A highly-specific photoelectrochemical platform based on carbon nanodots and polymers functionalized organic-inorganic perovskite for cholesterol sensing
| Autor: | Minxia Song, Dangqin Jin, Xiaoya Hu, Yun Shu, Lu Chen, Jie Guan, Gaochao Fan, Qin Xu |
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| Rok vydání: | 2021 |
| Předmět: |
Titanium
chemistry.chemical_classification Detection limit Polymers Elution 010401 analytical chemistry Molecularly imprinted polymer Oxides 02 engineering and technology Polymer Calcium Compounds 021001 nanoscience & nanotechnology 01 natural sciences Polyvinylidene fluoride Carbon 0104 chemical sciences Analytical Chemistry Hexane chemistry.chemical_compound Cholesterol chemistry Chemical engineering Polymerization 0210 nano-technology Perovskite (structure) |
| Zdroj: | Talanta. 225:122050 |
| ISSN: | 0039-9140 |
| Popis: | Herein, we reported the introduction of carbon nanodots (CNDs) and polyvinylidene fluoride (PVDF) as additives into perovskite CH3NH3PbI3 through in situ synthesis to prepare PVDF-CH3NH3PbI3@CNDs composite, which demonstrated improved water tolerance and mechanical stability. The application of PVDF-CH3NH3PbI3@CNDs for photoelectrochemical sensing was then explored. A molecularly imprinted polymer (MIP) that could specifically recognize cholesterol (CHO) was anchored to PVDF-CH3NH3PbI3@CNDs via a simple thermal polymerization process, followed by elution with hexane. A label-free and sensitive photoelectrochemical method for CHO detection was achieved by using the MIPs@PVDF-CH3NH3PbI3@CNDs platform. The detection limit for CHO was 2.1 × 10−14 mol/L, lower than most of the existing CHO detection methods. In our perception, this platform can be extended to numerous other analytes. This research result may provide a new understanding to improve the performance and broaden the application range of organic-inorganic perovskites. |
| Databáze: | OpenAIRE |
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