Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2021 Feb 25;188(3):101.
doi: 10.1007/s00604-021-04756-7.

Different fluorescence emitting copper nanoclusters protected by egg white and double-emission fluorescent probe for fast detection of ethanol

Yanyue Li  1 , Yu He  2 , Yili Ge  1 , Gongwu Song  1 , Jiangang Zhou  3
Affiliations

Different fluorescence emitting copper nanoclusters protected by egg white and double-emission fluorescent probe for fast detection of ethanol

Yanyue Li et al. Mikrochim Acta. .

Abstract

Green emitting copper nanoclusters (G-Cu NCs), yellow emitting Cu NCs (Y-Cu NCs), orange emitting Cu NCs (O-Cu NCs) and red emitting Cu NCs (R-Cu NCs) were prepared using chicken egg white as the stabilizer by changing the reaction conditions. This is a green, facile and cheap method to explore different color emitting CuNCs by the same precursor and stabilizers. The G-Cu NCs were employed for the detection of ethanol due to their aggregation induced emission enhancement (AIEE) effect. The fluorescence emission of Cu NCs at 526 nm under the excitation of 444 nm can be effectively enhanced in the presence of ethanol due to AIEE effect, thus realizing the quantitative determination of ethanol content in the range 5-60%. In addition, a visual dual-emission fluorescence probe with the combination of G-Cu NCs and silicon nanoparticles (Si NPs/G-Cu NCs) was designed to evaluate ethanol content conveniently and rapidly. Desirable linear relationship is observed between ratio of fluorescence intensity (I525/I441) and ethanol content under the excitation of 383 nm. Visible color transformation of this probe is observed in the ethanol content range 2-20%. Moreover, the ethanol sensing platforms were applied to the detection and evaluation of the alcohol content of liquor, and the recoveries in liquor were in the range 99.7% to 113%, broadening the applications of Cu NCs and providing a sensitive detection method for ethanol.

Keywords: Chicken egg white; Copper nanoclusters; Ethanol determination; Ratiometric fluorescent sensor.

PubMed Disclaimer

Similar articles

See all similar articles

References

    1. Liu G, Feng D, Hua D, Liu T, Qi G, Wang W (2017) Fluorescence enhancement of terminal amine assembled on gold Nanoclusters and its application to Ratiometric lysine detection. Langmuir 33(51):14643–14648. https://doi.org/10.1021/acs.langmuir.7b02614 - DOI - PubMed
    1. Xie Y, Shen Y, Duan G et al (2020) Silver nanoclusters: controlled synthesis, structures and photoluminescence. Materials Chemistry Frontiers 4(8):2205–2222. https://doi.org/10.1039/D0QM00117A - DOI
    1. Wu Z, Liu J, Gao Y, Liu H, Li T, Zou H, Wang Z (2015) Assembly-induced enhancement of cu Nanoclusters luminescence with Mechanochromic property. J Am Chem Soc 137(40):12906–12913. https://doi.org/10.1021/jacs.5b06550 - DOI - PubMed
    1. Darugar Q, Qian W, El-Sayed MA, Pileni MP (2005) Size-dependent ultrafast electronic energy relaxation and enhanced fluorescence of copper nanoparticles. J Phys Chem B 110:143–149. https://doi.org/10.1021/jp0545445 - DOI
    1. Lin L, Hu Y, Zhang L, Huang Y, Zhao S (2017) Photoluminescence light-up detection of zinc ion and imaging in living cells based on the aggregation induced emission enhancement of glutathione-capped copper nanoclusters. Biosens Bioelectron 94:523–529. https://doi.org/10.1016/j.bios.2017.03.038 - DOI

Publication types

LinkOut - more resources