an er with blu-ray upconversion 3+ /tm 3+ -mofs fluorescent material and preparation method thereof
A fluorescent material and blue light technology, applied in the field of material chemistry, can solve problems such as unfavorable biological tissue imaging, limited application prospects, tissue fluorescence interference, etc., and achieve the effects of improving energy transfer efficiency, simple process, and low cost
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Embodiment 1
[0030] (1) Sodium citrate-based Er with blue light upconversion 3+ / Tm 3+ -MOFs fluorescent material (MOFs-Y 0.92 / Er 0.6 / Tm 0.2 )
[0031] The preparation method is as follows
[0032] 1) Weigh 0.08607g of erbium oxide, 0.08682g of thulium oxide, and 1.0161g of yttrium oxide and dissolve them in concentrated nitric acid respectively, heat and stir to form erbium nitrate, thulium nitrate, and yttrium nitrate solutions, and dilute to 45ml with deionized water respectively to prepare the concentration 0.01mol / L, 0.01mol / L, 0.2mol / L stock solutions of erbium nitrate, thulium nitrate, and yttrium nitrate.
[0033] 2) Weigh 0.14705g (0.5mmol) of sodium citrate dihydrate and mix with 10ml of deionized water, measure 6ml of Er(NO 3 ) 3 solution, 2ml of Tm(NO 3 ) 3 solution, 4.6ml of Y(NO 3 ) 3 solution, and were added to the sodium citrate solution, ultrasonic treatment for 30min. Weigh 0.10507g (0.5mmol) of the organic ligand trimesic acid and dissolve it in 40ml of N,N...
Embodiment 2
[0048] Effect of the amount of sodium citrate on crystal nucleation
[0049] (1) The preparation method is as follows:
[0050] 1) Weigh 0.08607g of erbium oxide, 0.08682g of thulium oxide, and 1.0161g of yttrium oxide and dissolve them in concentrated nitric acid respectively, heat and stir to form erbium nitrate, thulium nitrate, and yttrium nitrate solutions, and dilute to 45ml with deionized water respectively to prepare the concentration 0.01mol / L, 0.01mol / L, 0.2mol / L stock solutions of erbium nitrate, thulium nitrate, and yttrium nitrate.
[0051] 2) Weigh 0.08823g (0.3mmol), 0.11764g (0.4mmol), 0.14705g (0.5mmol) of sodium citrate dihydrate and mix them with 10ml of deionized water, and measure 6ml of Er(NO 3 ) 3 solution, 2ml of Tm(NO 3 ) 3 solution, 4.6ml of Y(NO 3 ) 3 solution, and were added to the sodium citrate solution, ultrasonic treatment for 30min. Weigh 0.10507g organic ligand trimesic acid and dissolve in 40ml of N,N-dimethylformamide (DMF) solution, ...
Embodiment 3
[0060] Influence of Doping Ratio of Rare Earth Ions on Luminescence Intensity
[0061] (1) The preparation method is as follows:
[0062] 1) Weigh 0.08607g of erbium oxide, 0.08682g of thulium oxide, and 1.0161g of yttrium oxide and dissolve them in concentrated nitric acid respectively, heat and stir to form erbium nitrate, thulium nitrate, and yttrium nitrate solutions, and dilute to 45ml with deionized water respectively to prepare the concentration 0.01mol / L, 0.01mol / L, 0.2mol / L stock solutions of erbium nitrate, thulium nitrate, and yttrium nitrate.
[0063] 2) Weigh 0.14705g (0.5mmol) of sodium citrate dihydrate and mix with 10ml of deionized water evenly. In order to verify Er 3+ 、Tm 3+ , Y 3+ The effect of the doping ratio of ions on the luminous intensity of MOFs materials, in this experiment Er 3+ 、Tm 3+ , Y 3+ The doping ratio of is selected as:
[0064] ①Er 3+ 、Tm 3+ , Y 3+ =5%, 2%, 93%, that is, measure 2.5ml of Er(NO 3 ) 3 solution, 1ml of Tm(NO 3 )...
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