1,721,034 research outputs found
Water-compatible molecularly imprinted polymer for solid phase extraction of 1-methyladenosine as biochemical marker
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Palladium-catalysed cyclocarbonylation reactions in dimethyl carbonate, an eco-friendly solvent and ring-opening reagent.
No full textDi-Me carbonate (DMC) is used as an alternative and eco-friendly solvent for selective cyclocarbonylation reactions of allyl phenol derivs. for the synthesis of lactones. In some cases, depending on the reaction condition, DMC behaves as a ring-opening reagent producing methoxycarbonyl compds., such as 2-OHC6H4(CH2)3CO2Me
Green Aspects in Molecularly Imprinted Polymers by Biomass Waste Utilization
Full text linkMolecular Imprinting Polymer (MIP) technology is a technique to design artificial receptors with a predetermined selectivity and specificity for a given analyte, which can be used as ideal materials in various application fields. In the last decades, MIP technology has gained much attention from the scientific world as summarized in several reviews with this topic. Furthermore, green synthesis in chemistry is nowadays one of the essential aspects to be taken into consideration in the development of novel products. In accordance with this feature, the MIP community more recently devoted considerable research and development efforts on eco-friendly processes. Among other materials, biomass waste, which is a big environmental problem because most of it is discarded, can represent a potential sustainable alternative source in green synthesis, which can be addressed to the production of high-value carbon-based materials with different applications. This review aims to focus and explore in detail the recent progress in the use of biomass waste for imprinted polymers preparation. Specifically, different types of biomass waste in MIP preparation will be exploited: chitosan, cellulose, activated carbon, carbon dots, cyclodextrins, and waste extracts, describing the approaches used in the synthesis of MIPs combined with biomass waste derivatives
Synthesis of nicotinamide-based molecularly imprinted microspheres and in vitro controlled release studies
No full textNicotinamide (NAM), which is one of the two principal forms, together with nicotinic acid, of vitamin B3,
is both a food nutrient and a drug. Controlled NAM release systems are useful to extend the duration of
the drug’s pharmacological activity and to minimize administration frequency. In this paper, molecularly
imprinted polymers (MIPs) have been used as unconventional synthetic polymeric carriers, to prepare drug
delivery systems for sustained release of NAM molecules. In the present study, various MIPs micro-spheres
have been synthesized by using methacrylic acid as a functional monomer and ethylene glycol dimethacrylate
(EGDMA) as a cross-linker. Different stoichiometric ratios of the reagents have been used, in order
to evaluate their influence on NAM recognition and release properties. Non-imprinted systems have been
also been prepared as controls. MIPs binding capacity has been evaluated; NAM loading and in vitro release
studies, in buffer solution (pH 7.2), that mimics blood plasma conditions, have been performed. Polymer
P4 has given the best results since it enables it to rebind selectively and to prolong the release of NAM with
higher performance than the non-imprinted one
Cardanol: From Waste of the Cashew Agro-Industry to Hybrid Porphyrin/TiO2 Photocatalysts
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