Synthesis, physicochemical and optical properties of bis-thiosemicarbazone functionalized graphene oxide
| Autor: | Cláudia T. Arranja, Abilio J.F.N. Sobral, José A. Paixão, Santosh Kumar, Mohmmad Younus Wani, Ricardo A. E. Castro |
|---|---|
| Jazyk: | portugalština |
| Rok vydání: | 2018 |
| Předmět: |
Photoluminescence
Scanning electron microscope Chemistry Graphene Analytical chemistry 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Atomic and Molecular Physics and Optics 0104 chemical sciences Analytical Chemistry law.invention symbols.namesake Differential scanning calorimetry law Microscopy symbols Fourier transform infrared spectroscopy 0210 nano-technology Spectroscopy Raman spectroscopy Instrumentation |
| Zdroj: | CIÊNCIAVITAE Repositório Científico de Acesso Aberto de Portugal Repositório Científico de Acesso Aberto de Portugal (RCAAP) instacron:RCAAP |
| Popis: | Fluorescent materials are important for low-cost opto-electronic and biomedical sensor devices. In this study we present the synthesis and characterization of graphene modified with bis-thiosemicarbazone (BTS). This new material was characterized using Fourier transform infrared spectroscopy (FT-IR), Ultraviolet-visible (UV-Vis) and Raman spectroscopy techniques. Further evaluation by X-ray diffraction (XRD), thermo-gravimetric analysis (TGA), differential scanning calorimetry (DSC), scanning electron microscopy (SEM) and atomic-force microscopy (AFM) allowed us to fully characterize the morphology of the fabricated material. The average height of the BTSGO sheet is around 10nm. Optical properties of BTSGO evaluated by photoluminescence (PL) spectroscopy showed red shift at different excitation wavelength compared to graphene oxide or bisthiosemicarbazide alone. These results strongly suggest that BTSGO material could find potential applications in graphene based optoelectronic devices. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|