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

One of the most important objectives in materials, chemical, and physical sciences is the
creation of large conjugated macrocycles with well‐defined shapes, since such molecules …

The aromatic character of porphyrins, which has significant chemical and biological
consequences, can be substantially altered by judicious modifications of the parent ring …

Modification of aromaticity is regarded as one of the most interesting and important research
topics in the field of physical organic chemistry. Particularly, porphyrins and their analogues …

Recently, expanded porphyrins have come to the forefront in the research field of
aromaticity, and been recognized as the most appropriate molecular system to study both …

Porphyrins and expanded porphyrins have attracted the attention of chemists for a long time
in view of their diverse applications in catalysis; as anion, cation, and neutral substrate …

Inspired by the chemistry of porphyrins, in the last decade, a new research area where
porphyrin analogues such as expanded, isomeric, and contracted porphyrins have been …

A new series of quadrupolar type two‐photon absorption (2PA) chromophores 3–9 bearing
a core arylamine‐[a, c] phenazine‐arylamine motif are synthesized in high yields. Palladium …

Porphyrins are tetrapyrrolic 18 π electron conjugated macrocycles with wide applications
that range from materials to medicine. Expanded porphyrins, synthetic analogues of …

For a series of rhodamine dyes, two-photon absorption (TPA) and two-photon fluorescence
(TPF) have been performed in different solvents. Solvent-dependent TPA spectra of these …