Journal
SENSORS AND ACTUATORS B-CHEMICAL
Volume 144, Issue 1, Pages 337-341Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2009.09.022
Keywords
Fluorescent probe; Ratiometric detection; Zinc ion; Quinoline derivatives; High sensitivity
Funding
- NSF of China [20706008, 20725621]
- National Basic Research Program of China [2009CB724706]
- Ministry of Education of China [IRT0711]
- Key Scientific and Technical Innovation Project [707016]
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A new quinoline derivative probe (QZn1) with DPA as recognition group was designed and prepared for selective detection of Zn2+ in aqueous solution. The recognizing affinity is based on the selective deprotonation and coordination. The resulting fluorescence lambda em via ICT is at 499 nm, while the original fluorescence is at 407 nm. The fluorescence ratio (F-499/F-407) shows high selectivity and sensitivity (nanomolar level) to Zn2+ in aqueous solutions. QZn1 has ideal chemical and spectroscopic properties that satisfy the criteria for further biological and environmental applications. (C) 2009 Elsevier B.V. All rights reserved.
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