Premium
An Efficient Fluorescent Probe for Tetracycline Detection Based on Histidine‐Templated Copper Nanoclusters
Author(s) -
Cai Zhifeng,
Zhu Ruitao,
Chen Siying,
Wu Liangliang,
Qi Kaifei,
Zhang Caifeng
Publication year - 2020
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.202000398
Subject(s) - nanoclusters , x ray photoelectron spectroscopy , fluorescence , copper , ascorbic acid , fourier transform infrared spectroscopy , detection limit , fluorescence spectroscopy , spectroscopy , chemistry , absorption spectroscopy , nuclear chemistry , materials science , infrared spectroscopy , analytical chemistry (journal) , nanotechnology , chemical engineering , organic chemistry , chromatography , physics , food science , quantum mechanics , engineering
In this contribution, we established a simple, green, fast and cost‐effective strategy to prepare green‐emitting fluorescence copper nanoclusters (Cu NCs) by using histidine as a stabilizer and ascorbic acid as a reducing agent. A series of characterization methods including fluorescence spectroscopy, UV‐vis absorption spectroscopy, fourier transform infrared spectroscopy (FT‐IR), transmission electron microscopy (TEM) and X‐ray photoelectron spectroscopy (XPS) were used to characterize the Cu NCs. The histidine‐capped Cu NCs (His‐Cu NCs) was well dispersed and exhibited good water solubility, excellent photostability and salt resistance. Interestingly, it was discovered that tetracycline caused a sensitive and selective decline in the fluorescence intensity of His‐Cu NCs for the first time. The proposed analysis system showed a wide linear range from 0.1 to 110 μM, and the detection limit was 0.047 μM. After that, the fluorescent assay was successfully employed to analyze tetracycline in lake water samples.