Conformation of self-assembled porphyrin dimers in liposome vesicles by phase-modulation 2D fluorescence spectroscopy

  title={Conformation of self-assembled porphyrin dimers in liposome vesicles by phase-modulation 2D fluorescence spectroscopy},
  author={Geoffrey A. Lott and Alejandro Perdomo-Ortiz and James K. Utterback and Julia R. Widom and Al{\'a}n Aspuru-Guzik and Andrew H. Marcus},
  journal={Proceedings of the National Academy of Sciences},
  pages={16521 - 16526}
By applying a phase-modulation fluorescence approach to 2D electronic spectroscopy, we studied the conformation-dependent exciton coupling of a porphyrin dimer embedded in a phospholipid bilayer membrane. Our measurements specify the relative angle and separation between interacting electronic transition dipole moments and thus provide a detailed characterization of dimer conformation. Phase-modulation 2D fluorescence spectroscopy (PM-2D FS) produces 2D spectra with distinct optical features… 

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