Refernces
10.1016/j.ica.2011.06.036
The study focuses on the synthesis and characterization of photofunctional Eu3+/Tb3+ hybrid materials, which are inorganic silica covalently linked to organic polymer chains through sulfide bridges. The main chemicals used include 2-thiosalicylic acid (TSA), crosslinking reagents 3-chloropropyltrimethoxysilane (CTPMS) and 3-(triethoxysilyl)-propyl isocyanate (TESPIC), tetraethoxysilane (TEOS), europium and terbium nitrates, and organic polymers polyacrylamide (PAM) and polyethylene glycol (PEG). These chemicals serve to create sulfide-bridged molecular linkages and polymeric silane derivatives, which are then assembled into multi-component hybrid materials through co-hydrolysis and co-polycondensation with TEOS. The purpose of these materials is to improve photoluminescence properties by integrating the benefits of both inorganic silica and organic polymers, such as enhanced thermal or optical stabilities, chemical stability, and mechanical strength. The study aims to develop hybrid systems with improved luminescence behavior for potential applications in luminescence and laser fields.
10.1007/BF00776329
The study investigates the biological activity of l-aroxysilatranes (la-c) and l-aroxysilatran-3-ones (lla, b). These compounds were synthesized through specific chemical reactions. The l-aroxysilatranes were produced by reacting tetraethoxysilane and triethanolamine with substituted phenols in xylene, while the l-aroxysilatran-3-ones were synthesized from N-bis(2-hydroxyethyl)aminoacetic acid and fluorophenyltrimethoxysilanes in a DMFA and benzene medium. The study focused on their potential roles in various biological processes, such as stabilizing erythrocyte membranes, inhibiting platelet aggregation, acting as anticoagulants, and stimulating the proliferative-repair function of connective tissue. The results indicated that compound Ia (l-(3-chlorophenoxy)silatrane) showed notable biological activity, including antihemolytic effects, inhibition of platelet aggregation, and positive effects on the biochemical indices of granulation-fibrous tissue, suggesting its potential therapeutic applications.
10.1016/j.conbuildmat.2019.117445
The study investigates the effectiveness of ethyl silicate as a consolidant and protective coating for earthen plasters, aiming to enhance their durability and resistance to environmental factors. Ethyl silicate (specifically tetraethyl orthosilicate or TEOS) is used due to its ability to react with atmospheric humidity to form a silica gel (SiO2), which strengthens the material's surface and provides hydrophobicity by blocking pores. The research evaluates the impact of ethyl silicate on the physical properties of earthen plasters through various tests, including peeling tests, water absorption measurements, durability tests against rainwater and acid rain, and microstructural analyses using Mercury Intrusion Porosimetry (MIP) and Scanning Electron Microscopy (SEM) with EDX mapping. The results indicate that ethyl silicate significantly improves the cohesion, water resistance, and acid resistance of the plasters, reduces their porosity, and enhances their overall durability, making it a promising consolidant for the preservation of earthen heritage materials.
10.1016/j.molliq.2014.07.039
This research aimed to develop an efficient, green, and one-pot synthesis method for 1,3-thiazolidin-4-one using a magnetically recyclable ionic liquid (ILs) supported on FeNi3 nanocatalyst. The purpose was to create a highly active and stable catalyst with high densities of functional groups under solvent-free conditions, utilizing rapid and easy immobilization techniques and low-cost precursors. The study successfully synthesized FeNi3-ILs nanoparticles, characterized them, and demonstrated their catalytic activity, achieving high to excellent yields of 1,3-thiazolidin-4-ones. The catalyst was found to be easily recoverable and reusable without significant loss of activity. Key chemicals used in the process included FeCl2·4H2O, NiCl2·6H2O, ammonium hydroxide, hydrazine hydrate, tetraethyl orthosilicate (TEOS), chlorosulfonic acid, and ethanolamine. The research concluded that FeNi3-ILs MNPs are a promising catalyst for the efficient one-pot synthesis of 1,3-thiazolidin-4-one and contribute to the development of new catalytic systems for organic synthesis.
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