Effect of electroactive ferrocene on the optical and electrochemical properties of
polythiophenes were examined. Thus the ferrocene unit were introduced into polythiophenes
by Grignard metathesis (GRIM) method to produce ferrocene substituted polythiophenes
(PThFc). These polymers were characterized by GPC, NMR, UV-Vis absorption spectrum,
and cyclic voltammogram (CV). The PThFc showed lower redox potential and reversible
electrochemical redox state due to the ferrocenyl functional group, as determined by the CV.
The absorption maxima of PThFc was 556 nm in the film state with a broad absorption band
covering from 350 nm to 650 nm. Fluorescence quenching efficiency of PL for the PThFc
containing films was determined as > 90%. The short-circuit current densities (Jsc) for the
cell containing PThFc was highly dependent on the thermal annealing process, indicating that
the photovoltaic properties could be optimized by the control of polymer structure. (PThFc).
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