Hydrogen-Bonding-Regulated Supramolecular Nanostructures and Impact on Multivalent Binding

摘要

Herein we describe the H-bonding-regulated nanostructure, thermodynamics, and multivalent binding of two bolaamphiphiles NDI-1 and NDI-2 consisting of a hydrophobic naphthalene diimide connected to a hydrophilic wedge by a H-bonding group and a glucose moiety on its two arms. NDI-1 and NDI-2 differ by the single H-bonding group, namely, hydrazide or amide, which triggers the formation of vesicles and cylindrical micelles, respectively. Although the extended H-bonding ensures stacking with head-to-head orientation and the formation of an array of the appended glucose moieties in both systems, the adaptive cylindrical structure exhibited superior multivalent binding with concanavalinA (ConA) to that of the vesicle. A control amphiphile lacking a H-bonding group assembled with a random lateral orientation to produce spherical micelles without any notable multivalent binding.