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Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
Study on the anion coordinating ability of macrocycle 15 protonated at all nitrogen atoms (cmacrocycle = 1 μM, λexcitation = 249 nm, filter = 350 nm cut-off, slit width = 15 nm) in acetonitrile-water medium.