This study focused on the synthesis of plant-mediated copper-oxide nanoparticles (OsCuONPs) via the sol–gel technique and the fabrication of OsCuONP-infused PVA composite films (POsCuONPs) utilizing the solvent casting method for wound-healing applications. The prepared OsCuONPs and nanocomposite films were characterized using UV–visible spectra, FTIR, SEM, XRD, TGA, water contact-angle (WCA) measurements, and a Universal testing machine (UTM) for mechanical property measurements. The UV and FTIR tests showed that OsCuONPs were formed and were present in the PVA composite film. Moreover, the mechanical study confirmed that there is an increase in the tensile strength (T_S) and Young’s modulus (Y_m) with 21.75 MPa to 32.50 MPa for T_S and 24.80 MPa to 1128.36 MPa for Y_m, and a decrease in the % elongation at break (E_b) (394.32 to 75.6). The TGA and WCA study results demonstrated that PVA films containing OsCuONPs are more stable when subjected to high temperatures and demonstrate a decreased hydrophilicity (60.89° to 89.62°). The cytotoxicity and hemolysis tests showed that the CuONPs-3 containing composite films (PVA/OsCuONPs with a wt. ratio of 1.94/0.06) are safe to use, have a good level of cell viability, and do not break down blood. This is true even at high concentrations. The study also discovered that cells moved considerably in 12 and 24 h (13.12 to 19.26 for OsCuONPs and 312.53 to 20.60 for POsCuONPs), suggesting that 60% of the gaps were filled. Therefore, the fabricated POsCuONP nanocomposites may serve as a promising option for applications in wound healing.

Aircraft icing is the formation and accumulation of ice on an aircraft’s windward surface. The impingement of super-cooled water droplets floating in clouds against a solid surface is the primary cause. Because it affects the aerodynamic form and poses a rising hazard to flight safety. This research gives a technique to overcome the ice accretion problemby preparation of Superhydrophobic coatings that can be utilized in aircraft. To create superhydrophobic surfaces, scientists have used many surface-modified functional coating methods based on perfluorinated polymer mixed with biomaterials. Herein, a plant leaf extract (Senna auriculata (Avaram in Tamil) which possesses good self-cleaning properties and better water-repellant properties like a lotus leaf, and exhibits several industrial applications such as anti-corrosive, anti-fogging, and anti-icing. The dried leaf extract is blend with Nafion polymer in ethanol and the as-prepared mixture coated on the polished surface of the aluminum alloy plate by using spray coating technique. The modified aluminum alloy (AA6061) plate surface was characterized with the help of a metallurgical microscope in different magnifications, scanning electron microscope and the measured contact angle (θ → 153°) is in good agreement with the superhydrophobicity requirements. High-speed optical microscopy helped to identify steady coalescence-induced droplet jumping during atmospheric water vapor condensation. This experimental result provides a new avenue for the environmentally benign fabrication of superhydrophobic metal-modified surfaces for various automotive applications.

Alzheimer’s disease (AD) remains a major neurodegenerative disorder with limited therapeutic options. Liposomal drug delivery has emerged as a promising strategy to enhance drug bioavailability and targeted delivery across the blood–brain barrier. This review explores the role of liposomes and nanomaterials in AD therapy, focusing on their versatility for drug delivery, including intranasal formulations, gene therapy, and reactive oxygen species (ROS)-responsive systems. Various liposomal formulations, such as mannose-modified, antibody-targeted, exosome-like, and biomaterial-based carriers, have shown significant potential in improving therapeutic efficacy. Natural compound-loaded liposomes, including polyphenols, tannic acid, and plant extracts, offer neuroprotective benefits. Furthermore, the inhibition of amyloid-β (Aβ) aggregation, a key pathological feature of AD, is addressed through innovative liposomal approaches, including peptide-conjugated, chiral-modified, and transferrin-targeted liposomes. This review highlights the synergistic role of glymphatic clearance and microglial phagocytosis in reducing the amyloid burden. Liposomal-based strategies are promising for advancing AD treatment by improving drug stability, specificity, and brain-targeting efficiency.

Numerous light emitting polymers and copolymers with excellent luminescence characteristics and thermal stability are being synthesized and extensively investigated for applications as emissive layers in polymer light emitting diodes. In the present study, three novel, thermally stable, segmented block copolymers (SBC) and two hybrid polymers with excellent photoluminescence (PL) and electroluminescence emission (EL) characteristics were subjected to spectroscopic investigations to explore the effect of various aromatic and non-aromatic solvents on the photoluminescence emission characteristics. Dilute solutions of the SBCs and the hybrid polymers were made from various solvents like dichloromethane, chlorobenzene, tetrahydrofuran, xylene, chloroform, etc. UV-Vis absorption and PL emission spectra of these polymer solutions were recorded simultaneously. No significant changes in the PL emission peaks were observed, depending on the nature of solvents. The effect of solvents in terms of aggregation effects in these polymers was studied. The low aggregation effects and solvent independent nature of the polymers offer very high prospects in various optoelectronic device applications. The present study can be of great use in designing efficient polymer LEDs based on these SBCs and hybrid polymers as emissive layers. The efficiency and stability of the polymer LEDs can be considerably improved by suitably choosing the solvent for the emissive polymers.