| Project/Area Number |
22550160
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Chemistry related to living body
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| Research Institution | Kwansei Gakuin University |
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Principal Investigator |
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| Project Period (FY) |
2010 – 2012
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| Project Status |
Completed (Fiscal Year 2012)
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| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2012: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2011: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2010: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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| Keywords | 海洋光合成初期過程 / カロテノイド / 超エネルギー伝達効率の解明 / ペリジニン / フコキサンチン / シリーズでの類縁体合成 / 超高速時間分解スペクトル / カロテノイド・ペリジニン / カロテノイド・フコキサンチン / 新規ペリジニン類縁体 / ワンポット共役イリデンブテノリド合成 / 新規フコキサンチン類縁体 / 新規エネルギー準位・SICT / 海洋光合成 / ピペリジン / 構造的特徴と機能 / 効率的全合成 / 立体化学制御 |
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| Research Abstract |
Peridinin and fucoxanthin are known as representative auxiliary light harvesting pigments for photosynthesis in the sea. In the super complexes constructed with these carotenoids, chlorophyll and protein, respectively, exceptionally high (>85%) energy transfer efficiencies from the carotenoids to chlorophyll have been reported. This high efficiency is thought to be related to the unique structure of the carotenoids, which possesse allene and carbonyl functions. There are, however, no studies on the relation between the structural features of these carotenoids and their super ability of the energy transfer. We then focused on the subjects of how these functions play a role in the exceptionally highly energy transfer. We have achieved the efficient syntheses of these natural carotenoids and their modified derivatives on allene and conjugated polyene. Measurements of their ultrafast time resolved spectra and Stark spectra have strongly suggested that the structural feature of the both carotenoids has essentially contributed to their super ability of the energy transfer.
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