Water-Soluble Stimuli-Responsive Vesicles from Peptide-Based Diblock Copolymers Financial support by the CNRS, MENRT, DAAD, Fonds der Chemischen Industrie, and the Deutsche Forschungsgemeinschaft (Emmy Noether Programm, KL1049/2) is gratefully acknowledged. S.L. and H.-A.K. are grateful to Dr. R. Borsali and Prof. K. Müllen, respectively, for their interest and support.