Výsledky vyhledávání - "Yutaka Ohsaki"

Akademický článek

Molecular Characteristics of Water-Insoluble Tin-Porphyrins for Designing the One-Photon-Induced Two-Electron Oxidation of Water in Artificial Photosynthesis

Autor: Arun Thomas, Yutaka Ohsaki, Ryosuke Nakazato, Fazalurahman Kuttassery, Siby Mathew, Sebastian Nybin Remello, Hiroshi Tachibana, Haruo Inoue

Publikováno v: Molecules, Vol 28, Iss 4, p 1882 (2023)

Faced with the new stage of water oxidation by molecular catalysts (MCs) in artificial photosynthesis to overcome the bottle neck issue, the “Photon-flux density problem of sunlight,” a two-electron oxidation process forming H2O2 in place of the

Externí odkaz: https://doaj.org/article/ade95f6accd74805b51896c3d830f5bc

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Photobiocatalytic Conversion of Solar Energy to NH3 from N2 and H2O under Ambient Condition

Autor: Yutaka Ohsaki, Xiao-feng Shen, Motonori Watanabe, Jun Tae Song, Tatsumi Ishihara, Nuttavut kosem

Several methods and catalysts have been investigated for eco-friendly ammonia (NH3) production under mild conditions in the past few decades. NH3 is important chemical fertilizer and now expecting as H2 carrier, and mainly synthesized by Haber-Bosch

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::27dca23344c9f625a24a88a0ac4695f4
https://doi.org/10.21203/rs.3.rs-2945638/v1

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Estimation of Adsorption Distribution of Di-cationic Porphyrin on Anionic Nanosheet Surface Using Self-fluorescence Quenching as a Probe

Autor: Shinsuke Takagi, Yutaka Ohsaki, Tetsuya Shimada, Tamao Ishida, Ryohei Shibatani

Publikováno v: Chemistry Letters. 50:1983-1986

To estimate the adsorption distribution of cationic dyes on the inorganic nanosheets, the fluorescence behavior of cis-DMPyP, which is a di-cationic porphyrin, was investigated using self-fluoresce...

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::116bcc48bf2bef2101306668a8695b52
https://doi.org/10.1246/cl.210506

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Alternative route to bypass the bottle-neck of water oxidation: Two-electron oxidation of water catalyzed by earth-abundant metalloporphyrins

Autor: Yutaka Ohsaki, Yu Nabetani, Arun Thomas, Keito Sano, Sebastian Nybin Remello, Siby Mathew, Hiroshi Tachibana, Fazalurahman Kuttassery, Haruo Inoue

Publikováno v: Coordination Chemistry Reviews. 377:64-72

Recent development on alternative route to bypass the bottle-neck of water oxidation, two-electron oxidation of water catalyzed by earth-abundant metalloporphyrins to form hydrogen peroxide, has been briefly reviewed. The three pioneering reports by

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0b13badc84a34a17cdf9b41143e9c02c
https://doi.org/10.1016/j.ccr.2018.08.027

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How does the tin(IV)-insertion to porphyrins proceed in water at ambient temperature?: Re-investigation by time dependent 1H NMR and detection of intermediates

Autor: Fazalurahman Kuttassery, Hiroshi Tachibana, Shinsuke Takagi, Yutaka Ohsaki, Siby Mathew, Sebastian Nybin Remello, Tetsuya Shimada, Haruo Inoue, Yu Nabetani, Arun Thomas

Publikováno v: Inorganica Chimica Acta. 482:914-924

Water soluble tin(IV)-porphyrins, trans-dihydroxy-5,10,15,20-tetra(N-methyl-4′-pyridiniumyl)porphyrinate tin (IV) (Sn(IV)TMPyP(OH)2) was successfully synthesized in high yield (90%) through one-pot process in water at room temperature by treating t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4fb7b6f42ebb7cafed8dde4c86960323
https://doi.org/10.1016/j.ica.2018.07.036

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Protolytic behavior of axially coordinated hydroxy groups of Tin(IV) porphyrins as promising molecular catalysts for water oxidation

