| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2014: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2013: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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| Outline of Final Research Achievements |
In the present study, we constructed a prototype system, being the hybrid of sublimation and solution re-crystallization as a new efficient purification process of organic semiconductor materials and verified its capability. In this prototype system, the vapor of pentacene, which was produced in a vacuum by heating the sublimation chamber under Ar gas flow, was introduced into the container filled with ionic liquid, followed by its successful nucleation and crystallization in ionic liquid. The process is expected to be more efficient for purification of organic materials such as pentacene by two synergetic effects of sublimation and re-crystallization, as was evidenced by the preliminary result of the efficient removal of pentacenequinone, which is one of the impurities that were often contained in pentacene, by this principle.
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