Abstract
A variety of push–pull-chromophore–[60]fullerene conjugates connected with different spacers was successfully synthesized by applying “click chemistry” to the corresponding acetylene-appended fullerene precursors. Direct connection of the fullerene cages to push–pull motifs gives rise to ground state electronic interactions, which were characterized by electrochemical studies. On the other hand, when the two moieties were linked through pyrrolidine rings, no interactions occurred between the C60 units and the push–pull motifs in the ground states. Instead, an electron transfer proceeded upon light exitation, giving the charge-separated states, which was corroborated by time-resolved transient absorption measurements.
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