Autor: Siby Mathew, Yutaka Ohsaki, Daisuke Yamamoto, Sebastian Nybin Remello, Fazalurhaman Kuttassery, Haruo Inoue, Hiroshi Tachibana, Yu Nabetani, Arun Thomas

Publikováno v: Journal of Photochemistry and Photobiology A: Chemistry. 358:402-410

A series of four Tin(IV)porphyrins with different substituents on meso-phenyl groups, trans-dihydroxy-5,10,15,20-tetra(p-tolyl)porphyrinatetin(IV) (Sn(IV)TTP(OH)2), trans-dihydroxy-tetra(2,4,6-trimethyl)phenylporphyrinatetin(IV) (Sn(IV)TMP(OH)2), tra

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5427a00f0a5ca4cbb5d6843ba10113ba
https://doi.org/10.1016/j.jphotochem.2017.09.053

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Two-electron oxidation of water to form hydrogen peroxide initiated by one-electron oxidation of Tin (IV)-porphyrins

Autor: Haruo Inoue, Fazalurahman Kuttassery, Yutaka Ohsaki, Tamao Ishida, Shinsuke Takagi, Siby Mathew, Sebastian Nybin Remello, Tetsuya Shimada, Arun Thomas, Hiroshi Tachibana

Publikováno v: Journal of Photochemistry and Photobiology A: Chemistry. 401:112732

5, 10, 15, 20-tetra(N-methylpyridinium-4′-yl)porphyrinate tin(IV) (SnTMPyP) was found to exhibit two-electron water oxidation to form hydrogen peroxide as a primary product initiated by electrochemical one-electron oxidation. Dioxygen was also form

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1c71d4e7b0b9b8d6f8ed5ef59ad350ee
https://doi.org/10.1016/j.jphotochem.2020.112732

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Protolytic behavior of water-soluble zinc(II) porphyrin and the electrocatalytic two-electron water oxidation to form hydrogen peroxide

Autor: Sebastian Nybin Remello, Yutaka Ohsaki, Fazalurahman Kuttassery, Abin Sebastian, Haruo Inoue, Hiroshi Tachibana, Siby Mathew

Publikováno v: Journal of Photochemistry and Photobiology A: Chemistry. 400:112619

Two-electron water oxidation is an energy-efficient way for solar energy conversion and one of the promising candidates to get through the bottleneck of artificial photosynthesis, photon- flux density problem. In light of renewable energy factor (REF

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::109ce514955ffdbed59fa666ba789d2f
https://doi.org/10.1016/j.jphotochem.2020.112619

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New ν ‐type relative permeability curves for two‐phase flows through subsurface fractures

Autor: Takuya Ishibashi, Noriyoshi Tsuchiya, Masahiko Yagi, Keisuke Sakurai, Noriaki Watanabe, Tetsuya Tamagawa, Yutaka Ohsaki

Publikováno v: Water Resources Research. 51:2807-2824

Appropriate relative permeability curves for two-phase flows through subsurface fractures remain unclear. We have conducted decane-water and nitrogen-water two-phase flow experiments and simulations on real variable-aperture fractures in rocks under

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9d782a06f4d1fed589402f1e828baa80
https://doi.org/10.1002/2014wr016515

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Geologic Core Holder with a CFR PEEK Body for the X-ray CT-Based Numerical Analysis of Fracture Flow Under Confining Pressure

Autor: Hiroshi Okabe, Noriyoshi Tsuchiya, Yutaka Ohsaki, Hisao Ito, Yoshihiro Tsuchiya, Noriaki Watanabe, Takuya Ishibashi, Tetsuya Tamagawa

Publikováno v: Rock Mechanics and Rock Engineering. 46:413-418

Variables A Cross-sectional area of the model (L) a Local aperture of the fracture (L) ai Aperture at the ith voxel (L) CTVi CT value at the ith voxel (Hounsfield unit) f Correction factor for the cubic law equation k Permeability of the model (L) L

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d45b3c1805028740bb2102813c411c35
https://doi.org/10.1007/s00603-012-0311-5

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