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. 2015 Jun 5;4(5):556–576. doi: 10.1002/open.201500088

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© 2015 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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Scheme 15 — An ammonium/triazolium-containing pH-sensitive muscle-like monomer for the synthesis of a metallosupramolecular polymer. Reagents and conditions: a) NaOH (aq)/CH₂Cl₂; b) 1) HCl/Et₂O, 2) NH₄PF₆.