title: A multifunctional Schiff base as a fluorescence sensor for Fe3+and Zn2+ions, and a colorimetric sensor for Cu2+and applications.
abstract: Chemosensors play important parts in the selective recognition of ions, which is widely applied in various fields of environment, industry and biological sciences. In this work, a chemosensor for multi-metal ions based on rhodamine B derivative was synthesized, which could selectively recognize various metal ions in different solvent system. The addition of Cu2+caused the color change from colorless to pink in EtOH/H2O (v/v=1:1) solvent system, which could be quickly identified by the naked eyes with a detection limit of 8.27×10-8M. In ethanol solution system, the addition of Fe3+and Zn2+caused different fluorescence changes with the detection limit of 2.12×10-7M and 6.64×10-7M respectively. The binding ratios are 1:1 (1-Cu2+), 2:1 (1-Fe3+) and 1:1 (1-Zn2+), respectively. Meanwhile, the probe 1 was used to detect the trace metal ions in real water samples. Besides, the probe 1 showed sensitive fluorescence signals for Fe3+in biological cells. The experimental results further verify the application value of the sensor.
authors: College of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, Jiangsu Province 212013, China.
authors: Xu
authors: X
authors: Tang
authors: College of Food and Biological Engineering, Jiangsu University, Zhenjiang, Jiangsu Province 212013, China. Electronic address: hanjuan@ujs.edu.cn.
authors: Juan
authors: J
authors: Han
authors: College of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, Jiangsu Province 212013, China.
authors: Yun
authors: Y
authors: Wang
authors: College of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, Jiangsu Province 212013, China. Electronic address: niliang@ujs.edu.cn.
authors: Liang
authors: L
authors: Ni
authors: School of Computer and Communications Engineering, Jiangsu University, Zhenjiang, Jiangsu Province, 212013, China.
authors: Xu
authors: X
authors: Bao
authors: College of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, Jiangsu Province 212013, China.
authors: Lei
authors: L
authors: Wang
authors: College of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, Jiangsu Province 212013, China.
authors: Wenli
authors: W
authors: Zhang
keywords: Chemosensor; Colorimetry; Fluorometric; Metal ions; Rhodamine B