Following our synthetic papers on the the synthesis of porphyrin N‑ and dithiaporphyrin S‑oxides (Banerjee, S.; Zeller, M.; Brückner, C. ‘MTO/H₂O₂/Pyrazole-Mediated N-Oxidation of meso-Tetraarylporphyrins and –chlorins, and S-Oxidation of meso-Tetraaryldithiaporphyrin and ‑chlorin’ J. Org. Chem. 2009, 74, 4283–4288.), this theoretical paper illuminates the origin of the optical properties of these compounds. Bruhn, T.; Brückner, C. ‘Origin of the Absorption Spectra of Porphyrin N‑ and Dithiaporphyrin S‑Oxides in their Neutral and Protonated States’ Phys. Chem. Chem. Phys. 2015, 17, 3560–3569. DOI: 10.1039/c4cp04675g

A follow-up of our communication (Akhigbe, J.; Zeller, M.; Brückner, C. ‘Quinoline-annulated Porphyrins’ Org. Lett. 2011, 13, 1322–1325.), this full paper describes the synthesis, structures, and optical properties of the quinoline-annulated porphyrins, π-extended porphyrins with particularly long wavelengths absorption spectra. Akhigbe, J.; Luciano, M.; Zeller, M.; Brückner, C. ‘Mono- and Bisquinoline-annulated Porphyrins from Porphyrin β,β’-Dione Oximes’ J. Org. Chem. 2015, 80, 499–511. DOI: 10.1021/jo502511j

Congratulations to Mike’s first paper from our group!

A further development for porpholactone-based high pH sensors: They have become water-soluble and can be incorporated into Nation membranes. Worlinsky, J. L.; Halepas, S.; Ghandehari, M.; Khalil, G.; Brückner, C. ‘Oxazolochlorins 15. High pH Sensing with Water-soluble Porpholactone Derivatives and their Incorporation into a Nafion® Optode Membrane’ Analyst 2015, 140, 190–196. DOI: 10.1039/c4an01462f

The paper was selected as HOT article and discussed on the Analyst Blog: http://blogs.rsc.org/an/