Search Results - "Sakai, Ken"

Earth-Abundant Photocatalytic CO2 Reduction by Multielectron Chargeable Cobalt Porphyrin Catalysts: High CO/H2 Selectivity in Water Based on Phase Mismatch in Frontier MO Association by Zhang, Xian, Yamauchi, Kosei, Sakai, Ken

“…To stop global warming and climate changes, substantial efforts have been made to diminish CO2 emission. Photocatalytic and electrocatalytic CO2 reduction into…”
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Highly Efficient and Selective Photocatalytic CO2 Reduction to CO in Water by a Cobalt Porphyrin Molecular Catalyst by Call, Arnau, Cibian, Mihaela, Yamamoto, Keiya, Nakazono, Takashi, Yamauchi, Kosei, Sakai, Ken

“…The performance of a water-soluble cobalt porphyrin ([{meso-tetra­(4-sulfonatophenyl)­porphyrinato}­cobalt­(III)], CoTPPS) as a catalyst for the photoreduction…”
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Near‐Infrared Light‐Driven Hydrogen Evolution from Water Using a Polypyridyl Triruthenium Photosensitizer by Tsuji, Yutaro, Yamamoto, Keiya, Yamauchi, Kosei, Sakai, Ken

“…In order to realize artificial photosynthetic devices for splitting water to H2 and O2 (2 H2O+hν→2 H2+O2), it is desirable to use a wider wavelength range of…”
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A Nickel Dithiolate Water Reduction Catalyst Providing Ligand‐Based Proton‐Coupled Electron‐Transfer Pathways by Koshiba, Keita, Yamauchi, Kosei, Sakai, Ken

“…A nickel pyrazinedithiolate ([Ni(dcpdt)2]2−; dcpdt=5,6‐dicyanopyrazine‐2,3‐dithiolate), bearing a NiS4 core similar to the active center of [NiFe] hydrogenase,…”
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Cobalt porphyrins as homogeneous catalysts for water oxidation by Nakazono, Takashi, Parent, Alexander Rene, Sakai, Ken

“…Three water-soluble cobalt porphyrins have been investigated as water oxidation catalysts via photo-initiation using Ru(II)(bpy)3(2+)/Na2S2O8. The pH…”
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Homogeneous catalysis of platinum(II) complexes in photochemical hydrogen production from water by Sakai, Ken, Ozawa, Hironobu

“…This review concentrates on the Pt(II)-catalyzed reduction of water into molecular hydrogen, with emphasis given to the works undertaken thus far by the…”
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Color Changes of a Full‐Color Emissive ESIPT Fluorophore in Response to Recognition of Certain Acids and Their Conjugate Base Anions by Tsuchiya, Saki, Sakai, Ken‐ichi, Kawano, Keiichi, Nakane, Yuta, Kikuchi, Takemitsu, Akutagawa, Tomoyuki

“…2‐(1,3‐Benzothiazol‐2‐yl)‐4‐methoxy‐6‐(1,4,5‐triphenyl‐1H‐imidazol‐2‐yl)phenol (BTImP) is an excited‐state intramolecular proton transfer (ESIPT) fluorophore,…”
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Supramolecular Chirality Achieved by Assembly of Small π‑Molecules of Octahydrobinaphtols with Axial Chirality by Kobayashi, Kei, Sakai, Ken-ichi, Suzuki, Seika, Imai, Yoshitane, Tsushima, Toshitaka, Akutagawa, Tomoyuki

“…5,5′,6,6′,7,7′,8,8′-Octahydro-1,1′-bi-2-naphthol (hbNaph) is an axially chiral molecule consisting of a smaller π-electronic system than that for…”
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Thriving in the shadow of giants: The success of the Japanese surgical needle producer MANI, 1956-2016 by Sakai, Ken

“…Large companies have a clear presence in the medical instruments industry, but in their shadow, many small and medium-sized enterprises (SMEs) have…”
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Clear Evidence Showing the Robustness of a Highly Active Oxygen-evolving Mononuclear Ruthenium Complex with an Aqua Ligand by Masaoka, Shigeyuki, Sakai, Ken

