Current Applied Physics, Vol.20, No.6, 777-781, 2020
Bulk electrolysis of Zn-phthalocyanine unveils self assembled nanospheres via anion binding
Stimuli responsive p-conjugated macrocyclic systems has shown significant attention in organic electronics, however, amongst them, porphyrins and phthalocyanines unveiled remarkable growth towards materials and biological applications. Herein, we report bulk electrolysis of Zn-phthalocyanine system (ZnPc-OMe) under potential difference of 1.5 V in chloroform results anion binding mechanism directs the formation of self-assembled nanospheres by diffusion controlled approach. Electrochemical and UV-Vis absorption studies of ZnPcOMe suggest that anion (Cl-) binding ability towards `Zn` whilst applied potential leads to the formation of H+[(Cl)ZnPc-OMe]- promote the enhanced current and charge generation. Microscopic analysis revealed that ZnPc-OMe and H+[(Cl)ZnPc-OMe]- exhibit the nanosheets and spheres with an average diameter of 0.5-1 mu m and 300-500 nm, respectively. Powder X-ray diffraction analysis and raman spectra revealed the changes in crystalline phase transitions via ion-dipole and p-p stacking interactions. Thus, these unique features are atypical for phthalocyanine derivative hitherto unknown.