Porphyrins and phthalocyanines have outstanding chemical and thermal stability. The
macrocyclic structure and chemical reactivity of tetrapyrroles offers architectural flexibility …

Electron and energy transfer reactions in covalently connected donor–bridge–acceptor
assemblies are strongly dependent, not only on the donor–acceptor distance, but also on …

We present the two-photon absorption (2PA) spectra of a series of conjugated porphyrin
dimers and show that they possess extremely large intrinsic (femtosecond) peak 2PA cross …

Two-photon absorption spectra (2PA) of a series of conjugated dimers and the
corresponding monomer were studied in the near-IR region. All of the dimers show very …

Donor–bridge–acceptor (DBA) systems, either as supermolecules or on surfaces, have been
extensively studied with respect to long-range electron (ET) and excitation energy (EET) …

We present, for the first time, unambiguous spectroscopic evidence of strong cooperative
enhancement of two-photon absorption (TPA) in a series of dendritic macromolecules. The …

Electron transfer over long distances is important for many future applications in molecular
electronics and solar energy harvesting. In these contexts, it is of great interest to find …

We present the two-photon absorption (2PA) spectra of a series of conjugated porphyrin
oligomers containing N= 2, 4, 8, and ca. 13 monomer units, meso− meso connected with …

Two new series of unsymmetrically β-functionalized porphyrins, MTPP (NO2) MA (1M),(MA=
methyl acrylate) and MTPP (NO2) MB (2M)(MB= mono-benzo)(where M= 2H, Co (II), Ni (II) …

Addition of 4, 4 '-bipyridyl to a solution of a meso− meso butadiyne-linked conjugated zinc
porphyrin polymer in chloroform results in self-assembly of a double-strand ladder complex …