A new rhodamine-based single molecule multianalyte (Cu2+, Hg2+) sensor and its application in the biological system
2011; Elsevier BV; Volume: 92; Issue: 3 Linguagem: Inglês
10.1016/j.dyepig.2011.07.010
ISSN1873-3743
AutoresLina Wang, Jiexi Yan, Wenwu Qin, Weisheng Liu, Rui Wang,
Tópico(s)Analytical Chemistry and Sensors
ResumoA new single molecule multianalyte sensor, vanillic aldehyde rhodamine 6G hydrazone has been designed for the selective detection of Cu2+ and Hg2+ ions. UV/Vis spectroscopy indicates that the sensor is a good chromogenic chemosensor for Cu2+ in 1:99 (v/v) ethanol–water media. Whereas, other ions, such as Li+, Na+, Mg2+, K+, Ca2+, Cr3+, Mn2+, Fe3+, Co2+, Ni2+, Zn2+, Ag+, Cd2+, Ba2+, Hg2+ and Pb2+ failed to generate a distinct response. Fluorescence spectral data reveals that the sensor is an excellent fluorescent chemosensor for Hg2+ in aqueous ethanol solution and with no fluorescent response toward other ions. The spectroscopic behavior of the sensor in living cells indicated that it can be used for the detection of Cu2+ and Hg2+ in environmental and biological systems. Mechanisms for the high selectivity of the sensor to Cu2+ and Hg2+ are discussed.
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