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Moisture-reactive composition and organic electroluminescent device

A technology of reactivity and composition, which is applied in the field of moisture-reactive composition and vinylpyrrolidine, which can solve the problems of luminous brightness, luminous efficiency, luminous uniformity, luminous characteristic deterioration, dust adhesion, and lack of flexibility of water-absorbing films.

Inactive Publication Date: 2012-07-04
3M INNOVATIVE PROPERTIES CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] On the other hand, organic EL devices have the following problems: when the organic EL device is driven for a period of time, luminous characteristics such as luminous luminance, luminous efficiency, and luminous uniformity are seriously deteriorated compared with those in the initial stage.
However, since water-accepting films are formed from low-molecular-weight compounds, they lack sufficient flexibility when applied to flexible substrates.
After absorbing moisture, the compound becomes more brittle and may adhere to organic EL devices as dust

Method used

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  • Moisture-reactive composition and organic electroluminescent device
  • Moisture-reactive composition and organic electroluminescent device
  • Moisture-reactive composition and organic electroluminescent device

Examples

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example

[0040] Material

[0041] The acrylic resins shown in Table 1 were obtained by conventional methods using 2-ethylhexyl acrylate (2-EHA; manufactured by Nippon Shokubai Co., Ltd.) and acrylic acid (AA; manufactured by WakoPure Chemical Industries, Ltd. ) to synthesize.

[0042] Table 1

[0043]

polymer

Content (weight%)

in toluene

Solid content%

mw

Polymer 1

2-EHA / AA=99.9 / 0.01

40

100,000

Polymer 2

2-EHA / AA=99.9 / 0.01

40

200,000

Polymer 3

2-EHA=100

40

100,000

[0044] The following materials are commercially available and can be purchased and used directly:

[0045] Polymer 4: Shin-Etsu Silicones Co., Ltd., X-22-162C, COOH group-terminated block siloxane;

[0046] Polymer 5: Shin-Etsu Silicones Co., Ltd., X-22-3701E, block siloxane containing COOH group side chain;

[0047] Polymer 6: Sigma Aldrich Co., Ltd. Co., COOH-terminated block polyoxy...

example 1

[0055] All reagents and solvents are commercial products and can be purchased and used directly. In a 20 mL nitrogen-substituted spiral tube, a hexane solution (solid content: 25% by weight) of 4.0 g of trioctylaluminum (produced by Sigma Aldrich Co.) was added, and then 10.0 g of a toluene solution of Polymer 1 (solid content: 40% by weight), followed by vigorous stirring to obtain a solution composition.

[0056] Examples 2 to 7

[0057] Using the materials shown in Table 2, a solution composition was prepared in the same manner as in Example 1.

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Abstract

There is provided a moisture-reactive composition comprising a moisture-reactive organometallic compound, and a polymer having a carboxyl group at the end of a main chain or a side chain. A moisture-absorbing film formed of the moisture-reactive composition is also provided. An organic electroluminescent device comprising the moisture-reactive composition is also provided wherein a laminate is formed by interposing an organic luminescent material layer made of an organic material between a pair of electrodes facing each other, and a structure shields the laminate from the outside air, and drying means are arranged in the structure, wherein the drying means is formed of the moisture-reactive composition.

Description

Background technique [0001] The present invention relates to a moisture-reactive composition capable of forming a transparent flexible water-absorbing layer, and an organic electroluminescent (hereinafter abbreviated as EL) device including a drying device formed of the composition. [0002] An organic EL device utilizing an organic material has received special attention as a light-emitting device capable of emitting high-brightness light by low-voltage DC driving, the light-emitting device includes an anode, a cathode, and an organic layer formed between the anode and the cathode, the The organic layer includes an organic charge transport layer and an organic light emitting layer stacked on each other. In addition, all materials of organic EL devices can be composed of solid substances, and therefore, such devices are expected to be used as flexible displays. [0003] On the other hand, organic EL devices have the following problems: when the organic EL device is driven for...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K3/08C08L69/00C08L83/00C08L23/06
CPCC08K5/0091C08L33/08C08K5/098H01L51/5237C08K5/56C08L9/00Y10S428/917H10K50/846C08K3/08C08L23/06C08L69/00H01L21/00
Inventor 藤田淳山崎崇
Owner 3M INNOVATIVE PROPERTIES CO
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