Novel azobenzene-phthalocyanine dyads――design of photo-modulated J-aggregation

Photophysical, photochemical and aggregation behavior of novel peripherally tetra-substituted phthalocyanine derivatives

“…6). Thus, the addition of a coordinating solvent breaks J-aggregation completely as a result of the competitive coordination of MeOH molecules to central Zn atoms [10,15,49]. The formation of J-aggregation among the zinc (II) phthalocyanine molecules instead of protonation was also confirmed by the appearance of peaks in its MALDI-TOF mass spectrum (Fig.…”

A highly stable double-coordinated 2-hydroxy-tri(tert-butyl)-substituted zinc phthalocyanine dimer: synthesis, spectral study, thermal stability and electrochemical properties

“…Based on a number of studies, 3,8,13 we suggested a supramolecular structure of the dimeric complex in which the macrocycles are bonded by coordinating interactions between the zinc ion of the first phthalocyanine macrocycle and the oxygen atom of the OH-group of the second one. The estimated structure of this compound should provide high stability and reveal new properties.…”

“…They can be formed exceptionally in non-polar solvents [7][8][9] as well as in the presence of heavy metal ions [10][11][12] or upon irradiation. 13 In this connection, the few published works have mainly focused on studying the dimer-monomer equilibrium by UV-Vis and fluorescence spectroscopy during dissociation of the dimers upon addition of coordinating solvents or reagents. 3,8,10,14 Recently, we reported on the first synthesis of a highly stable J-type dimer based on 2-hydroxytri(tert-butyl)-substituted zinc phthalocyanine.…”

Synthesis, characterization and comparative studies on the photophysical and photochemical properties of peripherally and non-peripherally tetra-substituted zinc(II) phthalocyanines

“…4 as an example for complex 10). Thus, the addition of a coordinating solvent breaks J-aggregation completely as a result of the competitive coordination of MeOH molecules to central Zn atoms [35,40,66]. Aggregation behavior of the studied zinc (II) phthalocyanine complexes (4,5,9 and 10) were also investigated in DMSO at different concentration.…”