Abstract
A novel unsymmetrical bis(salamo)-based sensor H5L has been firstly synthesized, and characterized by means of elemental analyses, fourier transform infrared spectroscopy and ESI-mass spectrometry, 1HNMR and Gaussian-09 software program. The RGB analysis is made by Color Assist software. The sensor has good selectivity and sensitivity for Cu2+ ions, which is due to the paramagnetism of Cu2+ ions. When Cu2+ ions were added to the sensor H5L solution, the color was changed from light yellow to dark brown. The experimental results of solvent effect, pH range and aqueous system show that the sensor has high efficiency in different organic solvents and wide pH ranges. In addition, L–Cu2+ complex can be used as a new sensor to test Cys and GSH.
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