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Novel D-pi -A chromophores based on the fulvene accepting moiety and p-dime
thylamino phenyl and 1,3-dithiole-2-ylidene donor moieties have been prepar
ed. The X-ray structures of two representative derivatives have been determ
ined. Examination of the UV-visible spectra and cyclic voltamperometry data
revealed remarkable sensitivity of the electronic structure of these deriv
atives to substituents at the cyclopentadiene ring.