State of the art in gold nanoparticle synthesis

There is great need for stand-alone luminescence-based chemosensors that exemplify selectivity, sensitivity, and applicability and that overcome the challenges that arise from complex, real-world media. Discussed herein are recent developments toward these goals in the field of supramolecular luminescent chemosensors, including macrocycles, polymers, and nanomaterials. Specific focus is placed on the development of new macrocycle hosts since 2010, coupled with considerations of the underlying principles of supramolecular chemistry as well as analytes of interest and common luminophores. State-of-the-art developments in the fields of polymer and nanomaterial sensors are also examined, and some remaining unsolved challenges in the area of chemosensors are discussed.

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Supramolecular Luminescent Sensors

A critical review on the treatment of dye-containing wastewater: Ecotoxicological and health concerns of textile dyes and possible remediation approaches for environmental safety

The high versatility of poly(vinylpyrrolidone) (PVP) can be explained by its diverse properties including its solubility in water and in a broad range of liquid media, high chemical and thermal resistance, and unique wetting, binding, and film-forming properties. Thanks to biocompatibility, absence of toxicity and high capacity to form interpolymer complexes, PVP is widely used for designing materials for different applications, such as biomaterials for medical and nonmedical uses. This review summarizes a vast diversity of applicative examples showing the tremendous opportunities for future research and developments of PVP based biomaterials.

Poly(vinylpyrrolidone) – A Versatile Polymer for Biomedical and Beyond Medical Applications

Antifouling membrane surface construction: Chemistry plays a critical role

Gamma radiation induced synthesis of gold nanoparticles in aqueous polyvinyl pyrrolidone solution and its application for hydrogen peroxide estimation

The quantitative determination of trace levels of uric acid has potential applications in the medical field. In this work, a simple colorimetric estimation of uric acid based on localized surface plasmon resonance (LSPR) band of polyvinyl pyrrolidone-capped-silver nanoparticles (PVP-Ag-NPs) is described. PVP-Ag-NPs were synthesized via gamma radiolytic route, thereby, avoiding the use of any external chemical reducing agent. These nanoparticles were characterized using UV–visible spectrophotometry, transmission electron microscopy (TEM), atomic force microscopy (AFM) and particle size analyzer (PSA). The silver nanoparticles prepared by this method were found to be of spherical shape with diameters 5.1 ± 1.6 nm. Radiation synthesized silver nanoparticles were then used as LSPR-based optical chemical sensors for detection and estimation of uric acid concentrations in human serum and bovine serum samples. The effect of PVP molecular weight on the uric acid detection efficiency of the system was also studied. It was observed that low molecular weight PVP (40 kD) gave better results as biosensor for uric acid estimation.

Nilanjal Misra

Papers

Gamma radiation induced synthesis of gold nanoparticles in aqueous polyvinyl pyrrolidone solution and its application for hydrogen peroxide estimation

Localized surface plasmon resonance-optical sensors based on radiolytically synthesized silver nanoparticles for estimation of uric acid

Cellulose based cationic adsorbent fabricated via radiation grafting process for treatment of dyes waste water.

Laccase immobilization on radiation synthesized epoxy functionalized polyethersulfone beads and their application for degradation of acid dye

Radiation grafted cellulose fabric as reusable anionic adsorbent: A novel strategy for potential large-scale dye wastewater remediation.