Bis-Schiff base aluminum ion fluorescent probe as well as synthesis method and application thereof
A fluorescent probe, Schiff base aluminum technology, applied in the field of fluorescent probes, can solve problems such as pollution of the environment, and achieve the effects of simple synthesis method, strong fluorescence response, and high yield
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[0034] Example 1
[0035] Add 2.7g (10mmol) of 3,5-dinitro-4-chlorobenzotrifluoride, 4.48g (80mmol) of active iron powder, 0.1g of tetrabutylammonium bromide, 30mL of ethanol, and 20mL of water into a 250mL three-necked flask. Under stirring conditions, the temperature is controlled at 80-100°C, and the reaction is carried out for 7-9h. Filter while hot, remove the ethanol from the filtrate under reduced pressure, then extract with ether, dry the organic phase, distill to remove the ether, and obtain a brown-yellow powder, namely 3,5-diamino-4-chlorobenzotrifluoride, with a yield of 85% .
[0036] FT-IR(KBr): 3458cm -1 , 3361cm -1 , 1622cm -1 , 1451cm -1 , 1401cm -1 , 1316cm -1 , 1017cm -1 ;
[0037] ESI-MS: m / z=211.58(M + +1).
Example Embodiment
[0038] Example 2
[0039] Add 1.08g 3,5-dinitro-4-chlorobenzotrifluoride and 10g SnCl to a 250mL three-neck bottle 2 ·2H 2 O, 15mL water and 30mL methanol, 0.1g ammonium chloride, heated to reflux, reacted for 6-8h, after the reaction, the methanol was removed, and then extracted with ethyl acetate, dried, filtered, and distilled under reduced pressure to obtain a brown-yellow solid. The rate is 61.5%.
Example Embodiment
[0040] Example 3
[0041] Add 2.7g (10mmol) 3,5-dinitro-4-chlorobenzotrifluoride, 5.2g (80mmol) zinc powder, 0.1g tetrabutylammonium bromide, 30mL ethanol, 20mL water in a 250mL three-necked flask, Under stirring conditions, the temperature is controlled at about 80-100°C, and the reaction is carried out for 7-9h. Filter while hot, remove ethanol from the filtrate under reduced pressure, then extract with ether, dry the organic phase, and distill to remove ether to obtain a brown powder with a yield of 75%.
[0042] 2. Preparation of double Schiff base aluminum ion fluorescent probe
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