Vacuum sublimation purification method and device of organic material

A technology of organic materials and purification methods, which is applied in the field of vacuum sublimation purification and devices for organic materials, can solve the problems of poor purification methods, impractical purification of organic matter, and low sublimation point of organic matter, and achieves simple structure, easy operation, and improved The effect of purity

Inactive Publication Date: 2008-11-26
SHANGHAI UNIV
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Problems solved by technology

[0004] But now this device is not practical for the purification of organic matter, because the sublimation point of organic matter is not high, and the effect of one-time purification method is not good, so we designed a two-step purification sublimation purification method

Method used

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  • Vacuum sublimation purification method and device of organic material

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Embodiment 1

[0018] Referring to Figure 1, the vacuum sublimation purification device mainly includes a glass container with a deposition chamber, a resistance furnace, a vacuum pumping system, and a heating temperature control system.

[0019] Taking copper phthalocyanine as an example, the specific purification process is as follows:

[0020] The first sublimation: Place copper phthalocyanine, an organic material with low purity (about 93%) bought from the market, in the first section of the glass tube, move the temperature zone of the heating furnace to the area of ​​the first section of the glass tube, and connect to the vacuum system. Vacuum down to 4×10 -3 After Pa, start heating, control the temperature at 230°C, sublimation starts, its material condenses in the second glass tube, its color is purple, and some impurities remain in the first glass tube. After about 30 minutes, the rest of the material turned dark purple, and the heating and vacuuming were stopped, and the first subl...

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Abstract

The invention relates to a vacuum sublimation and purification method and a device, pertaining to the technical field of physical vapor deposition. The purification process adopts the two-step vacuum sublimation process, the temperature of the first sublimation is controlled at 30 to 40 DEG C below the sublimation point of organic material, the second low-temperature vacuum sublimation is adopted for further removal of impurities; and the temperature of the second sublimation is controlled at 80 to 100 DEG C below the sublimation point of the organic material. The device of the invention mainly comprises a glass container with a deposition cavity, a heating furnace, a vacuum pumping system and a temperature control system; the structure is simple, the operation is easy and the device can be used repeatedly, thus being applicable to the purification of the organic material.

Description

technical field [0001] The invention relates to a vacuum sublimation purification method and device for organic materials, which are suitable for improving the purity of organic materials and belong to the technical field of physical vapor deposition. Background technique [0002] In recent years, organic materials have attracted more and more attention due to their many advantages and great potential commercial applications. Its main advantages are: (1) Large chemical variability and wide source of raw materials; (2) There are many ways to change and improve the spectral absorption capacity of materials, expand the spectral absorption range, and improve the transport capacity of carriers; (3) It is easy to process, and can form a large area of ​​film. It can be formed by rotating method and casting method. It can also be stretched and oriented to make the polar molecules arranged regularly. The thickness of the film can be controlled in the direction of molecular growth by ...

Claims

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Application Information

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IPC IPC(8): B01D7/00
Inventor 史伟民王林军张瑜郑耀明郭余英
Owner SHANGHAI UNIV
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