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. 2014 Sep 4;3(5):172–176. doi: 10.1002/open.201402019

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© 2014 The Authors. Published by Wiley-VCH Verlag GmbH & Co. KGaA.

This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.

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Changes in the emission spectra of 1 (100 μm) in acetonitrile (0.1 m nBu₄NPF₆) upon addition of nBu₄NCl (top) and nBu₄NBr (bottom). Insets: plot of relative emission intensity at 667 nm against various concentrations of Cl⁻ and Br⁻ ions and their theoretical fit for 1:1 binding stoichiometry.