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  1. Article ; Online: We need better preparedness and emergency responses to heat waves.

    Okada, Yohei / Hughes, Fintan / Ong, Marcus Eng Hock

    CJEM

    2024  Volume 26, Issue 2, Page(s) 73–74

    MeSH term(s) Humans ; Hot Temperature ; Disaster Planning
    Language English
    Publishing date 2024-02-08
    Publishing country England
    Document type Editorial
    ISSN 1481-8043
    ISSN (online) 1481-8043
    DOI 10.1007/s43678-024-00648-w
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Synthetic Semiconductor Photoelectrochemistry.

    Okada, Yohei

    Chemical record (New York, N.Y.)

    2021  Volume 21, Issue 9, Page(s) 2223–2238

    Abstract: In the field of synthetic organic chemistry, photochemical and electrochemical approaches are often considered to be competing technologies that induce single electron transfer (SET). Recently, their fusion, i. e., the "photoelectrochemical" approach, ... ...

    Abstract In the field of synthetic organic chemistry, photochemical and electrochemical approaches are often considered to be competing technologies that induce single electron transfer (SET). Recently, their fusion, i. e., the "photoelectrochemical" approach, has become the focus of attention. In this approach, both solar and electrical energy are used in creative combinations. Historically, the term "photoelectrochemistry" has been used in more inorganic fields, where a photovoltaic effect exhibited by semiconducting materials is employed. Semiconductors have also been studied intensively as photocatalysts; however, they recently have taken a back seat to molecular photocatalysts. In this account, we would like to revisit semiconductor photocatalysts in the field of synthetic organic chemistry to demonstrate that semiconductor "photoelectrochemical" approaches are more than mere alternatives to molecular photochemical and/or electrochemical approaches.
    Language English
    Publishing date 2021-03-26
    Publishing country United States
    Document type Journal Article ; Review
    ZDB-ID 2044646-9
    ISSN 1528-0691 ; 1527-8999
    ISSN (online) 1528-0691
    ISSN 1527-8999
    DOI 10.1002/tcr.202100029
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Arene C-H Amination with

    Nakayama, Kaii / Okada, Yohei

    The Journal of organic chemistry

    2023  Volume 88, Issue 9, Page(s) 5913–5922

    Abstract: Arene C-H aminations using catalytic amounts of a 2,3-dichloro-5,6-dicyano- ...

    Abstract Arene C-H aminations using catalytic amounts of a 2,3-dichloro-5,6-dicyano-
    Language English
    Publishing date 2023-04-25
    Publishing country United States
    Document type Journal Article
    ZDB-ID 123490-0
    ISSN 1520-6904 ; 0022-3263
    ISSN (online) 1520-6904
    ISSN 0022-3263
    DOI 10.1021/acs.joc.3c00293
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

    Zs.A 4473: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (2.OG)
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  4. Article: The Neurorehabilitation of Neurological Movement Disorders Requires Rigorous and Sustained Research.

    Matsugi, Akiyoshi / Yoshida, Naoki / Nakano, Hideki / Okada, Yohei

    Journal of clinical medicine

    2024  Volume 13, Issue 3

    Abstract: Movement disorders that stem from neurological conditions such as stroke, cerebral palsy, multiple sclerosis (MS), Parkinson's disease (PD), and spinocerebellar degeneration (SCD) can significantly impair a person's activities of daily living (ADL) [ ... ]. ...

    Abstract Movement disorders that stem from neurological conditions such as stroke, cerebral palsy, multiple sclerosis (MS), Parkinson's disease (PD), and spinocerebellar degeneration (SCD) can significantly impair a person's activities of daily living (ADL) [...].
    Language English
    Publishing date 2024-02-01
    Publishing country Switzerland
    Document type Editorial
    ZDB-ID 2662592-1
    ISSN 2077-0383
    ISSN 2077-0383
    DOI 10.3390/jcm13030852
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  5. Article ; Online: Redox-Neutral Radical-Cation Reactions

    Yohei OKADA

    Electrochemistry, Vol 88, Iss 6, Pp 497-

    Multiple Carbon–Carbon Bond Formations Enabled by Single-Electron Transfer

    2020  Volume 506

    Abstract: In this comprehensive paper, three redox-neutral reactions, including [2 + 2] and [4 + 2] cycloadditions and vinylcyclopropane rearrangements, are outlined from the viewpoint of energy conversion. These reactions demonstrate the power of electrosynthesis ...

    Abstract In this comprehensive paper, three redox-neutral reactions, including [2 + 2] and [4 + 2] cycloadditions and vinylcyclopropane rearrangements, are outlined from the viewpoint of energy conversion. These reactions demonstrate the power of electrosynthesis in the field of synthetic organic chemistry not only from the viewpoint of energy conversion but also from that of redox economy because four-, five-, and six-membered-ring skeletons are constructed without a change in oxidation state of the growing molecules in synthetic routes. The key for all of the reactions is precise control of single-electron transfer (SET) in lithium perchlorate/nitromethane solution, where oxidative SET is facilitated and the thus-generated radical cations are highly stabilized. SET processes can be visualized by plotting the highest occupied molecular orbital and spin density distributions to obtain theoretical pictures for a mechanistic understanding of the reactions; the deduced mechanisms are in good accordance with the reactions’ formal expressions.
    Keywords redox-neutral reaction ; carbon–carbon bond formation ; single-electron transfer ; electrosynthesis ; Technology ; T ; Physical and theoretical chemistry ; QD450-801
    Subject code 540
    Language English
    Publishing date 2020-11-01T00:00:00Z
    Publisher The Electrochemical Society of Japan
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  6. Article ; Online: Response to Letter to the Editor: Japan Coma Scale and the Disorientation of the Nervous System.

