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  1. B100 理学部/理学研究科
  2. B100a 雑誌掲載論文
  3. 学術雑誌

Fluorescence property of photosystem II protein complexes bound to a gold nanoparticle

http://hdl.handle.net/2237/26963
http://hdl.handle.net/2237/26963
c146e1a7-ab30-47f6-baa4-f03b6f3c9fde
名前 / ファイル ライセンス アクション
PSII_GNP.pdf PSII_GNP.pdf ファイル公開:2018/06/01 (535.1 kB)
Item type 学術雑誌論文 / Journal Article(1)
公開日 2017-09-06
タイトル
タイトル Fluorescence property of photosystem II protein complexes bound to a gold nanoparticle
言語 en
著者 Tahara, Kazuki

× Tahara, Kazuki

WEKO 73472

en Tahara, Kazuki

Search repository
Mohamed, Ahmed

× Mohamed, Ahmed

WEKO 73473

en Mohamed, Ahmed

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Kawahara, Kousuke

× Kawahara, Kousuke

WEKO 73474

en Kawahara, Kousuke

Search repository
Nagao, Ryo

× Nagao, Ryo

WEKO 73475

en Nagao, Ryo

Search repository
Kato, Yuki

× Kato, Yuki

WEKO 73476

en Kato, Yuki

Search repository
Fukumura, Hiroshi

× Fukumura, Hiroshi

WEKO 73477

en Fukumura, Hiroshi

Search repository
Shibata, Yutaka

× Shibata, Yutaka

WEKO 73478

en Shibata, Yutaka

Search repository
Noguchi, Takumi

× Noguchi, Takumi

WEKO 73479

en Noguchi, Takumi

Search repository
アクセス権
アクセス権 open access
アクセス権URI http://purl.org/coar/access_right/c_abf2
抄録
内容記述 Development of an efficient photo-anode system for water oxidation is key to the success of artificial photosynthesis. We previously assembled photosystem II (PSII) proteins, which are an efficient natural photocatalyst for water oxidation, on a gold nanoparticle (GNP) to prepare a PSII–GNP conjugate as an anode system in a light-driven water-splitting nano-device (Noji et al., J. Phys. Chem. Lett., 2011, 2, 2448–2452). In the current study, we characterized the fluorescence property of the PSII–GNP conjugate by static and time-resolved fluorescence measurements, and compared with that of free PSII proteins. It was shown that in a static fluorescence spectrum measured at 77 K, the amplitude of a major peak at 683 nm was significantly reduced and a red shoulder at 693 nm disappeared in PSII–GNP. Time-resolved fluorescence measurements showed that picosecond components at 683 nm decayed faster by factors of 1.4–2.1 in PSII–GNP than in free PSII, explaining the observed quenching of the major fluorescence peak. In addition, a nanosecond-decay component arising from a ‘red chlorophyll’ at 693 nm was lost in time-resolved fluorescence of PSII–GNP, probably due to a structural perturbation of this chlorophyll by interaction with GNP. Consistently with these fluorescence properties, degradation of PSII during strong-light illumination was two times slower in PSII–GNP than in free PSII. The enhanced durability of PSII is an advantageous property of the PSII–GNP conjugate in the development of an artificial photosynthesis device.
言語 en
内容記述タイプ Abstract
出版者
言語 en
出版者 Royal Society of Chemistry
言語
言語 eng
資源タイプ
資源タイプresource http://purl.org/coar/resource_type/c_6501
タイプ journal article
出版タイプ
出版タイプ AM
出版タイプResource http://purl.org/coar/version/c_ab4af688f83e57aa
DOI
関連タイプ isVersionOf
識別子タイプ DOI
関連識別子 https://doi.org/10.1039/C6FD00188B
ISSN
収録物識別子タイプ PISSN
収録物識別子 1359-6640
書誌情報 en : Faraday Discussions

巻 198, p. 121-134, 発行日 2017-06-01
著者版フラグ
値 author
URI
識別子 http://doi.org/10.1039/C6FD00188B
識別子タイプ DOI
URI
識別子 http://hdl.handle.net/2237/26963
識別子タイプ HDL
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