Search Results - "Nagasawa, Yutaka"

Conversion of B800 Bacteriochlorophyll a to 3‑Acetyl Chlorophyll a in the Light-Harvesting Complex 3 by In Situ Oxidation by Saga, Yoshitaka, Hamanishi, Kohei, Yamamoto, Tetsuya, Hinago, Kazuki, Nagasawa, Yutaka

“…The spectral features of energy donors and acceptors and the relationship between them in photosynthetic light-harvesting proteins are crucial for…”
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Ultrafast Excited State Dynamics of Forward and Reverse trans-cis Photoisomerization of Red-Light-Absorbing Indigo Derivatives by Kihara, Yu, Tani, Shuntaro, Higashi, Yamato, Teramoto, Takahiro, Nagasawa, Yutaka

“…Femtosecond time-resolved transient absorption (TRTA) spectroscopy was carried out to investigate the ultrafast excited state dynamics of both trans → cis and…”
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Excitation Energy Transfer from Bacteriochlorophyll b in the B800 Site to B850 Bacteriochlorophyll a in Light-Harvesting Complex 2 by Saga, Yoshitaka, Yamashita, Madoka, Masaoka, Yuto, Hidaka, Tsubasa, Imanishi, Michie, Kimura, Yukihiro, Nagasawa, Yutaka

“…Control of the spectral overlap between energy donors and acceptors provides insight into excitation energy transfer (EET) mechanisms in photosynthetic…”
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Excited State dynamics of charge transfer complexes of fullerenes in an electron donating solvent by Takahashi, Yosuke, Sugihara, Keita, Nagasawa, Yutaka

“…[Display omitted] •Femtosecond transient absorption spectroscopy was performed on charge transfer complexes of C60 and C70, in N,N-dimethylaniline…”
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Ultrafast Dynamics of a Solvatochromic Dye, Phenol Blue: Tautomerization and Coherent Wavepacket Oscillations by Ota, Chikashi, Matsumoto, Akifumi, Hidaka, Tsubasa, Sugihara, Keita, Teramoto, Takahiro, Nagasawa, Yutaka

“…Femtosecond time-resolved transient absorption spectroscopy was performed for a nonfluorescent solvatochromic dye, phenol blue,…”
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Energy Transfer Dynamics in Light-Harvesting Complex 2 Variants Containing Oxidized B800 Bacteriochlorophyll a by Saga, Yoshitaka, Otsuka, Yuji, Tanaka, Aiko, Masaoka, Yuto, Hidaka, Tsubasa, Nagasawa, Yutaka

“…Excitation energy transfer (EET) in light-harvesting proteins is vital for photosynthetic activities. The pigment compositions and their organizations in these…”
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In situ formation of photoactive B-ring reduced chlorophyll isomer in photosynthetic protein LH2 by Saga, Yoshitaka, Otsuka, Yuji, Funakoshi, Daichi, Masaoka, Yuto, Kihara, Yu, Hidaka, Tsubasa, Hatano, Hiroka, Asakawa, Hitoshi, Nagasawa, Yutaka, Tamiaki, Hitoshi

“…Natural chlorophylls have a D-ring reduced chlorin π-system; however, no naturally occurring photosynthetically active B-ring reduced chlorins have been…”
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Enhanced light harvesting and photocurrent generation activities of biohybrid light–harvesting 1–reaction center core complexes (LH1-RCs) from Rhodopseudomonas palustris by Kasagi, Genki, Yoneda, Yusuke, Kondo, Masaharu, Miyasaka, Hiroshi, Nagasawa, Yutaka, Dewa, Takehisa

“…[Display omitted] •Biohybrid LH1-RCs bearing various light-harvesting fluorophores were prepared.•Ultrafast excitation energy transfer from the fluorophores to…”
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Ultrafast Photodynamics and Quantitative Evaluation of Biohybrid Photosynthetic Antenna and Reaction Center Complexes Generating Photocurrent by Yoneda, Yusuke, Goto, Akari, Takeda, Nobutaka, Harada, Hiromi, Kondo, Masaharu, Miyasaka, Hiroshi, Nagasawa, Yutaka, Dewa, Takehisa

“…A functional linkage between light-harvesting and photocatalytic components is a pivotal issue for using solar energy in chemical conversions; however, this…”
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Extension of Light-Harvesting Ability of Photosynthetic Light-Harvesting Complex 2 (LH2) through Ultrafast Energy Transfer from Covalently Attached Artificial Chromophores by Yoneda, Yusuke, Noji, Tomoyasu, Katayama, Tetsuro, Mizutani, Naoto, Komori, Daisuke, Nango, Mamoru, Miyasaka, Hiroshi, Itoh, Shigeru, Nagasawa, Yutaka, Dewa, Takehisa

