Journal
RSC ADVANCES
Volume 6, Issue 7, Pages 5636-5640Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5ra22245a
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Funding
- Fundamental Research Funds for Central Universities [KYLX15_0125]
- National Major Scientific Instruments and Equipment Development Projects [2014YQ060773]
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In this work, we developed a novel colorimetric and ratiometric fluorescence probe for the selective and sensitive monitoring of cysteine based on a coumarin Schiff-base platform. This probe exhibited remarkable AIE characteristics with an exceptionally large blue shift (125 nm), which showed low emission in DMSO but strong aggregation-induced emission in water solution. An excellent linear relationship of fluorescence intensity ratio (F-450/F-575) (R-2 = 0.9922) versus Cys concentration in the range of 1-13 mu M was obtained.
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