Anup Rana, Leandro Cid Gomes, João S. Rodrigues, Dalia M. M. Yacout, Hugo Arrou-Vignod, Johan Sjölander, Nathalie Proos Vedin, Ouissam El Bakouri, Karin Stensjö, Peter Lindblad, Leena Andersson, Cecilia Sundberg, Mathias Berglund, Pia Lindberg* and Henrik Ottosson* published an article in Green Chemistry:
Belinda Pettersson Rimgard, Giovanny A. Parada, Laura F. Cotter, Sharon Hammes-Schiffer, James M. Mayer and Leif Hammarström published an article in Science: Proton-coupled energy transfer in molecular triads.
Abstract: We experimentally discovered and theoretically analyzed a photochemical mechanism, which we term proton-coupled energy transfer (PCEnT). A series of anthracene-phenol-pyridine triads formed a local excited anthracene state after light excitation at a wavelength of ~400 nanometers (nm), which led to fluorescence around 550 nm from the phenol-pyridine unit. Direct excitation of phenol-pyridine would have required ~330-nm light, but the coupled proton transfer within the phenol-pyridine unit lowered its excited-state energy so that it could accept excitation energy from anthracene. Singlet-singlet energy transfer thus occurred despite the lack of spectral overlap between the anthracene fluorescence and the phenol-pyridine absorption. Moreover, theoretical calculations indicated negligible charge transfer between the anthracene andphenol-pyridine units. We construe PCEnT as an elementary reaction of possible relevance to biological systems and future photonic devices.
Sicong Wang, Bin Cai and Haining Tian published an article in Angewandte Chemie:
Ashleigh T. Castner, Hao Su, Erik Svensson Grape, A. Ken Inge, Ben A. Johnson*, Mårten S. G. Ahlquist*, and Sascha Ott* published an article in Journal of the American Chemical Society:
March 2022: Marco Lorenzi, Pierre Ceccaldi, Patricia Rodríguez‑Maciá, HollyJayne Redman, Afridi Zamader, James A. Birrell, Livia S. Mészáros, and Gustav Berggren published an article in Journal of Biological Inorganic Chemistry: