Dresden 2020 – scientific programme
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 20: Molecular Electronics and Excited State Properties II
CPP 20.2: Talk
Monday, March 16, 2020, 15:15–15:30, ZEU 260
Understanding Ultrafast Proton transfer reaction in Molecular Crystals — •Hyein Hwang1,2, Vandana Tiwari1,2, Simon Bittmann1, Hong-Guang Duan1, Friedjof Tellkamp1, Ajay Jha1, and R. J. Dwayne Miller1,3 — 1MPSD, Hamburg, Germany — 2Department of Chemistry, University of Hamburg, Germany — 3Departments of Chemistry and Physics, University of Tornoto, Canada
Ultrafast proton transfer reactions is a topic of great interest particularly due to their association with the understanding of primary elementary reaction pathways in functional electrochemical and biological systems. Although these reactions have been extensively investigated in solution for the role of interaction between the solute and the solvent-bath, but the reaction dynamics in bulk single molecular crystals remains elusive. Here, we study ultrafast intramolecular proton transfer reaction in hydroxyanthraquinones in crystalline form, where molecular system forms the lattice. We use ultrafast transient absorption studies complemented with quantum chemistry calculations to reveal the role of spatial arrangement of the reactants within the lattice in reaction dynamics. Our work highlight the importance of intermolecular interactions guiding ultrafast dynamics in crystals.