Greenly synthesized porous carbon nanoparticle (bio‐waste‐based)‐doped nematic liquid crystal composite with optimized electric and electro‐optical properties for devices

Abstract

The present investigation on the impact of porous carbon nanoparticles (PCNPs) on a room temperature nematic liquid crystalline compound (TP‐188‐01) reports extensive electro‐optical analysis of composite followed by dielectric and luminescence study as well. The pure nematic compound has been doped with 0.1%, 0.25%, and 0.5% of PCNPs (spherical), which have been synthesized by green synthesis technique without use of any activating agents. Low‐frequency dielectric analysis (50 Hz to 1 kHz) has been done to confirm ion generation with increase in PCNS concentration. The dielectric data also indicate preferential orientation of molecules from homogeneous to homeotropic alignment, which can be used in performance optimization of electro‐optical devices. The analysis of dielectric data also illustrates the application of PCNS‐doped systems in circuits operating at high voltages. Diffusion coefficient, mobility, and DC conductivity have been further examined to support the above observations. A significant decrease (of about 47%) in the response time of porous carbon nanoparticle liquid crystal (NP‐LC) composites has also been observed. The photoluminescence spectrum of NP‐LC composites as a function of carbon nanosphere (CNS) concentration has shown Quenching (following the Stern–Volmer quenching mechanism) in the luminescence intensity with increasing CNS concentration. The highly improved response time and quenching in the luminescence intensity further make the PCNS‐doped LC composites as ideal materials to be used in devices, encouraging LC‐aided green nanotechnology.

Phytosynthesis of Silver Nanoparticles Using Oscimum sanctum Leaf Extract and Studies on Its Antidiabetic, Antioxidant, and Antibacterial Properties

“…To overcome these limitations and difficulties, nano delivery systems have shown great potential, including their stability and improved bioavailability through oral delivery. , The size, distribution, morphology, and shape of NPs all contribute to their distinctive features. They are affordable, environmentally safe, and simple to scale up for large-scale synthesis to produce NPs from plant leaves’ and flowers’ extracts without using harmful chemicals and extreme pressure, temperature, or energy. , The vast surface area and active sites on NPs enable them to adsorb plant bioactive compounds on their surfaces. In addition, biosynthesized silver NPs (Ag NPs) have outstanding uses in several industries, including in drug delivery, genetic manipulation, solar energy storage, optical receptors, and as catalysts in chemical processes .…”

“…They are affordable, environmentally safe, and simple to scale up for large-scale synthesis to produce NPs from plant leaves' and flowers' extracts without using harmful chemicals and extreme pressure, temperature, or energy. 17,18 The vast surface area and active sites on NPs enable them to adsorb plant bioactive compounds on their surfaces. In addition, biosynthesized silver NPs (Ag NPs) have outstanding uses in several industries, including in drug delivery, genetic manipulation, solar energy storage, optical receptors, and as catalysts in chemical processes.…”