| Budget Amount *help |
¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2012: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
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| Outline of Final Research Achievements |
Block copolymers consisting of polyfluorene (PF) and polytriphenylamine (PTPA), modified with 2,1,3-benzothidiazole (BT) moieties, were synthesized. PFs with amine moieties at both chain ends were prepared via Suzuki-Miyaura cross-coupling and converted to PTPA-b-PF-b-PTPA triblock copolymers via C-N coupling reaction. Block copolymers containing BT at the junction points of PF and PTPA or in between PF or PTPA were synthesized similarly. In solutions, the emission similar to that of PF was predominantly observed, but in the films that consist to the BT moiety emerged intensively. EL devices using the block copolymer were fabricated. The block copolymer containing BT at the junction showed higher luminance and current efficiency than other block copolymers containing BT in between PF or PTPA. Since the energy transfer to the BT unit occurs in all block copolymers, this finding indicates that the recombination occurs efficiently in block copolymer containing BT at the junction.
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