Excitation energy migration processes in cyclic porphyrin arrays probed by single molecule spectroscopy

Journal of the American Chemical Society
Jaesung YangDongho Kim

Abstract

By using single molecule fluorescence spectroscopy we have investigated the excitation energy migration processes occurring in a series of cyclic porphyrin arrays bearing a close proximity in overall architectures to the LH2 complexes in purple bacterial photosynthetic systems. We have revealed that the conformational heterogeneity induced by the structural flexibility in large cyclic porphyrin arrays, which provides the nonradiative deactivation channels as an energy sink or trap, reduces significantly the energy migration efficiency. Our study provides detailed information on the energy migration efficiency of the artificial light-harvesting arrays at the single molecule level, which will be a guideline for future applications in single molecular photonic devices in the solid state.

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Citations

Aug 26, 2011·Chemical Reviews·Rajesh ChakrabartyPeter J Stang
Jul 4, 2012·Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences·Jaesung Yang, Dongho Kim
Feb 24, 2011·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Eduard FronTom Vosch
Jun 30, 2012·Chemistry : a European Journal·Arun Kumar BarPartha Sarathi Mukherjee
Aug 14, 2012·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Suzana M AndradeSílvia M B Costa
Jan 13, 2009·Journal of the American Chemical Society·Hyejin YooDongho Kim
Oct 22, 2009·Accounts of Chemical Research·Naoki ArataniAtsuhiro Osuka
Feb 24, 2015·The Journal of Physical Chemistry. B·Jaesung YangDongho Kim
Apr 27, 2018·The Journal of Physical Chemistry. B·Sang Hyeon LeeDongho Kim
Jun 17, 2015·The Journal of Organic Chemistry·Elodie Heyer, Raymond Ziessel
Jul 10, 2019·The Journal of Physical Chemistry Letters·Sang Hyeon LeeDongho Kim

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