Lamellar assembly of cadmium selenide nanoclusters into quantum belts

Yi-Hsin Liu, Fudong Wang, Yuanyuan Wang, Patrick C. Gibbons, William E. Buhro

Research output: Contribution to journalArticle

133 Citations (Scopus)

Abstract

Here, we elucidate a double-lamellar-template pathway for the formation of CdSe quantum belts. The lamellar templates form initially by dissolution of the CdX2 precursors in the n-octylamine solvent. Exposure of the precursor templates to selenourea at room temperature ultimately affords (CdSe)13 nanoclusters entrained within the double-lamellar templates. Upon heating, the nanoclusters are transformed to CdSe quantum belts having widths, lengths, and thicknesses that are predetermined by the dimensions within the templates. This template synthesis is responsible for the excellent optical properties exhibited by the quantum belts. We propose that the templated-growth pathway is responsible for the formation of the various flat, colloidal nanocrystals recently discovered, including nanoribbons, nanoplatelets, nanosheets, and nanodisks.

Original languageEnglish
Pages (from-to)17005-17013
Number of pages9
JournalJournal of the American Chemical Society
Volume133
Issue number42
DOIs
Publication statusPublished - 2011 Oct 26

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

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