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- W2083941399 abstract "Room temperature phosphorescence (RTP) of 2-bromonaphthalene (2-BN) in SDS micelles has been studied in the presence of variousv salt and surfactant concentrations and at various temperatures. RTP of 2-BN was easily observed in the rodlike micelles of SDS when the added sodium chloride exceeded a certain concentration. The phosphorescence intensity was found to increase sharply during the sphere-to-rod transition because of the tremendous increase in microviscosity. The intensity declined slightly at very high salt concentration, owing to the formation of flexible rods. At a given salt and surfactant concentration, the phosphorescence intensity decreased drastically with increasing temperature, probably because of the decreased aggregation number and microviscosity of the micelles. Moreover, a smaller value of the second cmc and a sharper sphere-to-rod transition were observed at higher temperatures. At a given salt concentration (above the second cmc) and temperature, the phosphorescence intensity increased steadily with increasing surfactant concentration and leveled off above a certain concentration of SDS. This study proposed a potential use of rodlike micelles as a convenient means of observing the RTP of luminophores with an intrinsic heavy atom. On the other hand, RTP of heavy-atom-containing luminophores may also be used as an alternative probe for detection of the sphere-to-rod transition of micelles." @default.
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- W2083941399 title "Room temperature phosphorescence of 2-bromonaphthalene in SDS rodlike micelles" @default.
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