English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

International audienceUltrathin two-dimensional (2D) nanomaterials have attracted intense research efforts due to their extraordinary optoelectronic properties. However, the nucleation and growth mechanisms of 2D colloidal nanosheets are still poorly understood. Here, we follow the formation of ultrathin colloidal Cu2-xS nanosheets by in situ small-angle X-ray scattering. While thermal decomposition of copper-dodecanethiolates produces spheroidal Cu2-xS nano crystals, the addition of chloride to the reaction mixture results in 2 nm thick Cu2-xS nanosheets with well-defined shape and size. Our results show that chloride stabilizes stacks of lamellar copper thiolate supramolecular complexes, so that: they remain intact beyond the onset of Cu2-xS nucleation at 230 degrees C, leading to 2D-constrained stack-templated nucleation and growth. The face-to-face stacking of the nanosheets reinforces the 2D constraints imposed by the lamellar soft template, since it prevents internanosheet mass transport and nanosheet coalescence, thereby inhibiting growth in the thickness direction and allowing only for lateral growth. Our work thus provides novel insights into soft-templating formation mechanisms of ultrathin colloidal nanosheets, which may be exploited for other metal sulfide composition

In Situ Probing of Stack-Templated Growth of Ultrathin Cu2–xS Nanosheets

In Situ Probing of Stack-Templated Growth of Ultrathin Cu_2–xS Nanosheets