In recent years, the revolutionary utilization of plant fibers in polymer laminates significantly influenced environmental effects. Presently, there is progression attention in advancing bio-based materials by acquiring plant fibers from lignocellulosic components for different applications like non-structural, structural laminates, automobile components, ballistics, flooring, household utensils, and aerospace parts. These bio-based, eco-friendly components have been recognized as next-generation contestants for higher-efficacy, sustainable, cheap, environmentally friendly, and lightweight composites. Different kinds of synthetic and natural biopolymers and bio-based nanoparticles have been applied to produce sustainable materials. Bio-based polymer composites manifest unique characteristics of both eco-reinforcement and sustainable resin. This review comprehensively communicates the general characteristics and principles of nanoparticles, polymers, and their respective composites. In addition to the machining characteristics, challenges and future perspectives of the polymer composites have also been reviewed.

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A new coumarin based turn on fluorescent sensor (R1) was reported for the detection of highly hazardous Cd with excellent selectivity and sensitivity without any interference of other metal ions. The single crystal X-ray structure analysis of the sensor showed the actual geometry of the molecule. For the first time, a Cd induced FRET mechanism was observed and explained accordingly. Instant naked eye detection of Cd through a sharp colour change signified the practical applicability of R1. The sensor of high quantum yield was applied in the intracellular detection of poisonous Cd in living HeLa S3 cells.

An organic nonlinear optical centric single crystal, sulphanilic acid monohydrate (SAM) was successfully grown by slow evaporation method. The cell parameters of the grown crystal were assessed by single crystal XRD. The UV absorption edge was found to be 249[Formula: see text]nm providing a wide optical transmittance covering the visible region. The thermal, mechanical and dielectric properties of the grown crystal were examined. Fluorescence emission spectrum was recorded and lifetime was studied. A multiple shot laser technique was adopted to investigate the surface laser damage of the crystal. The third-order nonlinear optical characteristics of the grown crystal, investigated by [Formula: see text]-scan technique attest its suitability in the field of nonlinear optical applications.

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