Preparation method of super-molecular nano fiber for magnetic resonance imaging radiography
A magnetic resonance imaging and nanofiber technology, which is applied in the field of supramolecular nanofiber preparation, can solve the problems of long detection time, high detection cost, low sensitivity, etc., and achieves the advantages of simple preparation method, strong bonding ability and broad application prospects. Effect
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[0024] A method for preparing supramolecular nanofibers for magnetic resonance imaging contrast, comprising the steps of:
[0025] 1) Dissolve 630mg of 6-isothiocyanato-6-deoxy-permethylated β-cyclodextrin and 13mg of ethylenediamine in 10mL of acetonitrile solvent under the protection of argon, and stir at 22°C for 10 hours, The solvent was removed by rotary evaporation, and the remaining solid was purified by column chromatography to obtain 300 mg of white diPMCD solid with a yield of 51%.
[0026]1H NMR (400MHz, CDCl3) δ7.54(s,2H),6.28(s,2H),5.13(d,J=10.4Hz,10H),5.01(s,2H),4.94(s,2H),4.20 –3.04(m,208H).13C NMR(100MHz,CDCl3)δ182.63,99.88,99.08,98.98,98.82,82.29,82.10,81.92,81.76,81.63,81.10,80.41,80.24,80.13,77.26,71.40, ,71.07,71.00,70.90,70.83,70.01,61.64,61.54,61.41,61.36,61.32,59.41,59.24,59.11,59.04,58.86,58.71,58.65,58.53,58.39,43.95,42.97 z:[M+Na]+calcd for C 128 h 226 N 4 o 68 S 2 Na + 2994.3638;found: 2994.3680.
[0027] 2) Dissolve 15mg diPMCD and 12.5mg m...
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