4.4 Article

Novel squaraine signalling Zn(II) ions: three-state fluorescence response to a single input

Journal

TETRAHEDRON LETTERS
Volume 41, Issue 19, Pages 3721-3724

Publisher

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0040-4039(00)00474-3

Keywords

fluorescence; dyes; indolines/indolinones; molecular devices

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A novel metal ion sensitive 2,3,3-trimethyl-3H-indole-derived squaraine dye showing different fluorescence responses depending on the complexation stoichiometry has been synthesized. Thus, three levels of signals are attainable by varying the Zn(II) ion concentration. (C) 2000 Elsevier Science Ltd. All rights reserved.

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