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A very interesting challenge concerns the elaboration of nanowires from organic polymers with the aim to design novel nanoelectronic devices. The new VK-Stilbene copolymer based on organic nanowires was developed and characterized in this context. The VK-Stilbene nanowires were made with a template method by filling nanopores of AOO membranes. The prepared nanowires wereinvestigated by morphological spectroscopy and micro-Raman Rinshaw analysis. The modifications of photoemissive properties from microscopy film to nanowires were described by steady-state optical techniques combinedwith time-resolved photoluminescence spectroscopy. A blue shift of the luminescence are observed in the case of nanowires proceed from structural order and shortening of effective conjugation lengths. Therefore, VK-Stilbene nanowires exhibit a remarkably quasi-exponential long-lived and blue-shifted ascribed to a confinement-effect of intra-chain singlet excitons. Additionally, these nano-objects show an increase in the quantum yield with respect to bulk samples. The acquired optical data confirm that VK-Stilbene nanomaterials may be suitable for nanotechnologies.

A series of six tungsten-based bismuth borate glasses with a xWO3- 20 Bi2O3- 20 Na2O2- (60-x) B2O3), 0≤ x ≤ 5 wt% chemical composition were synthesized by using the solid-state conventional method. The structures of the fabricated samples were studied with X-ray diffraction analysis. Optical features such as the energy gap (Eg), Urbach energy (Eu), steepness parameter (S), refractive index (n) and Fermi level energy (EF) were measured for the fabricated glasses with a UV–Vis–NIR spectrophotometer. Furthermore, a Monte Carlo simulation code (MCNP-5) was applied to estimate the gamma ray mass attenuation coefficient (MAC) for the fabricated glasses. The simulated data showed that the insertion of WO3 increases the MACs of the fabricated samples: the highest and lowest MACs were obtained for the W6 and W1 glasses, respectively. Then, the simulated MAC was used to calculate the mean free path (MFP) for all the fabricated glasses. The thinnest MFP was achieved by W6 (increasing from 0.007 to 70,560 between 0.015 and 15 MeV, respectively), while the thickest MFP was achieved by W1 (increasing from 0.0100 to 8.975 between 0.015 and 15 MeV, respectively). Moreover, new Phy-x/PD software was used to calculate MAC, MFP, equivalent atomic number (Zeq) and the exposure and energy absorption buildup factors (EBF and EABF). The simulated and calculated results showed that adding WO3 enhances the shielding properties of the synthesized glass.