Abstract:

A new Rhodamine derivative RCu was designed and synthesized as a colorimetric probe for Cu(Ⅱ) with high selectivity. RCu itself has no color in HEPES buffer solution (2×10^-5 mol·L^-1, pH 7.4). With Cu²⁺ added, the solution turns into pink color, but without change in color with other common metal cations. The probe can recognize Cu²⁺ at low concentrations and the detection limit is 6.37×10^-8 mol·L^-1. Meanwhile, the probe can detect Cu²⁺ in water samples at lower concentrations by indicator paper, indicative of its great potential applications.

Key words: dye, probe, image, molecular engineering, chemical analysis, organic compound, synthesis, biomedical engineering, product engineering

摘要：

设计合成了以罗丹明为母体的探针分子RCu,可实现对Cu²⁺的选择性识别。在HEPES缓冲溶液(2×10^-5 mol·L^-1, pH 7.4)的测试体系中RCu本身无颜色,加入Cu²⁺后溶液变为粉红色,而且加入其他常见金属阳离子无颜色变化。探针分子可识别较低浓度的Cu²⁺,检出限可达6.37×10^-8 mol·L^-1。同时探针分子可用于试纸化检测,对水样中的Cu²⁺可实现低浓度的检测,具有一定的实用价值。

关键词: 染料, 探针, 成像, 分子工程, 化学分析, 有机化合物, 合成, 生物医学工程, 产品工程