Tyrosine rare earth luminescent probe as well as preparation method and application thereof
A technology of rare earth luminescence and tyrosine, applied in luminescent materials, chemical instruments and methods, fluorescence/phosphorescence, etc., can solve the problems of expensive chromatography, equipment and long measurement time, and achieve simple preparation methods, rapid measurement, and highly specific effect
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Embodiment 1
[0035] Preparation of Tyrosine Rare Earth Luminescent Probe Tb-IMDC-hemin
[0036]Add 1 mL of 20 mM 4,5-imidazoledicarboxylic acid (IMDC) in DMF to 8 mL of N,N-dimethylformamide (DMF) solution, 1 mL of 10 mM Tb(NO 3 ) 3 Aqueous solution and 1mL DMF solution of hemin (hemin) with a concentration of 0.5mM constitute IMDC: Tb 3+ : hemin molar ratio of 2:1:0.05 mixed solution, after 30 minutes of continuous stirring, the above mixed solution was transferred to a high-temperature reactor, reacted at 150 ° C for 5 hours, cooled to room temperature, centrifuged to collect brown precipitate, precipitated with ethanol and They were washed three times with ultrapure water, dried at 60°C and used for later use. figure 1 It is a transmission electron micrograph of the prepared tyrosine rare earth luminescent probe Tb-IMDC-hemin, which shows that Tb-IMDC-hemin is a network-like nanomaterial. figure 2 It is the infrared spectrogram of the prepared tyrosine rare earth luminescent probe T...
Embodiment 2
[0038] Preparation of Tyrosine Rare Earth Luminescent Probe Tb-IMDC-hemin
[0039] Add 1mL of 20mM 4,5-imidazoledicarboxylic acid DMF solution to 8mL N,N-dimethylformamide (DMF) solution, add 1mL of 10mM Tb(NO 3 ) 3 Aqueous solution and 1mL DMF solution of hemin at a concentration of 1mM constitute IMDC: Tb 3+ : hemin molar ratio of 2:1:0.1 mixed solution, after 30 minutes of continuous stirring, the above mixed solution was transferred to a high temperature reactor, reacted at 150 ° C for 5 hours, cooled to room temperature, centrifuged to collect brown precipitate, precipitated with ethanol and They were washed three times with ultrapure water, dried at 60°C and used for later use. The prepared tyrosine rare earth luminescent probe Tb-IMDC-hemin is similar to figure 1 network nanomaterials.
Embodiment 3
[0041] Tyrosine Rare Earth Luminescent Probe Tb-IMDC-Fe 3 O 4 preparation
[0042] 1. Mix 1mL 0.5M Fe(NO 3 ) 3 The aqueous solution was added to 6 mL of ethylene glycol, and 0.068 g of sodium acetate was added dropwise to Fe(NO 3 ) 3 in solution. Stir and mix for 30 minutes, transfer to a stainless steel autoclave lined with tetrafluoroethylene, heat at 200°C for 8h, cool to room temperature and centrifuge the precipitate, wash the precipitate with absolute ethanol 6 times, and dry at 80°C for 1h to obtain Fe 3 O 4 Nanoparticles.
[0043] 2. Add 1mL of 0.2M 4,5-imidazoledicarboxylic acid (IMDC) in DMF and 1mL of 0.1MTb (NO 3 ) 3 A mixture of aqueous solutions. 50mg Fe 3 O 4 Nanoparticles were added to 1mL ethanol, ultrasonically dispersed for 20 minutes, and immediately added to the above DMF mixture to form IMDC: Tb 3+ : Fe 3 O 4 The molar ratio was 2:1:2, stirred for 20 minutes, the mixture was sealed in a tetrafluoroethylene-lined autoclave, reacted at 150 °...
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