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Material for organic electroluminescence element, and organic electroluminescence element

An electroluminescent element and electroluminescent technology, which are applied in the fields of luminescent materials, organic chemistry, chemical instruments and methods, etc., and can solve problems such as difficult to say that it has sufficient performance.

Inactive Publication Date: 2009-05-13
TOYO INK SC HOLD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, it is difficult to say that these organic EL elements have sufficient performance in terms of performance such as efficiency, driving voltage, and lifetime.

Method used

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  • Material for organic electroluminescence element, and organic electroluminescence element
  • Material for organic electroluminescence element, and organic electroluminescence element
  • Material for organic electroluminescence element, and organic electroluminescence element

Examples

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Embodiment

[0087] Hereinafter, although an Example demonstrates this invention concretely, this invention is not limited to a following Example. In this example, unless otherwise specified, the mixing ratio means the entire weight ratio.

Synthetic example 1

[0088] Synthesis Example 1 (Synthesis of 2,5-bis(4-tert-butylphenyl)thiazolo[4,5-d]thiazole )

[0089] In a reaction vessel, rhomic acid (5.00 g), 4-tert-butylbenzaldehyde (23.62 g), and phenol (20.0 g) were charged, and heated to reflux for 5 hours under a nitrogen atmosphere. The reaction solution was cooled to room temperature, methanol (100 mL) was added, and the precipitated pale yellow precipitate was collected by filtration to obtain compound 16 (8.80 g, 52%). The obtained compound 16 1 H-NMR (AVANCE400 manufactured by Bruker BioSpin), MS spectrum (Polaris Q manufactured by Thermo Electric Corporation) are shown in Fig. 1 and figure 2 . Compound 16 was identified from the following analysis results.

[0090] 1 H-NMR (400MHz, CDCl 3 ) 7.92 (4H, d, J = 8.6Hz), 7.49 (4H, d, J = 8.6Hz), 1.37 (18H, s) (Fig. 1). m / z (EI + )406(M + )( figure 2 ).

Synthetic example 2

[0091] Synthesis Example 2 (Synthesis of 2,5-bis(4-bromophenyl)thiazolo[4,5-d]thiazole )

[0092] In a reaction vessel, red acid (5.00 g), p-bromobenzaldehyde (25.00 g), and phenol (20.0 g) were charged, and heated to reflux for 1 hour under a nitrogen atmosphere. The reaction solution was cooled to room temperature, ethyl acetate (100 mL) was added, and the precipitated tan precipitate was collected by filtration to obtain compound 20 (7.29 g, 39%). The MS spectrum (Polaris Q manufactured by Thermo Electric Corporation) of the obtained compound 20 is shown in image 3 . Compound 20 was identified from the following analysis results.

[0093] m / z (EI + )450, 452, 454 (M + )( image 3 ).

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Abstract

Disclosed is a material for an organic EL element which can provide an organic EL element having a high brightness, a high efficiency and a long operation life. Also disclosed is an organic EL element using the material. The material comprises a compound represented by the general formula (1): (1) wherein R<1> and R<2> independently represent a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heterocyclic group.

Description

technical field [0001] The present invention relates to a material for an organic electroluminescent element used in a planar light source or a display, and an organic electroluminescent element using the same. Background technique [0002] In an organic electroluminescence (hereinafter referred to as organic EL) element, electrons injected from the cathode and holes injected from the anode recombine in an organic phosphor sandwiched between the two electrodes to emit light. Organic EL elements are considered to have promising applications as solid-state light-emitting display elements, and research and development have been actively carried out in recent years. [0003] The research started with an EL element laminated with an organic thin film developed by C.W.Tang et al. of Eastman Kodak Company. According to the research report, by using a metal chelate complex in the light-emitting layer and an amine compound in the hole injection layer, the brightness of a DC voltage ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/06C07D513/04H01L51/50
Inventor 高田泰行
Owner TOYO INK SC HOLD CO LTD
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