{"_buckets": {"deposit": "dc00ac14-57bf-4ef5-9e65-441594ef0a3c"}, "_deposit": {"created_by": 140, "id": "14849", "owners": [140], "pid": {"revision_id": 0, "type": "depid", "value": "14849"}, "status": "published"}, "_oai": {"id": "oai:gifu-pu.repo.nii.ac.jp:00014849", "sets": ["345"]}, "author_link": ["17923", "36611", "36612", "32440", "36610"], "item_10004_biblio_info_7": {"attribute_name": "書誌情報", "attribute_value_mlt": [{"bibliographicIssueDates": {"bibliographicIssueDate": "2021-12-22", "bibliographicIssueDateType": "Issued"}, "bibliographicIssueNumber": "1", "bibliographicPageStart": "9", "bibliographicVolumeNumber": "11", "bibliographic_titles": [{"bibliographic_title": "antioxidants"}, {"bibliographic_title": "antioxidants", "bibliographic_titleLang": "en"}]}]}, "item_10004_description_5": {"attribute_name": "抄録", "attribute_value_mlt": [{"subitem_description": "Scavenging of superoxide radical anion (O2•−) by tocopherols (TOH) and related compounds was investigated on the basis of cyclic voltammetry and in situ electrolytic electron spin resonance spectrum in N,N-dimethylformamide (DMF) with the aid of density functional theory (DFT) calculations. Quasi-reversible dioxygen/O2•− redox was modified by the presence of TOH, suggesting that the electrogenerated O2•− was scavenged by α-, β-, γ-TOH through proton-coupled electron transfer (PCET), but not by δ-TOH. The reactivities of α-, β-, γ-, and δ-TOH toward O2•− characterized by the methyl group on the 6-chromanol ring was experimentally confirmed, where the methyl group promotes the PCET mechanism. Furthermore, comparative analyses using some related compounds suggested that the para-oxygen-atom in the 6-chromanol ring is required for a successful electron transfer (ET) to O2•− through the PCET. The electrochemical and DFT results in dehydrated DMF suggested that the PCET mechanism involves the preceding proton transfer (PT) forming a hydroperoxyl radical, followed by a PCET (intermolecular ET–PT). The O2•− scavenging by TOH proceeds efficiently along the PCET mechanism involving one ET and two PTs.", "subitem_description_type": "Abstract"}]}, "item_10004_publisher_8": {"attribute_name": "出版者", "attribute_value_mlt": [{"subitem_publisher": "MDPI"}]}, "item_10004_relation_14": {"attribute_name": "DOI", "attribute_value_mlt": [{"subitem_relation_type_id": {"subitem_relation_type_id_text": "doi.org/10.3390/antiox11010009", "subitem_relation_type_select": "DOI"}}]}, "item_10004_source_id_9": {"attribute_name": "ISSN", "attribute_value_mlt": [{"subitem_source_identifier": "2076-3921", "subitem_source_identifier_type": "ISSN"}]}, "item_creator": {"attribute_name": "著者", "attribute_type": "creator", "attribute_value_mlt": [{"creatorNames": [{"creatorName": "Nakayama, Tatsushi"}], "nameIdentifiers": [{"nameIdentifier": "32440", "nameIdentifierScheme": "WEKO"}, {"nameIdentifier": "N000638361", "nameIdentifierScheme": "CiNii ID", "nameIdentifierURI": "http://ci.nii.ac.jp/nrid/N000638361"}]}, {"creatorNames": [{"creatorName": "Honda, Ryo"}], "nameIdentifiers": [{"nameIdentifier": "36610", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Kuwata, Kazuo"}], "nameIdentifiers": [{"nameIdentifier": "36611", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Usui, Shigeyuki"}], "nameIdentifiers": [{"nameIdentifier": "36612", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Uno, Bunji"}], "nameIdentifiers": [{"nameIdentifier": "17923", "nameIdentifierScheme": "WEKO"}]}]}, "item_files": {"attribute_name": "ファイル情報", "attribute_type": "file", "attribute_value_mlt": [{"accessrole": "open_date", "date": [{"dateType": "Available", "dateValue": "2023-03-20"}], "displaytype": "detail", "download_preview_message": "", "file_order": 