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Hierarchical Equations of Motion Simulation of Temperature‐Dependent Two‐Dimensional Electronic Spectroscopy of the Chlorophyll a Manifold in LHCII
Authors:Xuan Leng  Thanh Nhut Do  Parveen Akhtar  Hoang Long Nguyen  Petar H Lambrev  Howe‐Siang Tan
Abstract:We simulated two‐dimensional electronic spectra (2DES) of the chlorophyll a manifold of light‐harvesting complex II (LHCII) at various temperatures (77, 110, 150, 190, 230, 273, and 293 K) using the hierarchical equations of the motion‐phase matching approach. We confirm the main excitation energy transfer pathways assignments within the chlorophyll a manifold of LHCII measured in a recent work (J. Phys. Chem. B 2019, 123, 6765–6775). The calculated transfer rates are also in general agreement with the measured rates. We also provided theoretical confirmation for the experimental assignments, as uphill and downhill energy transfer processes, of 2D spectral features that were reported in recent experimental reports. These temperature‐dependent features were also ascertained to follow the detailed‐balance principle.
Keywords:Light-harvesting complexes  Excitation energy transfer  Multidimensional spectroscopy  HEOM-PMA
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