S1 Unexpected Evolution of Optical Properties in Ir-Pt Complexes Upon Repeat Unit Increase: Towards an Understanding of the Photophysical Behaviour of Organometallic Polymers Ahmed M. Soliman, Daniel Fortin, Eli Zysman-Colman* and Pierre D. Harvey* Département de chimie, Université de Sherbrooke, 2500 Boul. Université, Sherbrooke, QC, J1K 2R1 Pierre.Harvey@usherbrooke.ca ; Eli.Zysman-Colman@usherbrooke.ca SUPPORTING INFORMATION Table of Contents: Pages Experimental section S2-S6 Absorption and emission spectra of individual complexes S7-S10 Excitation and absorption at 77K S11 Spectroscopic and photophysical data of 1, 2, 3, 6 and 7 in 2-MeTHF S12 Cyclic voltammograms for 4, 2, 3, 7 and 6 S13 Energy and composition of TD-DFT calculated transitions for 7 S14 1 H, 13 C and 31 P NMR spectra of 7 and 11 S15-S20 References S21 Electronic Supplementary Material (ESI) for Chemical Communications This journal is © The Royal Society of Chemistry 2012