Add time:08/18/2019         Source:sciencedirect.com

p-Toluidine (cas 106-49-0) was used as a precursor to synthesize new organic compound [(E)-4-methyl-N1-((E)-4-methyl-6-(p-tolylimino) cyclohex-3-en-1-ylidene)-N2-(p-tolyl) benzene-1,2-diamine] (MBD) by oxidative reaction via potassium dichromate as oxidizing agent at room temperature. Spin coater was used to fabricate nano-size crystalline thin film of the MBD with thickness 73 nm. The characterizations of the MBD powder and thin film have been described by various techniques including Fourier Transform Infrared (FT-IR), Mass Spectra, X-ray Diffraction (XRD), Scanning Electron Microscope (SEM), UV–Visible measurements and Atomic Force Microscope (AFM). The results revealed that the MBD as an organic material is semi-crystalline containing benzenoid (Ben N Ben) and quinonoid (Quin = N = Quin) structures. Various optical constants such as refractive index (n), and the absorption index, (k) of the MBD thin film were determined. The effect of temperature on the electrical resistivity of MBD film was studied by a Keithley 6517B electrometer. The energy band gap value of the MBD thin film was found to be 2.24 eV. Thus, MBD is located in the semiconductor materials range. In addition, structural and optical mechanisms of MBD nanostructured thin film were investigated. The obtained results illustrate the possibility of controlling the organic semiconductor MBD thin film for the optoelectronic applications.

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