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Issue 27-28, 2005
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Designing ratiometric fluorescent sensors for alkali metal ions from simple PET sensors by controlling spacer length

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Abstract

Sensing of alkali metal ions has attracted considerable interest owing to the significance of these metal ions in biology. Of the many mechanisms used for ion signaling, photoinduced electron transfer (PET) is the one most commonly exploited. We report the use of simple PET sensors as a ratiometric sensor towards alkali metal ions. The systems described here behave either as a simple PET sensor or as a ratiometric sensor towards alkali metal ions based on the length of the spacer that connects the donor and acceptor groups. The formation of an exciplex between the donor and acceptor groups in the metal ion free state and the changes of the monomer and the exciplex emissions on metal ion binding are utilized for the ratiometric signaling of alkali metal ions.

Graphical abstract: Designing ratiometric fluorescent sensors for alkali metal ions from simple PET sensors by controlling spacer length

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Publication details

The article was received on 20 Jan 2005, accepted on 24 Feb 2005 and first published on 10 Mar 2005


Article type: Paper
DOI: 10.1039/B500958H
Citation: J. Mater. Chem., 2005,15, 2755-2761
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    Designing ratiometric fluorescent sensors for alkali metal ions from simple PET sensors by controlling spacer length

    N. B. Sankaran, S. Nishizawa, M. Watanabe, T. Uchida and N. Teramae, J. Mater. Chem., 2005, 15, 2755
    DOI: 10.1039/B500958H

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