pH or CuII concentration can be used to tune the supramolecular structure obtained by self‐assembly of the amphiphilic gluconamide 1. Vesicles form at pH 4.5, whereas fibers and hollow tubuli are generated at pH 8.5; in the presence of CuII ions, helices are produced. (Figure Presented.) Copyright © 1994 by VCH Verlagsgesellschaft mbH, Germany