Size dependent nonlinear optical properties of spin coated zinc oxide-polystyrene nanocomposite films

Structure and Physical Properties of Al2O3 Nanofillers Embedded in Poly(Vinyl Alcohol)

“…For example, incorporation of inorganic nanofiller into the polymeric membranes has been considered as a way to make polymeric membranes commercially more attractive [1][2][3]. The combination of inorganic and organic components provides a simple route to synthesis stable and processable composite materials, hence integrating the promising properties of both components [4,5]. Poly(vinyl alcohol) PVA has been widely studied due to its good film forming ability, high hydrophilicity, good chemical resistance, good flexibility, dielectric properties, ductility, processability and other interesting mechanical properties [6][7][8].…”

“…On the other hand, the pure-organic compounds commonly act as cross-linkers in PVA chains. These include (1) hexamethylene diisocyanate; the crosslinking ranged from 1.7 up to 74 mol% of reacted OH groups [23]; (2) The maleic acid addition causes an increase of the T g (i.e., for the pure PVA and the maleic acid treated PVA was 90 and 1208C, respectively), indicates the presence of flexible interlinks between two PVA chains [24]; (3) The BHES (bis b-hydroxyethyl sulfone), when the BHES concentration increases, the T m of the heat-treated films shifted to the lower temperature, in addition to existence of the crystalline phase for PVA with high water resistance [25]; (4) The glutaraldehyde, where the cross-link density increase up to 34%, corresponding to reduction of free volume in polymer backbone, yielded reduction in PVA properties (e.g., swelling, water uptake, and conductivity) with lower oxygen diffusivity across films [26]. Finally the chemical linking adverse effects can be avoided by using the physical cross linking process such electron beam or radiation techniques [27].…”

Nanostructured ZnO Materials: Synthesis, Properties and Applications

“…Wong et al [201] reported a method for tuning the refractive index of hybrid materials by different functionalization of ZnO nanoparticles. Moreover, PS-ZnO layers were used as scattering layers for improving the efficiency of OLED [202] and for obtaining structures with nonlinear optical properties [203,204].…”

Temperature-Dependent Excitonic Photoluminescence and Nonlinear Absorption of CdTe Nanocrystal/Polyvinyl Alcohol Films

“…The introduction of inorganic NCs in organic polymer matrices has attracted considerable attention because the combined advantages of inorganic NCs and organic polymers provides a simple channel to synthesize the processable and stable compound functional materials [ 15 ]. Investigations into the optical characteristics of the compound films containing II–VI group NCs have attracted considerable interest due to the potential applications to photoelectric devices [ 16 ], but it is rarely reported for the luminescent and nonlinear absorption of CdTe NC/PVA films.…”