{"created":"2023-05-15T14:51:59.137394+00:00","id":71064,"links":{},"metadata":{"_buckets":{"deposit":"fb184ce5-86d7-4254-b6c6-e5ac81487a69"},"_deposit":{"created_by":1,"id":"71064","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"71064"},"status":"published"},"_oai":{"id":"oai:repo.qst.go.jp:00071064","sets":["10:28"]},"author_link":["698481","698484","698482","698477","698483","698485","698479","698480","698478"],"item_10005_date_7":{"attribute_name":"発表年月日","attribute_value_mlt":[{"subitem_date_issued_datetime":"2013-03-13","subitem_date_issued_type":"Issued"}]},"item_10005_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"Dismutation of superoxide is a primary scavenging reaction of reactive oxygen species (ROS) using the metalloprotein, superoxide dismutase (SOD). SOD is known to contain redox active metal ions, such as Mn, Cu-Zn, and Fe, in its active center. However, there are few reports about dismutation of free radicals by redox-inactive metal ions. In this study, we report the dismutation of 2,2-diphenyl-1-picrylhydrazyl radical (DPPH radical) as an ROS model catalyzed by redox-inactive metal ions with Lewis acidity. In acetonitrile at ambient temperature, the absorption band at 519 nm due to DPPHradical was decreased by addition of Sc(OSO2CF3)3, which has a very strong Lewis acidity. In the case of Mg(ClO4)2 as a weaker Lewis acid than Sc3+, no consumption of DPPHradical was observed in the presence of Mg2+. On the other hand, upon addition of Mg(ClO4)2 with acetic acid, DPPHradical was quenched efficiently. In summary, a strong Lewis acid, Sc3+, can promote dismutation of DPPHradical, while protons are required for the dismutation of DPPHradical to occur in the presence of a weak Lewis acid, Mg2+.","subitem_description_type":"Abstract"}]},"item_10005_description_6":{"attribute_name":"会議概要（会議名, 開催地, 会期, 主催者等）","attribute_value_mlt":[{"subitem_description":"International Free Radical Winter School in Muikamachi","subitem_description_type":"Other"}]},"item_access_right":{"attribute_name":"アクセス権","attribute_value_mlt":[{"subitem_access_right":"metadata only access","subitem_access_right_uri":"http://purl.org/coar/access_right/c_14cb"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Kawashima, Tomonori"}],"nameIdentifiers":[{"nameIdentifier":"698477","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Nakanishi, Ikuo"}],"nameIdentifiers":[{"nameIdentifier":"698478","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Ohkubo, Kei"}],"nameIdentifiers":[{"nameIdentifier":"698479","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Fukuzumi, Shunichi"}],"nameIdentifiers":[{"nameIdentifier":"698480","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Ozawa, Toshihiko"}],"nameIdentifiers":[{"nameIdentifier":"698481","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Matsumoto, Kenichiro"}],"nameIdentifiers":[{"nameIdentifier":"698482","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"川島 知憲","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"698483","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"中西 郁夫","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"698484","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"松本 謙一郎","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"698485","nameIdentifierScheme":"WEKO"}]}]},"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":"conference object","resourceuri":"http://purl.org/coar/resource_type/c_c94f"}]},"item_title":"Dismutation of 2,2-Diphenyl-1-picrylhydrazyl Radical Catalyzed by Lewis and Bronsted Acids","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Dismutation of 2,2-Diphenyl-1-picrylhydrazyl Radical Catalyzed by Lewis and Bronsted Acids"}]},"item_type_id":"10005","owner":"1","path":["28"],"pubdate":{"attribute_name":"公開日","attribute_value":"2013-03-14"},"publish_date":"2013-03-14","publish_status":"0","recid":"71064","relation_version_is_last":true,"title":["Dismutation of 2,2-Diphenyl-1-picrylhydrazyl Radical Catalyzed by Lewis and Bronsted Acids"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-05-15T19:55:37.269566+00:00"}