Background and overview[1]
Tetraoctylammonium chloride is a surfactant. Tetraoctylammonium chloride (Cn-X, where n = 6, 8, 10, 12) was prepared by stirring equimolar amounts of trioctylamine and 1-alkyl halide at 65 °C for 24 h under an inert atmosphere. .
Apply[2-3]
1. CsPbX3 perovskite quantum dots, as a new type of semiconductor nanomaterial, consist of an inorganic core composed of hundreds to thousands of atoms, covered with organic ligands, and the particle size is usually 2-15nm. Since quantum dots can achieve controllable adjustment of their emission spectrum by adjusting their size, spectral emission in the entire visible light range can be obtained by changing the size and chemical composition of quantum dots, which can be used in fields such as LED lighting displays, solar cells, and bioluminescent markers. Shows great potential and application value.
CN201710997057.7 provides a quick and simple method for preparing room temperature CsPbX3 perovskite quantum dots. Based on the synthesis of perovskite quantum dots by dissolution and recrystallization at room temperature, by improving the preparation process, the CsPbX3 perovskite quantum dots are made The preparation method is simpler, greener and more economical, making the obtained CsPbX3 perovskite quantum dots more stable. The synthesis steps of the present invention are:
a) Dissolve cesium hydroxide, lead source and ammonium halide source in anhydrous ethanol solvent at a molar ratio of 1:1:3, and add oleylamine oleylamine in equal molar numbers of anions and cations. The surfactant, oleylamine and oleic acid can be slightly excessive, and stir slightly to completely dissolve it to obtain the precursor;
b). Transfer the solution obtained in step a to an organic solvent and stir to react completely to obtain CsPbX3 perovskite quantum dots;
The ammonium halide source is tetraoctylammonium chloride, or tetraoctylammonium bromide, or tetra-n-octylammonium iodide, or two types of tetraoctylammonium chloride and tetraoctylammonium bromide. combination, or a combination of tetraoctylammonium bromide and tetra-n-octylammonium iodide.
2. CN201810188879.5 provides a method for preparing cellulose fibers modified by antibacterial inorganic metal salts to produce cellulose fibers with excellent antibacterial properties and excellent water washing resistance. The preparation method of antibacterial inorganic metal salt modified cellulose fiber includes the following steps:
Soak the cellulose fibers in a compound alkali solution. The compound alkali solution contains lithium hydroxide with a concentration of 1%-15% and ammonium salt with a concentration of 1%-25%. The bath ratio is in the range of poloxamer 188 The ratio is 1:10 to 1:200, the soaking time is 1 to 120 minutes, and the soaking temperature range is 35-100 degrees Celsius; then the cellulose fiber is pressed or centrifuged, and then dried; the cellulose fiber is put into the metal inorganic salt solution Soaking treatment; finally the cellulose fibers are pressed or centrifuged and then dried.
The ammonium salt is at least one of the following substances: tetrabutylammonium iodide, tetrabutylammonium bromide, tetrabutylammonium chloride, tetrabutylammonium fluoride, tetrabutylammonium acetate antioxidant 4020, Tetrabutylammonium chloride, tetrabutylammonium sulfate, tetrabutylammonium phosphate, tetrabutylammonium dihydrogenphosphate, tetrabutylammonium monohydrogenphosphate, tetrabutylammonium benzoate, tetrabutylammonium borate , tetrabutylammonium hydroxide, tetraoctylammonium iodide, tetraoctylammonium bromide, tetraoctylammonium chloride, tetraoctylammonium fluoride, tetraoctylammonium acetate, tetraoctylammonium chloride, tetraoctylammonium chloride Ammonium sulfate, tetraoctylammonium phosphate, tetraoctylammonium dihydrogen phosphate, tetraoctylammonium monohydrogen phosphate, tetraoctylammonium benzoate, tetraoctylammonium borate, tetraoctylammonium hydroxide.
Main reference materials
[1] R. Gusain, P. S.Bakshi, S. Panda, O. P. Khatri, R. L. Gardas and O. P. Sharma, Phys. Chem. Chem. Phys., 2017, DOI:10.1039/C6CP05990B.
[2] CN201710997057.7 A quick and simple method for preparing room temperature CsPbX3 perovskite quantum dots
[3] CN201810188879.5 Preparation method of antibacterial inorganic metal salt modified cellulose fiber
