is described of fixed distance triads consisting of zinc porphyrin (ZP), metal-free porphyrin (HP) and pyromellitimide (I) in which the ZP and HP moieties are bridged by a rigid 4,4'biphenylene spacer and related spacers, being held with dihedral angles defined by the torsional angle (
Singlet and triplet excited state data on two new core-modified expanded porphyrins and their protonated derivatives are reported. Absorption spectral studies indicate a gradual red shift of the absorption bands upon sulfur substitution into the core. The singlet lifetimes for expanded S~3~-sapphyri