{"@context":{"@vocab":"https://cir.nii.ac.jp/schema/1.0/","rdfs":"http://www.w3.org/2000/01/rdf-schema#","dc":"http://purl.org/dc/elements/1.1/","dcterms":"http://purl.org/dc/terms/","foaf":"http://xmlns.com/foaf/0.1/","prism":"http://prismstandard.org/namespaces/basic/2.0/","cinii":"http://ci.nii.ac.jp/ns/1.0/","datacite":"https://schema.datacite.org/meta/kernel-4/","ndl":"http://ndl.go.jp/dcndl/terms/","jpcoar":"https://github.com/JPCOAR/schema/blob/master/2.0/"},"@id":"https://cir.nii.ac.jp/crid/1361131417913123712.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1021/acs.macromol.8b01453"}},{"identifier":{"@type":"URI","@value":"https://pubs.acs.org/doi/pdf/10.1021/acs.macromol.8b01453"}}],"resourceType":"学術雑誌論文(journal article)","dc:title":[{"@value":"Helix Induction to Polyfluorenes Using Circularly Polarized Light: Chirality Amplification, Phase-Selective Induction, and Anisotropic Emission"}],"description":[{"notation":[{"@value":"Chirality induction (preferred-handed helix induction) to poly(9,9-dioctylfluorene-2,7-diyl) (poly(DOF)), poly(9,9-didodecylfluorene-2,7-diyl) (poly(DDF)), and poly(9,9-dihexylfluorene-2,7-diyl) (poly(DHF)) using circularly polarized light (CPL) was thoroughly investigated mainly using film samples. We found that the presence of the β-phase is indispensable in chirality induction to poly(DOF) which suggests the importance of interchain interactions and that chirality induction first occurs preferentially in the β-phase and then extended to the α-phase. Chirality induction only to the β-phase was attained by irradiating at the β-phase absorbance band (435 nm) or by irradiating the full wavelength range for a short time while pure α-phase chirality is induced for poly(DHF) having no β-phase using an achiral aid molecule. Chirality induction is feasible for polymers having octyl and dodecyl chains, poly(DOF) and poly(DDF), whereas it is not possible for the polymer having a hexyl chain, poly(DHF), unless an ..."}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1381131417913123712","@type":"Researcher","foaf:name":[{"@value":"Yue Wang"}]},{"@id":"https://cir.nii.ac.jp/crid/1420564276167559040","@type":"Researcher","personIdentifier":[{"@type":"KAKEN_RESEARCHERS","@value":"80581339"},{"@type":"NRID","@value":"1000080581339"},{"@type":"NRID","@value":"9000019136284"},{"@type":"NRID","@value":"9000361706771"},{"@type":"NRID","@value":"9000283122923"},{"@type":"NRID","@value":"9000411623579"},{"@type":"NRID","@value":"9000258598006"},{"@type":"NRID","@value":"9000283123777"},{"@type":"NRID","@value":"9000257717996"},{"@type":"NRID","@value":"9000258597998"},{"@type":"NRID","@value":"9000283123961"},{"@type":"NRID","@value":"9000258600935"},{"@type":"NRID","@value":"9000257735378"},{"@type":"NRID","@value":"9000291605092"},{"@type":"NRID","@value":"9000283123444"},{"@type":"NRID","@value":"9000000874069"},{"@type":"NRID","@value":"9000283122564"},{"@type":"NRID","@value":"9000356896993"},{"@type":"NRID","@value":"9000283911920"},{"@type":"NRID","@value":"9000290131563"},{"@type":"NRID","@value":"9000291605143"},{"@type":"NRID","@value":"9000258595981"},{"@type":"NRID","@value":"9000283911815"},{"@type":"NRID","@value":"9000291605148"},{"@type":"NRID","@value":"9000283123970"},{"@type":"RESEARCHMAP","@value":"https://researchmap.jp/HT007031"}],"foaf:name":[{"@value":"Takunori Harada"}],"jpcoar:affiliationName":[{"@value":"Department of Integrated Science and Technology, Faculty of Science and Technology, Oita University, Dannoharu,\r700, Oita City 870-1192, Japan"},{"@value":"Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1381131417913123713","@type":"Researcher","foaf:name":[{"@value":"Le Quang Phuong"}],"jpcoar:affiliationName":[{"@value":"Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1381131417913123715","@type":"Researcher","foaf:name":[{"@value":"Yoshihiko Kanemitsu"}],"jpcoar:affiliationName":[{"@value":"Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1381131417913123716","@type":"Researcher","foaf:name":[{"@value":"Tamaki Nakano"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"00249297"},{"@type":"EISSN","@value":"15205835"}],"prism:publicationName":[{"@value":"Macromolecules"}],"dc:publisher":[{"@value":"American Chemical Society (ACS)"}],"prism:publicationDate":"2018-08-27","prism:volume":"51","prism:number":"17","prism:startingPage":"6865","prism:endingPage":"6877"},"reviewed":"false","url":[{"@id":"https://pubs.acs.org/doi/pdf/10.1021/acs.macromol.8b01453"}],"createdAt":"2018-08-28","modifiedAt":"2023-04-26","project":[{"@id":"https://cir.nii.ac.jp/crid/1040000781998971776","@type":"Project","projectIdentifier":[{"@type":"KAKEN","@value":"18K05062"},{"@type":"JGN","@value":"JP18K05062"},{"@type":"URI","@value":"https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-18K05062/"}],"notation":[{"@language":"ja","@value":"２重変調方式による全偏光対応型キラリティ分光計開発"},{"@language":"en","@value":"Development of a dual-polarization-modulated comprehensive chiroptical spectrophotometer"}]}],"relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1050025031477853184","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["references"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Chirality induction using circularly polarized light into a branched oligofluorene derivative in the presence of an achiral aid molecule"}]},{"@id":"https://cir.nii.ac.jp/crid/1050306506455811712","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["references"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Photo-induced helix-helix transition of a polystyrene derivative"}]},{"@id":"https://cir.nii.ac.jp/crid/1050307501845294976","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"The Use of Ni(cod)(dq) (COD: 1,5-Cyclooctadiene; 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We thank the Nobel Foundation, Stockholm, for permission to print this lecture."}]},{"@id":"https://cir.nii.ac.jp/crid/1363670321053769984","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Photoinduced Motions in Azobenzene‐Based Amorphous Polymers: Possible Photonic Devices"}]},{"@id":"https://cir.nii.ac.jp/crid/1363951793170874752","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Induction of a Preferred Twist in a Biphenyl Core by Stereogenic Centers: A Novel Approach to the Absolute Configuration of 1,2- and 1,3-Diols"}]},{"@id":"https://cir.nii.ac.jp/crid/1363951793778944512","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Switching a Helical Polymer between Mirror Images Using Circularly Polarized Light"}]},{"@id":"https://cir.nii.ac.jp/crid/1363951794774836480","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"The Mark–Houwink–Sakurada Equation for the Viscosity of Atactic Polystyrene"}]},{"@id":"https://cir.nii.ac.jp/crid/1363951794791772544","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Helical Polymers: Synthesis, Structures, and Functions"}]},{"@id":"https://cir.nii.ac.jp/crid/1363951794944359936","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Asymmetric autocatalysis and amplification of enantiomeric excess of a chiral molecule"}]},{"@id":"https://cir.nii.ac.jp/crid/1363951795575771776","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Asymmetric Catalysis: Science and Opportunities (Nobel Lecture) Copyright© The Nobel Foundation 2002. 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