PH and concentration effect on the optical absorption properties of porphyrin nanorods functionalized graphene oxide
Bajjou O. (1)*, MONGWAKETS N. (2), KHENFOUCH M. (3), BAÏTOUL M. (1), Mothudi B. (4), Dhlamini M. (4), LEKALA M. (4), MAAZA M. (3)
(1) University Sidi Mohamed Ben Abdellah, Faculty of Sciences Dhar el Mahraz - Fez - Morocco, (2) iThemba LABS-National Research Foundation of South Africa, Old Faure Road, POBox 722, Somerset West - Western Cape Province - SouthAfrica, (3) UNISA Africa Chair in Nanosciences-Nanotechnology, College of Science, Engineering and technology Sc - Johannesburg - SouthAfrica, (4) UNISA Africa Chair in Nanosciences-Nanotechnology, College of Graduate Studies, University of South - Pretoria - SouthAfrica
Graphene oxide (FGO) decorated with nanostructured porphyrin (PN) was synthesized and the interfacial interaction between these two components were investigated by using Scanning electron microscopy (SEM), Transmission electron microscopy (TEM), Raman scattering, Fourier transform infrared (FT-IR), X-ray, and Uv-visible. SEM and TEM showed good dispersion of GO and PN. FT- IR and Raman results revealed a π-π intermolecular interaction confirming the energy/charge transfer. Moreover, X-ray diffraction study confirmed the intercalation of PN in GO and their disaggregation. The Uv-visible results showed an important interaction between GO and porphyrin nanorods under pH values and different concentrations resulting an effect on the optical absorption of GO-PN. The findings presented here are important to achieve the functionalization of graphene oxide with PN for various optoelectronic applications