Equipment and process for vacuum sublimation purification of small organic molecule material

Abstract

The invention provides equipment for vacuum sublimation purification of a small organic molecule material. The equipment comprises a quartz sublimation pipe, a vacuumizing device for vacuumizing the quartz sublimation pipe, a film thickness detector and a heating device, wherein the film thickness detector is capable of detecting the diffusion rate of the small organic molecule material after sublimation in the quart sublimation pipe and comprises a probe capable of contacting small organic molecules, and a signal processor which is connected with the probe and used for sending out a diffusion rate signal; and the heating device is used for heating each temperature zone of the quartz sublimation pipe and adjusting according to the diffusion rate. The equipment provided by the invention realizes effective control on the vacuum sublimation purification process of the small organic molecule material, and further realizes reduction of pollution and waste while improving the purification speed and the purity and quality of the material. The invention also provides a process for the vacuum sublimation purification of the small organic molecule material, which is implemented by the equipment for the vacuum sublimation purification of the small organic molecule material provided by the invention.

Description

technical field [0001] The present invention relates to the technical field of manufacturing high-purity organic photoelectric materials, more specifically, to a device for vacuum sublimation and purification of organic small molecule materials, and also relates to a process for vacuum sublimation and purification of organic small molecule materials. Background technique [0002] In order to meet the demand for materials in the field of organic optoelectronic devices, my country's organic optoelectronic material industry needs to produce high-quality, high-purity organic optoelectronic materials in order to obtain high-performance organic optoelectronic devices. [0003] In the prior art, vacuum sublimation technology is often used to purify organic small molecule materials. The currently used vacuum sublimation purification equipment adopts the design scheme of three-stage temperature control or five-stage temperature control, through the combination of mechanical pump and ...

AI Technical Summary

Problems solved by technology

However, in the specific operation, it often depends on the experience and feeling of the technicians to adjust the heating device, lacks effective monitoring of the purification process, cannot realize effective control of the vacuum sublimation purification process of organic small molecule materials, and is not easy to control the organic small molecule. Diffusion rate; so that when the diffusion rate is small, the purification speed is affected, thereby affecting production efficiency; when the diffusion rate is high, small organic molecules will diffuse into the vacuum pump, causing serious pollution to the vacuum pump and waste of materials

At the same time, due to the inability to effectively control the vacuum sublimation purification process of organic small molecule materials, the purity and quality of the materials are poor

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