A Class of Phosphorescent Luminescent Materials of Tetradental Cyclometal Platinum(ii) Complexes

A phosphorescence luminescent material, metal platinum technology, applied in the direction of luminescent materials, platinum-based organic compounds, platinum-group organic compounds, etc., can solve the problem of high purity of luminous color, achieve high phosphorescent quantum efficiency, easy modification and adjustment, and definite molecular weight Effect
CN107266505BActive Publication Date: 2021-11-23ZHEJIANG UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ZHEJIANG UNIV OF TECH
Publication Date
2021-11-23

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Abstract

The present invention discloses a class of four-dentate ring metal platinum (II) phosphorescent luminescent material as shown in formula (I): wherein, the five-membered heteroaromatic group Ar is selected from one of the following: 2H-1, 2,3‑triazole where X 1 =N,X 2 =N,X 3 =CH); 1H-1,2,3-triazole wherein, X 1 =CH,X 2 =N,X 3 = N; 1,3,4-oxadiazole wherein, X 1 =O,X 2 =C,X 3 = N; oxazole wherein, X 1 =O,X 2 =C,X 3 =CH or thiazole wherein, X 1 =S,X 2 =C,X 3 =CH. The application of one or two or more of the four-ring metal platinum (II) phosphorescent luminescent materials in the present invention as a light-emitting layer of an organic light-emitting device. The four-ring metal platinum (II) phosphorescent luminescent material of the present invention has strong molecular rigidity, can effectively reduce the energy consumed by molecular vibration, has high phosphorescent quantum efficiency, and has good chemical stability and thermal stability.
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Description

technical field

[0001] The invention relates to the field of phosphorescent luminescent materials, in particular to a class of tetradentate ring metal platinum (II) complex phosphorescent materials containing five-membered heteroaromatic rings. Background technique

[0002] OLED is an Organic Light-Emitting Diode (Organic Light-Emitting Diode) or an Organic Light-Emitting Device (Organic Light-Emitting Device), also known as an Organic Electroluminescent Device. Organic electroluminescence refers to a luminescent phenomenon in which small organic molecules, metal-organic complex molecules or polymer molecular luminescent materials directly convert electrical energy into light energy under the action of a forward bias electric field. Generally, OLED devices have at least one organic layer between the anode and cathode. Under the action of the forward bias voltage derived from the current, the anode and cathode inject holes and electrons into the organic layer, respectively, ...

Claims

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