| 論文名 |
A doubly alkynylpyrene-threaded [4]rotaxane that exhibits strong circularly polarized luminescence from the spatially restricted excimer. |
| 著者 |
Masahiko Inouye
Koichiro Hayashi
Yuki Yonenaga
Tatsuya Itou
Kazuhisa Fujimoto
Taka-aki Uchida
Munetaka Iwamura
Koichi Nozaki
|
| キーワード |
|
| 出版年月 |
1970年1月 |
| 発表先 |
Angew Chem Int Ed Engl. 2014 Dec 22;53(52):14392-6. doi: 10.1002/anie.201408193. Epub 2014 Oct 27. |
| WEBサイト |
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| 論文概要（和文） |
空間的に制限されたエキシマーからの強い円偏光ルミネセンスを示す二重アルキニルピレンネジ付き[4]ロタキサン |
| 論文概要（英文） |
The Sonogashira coupling of γ-CD-encapsulated alkynylpyrenes with terphenyl-type stopper molecules gave a doubly alkynylpyrene-threaded [4]rotaxane. The rotaxane showed only excimer emission, with a high fluorescence quantum yield of Φf =0.37, arising from the spatially restricted excimer within the cavity of the γ-CD. The excimer emission suffered little from self-quenching up to a concentration of 1.5×10(-5) M and was circularly polarized with a high glum value of -1.5×10(-2) . The strong circularly polarized luminescence may result from the two stacked pyrenes existing in the rotaxane in an asymmetrically twisted manner. |
