Abstract
Complexation between oppositely charged unsubstituted and substituted alkylbenzyldimethylammonium chlorides (ABDAC) and bischromones and indigo carmine, has been investigated by automated conductimetric titration procedures to examine whether such systems are suitable for study as models of 2:1 interactions between large organic ions of opposite electrical charge. Results indicate that for the bischromone-ABDAC system complex coacervate formation takes place, whereas for the indigo carmine-ABDAC system complex interaction is affected by interfering flocculation effects. The complexation has been characterized by the 2:1 stoichiometric solubility product, K s ′. Relationship between ABDAC surface activities and K s ′ values have been found to exist suggesting that ion interaction is reinforced by hydrophobic interactions.
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