Journal
DYES AND PIGMENTS
Volume 99, Issue 3, Pages 966-971Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.dyepig.2013.08.008
Keywords
Chemosensor; Fluorescent probe; Hydrazine; Fluorescence; Intramolecular charge transfer; Solvent effect
Funding
- National Natural Science Foundation of China [51010002, 51272231, 51229201]
- Natural Science Foundation of Zhejiang Province [LY12E02004]
- Fundamental Research Funds for the Central Universities
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A new fluorescent and colorimetric probe based on the reaction and intramolecular charge transfer (ICT) effect is designed and synthesized. The probe responds rapidly toward hydrazine and exhibits distinct color changes from yellow to colorless, indicating its use as a color indicator for hydrazine. Moreover, the probe also shows a significant broad band fluorescence (410-700 nm) enhancement by similar to 120-fold after the addition of hydrazine. With a detection limit as low as 0.11 ppb, the probe can detect hydrazine in a wide concentration range because of the blunted sensing functional group. The contrast test shows almost no interruption from common elements in water, suggesting the high selectivity of this probe toward hydrazine. The theoretical calculation based on density functional theory (DFT) is also performed and two different ICT modes are found. This hydrazine probe would be a promising candidate applicable in environment protection, water treatment and safety inspection. (C) 2013 Elsevier Ltd. All rights reserved.
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