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The synthesis of novel donor–π–acceptor dyads based on a pyrrolo-annelated tetrathiafulvalene unit is described. The linear and non-linear optical properties of these chromophores have been investigated, together with their redox properties. For a dyad containing a p-nitrophenyl acceptor group, a significant third-order optical non-linearity is observed.
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Hansen et al. (2004) studied this question.
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