纳米团簇
分析化学(期刊)
材料科学
荧光
X射线光电子能谱
傅里叶变换红外光谱
吸收光谱法
检出限
光谱学
荧光光谱法
铜
吸收(声学)
核化学
化学
核磁共振
纳米技术
光学
有机化学
物理
复合材料
量子力学
冶金
色谱法
作者
Zhiyong Cai,Yin X,Jingling Fang,Jie Zhao,Ting-Yi Wu,Erxiao Hao,Fang Tian,Caifeng Zhang
出处
期刊:NANO
[World Scientific]
日期:2020-05-01
卷期号:15 (05): 2050063-2050063
被引量:4
标识
DOI:10.1142/s1793292020500630
摘要
In this contribution, a one-pot synthesis method possessing the advantages of simple, green and low-cost had been researched for the preparation of L-histidine-stabilized Cu nanoclusters (Cu NCs). Subsequently, the structure and optical properties of as-prepared Cu NCs were studied by using Fourier transform infrared (FTIR), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), fluorescence spectroscopy and UV-Vis absorption spectroscopy. TEM image of the Cu NCs showed high dispersion with an average diameter of 2.0[Formula: see text]nm. Fluorescence spectrum displayed that the Cu NCs emitted green fluorescence (emission wavelength of 492[Formula: see text]nm) under excitation wavelength of 393[Formula: see text]nm. Moreover, the as-synthesized Cu NCs illustrated excellent performances, such as good water solubility, UV stability and high-salt resistance. Interestingly, the fluorescence intensity of as-prepared Cu NCs was obviously quenched in the presence of fluazinam. Under optimal conditions, the relative fluorescence intensity was linear with the fluazinam concentrations from 1 to 40[Formula: see text][Formula: see text]M, with a detection limit of 0.25[Formula: see text][Formula: see text]M. Eventually, the fluorescence sensor was successfully used to determine fluazinam in real water samples.
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