Copper nanoclusters as fluorescence‐quenching probes for the quantitative analysis of total iodine

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 allow...

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Bibliographic Details
Published inLuminescence (Chichester, England) Vol. 33; no. 5; pp. 981 - 985
Main Authors Cao, Xueling, Li, Xin, Liu, Faxian, Luo, Yanan, Yu, Liying
Format Journal Article
LanguageEnglish
Published England Wiley Subscription Services, Inc 01.08.2018
Subjects
Copper
Copper - chemistry
copper nanoclusters
Detection
Fluorescence
fluorescence quenching
Fluorescent Dyes - chemistry
Fluorescent indicators
Iodine
Iodine - analysis
iodine detection
Kelp
Kelp - chemistry
Limit of Detection
Mathematical models
Nanoclusters
Nanostructures - chemistry
Quantitative analysis
Quenching
response mechanism
Sensitivity and Specificity
Spectrometry, Fluorescence - methods
Tannic acid
Tannins - chemistry
response mechanism
iodine detection
fluorescence quenching
copper nanoclusters
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Summary: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.
ISSN:1522-7235
1522-7243
DOI:10.1002/bio.3498