Abstract

Transition metal chalcogenides and pnictides are interesting in optoelectronics and catalysis. We present a generalized method to transform preformed metal oxide nanocrystals into sulfides, selenides, or phosphides via silylative deoxygenation with trimethylsilyl reagents. In all reactions studied, simultaneous decomposition of excess silyl reagent produces a protective, amorphous silica coating around the newly formed nanocrystals.

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