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

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「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.