Journal article 21740 views 295 downloads
Water-stable perovskite-on-polymer fluorescent microspheres for simultaneous monitoring of pH, urea, and urease
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Yufei Liu
Analytical and Bioanalytical Chemistry, Volume: 413, Issue: 6, Pages: 1739 - 1747
Swansea University Authors:
Sanjiv Sharma , Yufei Liu
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DOI (Published version): 10.1007/s00216-020-03144-z
Abstract
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)...
| Published in: | Analytical and Bioanalytical Chemistry |
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| ISSN: | 1618-2642 1618-2650 |
| Published: |
Springer Science and Business Media LLC
2021
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| Online Access: |
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa56139 |
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| Abstract: |
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. |
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| Keywords: |
Perovskite quantum dots; PS-PAA microspheres; pH sensing; Urea/urease monitoring |
| College: |
Faculty of Science and Engineering |
| Issue: |
6 |
| Start Page: |
1739 |
| End Page: |
1747 |