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タイトル: | Facile strategy for obtaining luminescent polymorphs based on the chirality of a boron-fused azomethine complex |
著者: | Ohtani, Shunsuke https://orcid.org/0000-0002-8669-1089 (unconfirmed) Takeda, Yusuke Gon, Masayuki https://orcid.org/0000-0002-5540-5908 (unconfirmed) Tanaka, Kazuo https://orcid.org/0000-0001-6571-7086 (unconfirmed) Chujo, Yoshiki |
著者名の別形: | 大谷, 俊介 権, 正行 田中, 一生 中條, 善樹 |
発行日: | 18-Dec-2020 |
出版者: | Royal Society of Chemistry |
誌名: | Chemical Communications |
巻: | 56 |
号: | 97 |
開始ページ: | 15305 |
終了ページ: | 15308 |
抄録: | A chloro-substituted boron-fused azomethine complex (BAmCl) having a stereogenic boron center was synthesized for obtaining a luminescent chiral crystal. We succeeded in isolating the (R)- and (S)-enantiomers of BAmCl and preparing the homochiral polymorphic crystal, while we obtained the racemic crystal with rac-BAmCl. Single crystal X-ray diffraction analyses suggest that a variety of intermolecular interaction patterns and intrinsic flexibility of the molecular framework should play a significant role in stabilizing the homochiral crystal. We found the difference in molecular arrangements between the racemic and the homochiral crystals, and we observed distinctly different emission colors. In particular, we observed heat-initiated homogeneous racemization without the need for a solvent or catalyst in the molten state of the homochiral crystal (R)-BAmCl. Our results mean that chiral resolution of a flexible fused-skeleton having a stereogenic boron center can be a platform for creating luminescent polymorphic materials. |
著作権等: | This is the accepted manuscript of the article, which has been published in final form at https://doi.org/10.1039/d0cc06383e. The full-text file will be made open to the public on 20 November 2021 in accordance with publisher's 'Terms and Conditions for Self-Archiving'. この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。 This is not the published version. Please cite only the published version. |
URI: | http://hdl.handle.net/2433/260850 |
DOI(出版社版): | 10.1039/d0cc06383e |
PubMed ID: | 33216068 |
出現コレクション: | 学術雑誌掲載論文等 |
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