Here, we report the first pair of structural isomers identified for colloidal nanocrystals which exhibit thermally-induced reversible transformations. The two isomers are CdS magic-size clusters (MSCs) exhibiting sharp absorption peaks at 311 nm and 322 nm. We show that their thermally-induced interconversions follow first-order unimolecular reaction kinetics. We anticipate that our findings on structural isomerism should stimulate attention towards solid-solid transformations and advanced design and synthesis of functional nanomaterials for a diversity of applications enabled by structural transformations.<br/>

Colloidal semiconductor CdS magic-size clusters: Thermally induced reversible structural isomerization

2019 Spring National Meeting

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