| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2013: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2012: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2011: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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| Outline of Final Research Achievements |
Photosynthetic proteins were incorporated into silicananopores, which were made inside three types of mesoscopic silica materials with shapes of powder (μm size particles), glass plates and thin alumina-plates. As the protein materials, photosystem I and II reaction center complexes (PSI-, PSII-RCs) with molecular diameters of 21 nm containing 50-100 pigments were used. They were incorporated into silica nanopores with a 25-100 nm diameter made inside micrometer-size particles (FSM, SBA) or inside the large 300 nm pores that penetrates an alumina plate of 60-μm thickness. PSI-RC was stable inside the nanopores and rapidly photoreduced methyl viologen. The reduced dye was stablized inside nanopores and produced H2 by hydrogenase. PSII-RC in nanopores efficiently produced molecular oxygen from water by light enegry. The hybrids of protein-silica mesoscopic materials provide new platforms for the photoreactions and artificial photosynthesis.
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