| Budget Amount *help |
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2015: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2014: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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| Outline of Final Research Achievements |
An optically active p-conjugated polymer (poly-1) consisting of alternating thieno[3,4-b]thiophene and glucose-linked biphenyl units was synthesized. We found that poly-1 undergoes a conformational transition between random-coil and helix in both solution and the solid state in response to the external solvent environment. Coated-type chiral stationary phases (CSPs) were prepared from both the random-coil and helical poly-1, and the influence of the polymer backbone structure on chiral recognition ability was evaluated. The two CSPs showed complementary resolution abilities. In addition, an immobilized-type CSP with universal solvent durability was also prepared using an alkyne-appended poly-1 analogue and an azide-functionalized silica gel. The resulting CSP displayed repeatable switching of the chiral recognition ability based on a coil-to-helix transition of the polymer backbone by alternate column treatment with common organic solvents, such as chloroform and acetonitrile.
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