The European-Winter School on Physical Organic Chemistry (E-WiSPOC), at its fifth edition, constitutes an unique opportunity to gain expertise in the field of Organic Chemistry. If you are interested in WHY and not only HOW chemical reactions proceed you MUST attend this School. If you consider Physical Organic Chemistry an obsolete discipline you are wrong: it is more alive than ever! The topic of 2012 is: Supramolecular Chemistry