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A large turn-on effect in the form of a notable photoluminescence (PL) enhancement was observed for an oligo(ethylene glycol)-appended CdS cluster molecule with a Cd10S16 core upon mixing with CuI in water (see graphic). Analysis by the Job method and size-exclusion chromatography suggested that the turn-on response, which was found to be specific for CuI, is associated with the formation of a CuI-containing multicluster network.
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Konishi et al. (2006) studied this question.
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