A kind of rare earth europium complex and preparation method of europium red light transparent film based on pvb matrix

A technology of europium complexes and transparent films, which is applied in the field of synthesis of new europium complexes, can solve the problems of poor film transparency and insufficient luminescent film strength, and achieve the effects of improved coordination ability, excellent luminous efficiency, and high color purity

CN104059093BInactive Publication Date: 2016-03-23CHONGQING UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2016-03-23
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a rare earth europium complex and a preparation method for europium red light transparent film based on a PVB matrix. A preparation method of the rare earth europium complex Eu(TTA)2Tpy-OCH3 comprises the following steps that Eu(TTA)2.4H2O and Tpy-OCH3 serve as initial raw materials, the molar ratio of the Eu(TTA)2.4H2O to the Tpy-OCH3 is 2:1, tetrahydrofuran serves as solvent, and a reaction is carried out for three hours at 75 DEG C under the backflow condition to obtain the europium complex. The synthesized europium complex and the polyvinyl butyral (PVB) matrix are dissolved with good solvent, and the europium red light film is obtained after the solvent naturally volatilizes completely. According to the rare earth europium complex and the preparation method for the europium red light transparent film based on the PVB matrix, the PVB is creatively selected as the matrix, the prepared novel efficient red light transparent film material has the advantages of the europium complex of being high in color purity and high in luminous efficiency, and the advantage of the PVB matrix of being high in mechanical strength, and the luminous material can be applied to electronic terminals such as computers, television sets and mobile phones, and mainly serves as the luminous material in the field of panel display.
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Description

technical field

[0001] The invention relates to the synthesis of a novel europium complex and a preparation method of a rare earth europium polymer luminescent film material. Background technique

[0002] As an emerging flat-panel display technology, OLED has the characteristics of all solid state, self-illumination, wide viewing angle, fast response, low power consumption and soft screen, and is considered to be the next generation of dreamy display technology. At present, organic light-emitting display devices are not only widely used in fields such as mobile phone tablets, automotive instruments, and digital cameras, but also at the CES2012 exhibition in 2012, Samsung and LG successively demonstrated epoch-making 55-inch OLED TVs. Panasonic and Apple will also plan to launch large-size OLED TVs. However, red light materials for OLEDs have shortcomings such as low color purity, insufficient thermal stability, and poor film-forming performance, which limit the promotion of...

Examples

Embodiment 1

[0040] Accurately weigh 0.0495gPVB, 0.0005gEu(TTA) 2 Tpy-OCH 3 , Dissolve Eu(TTA) with an appropriate amount of DMF (N-N-dimethylformamide) 2 Tpy-OCH 3 , Pour the dissolved solution into a beaker, then add 20ml of absolute ethanol and 30ml of THF to make a 1g / L solution. Drop an appropriate amount of the solution into a watch glass with a dropper, and let the solvent evaporate naturally at room temperature.

[0041] Use PVB as a substrate to prepare a film. If the solvent volatilizes faster, the prepared film will turn white, and PVB is not easy to form a film, and it takes a long time to form a film. Therefore, choose to volatilize at room temperature for 36 hours to prepare the complex Eu(TTA) 2 Tpy-OCH 3 The mass is 1% PVB red light film.

[0042] attached figure 1 , the typical asymmetry of the carbonyl group in TTA appears at 1600cm -1 , the absorption peaks at 580 and 460 cm-1 are assigned to the stretching vibration peaks of the europium complexes N→Eu and O→Eu,...

Embodiment 2

[0047] Accurately weigh 0.2425gPVB, 0.0075gEu(TTA) 2 Tpy-OCH 3 , Dissolve Eu(TTA) with an appropriate amount of DMF (N-N-dimethylformamide) 2 Tpy-OCH 3 , Pour the dissolved solution into a beaker, then add 20ml of absolute ethanol and 30ml of THF to make a 5g / L solution. Drop an appropriate amount of the solution into a watch glass with a dropper, and let the solvent evaporate naturally at room temperature to prepare the complex Eu(TTA) 2 Tpy-OCH 3 The mass is 5% PVB red light film.

Embodiment 3

[0049] Accurately weigh 0.465gPVB, 0.035gEu(TTA) 2 Tpy-OCH 3 , Dissolve Eu(TTA) with an appropriate amount of DMF (N-N-dimethylformamide) 2 Tpy-OCH 3 , Pour the dissolved solution into a beaker, then add 20ml of absolute ethanol and 30ml of THF to make a 10g / L solution. Drop an appropriate amount of the solution into a watch glass with a dropper, and let the solvent evaporate naturally at room temperature to prepare the complex Eu(TTA) 2 Tpy-OCH 3 PVB red light film with a mass of 7%.

[0050] It can be clearly seen from the fluorescence test spectrum of the film that the characteristic emission peak of europium ions after doping is still at 617nm. And it can be seen that the luminous intensity of simple europium complexes is not high when dispersed in PVB film, and within the scope of experimental research, it increases with the increase of the content of europium complexes, and does not appear to increase with the increase of the content of europium complexes. Concentr...