Original scientific paper
Photoluminescence Quenching and Structure of Nanocomposite Based on Graphene Oxide Layers Decorated with Nanostructured Porphyrin
Omar Bajjou
; Laboratory of Solid-state Physics, Faculty of Sciences Dhar el Mahraz, University Sidi Mohamed Ben Abdellah, Fez, Morocco
Precious Nametso Mongwaketsi
; UNISA Africa Chair in Nanoscience and Nanotechnology, University of South Africa, Pretoria, South Africa; iThemba LABS-National Research Foundation of South Africa, Faure, South Africa
Mohammed Khenfouch
; Laboratory of Solid-state Physics, Faculty of Sciences Dhar el Mahraz, University Sidi Mohamed Ben Abdellah, Fez, Morocco; UNISA Africa Chair in Nanoscience and Nanotechnology, University of South Africa, Pretoria, South Africa; iThemba LABS-National Rese
Anass Bakour
; Laboratory of Solid-state Physics, Faculty of Sciences Dhar el Mahraz, University Sidi Mohamed Ben Abdellah, Fez, Morocco; Institute of Materials Jean Rouxel, Nantes, France
Mimouna Baïtoul
; Laboratory of Solid-state Physics, Faculty of Sciences Dhar el Mahraz, University Sidi Mohamed Ben Abdellah, Fez, Morocco
Malik Maaza
; UNISA Africa Chair in Nanoscience and Nanotechnology, University of South Africa, Pretoria, South Africa; iThemba LABS-National Research Foundation of South Africa, Faure, South Africa
Jany Wery Venturini
; Institute of Materials Jean Rouxel, Nantes, France
Abstract
Nanocomposites based on few-layers graphene oxide (FGO) decorated with porphyrin nanorods (PN) were synthesized and the interfacial interaction between these two components was investigated by using scanning electron microscopy (SEM), photoluminescence spectroscopy, resonant Raman scattering and Fourier transform infrared (FT-IR) techniques. SEM showed good exfoliation of FGO and its successful interaction with the PN. The photoluminescence results showed an important interaction between FGO and PN resulting in a quenching of the photoluminescence of the PN-FGO composite. Resonant Raman with PN aggregates and FT-IR results revealed a π- π intermolecular interaction confirming the energy/charge transfer. Moreover, the investigation of X-ray diffraction confirmed the intercalation of PN in FGO and their disaggregation. The findings presented here are an important contribution to achieving the functionalization of
graphene derivative surfaces with PN for various optoelectronic applications and particularly photovoltaic cells.
Keywords
graphene oxide; self-assembled porphyrin; photoluminescence; resonant Raman scattering; Fourier transform infrared (FT-IR); X-ray diffraction
Hrčak ID:
142428
URI
Publication date:
1.1.2015.
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