Volume 2, 2023

An electrochemiluminescent sensor based on hydrophilic CsPbBr3/TDPA nanocrystals for sensitive detection of nitrobenzene

Abstract

The extreme sensitivity of perovskite nanoparticles to water has seriously hindered their application. At present, all inorganic perovskite nanocrystals (NCs) have received extensive attention due to their excellent photoelectric properties. A highly hydrophilic composite CsPbBr3/TDPA NCs was synthesized in the presence of oleylamine molecules, which greatly enhanced its water stability. The electrochemiluminescence (ECL) intensity and stability of the composites are much higher than those of single CsPbBr3 quantum dots (QDs). For the first time, we have developed a sensor for the specific detection of nitrobenzene using the ECL method. It was found that nitrobenzene could significantly enhance the ECL signal of CsPbBr3/TDPA NCs. The ECL sensor showed a good linear relationship with the concentration of nitrobenzene in the range of 1 mM to 0.1 μM, and the detection limit was as low as 0.05 μM (S/N = 3). This work provides a new idea for the development of nitrobenzene ECL sensors.

Graphical abstract: An electrochemiluminescent sensor based on hydrophilic CsPbBr3/TDPA nanocrystals for sensitive detection of nitrobenzene

Article information

Article type
Paper
Submitted
06 Jan 2023
Accepted
07 Feb 2023
First published
09 Feb 2023
This article is Open Access
Creative Commons BY-NC license

Sens. Diagn., 2023,2, 445-456

An electrochemiluminescent sensor based on hydrophilic CsPbBr3/TDPA nanocrystals for sensitive detection of nitrobenzene

W. Zhang, J. Chen, X. Liu, C. Mao and B. Jin, Sens. Diagn., 2023, 2, 445 DOI: 10.1039/D3SD00007A

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