Supplementary Material (ESI) for Soft Matter This journal is (c) The Royal Society of Chemistry 2009 Supporting Information Target-Selective Vesicle Fusion System with pH-Selectivity and Responsiveness Ayumi Kashiwada,* a Mana Tsuboi, a Toshihisa Mizuno, b Takeshi Nagasaki, c and Kiyomi Matsuda a a Department of Applied Molecular Chemistry College of Industrial Technology, Nihon University, Narashino, Chiba 275-8575, Japan. b Department of Materials Science and Engineering, Graduate School of Engineering, Nagoya Institute of Technology, Showa-ku, Nagoya 466-8555, Japan. c Department of Applied and Bioapplied Chemistry, Graduate School of Engineering, Osaka City University, Sumiyoshi-ku, Osaka 588-8585, Japan. E-mail: kashiwada.ayumi@nihon-u.ac.jp Contents: · Synthesis of Compound III as the raw material for Compound 1 · Spectral data of Compound 1 · Supporting figures