Preparation method and application of a multifunctional ultrasensitive zn2+ two-photon detection fluorescent molecular probe
A fluorescent molecular probe and multifunctional technology, applied in the field of analytical chemistry, can solve the problems of inaccurate quantitative results, unfavorable naked eye detection, single detection method, etc., and achieve the effect of improving detection sensitivity, excellent specificity, and fast detection speed
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[0050] Embodiment 1: Preparation of multifunctional ultrasensitive Zn 2+ two-photon detection probe
[0051] (1) Dissolve 2,4-dihydroxybenzaldehyde in ethanol at a concentration of 0.02-0.06g / mL, then add diethyl glutaconate at a concentration of 0.067g / mL, mix well and add anhydrous Piperidine 2-5 mL, refluxed for 24 hours, cooled, a yellow solid was precipitated, and the solid was recrystallized with absolute ethanol to obtain product 1;
[0052] (2) Dissolve product 1 in anhydrous pyridine at a concentration of 0.025g / mL, then add acetic anhydride at a concentration of 1mol / L, stir for 0.5h, add 40 times the mass of crushed ice, and stir for 10min to precipitate an off-white solid. The solid was eluted with acetonitrile-dichloromethane eluent with a volume ratio of 1:5, and rotary evaporated to obtain product 2;
[0053] (3) Dissolve product 2 in tetrahydrofuran at a concentration of 0.011 g / mL, then add 4% osmium tetroxide aqueous solution, stir for 0.5 h, then add sodiu...
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