Abstract
A quantum chemical semiempirical investigation of electron-vibrational dynamics of photoexcited conjugated polyfluorenes shows that delocalized electronic excitations dominate the absorption, whereas chemical defects (if present) dramatically impact the emission by trapping the photogenerated exciton into a localized state and acting as guest emitters at recombination. These results offer theoretical insight into the effect of non-quenching defect sites in conjugated polymers and explain the origin of a controversial low energy emission band frequently observed in bulk polyfluorene samples.
| Original language | English |
|---|---|
| Pages (from-to) | 403-408 |
| Number of pages | 6 |
| Journal | Chemical Physics Letters |
| Volume | 372 |
| Issue number | 3-4 |
| DOIs | |
| State | Published - Apr 29 2003 |
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