Journal
ANALYST
Volume 137, Issue 19, Pages 4415-4417Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2an35752f
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Funding
- National Science Council of Taiwan
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A simple Schiff base type fluorescent receptor 1 was prepared and evaluated for its fluorescence response to heavy metal ions. Receptor 1 exhibits an off-on-type'' mode with high selectivity in the presence of Zn2+ ion. The addition of EDTA quenches the fluorescence of receptor 1-Zn2+ complex, making receptor 1 a reversible chemosensor. The selectivity of 1 for Zn2+ is the consequence of combined effects of CHEF, C=N isomerization and inhibition of ESIPT.
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