Effect of bridge on energy transfer and photoinduced charge separation in perylene-diimide-naphthalene-bisimide-hexathiophene based donor-bridge-acceptor triads
1 Applied Science and Technology Graduate Group, University of California, Berkeley, Berkeley, California, 94720, USA
2 Department of Chemistry, University of California, Berkeley, Berkeley, California 94720, USA
3 Department of Chemical and Biomolecular Engineering, University of California, Berkeley, Berkeley, California 94720, USA
4 Physical Biosciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720, USA
5 The Molecular Foundry, Material Science Division, Lawrence Berkeley National Laboratory, Berkeley, California, 94720, USA
Femtosecond transient absorption spectroscopy is performed to assess bridge effects on energy transfer and charge separation in molecular junctions. A short, conjugated bridge can facilitate charge separation from both donor and acceptor, whereas in longer bridges charge separation only occurs from the excited donor.
© Owned by the authors, published by EDP Sciences, 2013
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