ABSTRACT
Over the past decades, multiporphyrin arrays have been envis-
aged and prepared using several types of shorter linkers that are
suitable for preparing linear or extended architectures via a
meso position attachment. Various synthetic strategies involve the exploitation of a wide range of linkage motifs, such as butadiyne,
biphenyl, ethene, ethyne, enyne, furan, hexatriene, naphthalene,
phenanthrene, phenylethene, and p-phenylene [1-15]. Although
there exist opulent molecular architectures due to various linkers to
adjoin the porphyrin moieties together, the requirements for ample
electronic interactions between neighboring porphyrin pigments for
efficient excitation energy transfer (EET) and well-defined and rigid
molecular structures to be void of any energy or charge sink should
be considered. In this context, porphyrin arrays where constituent
porphyrins are connected directly without any links can be promis-
ing molecular architectures for the application in molecular photon-
ics and electronics.