“…Experiments show that [Ru(terpy)(bpy)(OH2)]2+ is highly active as a catalyst toward oxidation of water into molecular oxygen in spite of the mononuclear…”
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Progress in Base-Metal Water Oxidation Catalysis by Parent, Alexander Rene, Sakai, Ken

“…This minireview provides a brief overview of the progress that has been made in developing homogeneous water oxidation catalysts based on base metals…”
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Improving Singlet Oxygen Resistance during Photochemical Water Oxidation by Cobalt Porphyrin Catalysts by Nakazono, Takashi, Parent, Alexander R., Sakai, Ken

“…Enabling the production of solar fuels on a global scale through artificial photosynthesis requires the development of water oxidation catalysts with…”
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Photoinduced Generation of the π‑Conjugated Zwitterionic State in the ESIPT Fluorophore of 2,4-Bisimidazolylphenol by Sakai, Ken-ichi, Miyamoto, Naoya, Ogawa, Mayu, Kawano, Keiichi, Akutagawa, Tomoyuki

“…We demonstrate that 2,4-bis­(4,5-diphenyl-1H-imidazol-2-yl)­phenol (2,4-bImP) undergoes photoinduced conversion into the so-called “π-conjugated zwitterion”…”
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Photochemical H2 evolution from water catalyzed by a dichloro(diphenylbipyridine)platinum(ii) derivative tethered to multiple viologen acceptors by Kitamoto, Kyoji, Sakai, Ken

“…A new single-component photocatalyst for the reduction of water to H2, a dichloro(dpbpy)platinum(ii) derivative (dpbpy = 4,4'-diphenyl-2,2'-bipyridine)…”
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Intracluster O–O Coupling Pathway Evidenced for an Anderson-Type Single-Cobalt Polymolybdate Water Oxidation Catalyst by Taira, Natsuki, Yamauchi, Kosei, Sakai, Ken

“…Toward the establishment of a carbon-neutral society, artificial photosynthesis, replacing fossil fuels with renewable energies (H2, HCOOH, CH3OH, etc.), has…”
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Pigment-Acceptor-Catalyst Triads for Photochemical Hydrogen Evolution by Kitamoto, Kyoji, Sakai, Ken

“…In order to solve the problems of global warming and shortage of fossil fuels, researchers have been endeavoring to achieve artificial photosynthesis:…”
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ESIPT Fluorescent Chromism and Conformational Change of 3-(2-Benzothiazolyl)-4-hydroxy-benzenesulfonic acid by Amine Sorption by Nakane, Yuta, Takeda, Takashi, Hoshino, Norihisa, Sakai, Ken-ichi, Akutagawa, Tomoyuki

“…Sulfonic acid (−SO3H)-substituted 2-(2′-hydroxyphenyl)­benzothiazole (1) was designed as a new solid-state ESIPT (excited-state intramolecular proton transfer)…”
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Photocatalytic H2 Evolution Using a Ru Chromophore Tethered to Six Viologen Acceptors by Yamamoto, Keiya, Call, Arnau, Sakai, Ken

“…A new photo‐charge separator (PCS) consisting of a [Ru(bpy)3]2+ (bpy=2,2′‐bipyridine) chromophore and six viologen (MV2+) acceptors, [Ru(bpyMV2)3]14+, is…”
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Dry weight targeting: The art and science of conventional hemodialysis by Ohashi, Yasushi, Sakai, Ken, Hase, Hiroki, Joki, Nobuhiko

“…Fluid volume overload is common and is associated with adverse outcomes in hemodialysis patients. Practicing physicians individually manage fluid volume…”
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COVID‐19 of dialysis patients in Japan: Current status and guidance on preventive measures by Kikuchi, Kan, Nangaku, Masaomi, Ryuzaki, Munekazu, Yamakawa, Tomoyuki, Hanafusa, Norio, Sakai, Ken, Kanno, Yoshihiko, Ando, Ryoichi, Shinoda, Toshio, Nakamoto, Hidetomo, Akizawa, Tadao

“…In Japan, the first case of COVID‐19 in dialysis patients was reported on March 1, 2020. A total of 31 cases were reported by April 10, and it increased to 95…”
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