LIU ET AL.
7
SCHEME 2 Detection mechanism
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G. Sun, Analyst 2018, 143, 5834.
The credible mechanism obtained by ESI-MS of the interaction
between probe L-Cu2+ and hypochlorite is shown in Scheme 2.[1,23]
As shown in figure S4, the peak of Q1 + Na+ in mass spectra were at
284.0888 and the peak of Q2 + H+ in mass spectra were at 172.0880.
After the addition of hypochlorite, the C-N bond was cut and the cou-
marin was released, which restored the fluorescence intensity.
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ꢀ
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4
| CONCLUSIONS
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2011, 133, 5680.
All in all, a highly sensitive probe was synthesized to detect hypochlo-
rite specifically and quickly. When the probe reacted with hypochlo-
rite, it showed a large stokes shift, produced a strong fluorescence
recovery at 460 nm and the response time is as short as two seconds.
There was a linear fitting curve of the intensities of fluorescence
recovery and the concentrations of hypochlorite ranging from
[14] L.-L. Wang, J. Qiao, H.-H. Liu, J. Hao, L. Qi, X.-P. Zhou, D. Li, Z.-
X. Nie, L.-Q. Mao, Anal. Chem. 2014, 86, 9758.
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J. Biol. Chem. Luminesc. 2018, 33, 153.
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Y. Huan, Sens. Actuators B 2017, 239, 203.
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J. Fluoresc. 2017, 27, 611.
1.00 × 10−6 to 7.47 × 10−4 mol L−1 with a LOD of 5.7 × 10−7 mol L−1
.
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6349.
Moreover, we successfully applied this method to environmental
water samples and achieved satisfactory results. Therefore, the probe
is a splendid hypochlorite sensor, which is characterized by rapid,
selective and sensitive features and can meet practical needs.
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X. Peng, Dyes Pigm. 2019, 162, 160.
ACKNOWLEDGMENTS
Thanks to the Natural Science Foundation of Jilin Province
(20200201238JC) for funding.
[22] L. Pang, Y. Zhou, W. Gao, H. Song, X. Wang, Y. Wang, RSC Adv. 2016,
6, 105795.
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Z. L. Shao, M. Z. Zhu, X. M. Meng, Sens. Actuators B 2016, 222, 483.
ORCID
Yanfu Huan
SUPPORTING INFORMATION
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