Excitation Energy Deactivation in Monodeprotonated Porphyrin

Excitation energy migration processes in various multi-porphyrin assemblies.

The electronic interactions and excitation energy transfer (EET) processes of a variety of multi-porphyrin arrays with linear, cyclic and box architectures have been explored. Directly meso-meso linked linear arrays (Z(N)) exhibit strong excitonic coupling with an exciton coherence length of approximately 6 porphyrin units, while fused linear arrays (T(N)) exhibit extensive π-conjugation over t...

Excitation energy migration processes in cyclic porphyrin arrays probed by single molecule spectroscopy.

By using single molecule fluorescence spectroscopy we have investigated the excitation energy migration processes occurring in a series of cyclic porphyrin arrays bearing a close proximity in overall architectures to the LH2 complexes in purple bacterial photosynthetic systems. We have revealed that the conformational heterogeneity induced by the structural flexibility in large cyclic porphyrin...

meso-2'-Linked porphyrin-BODIPY hybrids: synthesis and efficient excitation energy transfer.

Three meso-2'-linked porphyrin-BODIPY hybrids which contain one, two, and four BODIPY units (, , and ), respectively, were synthesized. Their photophysical properties were investigated by UV-vis and fluorescence spectroscopy, cyclic voltammetry, and femtosecond transient absorption spectroscopy, as well as by theoretical calculations. The electronic properties of the constituent chromophores we...

Chirally self-assembled porphyrin nanowires assisted by L-glutamide-derived lipid for excitation energy transfer.

An L-glutamide-functionalized tetraphenylporphyrin () has been newly synthesized and its self-assembling behavior in organic solvents is reported. forms nanofibrous assemblies in a dilute solution to show specific induced circular dichroism at the absorption band around the porphyrin moiety. It enables us to observe the meso-stable and stepwise H- and J-like hierarchical aggregations. Energy tr...

Intermediate - Energy Coulomb Excitation