    Nakajima, Mikio / Okada, Yohei / Sonoo, Tomohiro / Goto, Tadahiro

    Journal of epidemiology

    2023  Volume 33, Issue 10, Page(s) 544

    MeSH term(s) Humans ; Coma ; Japan ; Hospital Mortality ; Confusion
    Language English
    Publishing date 2023-01-31
    Publishing country Japan
    Document type Letter ; Comment
    ZDB-ID 1442118-5
    ISSN 1349-9092 ; 0917-5040
    ISSN (online) 1349-9092
    ISSN 0917-5040
    DOI 10.2188/jea.JE20220266
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

    Zs.A 4931: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (2.OG)
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  7. Article ; Online: "Snapshots" of Intramolecular Electron Transfer in Redox Tag-Guided [2 + 2] Cycloadditions.

    Okada, Yohei

    The Journal of organic chemistry

    2019  Volume 84, Issue 4, Page(s) 1882–1886

    Abstract: Although single electron transfer (SET) is widely illustrated in formal expressions, it is not rationally supported by computational studies. The present work provided "snapshots" of intramolecular SET in redox tag-guided [2 + 2] cycloadditions, enabled ... ...

    Abstract Although single electron transfer (SET) is widely illustrated in formal expressions, it is not rationally supported by computational studies. The present work provided "snapshots" of intramolecular SET in redox tag-guided [2 + 2] cycloadditions, enabled by density functional theory calculations. Significant shifts of spin and positive charge are observed in relation to the carbon-carbon bond formation in the cyclobutyl framework, which is in excellent accordance with a formal expression of the reaction mechanism.
    Language English
    Publishing date 2019-01-08
    Publishing country United States
    Document type Journal Article
    ZDB-ID 123490-0
    ISSN 1520-6904 ; 0022-3263
    ISSN (online) 1520-6904
    ISSN 0022-3263
    DOI 10.1021/acs.joc.8b02861
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

    Zs.A 4473: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (2.OG)
    ab Jg. 2022: Lesesaal (EG)

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  8. Article ; Online: Merger of Rotation Restriction and Symmetrical Push-Pull to Synthesize Single-Benzene Yellow Fluorophors.

    Wang, Zimo / Horiguchi, Genki / Kamiya, Hidehiro / Okada, Yohei

    Chemistry (Weinheim an der Bergstrasse, Germany)

    2023  , Page(s) e202302000

    Abstract: Invited for the cover of this issue is the group of Yohei Okada at Tokyo University of Agriculture ...

    Abstract Invited for the cover of this issue is the group of Yohei Okada at Tokyo University of Agriculture and Technology. The image depicts a series of single-benzene fluorophores. Constructing symmetrical push-pull motifs in combination with restricting bond rotations is the key to creating small yet brightly emitting fluorophores. Read the full text of the article at 10.1002/chem.202301411.
    Language English
    Publishing date 2023-07-07
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 1478547-X
    ISSN 1521-3765 ; 0947-6539
    ISSN (online) 1521-3765
    ISSN 0947-6539
    DOI 10.1002/chem.202302000
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  9. Article: Radical cation Diels-Alder reactions of arylidene cycloalkanes.

    Nakayama, Kaii / Kamiya, Hidehiro / Okada, Yohei

    Beilstein journal of organic chemistry

    2022  Volume 18, Page(s) 1100–1106

    Abstract: ... ...

    Abstract TiO
    Language English
    Publishing date 2022-08-25
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 2192461-2
    ISSN 1860-5397
    ISSN 1860-5397
    DOI 10.3762/bjoc.18.112
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Merger of Rotation Restriction and Symmetrical Push-Pull to Synthesize Single-Benzene Yellow Fluorophores.

    Wang, Zimo / Horiguchi, Genki / Kamiya, Hidehiro / Okada, Yohei

    Chemistry (Weinheim an der Bergstrasse, Germany)

    2023  Volume 29, Issue 44, Page(s) e202301411

    Abstract: Small yet brightly emitting fluorophores should find fundamental and practical applications in both academic and industrial settings. In this report, tetrahydrobenzodifuran is used as the core architecture to create novel single-benzene fluorophores. The ...

    Abstract Small yet brightly emitting fluorophores should find fundamental and practical applications in both academic and industrial settings. In this report, tetrahydrobenzodifuran is used as the core architecture to create novel single-benzene fluorophores. The key for realizing unique and powerful photophysical properties is the combination of the construction of symmetrical push-pull motifs and the restriction of bond rotations to suppress molecular motions that cause non-radiative transitions.
    Language English
    Publishing date 2023-06-21
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 1478547-X
    ISSN 1521-3765 ; 0947-6539
    ISSN (online) 1521-3765
    ISSN 0947-6539
    DOI 10.1002/chem.202301411
    Database MEDical Literature Analysis and Retrieval System OnLINE

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