The DOI matches its Crossref record; 1 of the 1 references it cites were found in a registry or an index.
Optical Ammonia Sensor Based on Upconverting Luminescent Nanoparticles
Open accessAbstract
The sensor exploits the phenomenon of upconversion luminescence and is based on (a) the use of upconverting nanoparticles (UCNPs) of the NaYF(4):Yb,Er type that can be excited with 980 nm laser light to give a green and red luminescence and (b) the pH probe phenol red immobilized in a polystyrene matrix. Exposure of the sensor film to ammonia causes a strong increase in the 560 nm absorption of the pH probe which, in turn, causes the green emission of the UCNPs to be screened off. The red emission of the UCNPs, in contrast, remains unaffected by ammonia and can serve as a reference signal. Due to the use of 980 nm as the excitation light source, the optical signal obtained is completely free of background visible luminescence of the sample and of scattered light. This is highly advantageous in the case of sensing ammonia in complex matrixes.
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Berthois, Y., Katzenellenbogen, J. A., & Katzenellenbogen, B. S. (1986) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.83.8.2496 · Cited by 1,307
Cited by
Upconversion Nanoparticles: Design, Nanochemistry, and Applications in Theranostics
Chen, G., Qiu, H., Prasad, P. N., & Chen, X. (2014) · Chemical Reviews · doi:10.1021/cr400425h · Cited by 2,699
Fiber-Optic Chemical Sensors and Biosensors (2015–2019)
Wang, X.-D., & Wolfbeis, O. S. (2020) · Analytical Chemistry · doi:10.1021/acs.analchem.9b04708 · Cited by 833
Self-citationLi, X., Zhang, F., & Zhao, D. (2015) · Chemical Society Reviews · doi:10.1039/c4cs00163j · Cited by 615
High-Efficiency in Vitro and in Vivo Detection of Zn2+ by Dye-Assembled Upconversion Nanoparticles
Peng, J., Xu, W., Teoh, C. L., Han, S., Kim, B., Samanta, A., Er, J. C., Wang, L., Yuan, L., Liu, X., et al. (2015) · Journal of the American Chemical Society · doi:10.1021/ja5115248 · Cited by 257
Metadata
- Authors
- Mader, H. S., & Wolfbeis, O. S.
- Venue
- Analytical Chemistry
- Publisher
- American Chemical Society (ACS)
- Published
- 2010-05-19
- Volume
- 82
- Issue
- 12
- Pages
- 5002-5004
- ISSN
- 0003-2700 (ISSN-L)
- 1520-6882
- OpenAlex
- W2070637650
- Cited by
- 215
- References
- 1
- FWCI
- 9.11
- Type
- journal article
- Language
- en
- Open access
- bronze
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