Design of a Dual Sensing Highly Selective Cyanide Chemodosimeter Based on Pyridinium ring Chemistry Sabir H. Mashraqui *a , Rupesh Betkar a , Mukesh Chandiramani a , Carolina Estarellas b , Antonio Frontera b a Department of Chemistry, University of Mumbai, Vidyanagari, Santacruz-E, Mumbai-400 098, India, b Department of Quimica, Universitat de les Illes Balears, Spain sh_mashraqui@yahoo.com Contents 1) 1 H NMR of compound 4 S1 2) 13 C NMR of compound 4 S2 3) Mass spectrum of compound 4 S3 4) 1 H NMR of Quino-P S4 5) 13 C NMR of Quino-P S5 6) Mass spectrum of Quino-P S6 7) 13 C NMR of Quino-P + KCN S7 8) Competitive Fluorescence Experiment S8 9) Job’s plot S9 10) Limit of detection S10 11) D 2 O exchange and 1 H NMR studies S11-S13 12) Conformational analysis of Quino-P. S14 13) Reference S15 S0 Supplementary Material (ESI) for New Journal of Chemistry This journal is © The Royal Society of Chemistry and The Centre National de la Recherche Scientifique, 2010