The suppression of inter-ring torsions in quaterthiophenes changes the deactivation path of the excited state leading to the reduction of non-radiative decay and increase of the photoluminescence quantum yield. Triplet transient absorption spectra are strongly affected by central inter-ring bridging, showing features which are tentatively related to different conformers.
Photoexcitations of bridged quaterthiophene in solution
BONGIOVANNI, GIOVANNI LUIGI CARLO;MURA, ANTONIO ANDREA;
1999-01-01
Abstract
The suppression of inter-ring torsions in quaterthiophenes changes the deactivation path of the excited state leading to the reduction of non-radiative decay and increase of the photoluminescence quantum yield. Triplet transient absorption spectra are strongly affected by central inter-ring bridging, showing features which are tentatively related to different conformers.
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