Record number :
Title of article :
Large nanoparticle-induced enhancement of recognition selectivity for Cu2+ ion
Author/Authors :
Yang، نويسنده , , Guoqiang Peter Zhang، نويسنده , , Kai and Gong، نويسنده , , Fangbin and Liu، نويسنده , , Min and Yang، نويسنده , , Zhipei and Ma، نويسنده , , Jinshi and Li، نويسنده , , Shayu Li، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2011
Pages :
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Abstract :
A new fluorescent excited state intramolecular proton transfer compound, 2-(2-hydroxy-4-carbaldehydephenyl)benzoxazole (HCPBO), has been synthesized for the detection of Cu2+, based on its fluorescence quenching. In molecular monodispersed solution, the recognition selectivity for Cu2+ was poor as Co2+ and Ni2+ gave similar results in fluorescence quenching. However, the nanoparticles of HCPBO, prepared in ethanol–water (1:4, v/v), greatly enhanced the recognition selectivity for Cu2+. The mechanism was discussed as energy transfer (ET), energy migration (EM) and the more quantity of formed HCPBO–Cu2+ complex than other metal ions in the nanoparticle conditions enhanced the recognition selectivity for Cu2+ together.
Keywords :
energy transfer , Energy migration , Cu2+ , Recognition selectivity , Nanoparticles
Journal title :
Sensors and Actuators B: Chemical
Link To Document :