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Copper nanoclusters as fluorescence‐quenching probes for the quantitative analysis of total iodine
Author(s) -
Cao Xueling,
Li Xin,
Liu Faxian,
Luo Yanan,
Yu Liying
Publication year - 2018
Publication title -
luminescence
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.428
H-Index - 45
eISSN - 1522-7243
pISSN - 1522-7235
DOI - 10.1002/bio.3498
Subject(s) - iodine , detection limit , fluorescence , chemistry , nanoclusters , quenching (fluorescence) , copper , tannic acid , analytical chemistry (journal) , linear range , chromatography , optics , organic chemistry , physics
Tannic acid‐coated copper nanoclusters (CuNCs@TA) were synthesized and used quantitatively to analyze iodine in kelp. Compared with other methods for iodine detection, the proposed method showed excellent performance. The iodine‐induced linear decrease in the fluorescence intensity of CuNCs@TA allowed the quantitative detection of iodine in the range 20–100 μM, and the limit of detection for iodine was 18 nM. The probe can be used for the determination of iodine in real samples with reliable and accurate results. Modified Stern–Volmer equation and thermodynamic calculation studies were used to discuss the quenching mechanism.