Department of Chemistry, School of Chemical and Biotechnology, SASTRA University, Thanjavur, Tamil Nadu, India.
Analyst. 2017 Sep 8;142(18):3346-3351. doi: 10.1039/c7an01052d.
Copper(ii) ion mediated C-H oxidation of dipyrromethanes (DPMs) to the corresponding dipyrrins followed by complexation invoked the selective sensing of copper(ii) ions in aqueous solutions. On the addition of copper, the colour of the DPM solution instantaneously changes from yellow to pink with the detection limit of 0.104 μM measured by absorption spectroscopy, whereas visible colour changes could be observed by the naked eye for concentrations as low as 3 μM.
铜（II）离子介导的二吡咯甲烷（DPM）的 C-H 氧化反应生成相应的二吡咯，并通过配位作用，在水溶液中选择性地检测铜（II）离子。加入铜后，DPM 溶液的颜色瞬间从黄色变为粉红色，通过吸收光谱法测量，检测限为 0.104 μM，而肉眼可见的颜色变化在低至 3 μM 的浓度下即可观察到。
