Shenzhen China Star Optoelectronics Technology Co., Ltd.

Sun Yat-Senuniversity

Jiarui Xu

Yi Cheng Zhang

Zhenguo Chi

Yifan Wang

Qinghua Zou

Shidang Xu

Yuanchun Wu

Xianjie Li

Poyen Lu

Siwei Liu

Bingjia Xu

Runxin Bei

Haozhong Wu

Junru Chen

Chao Qian

Leyu Wang

The invention discloses a polymer with a low dielectric constant and a molecular structure design method capable of reducing the dielectric constant of the polymer. A straight-chain rigid group is introduced into a meta-position of a side group benzene ring or diphenyl chain segment structure by using the designability of a molecular chain side group of a polymer; and a free volume hole with a larger size is formed in the material through loose rotation of the side group benzene ring to inhibit molecular chain deposition, thereby reducing the dielectric constant of the polymer material. The design method is simple, is suitable for a common high-performance polymer material, can be applied to preparation of a low-dielectric polymer material, is suitable for the field of new and high technology industries such as electronics, microelectronics, information and aerospace and is especially suitable for the field of super-large-scale integrated circuits.

Polymer with low dielectric constant and molecular structure design method capable of reducing dielectric constant of polymer

An organic monomolecular white light material, a manufacturing method for the same, and an OLED element are provided. The organic monomolecular white light material has a room temperature phosphorescence emission property in a solid state, and can trap triplet exciton to achieve high efficient luminescence. Also, that has a higher thermal decomposition temperature and glass transition temperature, and the synthetic method and purification process thereof are simple. It has the advantages of mild reaction condition and high yield, and the thermal properties, luminescent properties, white-light color purity, etc of a final product can be adjusted by connecting to different aromatic fused ring or aromatic heterocyclic ring groups. In the OLED element, the organic monomolecular white light material is used as an emitting layer, and the emitting layer has a high luminous intensity and a good stability, thus the luminous efficiency and working life of the OLED element achieve practical requirements.

Organic monomolecular white light material, manufacturing method for the same, and OLED element

The present invention provides a thermally activated delayed fluorescence material, a method of synthesizing the same and an OLED device using the same. The thermally activated delayed fluorescence material includes a structure formula 1 as wherein the group Ar1 is identical to or different from the group Ar2, and the group Ar1 and the group Ar2 are consisted of carbazole and/or phenothiazine. The thermally activated delayed fluorescence material has a higher glass transition temperature, high thermal stability and excellent luminous efficiency. The method of synthesizing the same has simplified steps, easily purified product, high yield, and luminous and thermal properties of the product can be adjusted by connecting to differentiated functional groups. The OLED device using the same has a light emitting layer of high fluorescence efficiency and long-term stability, so that luminous efficiency and service life of the OLED device can meet practical demand.

Terminally activated delayed fluorescence material, a method of synthesizing the same and an OLED device using the same

The present invention provides a thermally activated delayed fluorescence material, a method of synthesizing the same and an OLED device using the same. The thermally activated delayed fluorescence material includes a structure formula 1 as Ar&#x2014;(Ar1)-(Ar2), wherein the number of m is in 1&#x2dc;4, the number of n is in 1&#x2dc;8, the group Ar is an electron withdrawing group, the group Ar1 is an electron donating group and the group Ar2 is an aggregation induced emission group. The thermally activated delayed fluorescence material has a higher glass transition temperature, high thermal stability and excellent luminous efficiency. The method of synthesizing the same has simplified steps, easily purified product, high yield, and luminous and thermal properties of the product can be adjusted by connecting to differentiated functional groups.

Thermally activated delayed fluorescence material, a method of synthesizing the same and an OLED device using the same

Growing community of inventors

Guangzhou, China

Jiarui Xu