Sublimation purification｜Fukui Canon Materials

Sublimation purification is a method that utilizes the difference in temperature between the sublimation and deposition of a substance to purify it. For materials that use vacuum deposition, such as OLED materials, sublimation purification is generally used to remove metallic impurities and residual solvent that can degrade vacuum quality. In cases where the substance to be purified is not very soluble in organic solvents and cannot be purified by column or recrystallization methods, sublimation purification is used to remove impurities and solvent, increase purity, separate components, and reduce metal components.

Fukui Canon Materials' Sublimation Purification Technology

The substance to be purified is analyzed prior to sublimation to determine the optimum conditions for sublimation. Purification under these conditions enables us to obtain the target compound in high yield and high purity. We can also perform post-purification analysis using techniques in-house such as LC, LC-MS, GC, GC-MS, TG, and ICP-MS.

Sublimation Purification Diagram

Sublimation Purification Track Record

We have a proven track record in removing impurities and increasing purity of high-precision materials such as organic semiconductors and OLED materials.

Purification is available for a variety of applications, including:
Removal of residual solvents

Purification of materials with low solubility in organic solvents

Examples of Processing Capacity

500g/ lot	3 kg/month
1,000g/ lot	6 kg/month

Examples of Substances Processed

OLED materials

Recovery of post-deposition waste

Solar cells materials

Sublimation Purification Equipment

We have sublimation equipment of various capacities, enabling us to handle volumes ranging from small quantities up to 100 kg per year, depending on requirements.
We can also purify a diverse range of substances, whether solid or liquid at high temperatures.

Processing Capacity	Sublimation purification volume	1 g to 1 kg/batch
	Feed chamber volume	Up to 6.6ℓ
	Heating temperature	＜450℃

Number of units (simultaneous operation possible)	Volume 0.02ℓ ×1
	Volume 2.24ℓ ×2
	Volume 4.56ℓ ×1

Vacuum equipment	High-vacuum pump	Cryopump
	Ultimate pressure	1×10-⁴ Pa

Case Example Using Sublimation Purification

We can perform not only purity analysis using HPLC and GC, but also quality control with our in-house facilities, including halogen content analysis by combustion IC, and metal content analysis by ICP–MS.