Time resolved structural dynamics of butadiyne-linked porphyrin dimers

Structural Dynamics
Franco V A CamargoIsmael A Heisler

Abstract

In this work, the timescales and mechanisms associated with the structural dynamics of butadiyne-linked porphyrin dimers are investigated through time resolved narrowband pump/broadband probe transient absorption spectroscopy. Our results confirm previous findings that the broadening is partly due to a distribution of structures with different (dihedral) angular conformations. Comparison of measurements with excitations on the red and blue sides of the Q-band unravel the ground and excited state conformational re-equilibration timescales. Further comparison to a planarized dimer, through the addition of a ligand, provides conclusive evidence for the twisting motion performed by the porphyrin dimer in solution.

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Citations

Jul 14, 2016·Inorganic Chemistry·Mitsuhiko MorisueJoji Ohshita
Dec 1, 2017·Physical Chemistry Chemical Physics : PCCP·Patrycja KowalskaJacek Waluk
Jul 2, 2021·Physical Chemistry Chemical Physics : PCCP·Arnab GhoshAmitava Patra
Jul 24, 2021·The Journal of Chemical Physics·Lars MewesMajed Chergui

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