Supramolecular polymer hydrogel based on double-three-foot gelator, and application thereof
A supramolecular polymer, gel factor technology, which is applied in the analysis of materials, material excitation analysis, material analysis by optical means, etc., can solve the problems of ultrasensitive detection and separation that have not been reported yet.
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Embodiment 1
[0038] The synthesis of embodiment 1, FHFA-G
[0039] (1) Synthesis of guest gelling factor FA: Add trimesoyl chloride (0.2655g, 1.0mmol) to DMF (10mL), stir at room temperature to fully dissolve; add 4-amino Pyridine (0.3106g, 3.3mmol), stirred at room temperature to fully dissolve; Pour the DMF solution dissolved in 4-aminopyridine into a round bottom flask, add triethylamine (1mL) as a catalyst, and use a constant pressure dropping funnel A DMF solution in which trimesoyl chloride was dissolved was slowly added dropwise to the round-bottomed flask, while stirring at room temperature for 24 hours. After the reaction, the product was recrystallized, and the quality of the obtained TA was 0.3943 g, and the yield was 90%. The synthetic formula of FA is as follows:
[0040]
[0041] The characterization data of FA are as follows: 1 H NMR (400 MHz, DMSO- d 6 ), δ / ppm: 10.98 (s, 3H), 8.79-8.75 (t, J = 8.6 Hz, 6H), 8.55-8.52 (t, J = 5.4 Hz, 6H), 7.84-7.82 (t, J = 4.4 ...
Embodiment 2
[0046] Embodiment 2, FHFA-G continuous detection measures Th 4+ and Hg 2+
[0047] Adding Fe to FHFA-G 3+ , Hg 2+ , Ag + , Ca 2+ , Cu 2+ ,Co 2+ , Ni 2+ , Cd 2+ , Pb 2+ , Zn 2+ , Cr 3+ , Mg 2+ , Ba 2+ , Al 3 + , Eu 3+ , Tb 3+ , La 3+ and Th 4+ aqueous solution, if the fluorescence of FHFA-G is significantly enhanced and turns green, it means that the addition of Th 4+ . Incorporation of Th into FHFA-G 4+ After Th 4+ Interaction with FHFA-G produces metallogel FHFA-GTh. Fe was then added to the metal gel FHFA-GTh 3+ , Hg 2+ , Ag + , Ca 2+ , Cu 2+ ,Co 2+ , Ni 2+ , Cd 2+ , Pb 2+ , Zn 2+ , Cr 3+ , Mg 2+ , Ba 2+ , Al 3+ , Eu 3+ , Tb 3+ , La 3 + aqueous solution, if the fluorescence of the gel weakens again and returns to the original fluorescence state, it means that the addition of Hg 2+ .
Embodiment 3
[0048] Embodiment 3, preparation of rewritable intelligent luminescent material
[0049]Prepare a supramolecular polymer hydrogel FHFA-G with a volume of 400 μL, heat and melt the gel, pour it evenly on a clean glass plate, cool and dry at room temperature to form a gel film, The gel film has weak yellowish fluorescence. Use a fine brush to take an appropriate amount of Th 4+ The aqueous solution is evenly spread on the gel film, and it can be observed that the gel film shows green fluorescence under a 365nm fluorescent lamp. Then, use a fine brush to dip in an appropriate amount of Hg 2+ The aqueous solution is evenly spread on the gel film with green fluorescence, and the fluorescence of the gel is obviously weakened and becomes pale yellow. The above results show that the gel film prepared based on FHFA-G can detect Th in the environment conveniently, quickly and efficiently. 4+ and Hg 2+- , and, the gel film can also be used as a rewritable smart luminescent material....
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