A New Probe for Ca2+ Based on the Rhodamine B Amide Armed Homotrioxacalix[3] Arene-Sb3+ Complex

作者：Zhang Wen-juan; Wu Chong; Zeng Xi; Mu Lan^*; Xue Sai-feng; Tao Zhu

来源：Spectroscopy and Spectral Analysis, 2010, 30(5): 1305-1309.

DOI：10.3964/j.issn.1000-0593(2010)05-1305-05

• Rhodamine B
• homotrioxacalix[3]arene
• Fluorescence and colorimetric probe
• Sb3+
• Ca2+

A new fluorescence probe based on the rhodamine B amide-armed homotrioxacalix[3]arene (1) has been synthesized, and its Ca2+-selective chromogenic properties were investigated in acetonitrile Tris-HCl buffer (pH 7) solution by UV-Vis and fluorescence spectroscopies. Upon the addition of Sb3+ ion, the spirocyclic ring of 1 was opened and a significant fluorescence enhancement and colorimetric change was observed. However, addition of Ca2+ ion to the solution of 1-Sb3+ complex leads to a strong fluorescence quenching of the original 1-Sb3+ complex. The phenomenon exhibited a pronounced Ca2+ selective fluoroionophoric behavior over other coexistent metal ions and provided the ratiometric determination as well as naked-eye detection of Ca2+ ions.

• 出版日期2010-5
• 单位贵州大学