Porous polymer with high stability and flexibility and application thereof
A porous polymer, high-stability technology, applied in other chemical processes, chemical instruments and methods, separation methods, etc., to achieve the effects of high adsorption capacity, high stability, and good reversibility
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Embodiment 1
[0022] A porous polymer with high stability and flexibility is prepared by using 2,5-divinylpyridine as a vinyl monomer, AIBN as a free radical initiator, and THF as a solvent.
[0023] Wherein, the preparation method of 2,5-divinylpyridine is as follows:
[0024]
[0025] in N 2 Under the condition, add 2,5-dibromopyridine (5.0g, 21.1mmol), K 2 CO 3 Pd (PPh 3 ) 4 (1.22g, 1.05mmol) in 110mL toluene / THF / H 2 O (50:50:10) mixture. Then, the resulting mixed system was stirred at 90° C. for 24 hours. At the end of the reaction (checked by TLC), the precipitate was filtered and the solvent was removed in vacuo, the crude product was further purified by column chromatography to give the desired product. Yield: 65.6%.
[0026] Synthesis of pyridine-functionalized porous organic polymers: 1 g of 2,5-divinylpyridine (v-Py) was dissolved in 10 mL of DMF, then 50 mg of azobisisobutyronitrile (AIBN) was added and stirred at room temperature for 3 h Afterwards, the mixture was t...
Embodiment 2
[0028] A porous polymer with high stability and flexibility is prepared by using 2,5-divinylpyrazine as a vinyl monomer, AIBN as a free radical initiator, and THF as a solvent.
[0029] Wherein, the preparation method of 2,5-divinylpyrazine is as follows:
[0030]
[0031] in N 2 Under the condition, add 2,5-dibromopyrazine (5.0g, 21.0mmol), K 2 CO 3 Pd (PPh 3 ) 4 (485.8mg, 0.42mmol) in 150mL toluene / THF / H 2 O(1:1:0.2) mixture. Then, the resulting mixed system was heated to 90° C. for 24 hours to react. At the end of the reaction (checked by TLC), the precipitate was filtered and the solvent was removed in vacuo, the crude product was further purified by column chromatography to give the desired product. Yield: 1.82 g (65.7%).
[0032] Synthesis of pyrazine-functionalized porous organic polymers: Dissolve 1 g of 2,5-divinylpyrazine in 10 ml of DMF, then add 50 mg of azobisisobutyronitrile (AIBN) and stir at room temperature for 3 hours. The mixture was transferred ...
Embodiment 3
[0034] A porous polymer with high stability and flexibility is prepared by using 2,5-divinylpyrimidine as a vinyl monomer, AIBN as a free radical initiator, and THF as a solvent.
[0035] Wherein, the preparation method of 2,5-divinylpyrimidine is as follows:
[0036]
[0037] in N 2 Under the condition, add 5-bromo-2-iodopyrimidine (5.0g, 17.6mmol), K 2 CO 3 Pd (PPh 3 ) 4 (406ml, 0.352mmol) in 110ml toluene / THF / H 2 O(1:1:0.2) mixture. Then, the resulting mixed system was heated to 90° C. to react overnight. At the end of the reaction (checked by TLC), the precipitate was filtered and the solvent was removed in vacuo, the crude product was further purified by column chromatography to give the desired product. Yield: 1.15 g (49.6%).
[0038] Synthesis of pyrimidine-functionalized porous organic polymers: 1 g of 2,5-divinylpyrimidine was dissolved in 10 mL of DMF, then 50 mg of azobisisobutyronitrile (AIBN) was added and stirred at room temperature for 3 h, the mixture ...
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