A hydrophobic polymer stabilized CsPbBr3 sensor for environmental pollutant detection. (23rd December 2020)

• Record Type: Journal Article
• Authors: Deng, Pengyin; Wang, Wei; Liu, Xiqing; Wang, Liang; Yan, Yongsheng
• Is Part Of: New journal of chemistry. Volume 45:Number 2(2021)
• Page Start: 930
• Page End: 938
• Publication Date: 2020-12-23
• Subjects: Chemistry -- Periodicals; Chimie -- Périodiques; 540
• DOI: 10.1039/d0nj04498a
• Languages: English
• ISSNs: 1144-0546

Abstract

Abstract : The detection of o -nitrophenol in the environment is of great significance to environmental protection. Abstract : The detection of o -nitrophenol in the environment is of great significance to environmental protection. In this paper, the fluorescence sensor of CsPbBr3 @SHFW was synthesized by an ultrasonic assisted method using perovskite quantum dots as the fluorescence source and a super hydrophobic porous organic polymer framework (SHFW) as the protective layer. Then CsPbBr3 @SHFW was used to detect o -nitrophenol in dichloromethane. Under the optimum conditions, the detection limit of CsPbBr3 @SHFW was 7.69 × 10 −3 μM, and the linear range was 0–280 μM. It was also proved that the fluorescence quenching of this work is electron transfer. This work provided help for the construction of a stable perovskite quantum dot sensor and the application of a perovskite quantum dot sensor in the field of fluorescence detection.