{"created":"2024-11-22T07:53:43.083119+00:00","id":2008899,"links":{},"metadata":{"_buckets":{"deposit":"cd85dd7d-4529-45b9-ba8b-e39a30605e3c"},"_deposit":{"created_by":7,"id":"2008899","owners":[7],"pid":{"revision_id":0,"type":"depid","value":"2008899"},"status":"published"},"_oai":{"id":"oai:tokushima-u.repo.nii.ac.jp:02008899","sets":["1713853213384:1713853295607"]},"author_link":["53","59"],"item_10001_alternative_title_1":{"attribute_name":"タイトル別表記","attribute_value_mlt":[{"subitem_alternative_title":"HYDROGEN-BOND-ASSISTED STEREOCONTROL","subitem_alternative_title_language":"en"},{"subitem_alternative_title":"Hydrogen-Bond-Assisted Stereocontrol in Radical Polymerization of N-Isopropylacrylamide by Using Primary Alkyl Phosphate : Effect of Chain Length of Straight Ester Group","subitem_alternative_title_language":"en"},{"subitem_alternative_title":"Stereocontrol in NIPAAm polymerization","subitem_alternative_title_language":"en"}]},"item_10001_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2004-11-15","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"1","bibliographicPageEnd":"62","bibliographicPageStart":"50","bibliographicVolumeNumber":"43","bibliographic_titles":[{"bibliographic_title":"Journal of Polymer Science Part A : Polymer Chemistry","bibliographic_titleLang":"en"}]}]},"item_10001_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"Radical polymerizations of N-isopropylacrylamide (NIPAAm) were carried out in toluene at low temperatures in the presence of phosphoric acid esters such as trimethyl, triethyl (TEP), tri-n-propyl, and tri-n-butyl phosphates (TBP).  Syndiotactic-rich poly(NIPAAm)s were obtained at the temperature range from –60°C to 0°C, and particularly TEP provided the highest syndiotacticity (racemo diad = 65%) at –40°C.  On the other hand, lowering temperature reversed the stereoselectivity of the propagation reaction so that isotactic-rich poly(NIPAAm)s were obtained at –80°C.  In particular, TBP exhibited the most isotactic-specificity (meso diad = 57%).  Job's plots for NIPAAm-TBP mixtures revealed that NIPAAm and TBP formed 1:1 complex at 0°C and predominantly 1:2 complex at –80°C through a hydrogen-bonding interaction. Therefore, it is considered that the stereospecificity of NIPAAm polymerization should depend on the stoichiometry of the hydrogen-bond-assisted complex.  Thus, the mechanism for the present polymerization system was discussed.","subitem_description_language":"en","subitem_description_type":"Abstract"}]},"item_10001_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"Wiley","subitem_publisher_language":"en"}]},"item_10001_rights_15":{"attribute_name":"権利情報","attribute_value_mlt":[{"subitem_rights":"This is the peer reviewed version of the following article: Hirano, T., Ishii, S., Kitajima, H., Seno, M. and Sato, T. (2005), Hydrogen‐bond‐assisted stereocontrol in the radical polymerization of N‐isopropylacrylamide with primary alkyl phosphate: The effect of the chain length of the straight ester group. J. Polym. Sci. A Polym. Chem., 43: 50-62., which has been published in final form at https://doi.org/10.1002/pola.20475. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.","subitem_rights_language":"en"}]},"item_10001_source_id_9":{"attribute_name":"収録物ID","attribute_value_mlt":[{"subitem_source_identifier":"0887624X","subitem_source_identifier_type":"ISSN"},{"subitem_source_identifier":"10990518","subitem_source_identifier_type":"ISSN"},{"subitem_source_identifier":"AA1068915X","subitem_source_identifier_type":"NCID"},{"subitem_source_identifier":"AA11624127","subitem_source_identifier_type":"NCID"}]},"item_10001_version_type_20":{"attribute_name":"出版タイプ","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_ab4af688f83e57aa","subitem_version_type":"AM"}]},"item_1715043197608":{"attribute_name":"アクセス権","attribute_value_mlt":[{"subitem_access_right":"open 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polymers","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"isotactic","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"syndiotactic","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"stereospecific polymerization","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"tacticity","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":"journal article","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"Hydrogen-Bond-Assisted Stereocontrol in the Radical Polymerization of N-Isopropylacrylamide with Primary Alkyl Phosphate : The Effect of the Chain Length of the Straight Ester 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