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Phosphorescent material, process for producing phosphorescent material, and phosphorescent element

A phosphorescent luminescent material and a manufacturing method technology, applied in luminescent materials, electrical components, chemical instruments and methods, etc., can solve the problems of inconsistent transition moments, lack of polarization, insufficient horizontal orientation, etc.

Inactive Publication Date: 2014-04-16
KYUSHU UNIV +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0021] However, the phosphorescent iridium complex material disclosed in Patent Document 1, and the phosphorescent organometallic complex materials disclosed in Patent Document 2 and Patent Document 3 all have the following problem: the horizontal orientation when they are film-formed Insufficient, the transition moment is inconsistent, therefore, the lack of polarization, it is still impossible to obtain high brightness organic EL elements

Method used

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  • Phosphorescent material, process for producing phosphorescent material, and phosphorescent element
  • Phosphorescent material, process for producing phosphorescent material, and phosphorescent element
  • Phosphorescent material, process for producing phosphorescent material, and phosphorescent element

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no. 1 Embodiment approach

[0098] The first embodiment of the present invention is a phosphorescent material characterized by having a linear conjugated structure, a 2-phenylpyridine ligand, a central metal, and a β-diketone represented by the general formula (1). type ligands.

[0099]

[0100] (In general formula (1), the terminal substituent R 1 and R 2Each independently, is a hydrogen atom, a substituted or unsubstituted alkyl group with 1 to 20 carbon atoms, a substituted or unsubstituted aryl group with 6 to 20 carbon atoms, a halogen atom, a substituted or unsubstituted boron group, or a substituted or unsubstituted Substituted amino groups; substituents a~l and o~s are independently hydrogen atoms, substituted or unsubstituted alkyl groups with 1 to 20 carbon atoms, substituted or unsubstituted aryl groups with 6 to 20 carbon atoms, or halogen atom; the central metal M is platinum (Pt), iridium (Ir), nickel (Ni), copper (Cu), or gold (Au); the repeating numbers m and n are independently int...

no. 2 Embodiment approach

[0197] The second embodiment of the present invention is a method for producing a phosphorescent light-emitting material, which is characterized in that it is the method for producing a phosphorescent light-emitting material according to the first embodiment, and includes the step of preparing a dinuclear coordination compound represented by the following general formula (11) , and a step of subjecting the binuclear coordination compound to acetylacetonation.

[0198]

[0199] (In general formula (11), multiple terminal substituents R 1 and R 2 Each independently, is a hydrogen atom, a substituted or unsubstituted alkyl group with 1 to 20 carbon atoms, a substituted or unsubstituted aryl group with 6 to 20 carbon atoms, a halogen atom, a substituted or unsubstituted boron group, or a substituted or unsubstituted Substituted amino groups; multiple substituents a~l and o~s are independently hydrogen atoms, substituted or unsubstituted alkyl groups with 1 to 20 carbon atoms, ...

no. 3 Embodiment approach

[0224] A third embodiment of the present invention is a light-emitting element characterized in that a light-emitting layer or a multilayer organic thin film layer containing a light-emitting layer is included between a pair of electrodes composed of an anode and a cathode; the light-emitting layer contains host material, and the phosphorescent material of the first embodiment as a dopant material.

[0225] Hereinafter, a light-emitting element (organic EL element, etc.) as a third embodiment of the present invention will be described in detail with appropriate reference to the drawings.

[0226] 1. Basic composition

[0227] The light-emitting element of the present invention, for example, a representative organic EL element 110, such as Figure 5 As shown in FIG. A hole blocking layer 105', an electron transport layer 106 made of a predetermined organic compound, and a cathode 107 made of a metal material are formed.

[0228] That is, the organic EL element 110 is configu...

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Abstract

Provided are: a phosphorescent material which exhibits excellent horizontal orientation properties and so on when formed into a thin film; a process for producing the phosphorescent material with high efficiency; and a light-emitting element produced using the phosphorescent material. A phosphorescent material represented by general formula (1), a process for producing the phosphorescent material, and a light-emitting element produced using the phosphorescent material, each of which is characterized in that the phosphorescent material has a linear conjugated structure, a 2-phenylpyridine ligand, a center metal and a beta-diketone type ligand in the molecule thereof. In general formula (1), R1 and R2, which are terminal substituents, independently represent a hydrogen atom, an alkyl group having 1 to 20 carbon atoms, or the like; a to l and o to s independently represent a hydrogen atom, or the like; M, which is the center metal, represents platinum or the like; m and n, which are the numbers of repeats, independently represent an integer of 0 to 4.

Description

technical field [0001] The present invention relates to a phosphorescent material, a method for producing the phosphorescent material, and a phosphorescent element. In particular, it relates to a phosphorescent material excellent in horizontal orientation during film formation, a method for producing the phosphorescent material, and a phosphorescent element. Background technique [0002] Conventionally, as an attempt to improve the luminous efficiency of an organic electroluminescence element (organic EL element), it has been proposed to use phosphorescence instead of fluorescence. [0003] That is, if the light-emitting layer of an organic EL element contains a predetermined amount of a phosphorescent light-emitting material relative to the host material of the main component, and the excited triplet state of the phosphorescent light-emitting material is mainly used, high luminous efficiency is expected to be achieved. The reason is considered to be that when electrons and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/06C07D213/16C07F15/00H01L51/50H10K99/00
CPCC09K2211/1007C09K2211/185H01L51/009C09K2211/1014H01L51/0087H01L51/5016H01L51/008C09K11/06C09K2211/1029C07F15/0086C07F5/02C07D213/16H01L51/0072H10K85/361H10K85/346H10K85/6572H10K50/11H10K2101/10H10K85/658H10K85/322
Inventor 种田将嗣安达千波矢安田琢麿中田学中田安一
Owner KYUSHU UNIV
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