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Irradiation of a rigid donor–{6-bond-bridge}–acceptor dyad [donor = dimethoxynaphthalene (DMN); acceptor = dicyanovinyl (DCV)] occluded within the pores of mesoporous MCM-41 containing aluminium leads to the formation of the DCV radical anion of the dyad with a lifetime of days.
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Kuchi et al. (1999) studied this question.
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