Retinylidene Schiff-base protonation in surfactant-solubilized water pools in heptane
Abstract
All-trans-N-retinylidene-n-butylamine (4) and its 3-chloropropionic acid (CPA) protonated analogue (5) remained stable in sodium bis(2-ethylhexyl) sulphosuccinate, reversed-micelle-solubilized water pools in heptane, and the extent to which (4) protonated depended on the [CPA] to [(4)] ratio and on the amount of solubilized water; hence, this system mimicked the behaviour of rhodopsins.