The anisotropy in semiconductor nanoplatelets (NPLs) is reflected in the anisotropy of their crystal structure and organic ligand shell, which can be used for creating new semiconductor heterostructures. This work demonstrates the synthesis of core/shell NPLs containing zero-dimensional (0D) Cd x Hg1–x Se domains embedded in CdSe NPLs via cation exchange. The strategy is based on the different accessibility of definite regions of the NPLs for incoming cations upon time-limited reaction conditions. The obtained heterostructures were successfully overcoated with a Cd y Zn1–y S shell preserving their two-dimensional (2D) morphology. The NPLs exhibit bright photoluminescence in the range of 700–1100 nm with quantum yields up to 55%, thus making them a prospective material for light-emitting applications in the near-infrared spectral range.

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Arsenic pollution in ground and drinking water is one of the major problems worldwide due to the natural abundance of arsenic by dissolution from ground sediments or mining activities as...

Up to 5 μm large ca. 5 nm thick PbSe, HgSe, SnCuSe, ZnCuSe, and Cu–Zn–Sn–Se nanosheets (NSs) were synthesized via cation exchange starting from CuSe NSs, offering a universal platform for the synthesis of other metal selenide 2D nanomaterials.

Continuous advancements in science and technology in the field of flexible devices encourage researchers to dedicate themselves to seeking candidates for new flexible transparent conductive films (FTCFs). Our recently developed two-dimensional (2D) metal aerogels are considered as a new class of FTCFs. Here, we describe a new large-scale self-assembly synthesis of bimetallic Pt–Ni 2D metal aerogels with controllable morphology during the synthesis. The obtained 2D aerogels require only a low quantity of precursors for the synthesis of percolating nanoscale networks with areas of up to 6 cm2 without the need of an additional drying step. Stacks of the obtained monolayer structures display low sheet resistances (down to 270 Ω/sq), while decreasing the optical transparency. In perspective, the 2D bimetallic Pt–Ni aerogels not only enrich the structural diversity of metal aerogels but also bring forth new materials for further applications in flexible electronics and electrocatalysis with reduced costs of production.