Journal
MATERIALS ADVANCES
Volume 1, Issue 4, Pages 814-819Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d0ma00131g
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Funding
- PhD Botao Qu for confocal laser scanning cell images, theQinglan project of Jiangsu Province (2018-2012) College of Chemistry and Chemical Engineering, Yangzhou Polytechnic Institute
- Fundamental Research Funds for the National Natural Science Foundation of China [51372077]
- Natural Science Foundation of Shanxi Province [201901D111213]
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In this study, for the first time, a novel near-infrared and ratiometric fluorescent probe was conveniently synthesized by reacting PDI-based salicylaldehyde with 2-(hydrazonomethyl)phenol. The probe was designed based on the intramolecular charge transfer (ICT) mechanism and the intramolecular electron transfer (IET) mechanism, which can be blocked by the hypochlorite and a larger conjugation is formed within the probe. Due to the turn-on fluorescence responses triggered by the PET and ICT processes after the ClO- addition, the probe produces simultaneous emission peaks at 600 nm and 820 nm. In addition, the probe shows a rapid fluorescence response towards the ClO- ions within 5 s, a low detection limit (0.8 x 10(-7) M), intense color changes (from purple to light green), excellent selectivity, and reversibility. Importantly, cell imaging experiments show that the probe can identify endogenous ClO- successfully.
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