- 著者
-
Takashima Yohei
Martínez Virginia Martínez
Furukawa Shuhei
Kondo Mio
Shimomura Satoru
Uehara Hiromitsu
Nakahama Masashi
Sugimoto Kunihisa
Kitagawa Susumu
- 出版者
- Nature Publishing Group
- 雑誌
- Nature communications (ISSN:20411723)
- 巻号頁・発行日
- vol.2, no.1, 2011-01-25
- 被引用文献数
-
712
「ちえのわ」型ナノ細孔を用いたセンサー開発に成功: 動き、捕まえ、光って知らせるナノ多孔体. 京都大学プレスリリース. 2011-01-26.Chemosensors detect a single target molecule from among several molecules, but cannot differentiate targets from one another. In this study, we report a molecular decoding strategy in which a single host domain accommodates a class of molecules and distinguishes between them with a corresponding readout. We synthesized the decoding host by embedding naphthalenediimide into the scaffold of an entangled porous framework that exhibited structural dynamics due to the dislocation of two chemically non-interconnected frameworks. An intense turn-on emission was observed on incorporation of a class of aromatic compounds, and the resulting luminescent colour was dependent on the chemical substituent of the aromatic guest. This unprecedented chemoresponsive, multicolour luminescence originates from an enhanced naphthalenediimide-aromatic guest interaction because of the induced-fit structural transformation of the entangled framework. We demonstrate that the cooperative structural transition in mesoscopic crystal domains results in a nonlinear sensor response to the guest concentration.