Supporting Information Light-Controlled Membrane Mechanics and Shape Transitions of Photoswitchable Lipid Vesicles Carla Pernpeintner †,§,# , James A. Frank ‡,# , Patrick Urban † , Christian R. Roeske † , Stefanie D. Pritzl † , Dirk Trauner ‡,§, *, and Theobald Lohmüller †,§, * † Photonics and Optoelectronics Group, Department of Physics and CeNS, Ludwig Maximilians University Munich, München, Amalienstrasse 54, 80799 Munich, Germany ‡ Department of Chemistry and Center for Integrated Protein Science, Ludwig Maximilians University Munich, Butenandtstraße 5-13, 81377 Munich, Germany § Nanosystems Initiative Munich, Schellingstraße 4, 80799 Munich, Germany 1. Supporting tables and figures 2. Supporting videos 3. Compound synthesis and characterization 4. Influence of temperature 5. References