Work from Dr Martin Paterson and PhD student Therese Bergendahl has been published in the 2012 special issue of Chemical Communications highlighting emerging investigators. This theoretical work showed how subtle changes to the core aromatic electronic structure of porphycene macrocycles can greatly enhance their two-photon absorption properties, which have high potential in optical photodynamic anti-cancer treatments. (DOI: 10.1039/C1CC14332H)