Title: Single-molecule spectroscopic investigation of energy migration processes in cyclic porphyrin arrays
Authors: Park, Mira ×
Yoon, Min-Chul
Yoon, Zin Seok
Hori, Takaaki
Peng, Xiaobin
Aratani, Naoki
Hotta, Jun-ichi
Uji-I, Hiroshi
SLIWA, Michel
Hofkens, Johan
Osuka, Atsuhiro
Kim, Dongho #
Issue Date: Mar-2007
Publisher: American Chemical Society
Series Title: Journal of the American Chemical Society vol:129 issue:12 pages:3539-3544
Abstract: Covalently linked cyclic porphyrin arrays have been synthesized to mimic natural light-harvesting apparatuses and to investigate the highly efficient energy migration processes occurring in these systems for future applications in molecular photonics. To avoid an ensemble-averaged picture, we performed a single-molecule spectroscopic study on the energy migration processes of cyclic porphyrin arrays and a linear model compound embedded in a rigid polymer matrix by recording fluorescence intensity trajectories, by performing coincidence measurements, and by doing wide-field defocused imaging. Our study demonstrates efficient energy migration within the cyclic porphyrin arrays at the single-molecule level. By comparison with the data of the linear model compound, we could pinpoint the role of the dipole-dipole coupling between diporphyrin subunits and the rigidity of the cyclic structures on the energy transfer processes.
ISSN: 0002-7863
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Molecular Imaging and Photonics
× corresponding author
# (joint) last author

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