The synthesis and electrochemical properties of a new tetra-(crown-ether-thiafulvalene)-annulated phthalocyanine derivative

The synthesis and electrochemical study of novel phthalocyanines substituted with a crown ether and alkyl chains

“…It has been reported that different alkali metal ions can form intermolecular sandwich complexes with MPc having crown ether units; the highest affinity for potassium ion was observed in the case of the MPc derivative having 5-crown ethereal units in solvent extraction experiments [53,54]. Dimerization of the Pc units in the presence of alkali metal ions, especially with those which have a tendency to form sandwich type complexes (Scheme 2), affects the electron withdrawing ability of the complexes, thus changes the potentials of the redox processes [32,35,49,54].…”

Synthesis and electron donating property of novel porphyrazines containing tetrathiacrown ether-linked tetrathiafulvalene moieties

“…Very recently, Nolte and co-workers [25] and Liu and coworkers [26] independently reported the preparation of novel tetra(TTF-crown-ether) Pcs and tetra (dithiacrown ether-TTF) Pcs, respectively. It is noteworthy that a tetra (TTF-dithiacrown ether) Pc was found to self-assemble into helical tapes (nanometers in width and micrometers in length) and showed potentially novel electronic and structural properties.…”

“…In contrast to the crowned Pcs systems, dithiacrowned Pz offers an advantage over its Pc counterparts in that two donor atoms in each crown are in direct conjugation with the 18 p-electron core of the macrocycle. Indeed, these crowned Pzs showed a profound effect on the optical properties of the Pz core, and the sulfur atoms in the crown ether rings give the opportunity to bind soft transition-metal ions [20][21][22][23][24].Very recently, Nolte and co-workers [25] and Liu and coworkers [26] independently reported the preparation of novel tetra(TTF-crown-ether) Pcs and tetra (dithiacrown ether-TTF) Pcs, respectively. It is noteworthy that a tetra (TTF-dithiacrown ether) Pc was found to self-assemble into helical tapes (nanometers in width and micrometers in length) and showed potentially novel electronic and structural properties.…”

New Synthesis of 3,6‐Dibromophthalonitrile and Phthalocyanine Having Eight Thienyl Substituents at Peripheral α‐Positions

“…Being used as dyes and pigments initially, now phthalocyanines have demonstrated their special properties in many other aspects. They exhibit applications in electrochemical sensors , organic electronics , nonlinear optics , and photodynamic therapy . Undoubtedly, the π‐conjugation system of the phthalocyanine macrocycle plays a key role in many of their modern applications.…”