A kind of amphiphilic azafluoroboron dipyrrole fluorescent dye and its preparation method
A technology of heterofluoroboron dipyrrole and fluorescent dyes, applied in azo dyes, organic dyes, luminescent materials, etc., can solve the problem of short ultraviolet absorption wavelength, etc., and achieve the effect of sharp peak shape and high intensity
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Embodiment 1
[0036] Embodiment 1 (C 30 h 38 o 3 )
[0037] 4'-(3-propynyloxy)-4-(dodecyloxy)-chalcone (C 30 h 38 o 3 ) synthesis: p-propynyloxyacetophenone 15mmol is dissolved in the mixed solution of ethanol 50ml containing potassium hydroxide 60mmol and water 15ml, stirred for 30min, and the ethanol solution containing p-dodecyloxyphenylacetaldehyde 15mmol is slowly added dropwise , reacted at room temperature for 12h, filtered to obtain a precipitate, and washed with water to neutral pH to obtain a white powdery solid. 1 H NMR: (400MHz, CDCl 3 ):8.05(d,J=8.8Hz,2H),7.80(d,J=15.6Hz,1H),7.60(d,J=8.5Hz,2H),7.44(d,J=15.6Hz,1H), 7.07(d,J=8.7Hz,2H),6.93(d,J=8.6Hz,2H),4.78(d,J=2.1Hz,2H),3.99(t,2H),2.56(s,1H)1.80 (m,2H),1.46-1.27(m,18H),0.90(t,3H); image 3 shown.
[0038]
Embodiment 2
[0039] Embodiment 2 (C 62 h 74 BF 2 N 3 o 4 )
[0040]1,7-(4-dodecyloxy)phenyl-3,5-(4-propynyloxy)phenylazafluoroborondipyrrole (C 62 h 74 BF 2 N 3 o 4 ) Synthesis of fluorescent dye: 12 mmol of 4'-(3-propynyloxy)-4-(dodecyloxy)-chalcone and 400 mmol of ammonium acetate were mixed, refluxed for 12 hours, 200 ml of water was added, and 200 ml of dichloromethane was extracted Three times, dried over anhydrous sodium sulfate, filtered, and the filtrate was rotary evaporated to remove the organic solvent.
[0041] Add 50 ml of dry dichloromethane to the obtained compound under nitrogen atmosphere, add 10 mmol of DIPEA, add 12 mmol of boron trifluoride ether solution after 30 min, and react at room temperature for 24 h. Sequentially add saturated ammonium chloride solution, sodium chloride solution, and water to extract separately, the obtained organic solvent is dried with anhydrous sodium sulfate, and the obtained filtrate is filtered and rotary evaporated to remove the...
Embodiment 3
[0043] Embodiment 3 (C 72 h 96 BF 2 N 9 o 8 )
[0044] 1,7-(4-dodecyloxy)phenyl-3,5-(4-propynyloxy)phenylazafluoroboron dipyrrole 0.1mmol, azide diethylene glycol methyl ether 0.23mmol , 0.4mmol of copper sulfate pentahydrate, 0.5mmol of L-ascorbic acid were successively added into a mixed solvent of 30ml of acetonitrile, 30ml of tetrahydrofuran and 2ml of water, and stirred at room temperature for 24h. The organic solvent was removed by rotary evaporation, dichloromethane was added to dissolve and washed three times with water, the obtained organic solvent was dried with anhydrous sodium sulfate, and the obtained filtrate was filtered to remove the organic solvent by rotary evaporation. The product was obtained by preparative column chromatography, and the volume ratio of the eluent was dichloromethane:methanol=20:1. 1 H NMR: (400MHz, CDCl 3 ):8.07(m,8H),7.85(s,2H),7.10(d,j=9.0Hz,4H),6.99(d,j=8.9Hz,4H),6.92(s,2H),4.59(t ,4H),4.06(t,4H),3.90(t,4H),3.60(m,4H),3.50(m,4H)...
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