Fluorescence ‘turn-off–on’ assays for neomycin sulphate and K+ ions with orange-red fluorescent molybdenum nanoclusters
- Authors
- Sadhu, Vibhuti Atulbhai; Jha, Sanjay; Park, Tae Jung; Kailasa, Suresh Kumar
- Issue Date
- Mar-2024
- Publisher
- WILEY
- Keywords
- Arg-A. paniculata-MoNCs; fluorescence turn-off-on approach; food and biofluids; K+ ion; neomycin sulphate
- Citation
- LUMINESCENCE, v.39, no.3
- Journal Title
- LUMINESCENCE
- Volume
- 39
- Number
- 3
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/73078
- DOI
- 10.1002/bio.4709
- ISSN
- 1522-7235
1522-7243
- Abstract
- Fluorescent metal nanoclusters (MNCs) have found extensive application in recognizing molecular species. Here, orange-red fluorescent Arg-A. paniculata-MoNCs were synthesized using Andrographis paniculata leaf extract, arginine as a ligand, and MoCl5 as a metal precursor. The Arg-A. paniculata-MoNCs complex exhibited a quantum yield (QY) of 16.91% and excitation/emission wavelengths of 400/665 nm. The synthesized Arg-A. paniculata-MoNCs successfully acted as a probe for assaying neomycin sulphate (NS) via fluorescence turn-off and K+ ions via fluorescence turn-on mechanisms, respectively. Moreover, the developed probe was effectively used to develop a cellulose paper strip-based sensor for detection of NS and K+ ions. Arg-A. paniculata-MoNCs demonstrated great potential for sensing NS and K+ ions, with concentration ranges of 0.1-80 and 0.25-110 mu M for NS and K+ ions, respectively. The as-synthesized Arg-A. paniculata-MoNCs efficiently detected NS and K+ ions in food and biofluid samples, respectively.
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