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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 35, Number 8
BKCSDE 35(8)
August 20, 2014 

A Simple Carbazole-based Schiff Base as Fluorescence “off-on” Probe for Highly Selective Recognition of Cu2+ in Aqueous Solution
Lijun Tang*, Di Wu, Shuhua Hou, Xin Wen, Xin Dai
Fluorescent probe, Carbazole, Copper(II) recognition, Schiff base
A carbazole-based Schiff base CB2 was synthesized and applied as a highly selective and sensitive fluorescent probe for Cu2+ in H2O-DMSO (8/2, v/v, pH = 7.4) solution. CB2 exhibits an excellent selectivity to Cu2+ over other examined metal ions with a prominent fluorescence “turn-on” at 475 nm. CB2 and Cu2+ forms a 1:2 binding ratio complex with detection limit of 9.5 μM. In addition, the Cu2+ recognition process is hardly interfered by other examined metal ions.
2326 - 2330
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