0, "filename": "antioxidants-11-00009.pdf", "filesize": [{"value": "3.8 MB"}], "format": "application/pdf", "future_date_message": "", "is_thumbnail": false, "licensetype": "license_6", "mimetype": "application/pdf", "size": 3800000.0, "url": {"label": "https://www.mdpi.com/2076-3921/11/1/9", "url": "https://gifu-pu.repo.nii.ac.jp/record/14849/files/antioxidants-11-00009.pdf"}, "version_id": "fe960715-6b4c-4e29-9c13-57fed1ea7b1a"}]}, "item_keyword": {"attribute_name": "キーワード", "attribute_value_mlt": [{"subitem_subject": "proton-coupled electron transfer", "subitem_subject_scheme": "Other"}, {"subitem_subject": "superoxide radical anion", "subitem_subject_scheme": "Other"}, {"subitem_subject": "antioxidants", "subitem_subject_scheme": "Other"}, {"subitem_subject": "cyclic voltammetry", "subitem_subject_scheme": "Other"}, {"subitem_subject": "electron spin resonance spectrum", "subitem_subject_scheme": "Other"}, {"subitem_subject": "tocopherol", "subitem_subject_scheme": "Other"}, {"subitem_subject": "proton-coupled electron transfer", "subitem_subject_language": "en", "subitem_subject_scheme": "Other"}, {"subitem_subject": "superoxide radical anion", "subitem_subject_language": "en", "subitem_subject_scheme": "Other"}, {"subitem_subject": "antioxidants", "subitem_subject_language": "en", "subitem_subject_scheme": "Other"}, {"subitem_subject": "cyclic voltammetry", "subitem_subject_language": "en", "subitem_subject_scheme": "Other"}, {"subitem_subject": "electron spin resonance spectrum", "subitem_subject_language": "en", "subitem_subject_scheme": "Other"}, {"subitem_subject": "tocopherol", "subitem_subject_language": "en", "subitem_subject_scheme": "Other"}]}, "item_language": {"attribute_name": "言語", "attribute_value_mlt": [{"subitem_language": "eng"}]}, "item_resource_type": {"attribute_name": "資源タイプ", "attribute_value_mlt": [{"resourcetype": "article", "resourceuri": "http://purl.org/coar/resource_type/c_6501"}]}, "item_title": "Electrochemical and Mechanistic Study of Reactivities of α-, β-, γ-, and δ-Tocopherol toward Electrogenerated Superoxide in N,N-Dimethylformamide through Proton-Coupled Electron Transfer", "item_titles": {"attribute_name": "タイトル", "attribute_value_mlt": [{"subitem_title": "Electrochemical and Mechanistic Study of Reactivities of α-, β-, γ-, and δ-Tocopherol toward Electrogenerated Superoxide in N,N-Dimethylformamide through Proton-Coupled Electron Transfer"}, {"subitem_title": "Electrochemical and Mechanistic Study of Reactivities of α-, β-, γ-, and δ-Tocopherol toward Electrogenerated Superoxide in N,N-Dimethylformamide through Proton-Coupled Electron Transfer", "subitem_title_language": "en"}]}, "item_type_id": "10004", "owner": "140", "path": ["345"], "permalink_uri": "https://gifu-pu.repo.nii.ac.jp/records/14849", "pubdate": {"attribute_name": "公開日", "attribute_value": "2021-12-22"}, "publish_date": "2021-12-22", "publish_status": "0", "recid": "14849", "relation": {}, "relation_version_is_last": true, "title": ["Electrochemical and Mechanistic Study of Reactivities of α-, β-, γ-, and δ-Tocopherol toward Electrogenerated Superoxide in N,N-Dimethylformamide through Proton-Coupled Electron Transfer"], "weko_shared_id": -1}