423728-75-0Relevant academic research and scientific papers
Colorimetric chemosensor and test kit for detection copper(II) cations in aqueous solution with specific selectivity and high sensitivity
Lin, Qi,Chen, Pei,Liu, Juan,Fu, Yong-Peng,Zhang, You-Ming,Wei, Tai-Bao
, p. 100 - 105 (2013/06/27)
The specific colorimetric detection of Cu2+ in the context of interference from coexisting metal ions in aqueous solution is a challenge. Therefore, a series of Cu2+ colorimetric chemosensors CS1～CS3, bearing acylthiosemicarbazide moiety as binding site and nitrophenyl moiety as signal group, were designed and synthesized. Among these sensors, CS3 showed excellent colorimetric specific selectivity and high sensitivity for Cu 2+in DMSO/H2O binary solutions. When Cu2+ was added to the solution of CS3, a dramatic color change from brown to green was observed, while the cations Fe3+, Hg2+, Ag, Ca 2+, Zn2+, Pb2+, Cd2+, Ni2 , Co 2+, Cr3+ and Mg2+ did not interfere with the recognition process for Cu2+. The detection limits were 5.0 × 10-6 and 1.0 × 10-7 M of Cu2+ using the visual color changes and UVevis changes respectively. Test strips based on CS3 were fabricated, which could act as a convenient and efficient Cu2+ test kit.
