Photosynthetic Electron Transfer from Reaction Center Pigment-Protein Complex in Silica Nanopores
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作者:
Oda, Ippei
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Nagoya Univ, Div Mat Sci Phys, Grad Sch Sci, Chikusa Ku, Aichi 4648602, JapanNagoya Univ, Div Mat Sci Phys, Grad Sch Sci, Chikusa Ku, Aichi 4648602, Japan
Oda, Ippei
[1
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Iwaki, Masayo
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UCL, Glynn Lab Bioenerget, Dept Biol, London WC1E 6BT, EnglandNagoya Univ, Div Mat Sci Phys, Grad Sch Sci, Chikusa Ku, Aichi 4648602, Japan
Iwaki, Masayo
[2
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Fujita, Daiju
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Nagoya Univ, Div Mat Sci Phys, Grad Sch Sci, Chikusa Ku, Aichi 4648602, JapanNagoya Univ, Div Mat Sci Phys, Grad Sch Sci, Chikusa Ku, Aichi 4648602, Japan
Fujita, Daiju
[1
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Tsutsui, Yasutaka
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Nagoya Univ, Div Mat Sci Phys, Grad Sch Sci, Chikusa Ku, Aichi 4648602, JapanNagoya Univ, Div Mat Sci Phys, Grad Sch Sci, Chikusa Ku, Aichi 4648602, Japan
Tsutsui, Yasutaka
[1
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Ishizaka, Souji
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Nagoya Univ, Div Mat Sci Phys, Grad Sch Sci, Chikusa Ku, Aichi 4648602, JapanNagoya Univ, Div Mat Sci Phys, Grad Sch Sci, Chikusa Ku, Aichi 4648602, Japan
Ishizaka, Souji
[1
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Dewa, Makiko
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Nagoya Inst Technol, Dept Appl Chem, Grad Sch Engn, Nagoya, Aichi 4668555, JapanNagoya Univ, Div Mat Sci Phys, Grad Sch Sci, Chikusa Ku, Aichi 4648602, Japan
Dewa, Makiko
[3
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Nango, Mamoru
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Nagoya Inst Technol, Dept Appl Chem, Grad Sch Engn, Nagoya, Aichi 4668555, JapanNagoya Univ, Div Mat Sci Phys, Grad Sch Sci, Chikusa Ku, Aichi 4648602, Japan
Nango, Mamoru
[3
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Kajino, Tsutomu
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Toyota Cent Res & Dev Labs Inc, Aichi 4801192, JapanNagoya Univ, Div Mat Sci Phys, Grad Sch Sci, Chikusa Ku, Aichi 4648602, Japan
Kajino, Tsutomu
[4
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Fukushima, Yoshiaki
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Toyota Cent Res & Dev Labs Inc, Aichi 4801192, JapanNagoya Univ, Div Mat Sci Phys, Grad Sch Sci, Chikusa Ku, Aichi 4648602, Japan
Fukushima, Yoshiaki
[4
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Itoh, Shigeru
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Nagoya Univ, Div Mat Sci Phys, Grad Sch Sci, Chikusa Ku, Aichi 4648602, JapanNagoya Univ, Div Mat Sci Phys, Grad Sch Sci, Chikusa Ku, Aichi 4648602, Japan
Itoh, Shigeru
[1
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机构:
[1] Nagoya Univ, Div Mat Sci Phys, Grad Sch Sci, Chikusa Ku, Aichi 4648602, Japan
[2] UCL, Glynn Lab Bioenerget, Dept Biol, London WC1E 6BT, England
[3] Nagoya Inst Technol, Dept Appl Chem, Grad Sch Engn, Nagoya, Aichi 4668555, Japan
[4] Toyota Cent Res & Dev Labs Inc, Aichi 4801192, Japan
A photosynthetic reaction center (RC) pigment-protein complex purified from a thermophilic purple photosynthetic bacterium, Thermochromatium tepidum, was adsorbed to a folded-sheet silica mesoporous material (FSM). The RC has a molecular structure with a 7.0 x 5.0 x 13 nm diameter. The amount of RC adsorbed to the FSM compound with an average internal pore diameter of 7.9 nm (FSM7.9) was high at 0.29 gRC/gFSM, while that to the FSM2.7 (2.7 nm diameter) was low at 0.02 gRC/gFSM, suggesting the specific binding of the RC into the 7.9 nm pores of FSM7.9. An N-2-adsorption isotherm study indicated the incorporation of the RC into the 7.9 nm pores. The RC inside FSM79. showed absorption spectra in the visible and infrared regions similar to those of the RC in solution, indicating almost no structural changes induced by the adsorption. The RC-FSM7.9 conjugate showed the high photochemical activity with the increased thermal stability up to 50 degrees C in the measurements by laser spectroscopy. The conjugates rapidly provided electrons to a dye in the outer medium or showed electric current on the ITO electrode upon the illumination. The RC-FSM conjugate will be useful for the construction of artificial photosynthetic systems and new photodevices.
机构:
Gettysburg Coll, Dept Phys, 300 North Washington St, Gettysburg, PA 17325 USAGettysburg Coll, Dept Phys, 300 North Washington St, Gettysburg, PA 17325 USA
Sato, Yoshihiro
Sicotte, Danielle
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Gettysburg Coll, Dept Phys, 300 North Washington St, Gettysburg, PA 17325 USAGettysburg Coll, Dept Phys, 300 North Washington St, Gettysburg, PA 17325 USA
机构:
Tel Aviv Univ, Dept Biochem, IL-69978 Tel Aviv, IsraelTel Aviv Univ, Sch Chem, IL-69978 Tel Aviv, Israel
Sepunaru, Lior
Tsimberov, Irena
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Tel Aviv Univ, Sch Elect Engn, IL-69978 Tel Aviv, IsraelTel Aviv Univ, Sch Chem, IL-69978 Tel Aviv, Israel
Tsimberov, Irena
Forolov, Ludmila
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Tel Aviv Univ, Dept Biochem, IL-69978 Tel Aviv, IsraelTel Aviv Univ, Sch Chem, IL-69978 Tel Aviv, Israel
Forolov, Ludmila
Carmeli, Chanoch
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Tel Aviv Univ, Dept Biochem, IL-69978 Tel Aviv, IsraelTel Aviv Univ, Sch Chem, IL-69978 Tel Aviv, Israel
Carmeli, Chanoch
Carmeli, Itai
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Tel Aviv Univ, Sch Chem, IL-69978 Tel Aviv, Israel
Tel Aviv Univ, Inst NanoSci & Nanotechnol, IL-69978 Tel Aviv, IsraelTel Aviv Univ, Sch Chem, IL-69978 Tel Aviv, Israel
Carmeli, Itai
Rosenwaks, Yossi
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Tel Aviv Univ, Sch Elect Engn, IL-69978 Tel Aviv, IsraelTel Aviv Univ, Sch Chem, IL-69978 Tel Aviv, Israel