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Novel organic electroluminescent material and organic light emitting diode device using electroluminescent material

An electroluminescent material and light-emitting diode technology, applied in the field of OLED devices, can solve problems such as reduced luminous efficiency, and achieve the effects of promoting energy transfer, improving green light emission efficiency and service life

Active Publication Date: 2016-12-14
BEIJING TUOCAI OPTOELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, using the blue dopant FCNIr with a triplet energy level of 2.8eV, the highest energy level -5.8eV and the lowest energy level -3.0eV, the energy level reverse transition from the dopant to the host will occur, which will reduce the luminous efficiency.
In particular, the decrease in luminous efficiency occurs more significantly at low temperature

Method used

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  • Novel organic electroluminescent material and organic light emitting diode device using electroluminescent material
  • Novel organic electroluminescent material and organic light emitting diode device using electroluminescent material
  • Novel organic electroluminescent material and organic light emitting diode device using electroluminescent material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Embodiment 1, the preparation of the first main body

[0038]

[0039] Synthesis of intermediate C:

[0040] Add 0.1mol A, 0.2mol B, 0.2mol sodium tert-butoxide, and 0.002mol palladium acetate into a 2L four-necked flask, 1L toluene into a 2L four-necked flask, stir, fill with nitrogen for 30 minutes, add 1ML tri-tert-butylphosphine, and heat Reflux for 4 hours, cool and filter to obtain the mother liquor. The mother liquor was concentrated to give a pale yellow solid. Mass Spectrum (ESI, 245.3)

[0041] Synthesis of Intermediate D (CAS: 1800071-10-6, CN104725373 Phosphorescent compound, preparation method and organic light emitting diode device):

[0042] Dissolve 0.1mol C in 300ML DMF, dissolve completely at 50°C, add 0.1mol NBS dropwise, and gradually precipitate off-white solid with the dropwise addition. The NBS was dropped, stirred overnight, cooled and filtered to obtain off-white solid D. See attached figure 1 .

[0043] Synthesis of compound 1:

[00...

Embodiment 2

[0045] Example 2: Preparation of the second body

[0046]

[0047] Synthesis of intermediate C:

[0048] Add 0.1mol A, 0.2mol B, 0.2mol sodium tert-butoxide, and 0.002mol palladium acetate into a 2L four-necked flask, 1L toluene into a 2L four-necked flask, stir, fill with nitrogen for 30 minutes, add 1ML tri-tert-butylphosphine, and heat Reflux for 4 hours, cool and filter to obtain the mother liquor. The mother liquor was concentrated to afford C as a pale yellow solid. Mass Spectrum (ESI, 245.3)

[0049]Synthesis of Intermediate D:

[0050] The synthesis of D can be synthesized by referring to the synthesis method of the literature Journal of Organic Chemistry, 76(9), 2976-2993; 2011, 9,9-diphenylacridine.

[0051] Synthesis of Intermediate F:

[0052] Dissolve 0.1mol C in 300ML DMF, dissolve completely at 50°C, add 0.1mol NBS dropwise, and gradually precipitate off-white solid with the dropwise addition. The NBS was dropped, stirred overnight, cooled and filtered ...

Embodiment 3

[0055] Embodiment 3, the third main body is synthesized

[0056]

[0057] Using 2,3-dibromopyridine as a raw material, compound G was obtained according to the synthetic route of the published patent CN102612518. Referring to the synthesis method of subject 1 and 2, subject 3 is obtained.

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Abstract

The invention relates to a novel organic electroluminescent material and an organic light emitting diode device using the electroluminescent material and belongs to the technical field of organic electron luminescence. A structural formula of the novel organic electroluminescent material is one of I, II and III, wherein Y expresses one of the following carbazoline groups, X expresses hydrogen, a substituted or unsubstituted aromatic group with carbon atom number of 6 to 30, a substituted or unsubstituted heterocyclic aromatic group with carbon atom number of 5 to 30, and a five-membered ring or six-membered ring formed by bonding the Y and the X; heteroatoms in a heterocyclic ring is N, S and O. Experiments show that the novel organic electroluminescent material disclosed by the invention is a phosphorescent compound with high triplet energy; by using the phosphorescent compound as a main body of a luminescent layer of the organic light emitting diode, energy transfer in the luminescent layer is promoted, green light emitting efficiency of an organic luminescent layer is improved, and service life of the organic luminescent layer is prolonged. (The formula is shown in the description.).

Description

technical field [0001] The present invention relates to a novel organic electroluminescent material and an organic light-emitting diode (OLED) device, and more particularly, to a novel organic electroluminescent material with improved luminous efficiency due to high triplet energy and wide energy bandgap. Luminescent material and an OLED device using the novel organic electroluminescent material. Background technique [0002] In recent years, extensive research and development has been conducted on organic electroluminescence devices. In the basic structure of such a light-emitting element, a layer containing a luminescent substance is interposed between a pair of electrodes, and by applying a voltage to the element, light emission from the luminescent substance can be obtained. [0003] Since such light-emitting elements are self-luminous elements, they have advantages over liquid crystal displays in terms of high pixel visibility and the elimination of the need for a back...

Claims

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Application Information

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IPC IPC(8): C07D519/00C09K11/06H01L51/50H01L51/54
CPCC09K11/06C07D519/00C09K2211/1092C09K2211/1029H10K85/657H10K85/6572H10K50/11
Inventor 赵洪玉
Owner BEIJING TUOCAI OPTOELECTRONICS TECH CO LTD
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