S1 Supporting Information to Synthesis of oligoarylacetylenes with defined conjugated sequences using tailor-made soluble polymer supports Roza Szweda, a Christophe Chendo, b Laurence Charles, b Paul N. W. Baxter, a * and Jean-François Lutz a * a Université de Strasbourg, CNRS, Institut Charles Sadron UPR22, 23 rue du Loess, 67034 Strasbourg Cedex 2, France. Email: baxter@unistra.fr, jflutz@unistra.fr. b Aix Marseille Univ, CNRS, Institut de Chimie Radicalaire, Marseille, France. Contents A. Materials ........................................................................................................................................ S2 B. Experimental Procedures ............................................................................................................... S2 B.1. Synthesis of the polystyrene soluble supports ....................................................................... S2 B.1.1. ATRP of styrene. ........................................................................................................... S2 B.1.2. Debromination ............................................................................................................... S3 B.1.3. TMS removal ................................................................................................................. S3 B.2. Stepwise synthesis of oligoarylacetylenes............................................................................. S3 B.2.4. General procedure for the Sonogashira coupling step ................................................... S3 B.2.5. General procedure for the protodesilylation step .......................................................... S4 B.2.6. Cleavage of the oligomers ............................................................................................. S4 C. Measurements and Analysis .......................................................................................................... S5 C.3. Nuclear Magnetic Resonance (NMR) ................................................................................... S5 C.4. Size Exclusion Chromatography (SEC) ................................................................................ S5 C.5. Fourier Transform Infrared Spectroscopy (FTIR) ................................................................. S5 C.6. UV-vis Spectroscopy ............................................................................................................. S5 C.7. Fluorescence Spectroscopy ................................................................................................... S5 C.8. Matrix-Assisted Laser Desorption/Ionization MALDI ......................................................... S5 C.9. Electrospray Ionization Mass Spectrometry (ESI-MS) ......................................................... S6 D. Additional Tables and Figures....................................................................................................... S7 E. References ................................................................................................................................... S23 Electronic Supplementary Material (ESI) for Chemical Communications. This journal is © The Royal Society of Chemistry 2017