Doan, Vu Ngoc, et al. Inorganica Chimica Acta 556 (2023): 121637.
The La-TEG (triethylene glycol) complex was successfully synthesized. In vitro tests showed that the La-TEG complex exhibited significant antibacterial activity against the growth of six bacterial strains: Bacillus subtilis, Staphylococcus aureus, Lactobacillus fermentum (N4), Escherichia coli, Salmonella enterica, Pseudomonas aeruginosa, as well as one pathogenic yeast, Candida albicans.
Synthesis of La-TEG Complex: 0.433 g of La(NO3)3·6H2O (1 mmol) was dissolved in 10 mL of acetonitrile (MeCN) in a 50 mL glass flask, yielding solution A. The mixture was stirred for 10 minutes until the salt was completely dissolved. Next, 0.13 mL of triethylene glycol (C6H14O4, TEG, 1 mmol) was dissolved in 10 mL of MeCN in a 20 mL beaker, yielding solution B. Solution B was then poured into solution A and stirred magnetically at room temperature for 24 hours. Subsequently, some solvent was allowed to evaporate naturally, during which crystalline complexes formed. The crystals were then separated from the solution and characterized using single-crystal X-ray diffraction (XRD) and NMR. To obtain the La-TEG powder, the solution was filtered through a Büchner funnel, washed three times with 10 mL of ethyl acetate (EtOAc), and then rotated under vacuum at 50 °C and 150 mbar. The product was vacuum-dried at 40 °C for 4 hours, yielding a white solid. The reaction yield was approximately 92%.
Li, Tongfei, et al. Journal of Alloys and Compounds 646 (2015): 603-611.
Using indium chloride (III) and selenium powder as precursors, a novel, simple, and ambient-pressure triethylene glycol (TEG) solution chemical route was employed to synthesize In₂Se₃ nanospheres, flower-like, and plate-like nanocrystals.
0.2 mmol of InCl₃·4H₂O was dissolved in 10 mL of TEG in a beaker, and stirred magnetically at room temperature for 1 hour to obtain the indium (III) precursor solution. 0.3 mmol of Se and 1 mL of EN were added to 40 mL of TEG solvent in a three-necked flask, forming the selenium precursor solution. The three-necked flask was then fitted with a heating mantle and magnetic stirring, connected to a condenser, and heated from room temperature to 230 °C under a nitrogen flow. The indium (III) precursor solution was rapidly injected into the selenium precursor solution in the three-necked flask, which was also magnetically stirred. The reaction solution was refluxed at 230 °C for 30 minutes, and then quickly cooled to room temperature using an ice-water bath.
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