Rapid detection of urine chloride enabled by ion exchange in hydrophilic lead halide perovskite nanocrystals

Abstract

The rapid and precise detection of chloride ions in biosystems is of great importance for clinic diagnostic. In this work, hydrophilic CsPbBr3 perovskite nanocrystals (PNCs) with a high photoluminescence (PL)...

Perovskite Nanocrystals: Superior Luminogens for Food Quality Detection Analysis

“…Some perovskite nanocrystals have distinctively catalytic activity, such as glucose oxidase-like activity, which could be used to construct all nanozymes cascade reactions for biosensing and lower their cost . Therefore, perovskite nanocrystals with excellent photoluminescent quantum yields, a wide absorption range, predominant charge transfer properties, a narrow full width at half-maximum, a broad and regulatable emission range enshrouding the entire visible region, and distinctive catalytic activities represented tremendous superiorities in biosensing fields. ,− To improve future food practices through perovskite nanocrystals, we have herewith conducted a comprehensive discussion about perovskite nanocrystal-based biosensors according to the types of biosensing methods and the superiorities of perovskite nanocrystals.…”

Precise Modulation of Stable 2D/3D Multidimensional (PEA)2PbBr4 Nanosheets via Post Cation Exchange

“…Metal halide perovskites have attracted considerable attention due to their outstanding optoelectronic properties, , such as high quantum yield, high carrier mobility, and precise bandgap control . These properties have led to their widespread applications in solar cells − and LED lighting − and sensing. − Compared to 3D (three-dimensional) perovskites, 2D Ruddlesden–Popper perovskites (RPP) have a unique internal structure where large organic cations act as interface between the layers . This organic–inorganic–organic alternating layered 2D structure effectively prevents the ingress of water and oxygen, significantly increasing the stability of the perovskite structure.…”