Helix Induction to Polyfluorenes Using Circularly Polarized Light: Chirality Amplification, Phase-Selective Induction, and Anisotropic Emission
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- Takunori Harada
- Department of Integrated Science and Technology, Faculty of Science and Technology, Oita University, Dannoharu, 700, Oita City 870-1192, Japan
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- Le Quang Phuong
- Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan
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- Yoshihiko Kanemitsu
- Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan
書誌事項
- 公開日
- 2018-08-27
- 資源種別
- journal article
- DOI
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- 10.1021/acs.macromol.8b01453
- 公開者
- American Chemical Society (ACS)
この論文をさがす
説明
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 ...
収録刊行物
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- Macromolecules
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Macromolecules 51 (17), 6865-6877, 2018-08-27
American Chemical Society (ACS)
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詳細情報 詳細情報について
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- CRID
- 1361131417913123712
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- ISSN
- 15205835
- 00249297
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- 資料種別
- journal article
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- データソース種別
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- Crossref
- KAKEN
- OpenAIRE
