Combined experimental and TDDFT computational studies of the optical and electrical characteristic of luminol films-doped TiO2 with 9.027% power conversion efficiency

Journal of Materials Science: Materials in Electronics - In this study, the spectrophotometric analysis was applied to check the optical properties of undoped [LO]TF and doped Luminol films with...     

Synthesis,structural and optical characterizations of ZrO2-bromothymol blue nanocomposite thin-film [ZrO2+BTB]C and its application: experimental and TDD-DFT computations

Journal of Materials Science: Materials in Electronics - A [ZrO2+BTB]C nanocomposite was synthesized and prepared as a thin film using the sol–gel spin coating...     

High-performance one and two-dimensional doped polypyrrole nanostructure for polymer solar cells applications

Journal of Materials Science: Materials in Electronics - Hydrochloric acid-doped polypyrrole one and two dimensions have been produced in the existence of methyl orange dye (MO) and sodium dodecyl...     

Eco-friendly method to synthesize and characterize 2D nanostructured (1,2-bis(diphenyl-phosphino)ethyl) tungsten tetracarbonyl methyl red/copper oxide di-layer thin films

Three-layer thicknesses (\({T}_{1 }= 50\), \({T}_{2 }= 75\) and \({T}_{3 }= 100\) nm) of 1,2-bis(diphenylphosphino)ethyl tungsten tetracarbonyl methyl red (DPE-W-MR) were deposited onto the CuO thin film (50 nm) to produce DPE-W-MR/CuO di-layer thin films by sol–gel spin-coating technique. The composition and the chemical structure of the as-prepared thin films were characterized using various techniques including elemental analysis, Fourier transform infrared spectroscopy, \(^{1}\hbox {H}\)-NMR and X-ray diffraction (XRD). Scanning electron microscopy was used to investigate the size and shape of the CuO nanoparticles and the fabricated thin films. The films are crystalline as evidenced by the XRD pattern and DPE-W-MR has an orthorhombic crystal system. The crystallite size was calculated from an analysis of the line broadening features using the Scherrer formula; the average crystallite sizes of DPE-W-MR/CuO di-layer thin films are 52.92, 56.24 and 72.26 nm for \({T}_{1}\), \({T}_{2}\) and \({T}_{3}\), respectively. Thermogravimetric analysis and the thermal curve of DPE-W-MR complex were studied. Optical properties of DPE-W-MR/CuO di-layer thin films are discussed. The optical band gap energies of DPE-W-MR di-layer thin films/CuO decreased (2.25, 2.1 and 1.88 eV) as the film thickness increased (from \({T}_{1}\) to \({T}_{3})\). Based on the optical results and the quantum confinement effects, the DPE-W-MR/CuO di-layer thin films may be candidates as semiconductor materials for optoelectronic devices.     

Attachment of Chlamydia psittaci to formaldehyde-fixed and unfixed L cells

The attachment of Chlamydia psittaci, strain 6BC, to formaldehyde-fixed and unfixed L cells was studied. Cations were found to be required for attachment to both fixed and unfixed cells. The requirement for cations was largely eliminated when the net negative surface charge on fixed cells was reduced. A high concentration of sodium chloride (0.5 M) prevented binding and removed chlamydiae which were attached to fixed and unfixed cells, whereas non-ionic detergents had no effect on attachment of C. psittaci to fixed cells. The effect of various modifications of C. psittaci and L cell surfaces on attachment was also determined. Of the treatments tested, only trypsinization and periodate oxidation of L cells and acetic anhydride, heat and periodate treatments of C. psittaci reduced binding. Various lectins and high concentrations of neutral sugars had no effect on attachment, whereas, amino sugars and several organic amines inhibited attachment. These results suggest that the initial phase of attachment requires electrostatic interactions between host and parasite surfaces, and that amino and carbohydrate groups on the surface of C. psittaci and glycoproteins on the surface of L cells may be directly or indirectly required for attachment.