A kind of network polymer based on naphthalene tube and its application in drinking water purification
A polymer and drinking water technology, applied in other chemical processes, alkali metal compounds, alkali metal oxides/hydroxides, etc., can solve problems such as difficult and low partition coefficients
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[0079] Cyclic compound 1a 2a Preparation of:
[0080] The specific preparation method is as follows:
[0081]
[0082] In a flask, combine benzotriazol-1-yl-oxytripyrrolidinophosphorus hexafluorophosphate (PyBOP) (12 g, 23.1 mmol) and N,N-diisopropylethylamine (DIEA) (4.96 g , 38.4 mmol) was dissolved in 400 mL of DMF. Dissolve diacid (2g, 3.84mmol) and diamine (2.76g, 3.84mmol) in a syringe containing DMF (60mL) respectively, add diamine and diacid dropwise to the above flask with a double syringe pump, add dropwise The time is 8h. The mixture was stirred at room temperature for 24 hours, and then the solvent was removed, and the crude products were separated by column chromatography to obtain cyclic compounds 1a and 2a (eluent: EA / CH). 2 Cl 2 = 1 / 3).
Embodiment 1
[0084] The present embodiment provides a network polymer P1 based on naphthalene tube, and its preparation method is as follows:
[0085]
[0086] The cyclic compound 1a (400 mg), bisazide (154 mg), copper sulfate pentahydrate (50 mg) and sodium ascorbate (50 mg) were dissolved in 80 mL of dimethyl sulfoxide and reacted at 80° C. for 48 hours under argon protection. After the reaction, it was poured into 50 mL of water, and a large amount of solid was precipitated. The solid was washed three times with a saturated aqueous solution of EDTA (20 mL), methanol (20 mL), and ultrapure water (20 mL), and then vacuum-dried at 80 ° C for 10 hours to obtain Polymer P1 (where L 1 for ), the weight-average molecular weight of P1 was 1.5×10 measured by gel chromatography 4 g / mol.
Embodiment 2
[0088] The present embodiment provides a kind of network polymer P2 based on naphthalene tube, and its preparation method is as follows:
[0089]
[0090] Cyclic compound 2a (400 mg), diazide (154 mg), copper sulfate pentahydrate (50 mg) and sodium ascorbate (50 mg) were dissolved in 80 mL of dimethyl sulfoxide, and reacted at 80° C. for 48 hours under argon protection. After the reaction, it was poured into 50 mL of water, and a large amount of solid was precipitated. The solid was washed three times with a saturated aqueous solution of EDTA (20 mL), methanol (20 mL), and ultrapure water (20 mL), and then vacuum-dried at 80 ° C for 10 hours to obtain Polymer P2 (where L 1 for ), the weight-average molecular weight of P2 was 1.4×10 measured by gel chromatography 4 g / mol.
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