“…Introducing appropriate artificial components into natural biological systems could enrich the original functionality. To expand the available wavelength range…”
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Dynamics of Excitation Energy Transfer Between the Subunits of Photosystem II Dimer by Yoneda, Yusuke, Katayama, Tetsuro, Nagasawa, Yutaka, Miyasaka, Hiroshi, Umena, Yasufumi

“…Energy transfer dynamics in monomer and dimer of the photosystem II core complex (PSII-CC) was investigated by means of femtosecond transient absorption (TA)…”
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Ultrafast photon echo experiments in condensed phase: Detection of solvation dynamics, coherent wavepacket motions and static inhomogeneity by Nagasawa, Yutaka

“…► Development and application of three pulse photon echo experiment in condensed phase is reviewed ► Application of 3PEPS to solvation dynamics and…”
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Solvent dependent trans→cis photoisomerization of N, N′-diacetylindigo studied by femtosecond time-resolved transient absorption spectroscopy by Nakagawa, Hirofumi, Matsumoto, Akifumi, Daicho, Ayako, Ozaki, Yosuke, Ota, Chikashi, Nagasawa, Yutaka

“…[Display omitted] •Femtosecond transient absorption measurements were carried out for trans→cis photoisomarization of N,N′-diacetylindigo (DAI).•Weak hydrogen…”
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Sequential energy transfer driven by monoexponential dynamics in a biohybrid light-harvesting complex 2 (LH2) by Yoneda, Yusuke, Kato, Daiji, Kondo, Masaharu, Nagashima, Kenji V. P., Miyasaka, Hiroshi, Nagasawa, Yutaka, Dewa, Takehisa

“…Enhancing the light-harvesting potential of antenna components in a system of solar energy conversion is an important topic in the field of artificial…”
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Ultrafast Solvation Dynamics in Room Temperature Ionic Liquids Observed by Three-Pulse Photon Echo Peak Shift Measurements by Muramatsu, Masayasu, Nagasawa, Yutaka, Miyasaka, Hiroshi

“…Three-pulse photon echo peak shift (3PEPS) measurement was applied to the investigation of the primary part (<100 ps) of the solvation dynamics in a series of…”
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3D-Printed Beam Window for J-PARC COMET Project by Shidara, Hiroyuki, Makimura, Shunsuke, Fukao, Yoshinori, Nagasawa, Yutaka, Onoi, Masahiro, Kurishita, Hiroaki, Kamei, Naoya

“…We have developed the beam windows for the COherent Muon to Electron Transition (COMET) project. The COMET project is under construction at the proton beam…”
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Sub-100 fs Charge Separation and Subsequent Diffusive Solvation Observed for Asymmetric Bianthryl Derivative in Ionic Liquid by Takeuchi, Eisuke, Muramatsu, Masayasu, Katayama, Tetsuro, Yoneda, Yusuke, Ito, Syoji, Nagasawa, Yutaka, Miyasaka, Hiroshi

“…Femtosecond transient absorption (TA) and picosecond time-resolved fluorescence (TRF) spectroscopies were applied to the charge separation (CS) dynamics of…”
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Femtosecond coherent wavepacket motion in an ultrafast electron transfer system composed of naphthacene derivative in an electron donating solvent by Yoneda, Yusuke, Nambu, Shohei, Takeuchi, Eisuke, Nagasawa, Yutaka, Miyasaka, Hiroshi

“…•Femtosecond transient absorption measurements were carried out for naphthacene derivative.•In an inert solvent, 1-chloronaphthalene, both the intensity and…”
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Constraint-induced structural deformation of planarized triphenylboranes in the excited state by Kushida, Tomokatsu, Camacho, Cristopher, Shuto, Ayumi, Irle, Stephan, Muramatsu, Masayasu, Katayama, Tetsuro, Ito, Syoji, Nagasawa, Yutaka, Miyasaka, Hiroshi, Sakuda, Eri, Kitamura, Noboru, Zhou, Zhiguo, Wakamiya, Atsushi, Yamaguchi, Shigehiro

“…Triphenylboranes planarized with three methylene bridges exhibited dual fluorescence bands around 340 and 400 nm despite their structural constraint. To…”
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Reconstitution of 3‑Acetyl Chlorophyll a into Light-Harvesting Complex 2 from the Purple Photosynthetic Bacterium Phaeospirillum molischianum by Saga, Yoshitaka, Yamashita, Madoka, Imanishi, Michie, Kimura, Yukihiro, Masaoka, Yuto, Hidaka, Tsubasa, Nagasawa, Yutaka

“…The manipulation of B800 bacteriochlorophyll (BChl) a in light-harvesting complex 2 (LH2) from the purple photosynthetic bacterium Phaeospirillum molischianum…”
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