两种用于水溶液中Fe3+的新型罗丹明基荧光化学传感器。

Two new rhodamine-based fluorescent chemosensors for Fe3+ in aqueous solution.

作者信息

Liu Yaqi, Xu Zhanhui, Wang Jinhui, Zhang Di, Ye Yong, Zhao Yufen

机构信息

Phosphorus Chemical Engineering Research Center of Henan Province, the College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, China.

出版信息

Luminescence. 2014 Nov;29(7):945-51. doi: 10.1002/bio.2648. Epub 2014 Apr 2.

DOI:10.1002/bio.2648

PMID:24700778

Abstract

Two new rhodamine-based fluorescent probes were synthesized and characterized by NMR, high resolution mass spectrometer (HR-MS) and IR. The probes displayed a high selectivity for Fe(3+) among environmentally and biologically relevant metal ions in aqueous solution (CH3OH-H2O = 3 : 2, v/v). The significant changes in the fluorescence color could be used for naked-eye detection. Job's plot, IR and (1)H NMR indicated the formation of 1: 1 complexes between sensor 1 and Fe(3+). The reversibility establishes the potential of both probes as chemosensors for Fe(3+) detection. The probe showed highly selectivity in aqueous solution and could be used over the pH range between 5 and 9. A simple paper test-strip system for the rapid monitoring of Fe(3+) was developed, indicating its convenient use in environmental samples.

摘要

合成了两种新型罗丹明基荧光探针，并通过核磁共振（NMR）、高分辨率质谱仪（HR-MS）和红外光谱（IR）对其进行了表征。在水溶液（甲醇-水=3:2，v/v）中，这些探针对环境和生物相关金属离子中的Fe(3+)表现出高选择性。荧光颜色的显著变化可用于肉眼检测。Job曲线、红外光谱和1H NMR表明传感器1与Fe(3+)之间形成了1:1的配合物。可逆性确立了这两种探针作为检测Fe(3+)的化学传感器的潜力。该探针在水溶液中表现出高选择性，可在pH值5至9的范围内使用。开发了一种用于快速监测Fe(3+)的简单纸质试纸系统，表明其在环境样品中的使用方便。