Emission of a single conjugated polymer chain isolated in its single crystal monomer matrix.
The excitonic luminescence of a highly ordered single conjugated polymer chain is studied by microphotoluminescence. At T< or =10 K it consists of a single Lorentzian line. The linewidth increases linearly with T between 6 and 60 K, from 350 microeV at 6 K, indicating a pure dephasing time of approximately 2 ps. Above 10 K, other neighboring regions along the chain direction start to emit at a slightly higher (by approximately 1 meV) energy. This indicates very small inhomogeneous broadening, very long chains ( > or =10 microm), and a long range and very rapid exciton energy transfer ( >10 microm in <100 ps).
Guillet
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Groupe de Physique des Solides, UMR 7588 of CNRS, Universités Paris 6 and Paris 7, Tour 23, 2 Place Jussieu, 75251 Paris Cedex 05, France.
Berréhar
J
J
Grousson
R
R
Kovensky
J
J
Lapersonne-Meyer
C
C
Schott
M
M
Voliotis
V
V