Highly stable and water dispersible polymer-coated CsPbBr₃ nanocrystals for Cu-ion detection in water

Abstract

Recently, CsPbX3 (X= I, Br, Cl) nanocrystals (NCs) have shown huge potential in the fields of various optoelectronic applications. However, the NCs degrades very rapidly in presence of water and...

Sensing Utilities of Cesium Lead Halide Perovskites and Composites: A Comprehensive Review

“…Another critical issue in the use of CsPbX 3 (X = Cl, Br, and I) probes for metal ion detection, which requires more attention, is their stability in aquatic environments. To solve the stability issues, using polymer and ligand capping/coating on CsPbX 3 has been proposed [ 83 , 84 , 86 , 89 , 90 ], which may enhance the PLQY by avoiding surface exposure to environmental forces existing in water and air. However, whether this approach can be effective in exposure to Cu 2+ in an aquatic environment remains an open question.…”

Understanding the charge transfer mechanism in CsPbBr3 nanocrystals and nitrogen-doped carbon quantum dot heterostructures: effect of nanocrystal encapsulation

“…PVP encapsulation around CPB@OA NCs PVP-coated Zn-doped CsPbBr 3 NCs were synthesized by the modied LARP method under room temperature. 37 The nal precursor was arranged by following the previous CPB@OA NCs synthesis process. Finally, the PVP solution (20 mg PVP dissolved in 500 mL of ethanol) was added to 20 mL of toluene in a round bottom ask.…”

CsPbX3 nanocrystals embedded in hollow AlO(OH) nanosheet assemblies towards highly bright flexible multicolor emitting films

“…The skeleton materials commonly used are some organic matrices, such as poly(methylmethacrylate) (PMMA),polyvinylpyrrolidone (PVP) polymer, metal-organic frameworks, such as zeolitic imidazolate frameworks-8 (ZIF-8), Zhejiang University-28 (ZJU-28), Cu 2+ ion-based metal-organic framework (Cu-MOF), and also some inorganic oxides, such as SiO 2 , AlO x , TiO 2 , etc. [24][25][26][27][28][29][30] Although the polymer matrix shows excellent water stability, the thermal stability improvement is not satisfactory. Inorganic substrate encapsulation has obvious advantages in improving the photothermal stability of CsPbX 3 .…”