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Method for preparing highly effective green light rare earth compound film

A technology of rare earth compounds and compounds, applied in the direction of chemical instruments and methods, luminescent materials, etc., can solve the problems that the common film forming technology has not been proposed, lack of mature preparation methods, and restrict the assembly of functional systems and related performance research, so as to improve the luminous intensity And the effect of luminescence stability, improvement of fluorescence stability, and good fluorescence stability

Inactive Publication Date: 2007-12-05
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the traditional LB membrane technology requires the molecules in the membrane to be amphiphilic molecular systems containing hydrophobic long alkane chains, and many functional molecular systems do not have this characteristic, this method restricts the assembly and integration of functional systems by LB membrane technology to a certain extent. Correlation Performance Research
In the application field of green light-emitting rare earth compound ultra-thin film materials, there is still a lack of mature preparation methods for rare earth terbium (III) compound LB films that do not contain hydrophobic hydrocarbon chains
In addition, how to improve the luminescence stability of the material is an important issue that must be considered in the application. At present, the common film forming technology has not yet proposed an effective solution.

Method used

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  • Method for preparing highly effective green light rare earth compound film
  • Method for preparing highly effective green light rare earth compound film
  • Method for preparing highly effective green light rare earth compound film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Embodiment 1. The preparation of high-efficiency green light rare earth compound film, the steps are as follows:

[0040] (1) Preparation of rare earth terbium (III) compound Tb(acac) 3 Phen: first take 1.25mmol terbium oxide (Tb 4 o 7 ) brown powder, add 1M dilute hydrochloric acid at 60°C, then add H2 o 2 , rapid stirring to drive away a large number of bubbles, as the reaction continues, the speed of bubble generation slows down, the solution changes from a brown suspension to a colorless clear solution, continue to heat and stir until the system is nearly dry, and then add a small amount of triple distilled water to obtain TbCl 3 Solution (solution a), 15.0mmol acac was dissolved in 95% ethanol to obtain solution b, 5.0mmol Phen was dissolved in 95% ethanol to obtain solution c, 15.0mmol NaOH was dissolved in triple distilled water to obtain solution d; solution a, Add solution c and solution d dropwise to solution b, reflux under stirring for 1.5 hours to fully ...

Embodiment 2

[0045] Embodiment 2. The preparation of high-efficiency green light rare earth compound film, the steps are as follows:

[0046] (1) Preparation of rare earth terbium (III) compound Tb(acac) with reference to the first (1) step method of Example 1 3 Phen; The gas-liquid two-dimensional surface monolayer film Tb(acac) is prepared with reference to the first (2) step method of Example 1 3 Phen / AA(2 / 1); choose hydrophobic solid substrate, constant surface pressure 25mN m -1 , film lifting speed 10.0mm·min -1 , after preparing two layers of film, the residence time in the air is 360 seconds, and the ultra-thin film of rare earth terbium (III) compound is transferred and deposited on the gas-liquid two-dimensional surface;

[0047] (2) In the steady-state fluorescence spectrum of LB film, the excitation peaks are located at 230.0, 270.0, 300.0, 355.0, 430.0, 470.0nm, and the emission peaks are located at 488.5, 545.0, 582.5, 617.0, 644.0, 664.0, 674.0nm; the fluorescence emission...

Embodiment 3

[0048] Embodiment 3. The preparation of high-efficiency green light rare earth compound film, the steps are as follows:

[0049] (1) Preparation of rare earth terbium (III) compound Tb(acac) with reference to the first (1) step method of Example 1 3 Phen; The gas-liquid two-dimensional surface monolayer film Tb(acac) is prepared with reference to the first (2) step method of Example 1 3 Phen / AA(1 / 2); choose hydrophobic solid substrate, constant surface pressure 25mN m -1 , film lifting speed 15.0mm·min -1 , after preparing two layers of film, the residence time in the air is 360 seconds, and the ultra-thin film of rare earth terbium (III) compound is transferred and deposited on the gas-liquid two-dimensional surface;

[0050] (2) In the steady-state fluorescence spectrum of LB film, the excitation peaks are located at 230.0, 270.0, 300.0, 355.0, 430.0, 470.0nm, and the emission peaks are located at 488.5, 545.0, 582.5, 617.0, 644.0, 664.0, 674.0nm; the fluorescence emission...

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Abstract

The disclosed preparation method for a high-efficient green-light rare-earth compound film comprises: (1) preparing any one rare-earth terbium (III) compound of Tb(acac)3Phen, Tb(TFA)3Phen, Tb(HFA)3Phen and Tb(TTA)3Phen (acac, TFA, HFA, TTA, and Phen for acetylacetone, trifluoro acetylacetone, hexafluoro acetylacetone, thenoyl trifluoroacetone, and 1, 10-ortho-phenanthroline, respectively); (2) preparing functional aqueous phase, mixing the terbium (III) compound with one fatty acid for ultrathin film preparation on gas-liquid two-dimensional surface and the transfer toward hydrophobic solid substrate. This product has characteristic fluorescence-emission peak on 535.0-557.5nm, keeps layer periodic structure after 26 weeks to detect out the fluorescent signal, and shows important application.

Description

technical field [0001] The invention relates to a method for preparing a rare earth compound thin film luminescent material, in particular to a method for preparing an atypical amphiphilic terbium (III) compound thin film without hydrophobic hydrocarbon chains by using molecular level assembly technology. Background technique [0002] In terms of preparation of characteristic materials, the preparation of ultra-thin films of rare earth compounds by the assembly technology at the molecular level - Langmuir-Blodgett (LB) membrane technology has become a research hotspot and a key topic for scientific and technological workers at home and abroad in recent years. my country's research level in this field ranks among the top in the world and has produced a large number of innovative results. However, because the traditional LB membrane technology requires the molecules in the membrane to be amphiphilic molecular systems containing hydrophobic long alkane chains, and many function...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/77
Inventor 张人杰杨孔章
Owner SHANDONG UNIV
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