SI1 Supporting Information for the paper Metal-free phthalocyanines bearing eight alkylsulfonyl substituents: design, synthesis, electronic structure and mesomorphism of new electron-deficient mesogens Benoît Tylleman, a Gabin Gbabode, a Claire Amato, a Claudine Buess-Herman, b Vincent Lemaur, c Jérôme Cornil, c Rafael Gómez Aspe, d Yves Henri Geerts,* a and Sergey Sergeyev* a a) Laboratory of Polymer Chemistry, Faculté des Sciences, Université Libre de Bruxelles (ULB), CP 206/1, Boulevard du Triomphe, 1050 Bruxelles, Belgium; e-mail ygeerts@ulb.ac.be; sserguee@ulb.ac.be b) Laboratory of Analytical and Interface Chemistry, Faculté des Sciences, Université Libre de Bruxelles (ULB), CP 255, Boulevard du Triomphe, 1050 Bruxelles, Belgium c) Laboratory for Chemistry of Novel Materials, University of Mons-Hainaut, Place du Parc 20, 7000 Mons, Belgium d) Department of Organic Chemistry, Universidad Complutense de Madrid, Avda. Complutense, 28040 Madrid, Spain Description of Supporting Information 1. Synthesis of thiols 4b,c: experimental procedures and analytical data 2. Synthesis of dinitrile 2a: experimental procedures and analytical data 3. Computational details 4. Electrochemical data 5. Additional powder XRD data: 5.1. Indexing of reflections for LC mesophases of 1a,c and 6b 5.2. High angle region (π-stacking distance) of the XRD patterns of 1a measured at room temperature before and after isotropisation. 5.3. XRD patterns of Col o , Col r1 and Col r2 phases of 1c. 6. MALDI-MS data for the attempted synthesis of 1a from 2a: