Water-stable perovskite-on-polymer fluorescent microspheres for simultaneous monitoring of pH, urea, and urease
| Autor: | Yongqin Hu, Yufei Liu, Jia An, Meizhu Chen, Sanjiv Sharma, Guoyi Liu, Rubing Chen, Ying Lyu |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Detection limit
chemistry.chemical_classification Materials science Aqueous solution Urease biology 010401 analytical chemistry 02 engineering and technology Polymer 021001 nanoscience & nanotechnology 01 natural sciences Biochemistry 0104 chemical sciences Analytical Chemistry Styrene chemistry.chemical_compound Hydrolysis chemistry Chemical engineering Urea biology.protein 0210 nano-technology Perovskite (structure) |
| Popis: | Perovskite materials have attracted attention due to their excellent optical and electrical properties; however, their unsatisfactory stability limits their application in biochemical detection. In this paper, CsPbBr3 perovskite quantum dots were successfully encapsulated in poly(styrene/acrylamide) microspheres, using a swelling–shrinking method. The manufactured perovskite microspheres (PDPS composites) not only maintained strong photoluminescence (PL) stability but also demonstrated great water solubility. Additionally, a real-time pH monitoring platform was constructed based on the prepared PDPS composites and dopamine, and the system showed a good linear relationship in a pH range of 4–12. Furthermore, urea could be hydrolyzed to produce hydroxyl groups, thereby increasing the pH of the solution. Therefore, this system was then extended for urea and urease detection. As a result, the detection limits of urea and urease were recorded as 1.67 μM and 2.1 mU/mL, respectively. This development provides an interesting demonstration of the expanding list of applications of perovskite materials. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|