Regulated and controlled synthesis and fluorescence regulation and control of low-temperature white-light rare earth-organic coordination polymer
A technology of coordination polymers and white light, which is applied in the direction of luminescent materials, chemical instruments and methods, etc., can solve the problems that energy transfer is difficult to control, luminescence is greatly affected by temperature, etc., and the synthesis method is simple and fast, with low cost and high yield. high effect
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Embodiment 1
[0025] Low temperature white light mixed rare earth-organic coordination polymer (Eu 0.0667 Tb 0.0667 Dy 0.8666 )(HL)(H 2 Synthesis of O)(DEF)
[0026] Ligands were weighed P -terphenyl-2,2̎,4,4̎-tetracarboxylic acid (H 4 L) 40 mg, rare earth salt Eu 2 (SO 4 ) 3 . 8H 2 O 5 mg, Tb 2 (SO 4 ) 3 . 8H 2 O 5 mg, Dy 2 (SO 4 ) 3 . 8H 2 O 65 mg in a glass bottle with a volume of 15 ml, to this mixture was added 4 ml of N,N-diethylformamide (DEF) and 4 ml of distilled water. After ultrasonication for 15 minutes and mixing evenly, the glass bottle containing the reaction substance was placed in an oven at 85°C for 4 days. After four days, it was taken out and cooled down to room temperature naturally, and a yellow diamond-shaped transparent crystal was obtained. Rinse the crystals with distilled water, collect the crystals, and dry them at room temperature.
Embodiment 2
[0028] Low temperature white light mixed rare earth-organic coordination polymer (Eu 0.0666 Tb 0.4667 Dy 0.4667 )(HL)(H 2 Synthesis of O)(DEF)
[0029] Ligands were weighed P -terphenyl-2,2̎,4,4̎-tetracarboxylic acid (H 4 L) 40 mg, rare earth salt Eu 2 (SO 4 ) 3 . 8H 2 O 5 mg, Tb 2 (SO 4 ) 3 . 8H 2 O 35 mg, Dy 2 (SO 4 ) 3 . 8H 2 O 35 mg in a glass bottle with a volume of 15 ml, to this mixture was added 4 ml of N,N-diethylformamide (DEF) and 4 ml of distilled water. After ultrasonication for 15 minutes and mixing evenly, the glass bottle containing the reaction substance was placed in an oven at 85°C for 4 days. After four days, it was taken out and cooled down to room temperature naturally, and a yellow diamond-shaped transparent crystal was obtained. Rinse the crystals with distilled water, collect the crystals, and dry them at room temperature.
Embodiment 3
[0031] Low temperature white light mixed rare earth-organic coordination polymer (Eu 0.0667 Tb 0.0667 Dy 0.8666 )(HL)(H 2 O)(DEF) and (Eu 0.0666 Tb 0.4667 Dy 0.4667 )(HL)(H 2 O) Eu in (DEF) 3+ , Tb 3+ , and Dy 3+ Determination of metal content
[0032] The content of rare earth ions in the mixed rare earth-organic coordination polymer is to use the Ultima2 inductively coupled plasma atomic emission spectrometer of Jobin Yvon Company to measure the content of rare earth ions in two kinds of mixed rare earth-organic coordination polymers, which are respectively:
[0033] (Eu 0.0667 Tb 0.0667 Dy 0.8666 )(HL)(H 2 O)(DEF):Eu 3+ , 2.04%; 3+ , 2.64%; and Dy 3+ ,19.27%.
[0034] (Eu 0.0666 Tb 0.4667 Dy 0.4667 )(HL)(H 2 O)(DEF):Eu 3+ , 2.54%; 3+ , 10.68%; and Dy 3+ ,11.19%.
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