The formation and spectroscopic properties of several metalloporphyrin−
metallophthalocyanine complexes have been investigated. The complexes consist of
negatively charged tetrasulfonatophenyl or tetracarboxyphenyl porphyrins in ion pairs with
positively charged crown ether substituted metallophthalocyanines. The positive charge was
delivered to the modified phthalocyanine molecules by inserting potassium ions into the
crown ether cavities. The complexes were formed by mixing the constituent tetrapyrrole …

Femtosecond transient absorption studies were conducted for self-assemblies between
oppositely charged metal-substituted 18-crown-6 tetrasubstituted phthalocyanines (McrPc)
and metal-substituted meso-(4-sulfophenyl)-porphine (MTPPS) or meso-(4-carboxylphenyl)-
porphine (MTPPC). Excitation could be carried out at 400 nm (Ti− Sapphire second
harmonic), which populates the porphyrin-localized S2 state or directly into the CT band
(690), and was achieved by changing the pump pulse wavelength with an optical parametric …