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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/).
1D NOESY spectra of Q1 (red line) and the Q1−Cu(II) complex (blue line) and 1H NMR spectra (gray line) of Q1 in DMPC/DHPC bicelles. pH = 4. Q1 concentration was 1 mM.