ABSTRACT
Tetrapyrrolic macrocycles represent a class of compounds which
are widespread in nature. Within the large family of porphyrinoid
systems, porphyrins (Pors) [1] and their synthetic analogs phthalo-
cyanines (Pcs) [2] deserve a special mention due to their unique and
intriguing physicochemical properties. Both macrocycles, in fact,
share important similarities such as a planar, 18-π -electron aro-
matic system and exhibit remarkable optical and electronic proper-
ties, which have to prompted their utilization in various disciplines
ranging frommaterials science [3], catalysis [4], photovoltaics [5], or
medicine [6] to mention a few.
