Molecular decoding using luminescence from an entangled porous framework

Yohei Takashima, Virginia Martínez Martínez, Shuhei Furukawa (), Mio Kondo, Satoru Shimomura, Hiromitsu Uehara, Masashi Nakahama, Kunihisa Sugimoto and Susumu Kitagawa ()
Additional contact information
Yohei Takashima: ERATO Kitagawa Integrated Pores Project, Japan Science and Technology Agency (JST), Kyoto Research Park Building no. 3, Shimogyo-ku, Kyoto 600-8815, Japan.
Virginia Martínez Martínez: Universidad del País Vasco UPV/EHU, Apartado 644
Shuhei Furukawa: ERATO Kitagawa Integrated Pores Project, Japan Science and Technology Agency (JST), Kyoto Research Park Building no. 3, Shimogyo-ku, Kyoto 600-8815, Japan.
Mio Kondo: Institute for Integrated Cell-Material Sciences, Kyoto University, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan.
Satoru Shimomura: Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan.
Hiromitsu Uehara: ERATO Kitagawa Integrated Pores Project, Japan Science and Technology Agency (JST), Kyoto Research Park Building no. 3, Shimogyo-ku, Kyoto 600-8815, Japan.
Masashi Nakahama: ERATO Kitagawa Integrated Pores Project, Japan Science and Technology Agency (JST), Kyoto Research Park Building no. 3, Shimogyo-ku, Kyoto 600-8815, Japan.
Kunihisa Sugimoto: X-ray Research Laboratory, Rigaku Co. Ltd, 3-9-12 Matsubara-cho, Akishima, Tokyo 196-8666, Japan.
Susumu Kitagawa: ERATO Kitagawa Integrated Pores Project, Japan Science and Technology Agency (JST), Kyoto Research Park Building no. 3, Shimogyo-ku, Kyoto 600-8815, Japan.

Nature Communications, 2011, vol. 2, issue 1, 1-8

Abstract: Abstract 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.

Date: 2011
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DOI: 10.1038/ncomms1170

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