Supporting information for: Impact of porosity on hydrocarbon transport in shales’ organic matter at molecular scale Ama¨ el Obliger, †,‡ Franz-Josef Ulm, †,‡ and Roland Pellenq ∗,†,‡,¶ †MultiScale Materials Science for Energy and Environment (MSE 2 ), The joint CNRS-MIT Laboratory, UMI CNRS 3466, Massachusetts Institute of Technology, Cambridge 02139 MA, USA ‡Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge 02139 MA, USA ¶CINaM-Aix Marseille Universit´ e-CNRS, Campus de Luminy, 13288 Marseille cedex 09, France E-mail: amael.obliger@gmail.com 1