Preparation method of alternating fluorine-containing polymer magnetic resonance imaging probe
A magnetic resonance imaging and polymer technology, applied in the field of 19FMRI, can solve the problems of fluorine-containing groups prone to dipole-dipole interaction, etc., and achieve good biocompatibility, good application prospects, and good biocompatibility Effect
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Embodiment 1
[0021] Add ethylene glycol diglycidyl ether (10mmol) and trifluoroethylamine (10mmol) into 20mL of absolute ethanol, then react at 60°C for 10h, cool to room temperature, and rotary evaporate at 50°C to obtain an alternating fluoropolymer PEGDE, the structural formula is shown in formula 1, wherein n=0, m=6, R is -CF 3 . Dissolve 20mg of PEGDE in 1mL of dichloromethane, shake evenly, add 10mL of ultrapure water, under the power of 300W, ultrasonic for 3 seconds, stop for 3 seconds, total ultrasonic for 6 minutes, stir at room temperature until the solution is clear and transparent, spin at 37°C Evaporate to 1 mL to obtain alternating fluorine-containing polymer fluorine magnetic resonance imaging probe PEGDE NPs.
[0022] Stability Determination of Alternating Fluoropolymer Fluorine Magnetic Resonance Imaging Probes PEGDE NPs:
[0023] Take PEGDE NPs and dissolve them in water to test their size distribution, then store them in a refrigerator at 4°C, test the particle size d...
Embodiment 2
[0032] Add ethylene glycol diglycidyl ether (10mmol), trifluoroethylamine (9mmol), and oleylamine (1mmol) into 20mL of absolute ethanol, then react at 60°C for 10h, cool to room temperature, and rotary evaporate at 50°C Obtain alternating fluoropolymer PEGDE, the structural formula is as shown in formula 1, wherein n=1, m=5, R is -CF 3 . Dissolve 20mg of PEGDE in 1mL of dichloromethane, shake evenly, add 10mL of ultrapure water, under the power of 300W, ultrasonic for 3 seconds, stop for 3 seconds, total ultrasonic for 6 minutes, stir at room temperature until the solution is clear and transparent, spin at 37°C Evaporate to 1 mL to obtain alternating fluorine-containing polymer fluorine magnetic resonance imaging probe PEGDE NPs.
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