α-Aryl/alkoxy-substituted phthalocyanines (Pcs) were synthesized and the formation of J- type self-aggregation for zinc phthalocyanines has been observed in organic non- coordinating solvents. The mechanism of the formation of this self-assembly was studied by UV–vis spectroscopy, fluorescence spectroscopy and MALDI-TOF MS, which revealed that it was stabilized by Zn–O self-coordination.
