This paper presents the preparation of unique copper sulfide flakes in CTAB/n-C5H11OH/n-C6H14/water microemulsions under hydrothermal conditions at 130 °C. With the pre-addition of n-dodecanethiol to the microemulsions, much smaller hexagonal Cu2S nanodisks resulted, which self-assembled into a superlattice. The crystal phases, absorption properties, and morphologies were characterized. The formation mechanism of the unique crystals is also discussed.
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Zhang et al. (2003) studied this question.
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