Dual-Protected Metal Halide Perovskite Nanosheets with an Enhanced Set of Stabilities

Yanjie He, Yachao Liang, Shuang Liang, Yeu Wei Harn, Zili Li, Mingyue Zhang, Dingfeng Shen, Zhiwei Li, Yan Yan, Xinchang Pang, Zhiqun Lin

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44 Scopus citations


Approaches to achieve stable perovskite nanocrystals (PNCs) of interest, in particular those with large structural anisotropy, through protective coating of the inorganic shell at a single-nanocrystal (NC) level are comparatively few and limited in scope. Reported here is a robust amphiphilic-diblock-copolymer-enabled strategy for crafting highly-stable anisotropic CsPbBr3 nanosheets (NSs) by in situ formation of a uniform inorganic shell (1st shielding) that is intimately ligated with hydrophobic polymers (2nd shielding). The dual-protected NSs display an array of remarkable stabilities (i.e., thermal, photostability, moisture, polar solvent, aliphatic amine, etc.) and find application in white-light-emitting diodes. In principle, by anchoring other multidentate amphiphilic polymer ligands on the surface of PNCs, followed by templated-growth of shell materials of interest, a rich variety of dual-shelled, multifunctional PNCs with markedly improved stabilities can be created for use in optics, optoelectronics, and sensory devices.

Original languageEnglish
Pages (from-to)7259-7266
Number of pages8
JournalAngewandte Chemie - International Edition
Issue number13
StatePublished - 22 Mar 2021

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  • block copolymers
  • materials science
  • nanostructures
  • perovskites
  • semiconductors


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