Fig. 4. (top) Two-step formation of the heteroternary Q8·MV·HN complex with equilibrium association constant (Ka) values (M−1) shown over the arrows (10 mM sodium phosphate, pH 7.0, 300 K).30 (bottom left) UV-visible absorption and emission (inset) spectra of HN (dashed line), a 1 : 1 mixture of HN and MV (dotted line), and a 1 : 1 : 1 mixture of Q8, HN, and MV (solid line). (bottom right) Structure of the Q8·MV·HN complex modeled from the crystal structure of an analogue. CCDC ID 154114.28 Adapted with permission from ref. 28. © 2001 Wiley-VCH Verlag GmbH, Weinheim, Fed. Rep. of Germany.
