The synthesis and characterization of novel metal-free and metallophthalocyanines bearing eight 16-membered macrocycles

Structures and spectroscopic properties of nonperipherally and peripherally substituted metal-free phthalocyanines: A substitution effect study based on density functional theory calculations

“…The calculated electronic absorption spectra of 6 can also find analogs in the recorded electronic absorption spectra of the symmetrically tetrasubstituted metal-free phthalocyanine with four 14-membered dioxadithia macrocycles, each of which is attached to a 15-membered crown ether, at 708 and 641 and 292 nm [55]. The calculated electronic absorption bands at 321, 362, 402, 471, 638, and 644 nm in the electronic absorption spectrum of 8 are similar to the observed bands at 296, 326, 368, 449, 656, and 707 nm for the metal-free phthalocyanine containing four 27-membered diazaheptathia macrocyclic moieties on the peripheral positions [56], respectively, and can also correspond with the absorption bands of the metal-free phthalocyanine containing four 18-membered tetrathiadiaza macrocycles moieties on the peripheral positions [57] and the metal-free phthalocyanine bearing eight 16-membered tetrathiamonoaza macrocycles in the peripheral positions [58].…”

Effect of Cobalt Phthalocyanine on Synthesis and Physicochemical Properties of Polyaniline

“…Like most phthalocyanines, CoPc has two absorption bands at 300 and 680 nm . HOMO‐LUMO transitions (π‐π *) result in maximum in the visible region whereas in the UV region it is due to transitions between LUMO lower π‐levels …”

Photophysical and photochemical parameters of octakis (benzylthio) phthalocyaninato zinc, aluminium and tin: Red shift index concept in solvent effect on the ground state absorption of zinc phthalocyanine derivatives

“…In one of their reports, (OBTMgPcs) was shown as a complex resource that can be tuned optically when induced by Pd 2+ -BINAP complex at the liquid-liquid interface. Despite interesting findings by Kenta Adachi et al and other literature work on thioether MPcs in the last decade [19][20][21][22], to our knowledge, little is known about the solvent parameters that affect their ground state absorption, photophysics and photochemistry.…”