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Title: New fluorescent chemodosimeter for Cu2+ based on Schiff base derived from 1-naphthylamine and 2-chlorobenzaldehyde
Authors: Kumar, Jutika
Das, Diganta Kumar
Keywords: Fluorescence;Chemodosimeters;Sensors;Copper;Naphthylamine;Chlorobenzaldehyde;Schiff bases
Issue Date: Nov-2014
Publisher: NISCAIR-CSIR, India
Abstract: On condensation of 1-naphthylamine with 2-chlorobenzaldehyde, the Schiff base (Z)-N-(2-chlorobenzylidene)naphthalene-1-amine (L) is formed which shows moderate fluorescence. L on interaction with Cu2+ hydrolyses back into fluorescent 1-naphthylamine and hence acts as fluorescent chemodosimeter for Cu2+ by “off-on” mode with an ca. 18 times enhancement in fluorescent intensity (detection limit is 10-5 M). The other hydrolysed product, 2-chlorobenzaldehyde, forms a tris chelate complex with Cu2+, as shown by UV/visible spectroscopy and cyclic voltammetry. The metal ions, Na+, K+, Ca2+, Mn2+, Fe2+, Co2+, Ni2+, Cd2+, Hg2+, Pb2+ and Ag+, do not interfere while in the case of Zn2+, moderate interference is observed.
Page(s): 1391-1396
ISSN: 0975-0975(Online); 0376-4710(Print)
Appears in Collections:IJC-A Vol.53A(11) [November 2014]

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