Chemical transformation provides a simple and versatile route to inorganic nanostructures.Here we highlight the use of chemical transformation to convert trigonal selenium (t-Se) nanowires into a variety of metal chalcogenide nanostructures.As two case studies,single-crystal t-Se nanowires have been transformed into single-crystal Ag_2Se nanowires through a topotactic reaction and then into single-crystal CdSe nanowires via a cation-exchange reaction.
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