Report

Determinants of crystal structure transformation of ionic nanocrystals in cation exchange reactions

See allHide authors and affiliations

Science  16 Jul 2021:
Vol. 373, Issue 6552, pp. 332-337
DOI: 10.1126/science.abh2741

You are currently viewing the editor's summary.

View Full Text

Log in to view the full text

Log in through your institution

Log in through your institution

Shape and nanocrystal transformations

Cation exchange reactions that change the composition of a nanocrystal (NC) under mild conditions usually preserve the sublattice of the larger anions. Li et al. found that the shape of roxbyite (Cu1.8S) nanocrystals, which have a distorted, hexagonal, close-packed sulfide anion sublattice, affected the outcome of exchange reactions with cobalt ions. Flat nanoplates retained the anion lattice and formed cobalt sulfide, but tall nanorods transformed into Co9S8 nanocrystals with a cubic, close-packed structure. Facile crystal plane sliding in the taller nanocrystals appears to have driven the different layer stacking of sulfide anions.

Science, abh2741, this issue p. 332

View Full Text

Stay Connected to Science