Journal
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
Volume -, Issue 36, Pages 5479-5485Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ejic.201100772
Keywords
Hydrazones; Probes; Fluo-res-cence; Aluminum; Isomerization
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Funding
- Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR)
- Department of Science and Technology (DST), India
- Council of Scientific and Industrial Research (CSIR), Delhi, India
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We have synthesized naphthaldehydecarbonohydrazone (NC) and naphthaldehydethiocarbonohydrazone (NTC) Schiff base ligands by the condensation reaction of 2-hydroxy naphthaldehyde with urea and thiourea, respectively. Both these Schiff base ligands show blue turn-on fluorescence in the presence of aluminum(III), as a result of a restricted C=N isomerization mechanism. Aluminum(III) can be detected in the presence of most of the competing metal ions by using NC and NTC. The association constant (log?Ka) of NC and NTC for Al3+ in acetonitrile was calculated to be 14.5 and 14.1, respectively.
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