title: New application of a known molecule: rhodamine B 8-hydroxy-2-quinolinecarboxaldehyde Schiff base as a colorimetric and fluorescent "off-on" probe for copper (II).
abstract: Rhodamine B 8-hydroxy-2-quinolinecarboxaldehyde Schiff base (1) has been investigated as a colorimetric and fluorescent "off-on" probe for the recognition of Cu(2+) in aqueous solution. Probe 1 was synthesized by condensation of rhodamine B hydrazide and 8-hydroxy-2-quinolinecarboxaldehyde, which exhibited good selectivity for Cu(2+) among a range of biologically and environmentally important metal ions. The Cu(2+) recognition event undergoes a Cu(2+) promoted hydrolysis of probe 1 to release rhodamine B and the recognition process is barely interfered by other coexisting metal ions.
authors: Department of Chemistry, Liaoning Key Laboratory for the Synthesis and Application of Functional Compounds, Bohai University, Jinzhou, China. lijuntang@tom.com
authors: Lijun
authors: L
authors: Tang
authors: Jiaojiao
authors: J
authors: Guo
authors: Yanhua
authors: Y
authors: Cao
authors: Ning
authors: N
authors: Zhao