Ion exchange transformation of magic-sized clusters

Sarah L. White, Progna Banerjee, Indranath Chakraborty, Prashant K. Jain

Research output: Contribution to journalArticle

Abstract

Ultrasmall semiconductor clusters are exciting materials because of their molecularly precise structures and their unique optical spectra. "Magic-sized" CdSe clusters are transformed into their Cu2Se counterparts by means of ion exchange. We leverage the molecularly precise structure and high sensitivity of these clusters to investigate the mechanism of cation exchange. We optically identify a metastable intermediate in the solid-state transformation. Isolation and characterization of this intermediate provide insight into the dynamic structural rearrangement of the cationic sublattice in the course of cation exchange and the role of ligand passivation. Such understanding of the dynamics of ion exchange at the solid-liquid interface could help engineer improved materials for solid-state electrolytes and energy storage devices.

Original languageEnglish (US)
Pages (from-to)8391-8398
Number of pages8
JournalChemistry of Materials
Volume28
Issue number22
DOIs
StatePublished - Nov 22 2016

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Chemistry

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