A new tripodal rhodamine B derivative as a highly selective and sensitive fluorescence chemosensor for copper(II)

作者：Zeng Xi; Wu Chong; Dong Lei; Mu Lan; Xue SaiFeng^*; Tao Zhu

来源：Science in China Series B-Chemistry, 2009, 52(4): 523-528.

DOI：10.1007/s11426-009-0098-8

• tripodal rhodamine B derivative
• copper
• fluorescent chemosensor

A new tripodal rhodamine B derivative 2 was designed and synthesized by tripodal trialdehyde and rhodamine B hydrazide for the first time. This derivative could be used as a fluorescent chemosensor for the selective and sensitive determination of copper(II) in Tris-HCl buffer and ethanol aqueous mixed media. Under the optimum conditions described herein, fluorescence enhancement at 557/577 nm was linearly related to the concentration of copper(II) in the range of 0.10 to 10.00x10(-5) mol center dot L(-1), with a correlation coefficient of R (2)=0.9964 (n=15) and a detection limit of 1.129x10(-7) mol center dot L(-1) (the relative standard deviation for five repeated measurements at 4.00x10(-5) mol center dot L(-1) Cu(II) was 2.2%). The absorbance measurements at 557 nm were linearly related to the concentration of Cu(II) in the range of 0.50 to 25.00x10(-5) mol center dot L(-1), with a correlation coefficient of R (2)=0.9948 (n=13) and a detection limit of 3.338x10(-7)mol center dot L(-1).

• 出版日期2009-4
• 单位贵州大学