Synthesis and opto-structural characterization of reduced graphene oxide and meso-tetrakis(4-phenylsulfonic-acid) porphyrin composites
| Autor: | Omar Bajjou, Mimouna Baitoul, Mohammed Khenfouch, Malik Maaza, Anass Bakour, Bakang Moses Mothudi, Eric Faulques |
|---|---|
| Přispěvatelé: | University of South Africa (UNISA), Laboratory of Solid State Physics Fes, Maroc, Université Sidi Mohamed Ben Abdellah (USMBA), iThemba LABS, Somerset West, National Research Foundation of South Africa, Institut des Matériaux Jean Rouxel (IMN), Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST), Université de Nantes (UN)-Université de Nantes (UN)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Ecole Polytechnique de l'Université de Nantes (EPUN), Université de Nantes (UN)-Université de Nantes (UN) |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Materials science
Photoluminescence Scanning electron microscope Exciton Oxide 02 engineering and technology 010402 general chemistry Photochemistry 01 natural sciences 7. Clean energy law.invention chemistry.chemical_compound symbols.namesake law Electrical and Electronic Engineering Fourier transform infrared spectroscopy ComputingMilieux_MISCELLANEOUS Graphene 021001 nanoscience & nanotechnology Condensed Matter Physics Porphyrin Atomic and Molecular Physics and Optics 0104 chemical sciences Electronic Optical and Magnetic Materials chemistry symbols [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci] 0210 nano-technology Raman scattering |
| Zdroj: | Journal of Materials Science: Materials in Electronics Journal of Materials Science: Materials in Electronics, Springer Verlag, 2018, 29 (10), pp.8594-8600. ⟨10.1007/s10854-018-8873-y⟩ |
| ISSN: | 0957-4522 1573-482X |
| DOI: | 10.1007/s10854-018-8873-y⟩ |
| Popis: | The present paper aims to study the mixing of reduced graphene oxide (RGO) with meso-tetrakis(4-phenylsulfonic-acid)porphyrin [H4TPPS42−] via a covalent functionalization, through a facile synthesis process. The intermolecular interaction was investigated using scanning electron microscope, Raman scattering, Fourier transform infrared spectroscopy, X-ray diffraction. These techniques demonstrated a structural enhancement of the composite, a better conjugation system and the presence of component interaction at the molecular level. UV–Visible absorption, Steady state photoluminescence (PL) as well as time-resolved PL (TRPL) measurements were carried out to further elucidate the nature of electronic interaction between the components. Steady state PL quenching of the porphyrin is in favor of photoinduced electron and/or energy transfer to the RGO. The TRPL results exhibit a decrease in the exciton mean lifetime compared to that of porphyrin’s confirming the presence of significant interaction between H4TPPS42− and RGO, and corroborating the existence of new interbands leading to slower carrier recombination. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink