| Abstract
| - Intramolecular electron transfer is observed for two new substituted tetrathiafulvalene (TTF)−quinone dyads 1 and 2 in the presence of metal ions. On the basis of the electrochemical studies of referencecompound 5 and the comparative studies with dyad 3, it was proposed that the synergic coordination ofthe radical anion of quinone and the oligoethylene glycol chain with metal ions may be responsible forstabilizing the charge-separation state and thus facilitating the electron-transfer process. Most interestingly,the intramolecular electron-transfer processes within these two dyads can be modulated by UV−vis lightirradiation in the presence of spiropyran, by taking advantage of its unique properties.
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