Winning the three-legged race: Rapid self-organization of a tripodal aromatic dipeptide conjugate on a tris(2-amino-ethyl)amine scaffold leads to a vesicular morphology (upper image). The structures can trap a fluorescent dye (lower image) and release it upon acidification, suggesting the use of such stimuli-responsive materials as potential delivery vehicles. (Figure Presented). © 2007 Wiley-VCH Verlag GmbH & Co. KGaA.