One pot solvothermal synthesis of ZnPc nanotube and its composite with RGO: A high performance ORR catalyst in alkaline medium

Graphene oxide nanohybrids for electron transfer-mediated antimicrobial activity

“…59 Furthermore, aer the deposition of the GO layer on the ZnPc(B) molecules, the Q-band of the ZnPc moiety showed a slight red-shi from 697 nm to 700 nm in the spectrum of the ZnPc(B)-GO hybrid, suggesting that the deposition of the GO akes onto the ZnPc(B) molecules leads to a strong p-p interaction between the ZnPc(B) and the GO. 37,[59][60][61] This strong p-p interaction might have led to the transition of free electrons from the GO sheets to the phthalocyanine group of ZnPc(B), whereas the Q-band of the ZnPc(A) moiety in the spectrum of the ZnPc(A)-GO hybrid remains unaltered. [59][60][61]…”

“…37,[59][60][61] This strong p-p interaction might have led to the transition of free electrons from the GO sheets to the phthalocyanine group of ZnPc(B), whereas the Q-band of the ZnPc(A) moiety in the spectrum of the ZnPc(A)-GO hybrid remains unaltered. [59][60][61]…”

“…2(B), display a characteristic D-band at $1347 cm À1 and a G-band at $1593 cm À1 , which correspond to the GO nanosheets along with the characteristic peaks of the ZnPc molecules. 61,62 The G-band shi in the ZnPc(A/B)-GO nanocomposites could be assigned to the extended delocalization of p electrons owing to p-p interaction between the ZnPc and the GO. 61,62 The Raman plots of the ZnPc(A/B)-GO nanocomposites were further deconvoluted and re-plotted to gain a better understanding of the interaction between the ZnPc and GO entities.…”

“…In the case of the ZnPc(B)-GO composite, the observed shi in the G-band towards lower wavelength could be attributed to the strain in the molecular orientation of GO, resulting in p electron delocalization owing to the resulting p-p interaction between the ZnPc and GO molecules. 61,62 The I D /I G ratios for the GO akes and the ZnPc(A)-GO and ZnPc(B)-GO thin lms were calculated to be 0.91, 1.1 and 0.828, respectively. 59 The lower I D /I G ratio for ZnPc(B)-GO hybrid suggests that the ZnPc(B) molecules interact more efficiently with the GO akes as compared to the ZnPc(A) counterparts.…”

“…59 The lower I D /I G ratio for ZnPc(B)-GO hybrid suggests that the ZnPc(B) molecules interact more efficiently with the GO akes as compared to the ZnPc(A) counterparts. 61,62 The diminished D peak of GO in the ZnPc(B)-GO composite further conrmed the decrement in defect states in GO akes leading to an extensive interaction between them.…”