Department of Chemistry, Yonsei University, Wonju, 26493, Republic of Korea.
Department of Chemistry, Indian Institute of Technology Ropar, Rupnagar, Punjab, 140001, India.
J Fluoresc. 2019 Jul;29(4):945-952. doi: 10.1007/s10895-019-02407-y. Epub 2019 Jul 29.
A triazole-coupled benzimidazole-based fluorescent probe S1 with nitrogen and oxygen binding sites was synthesized and its properties as a probe for cations were investigated. Probe S1 was found to be highly selective toward Ag ions in aqueous media. The fluorescence intensity of S1 was quenched as a function of the concentration of Ag ions in the presence of potential interfering cations with a detection limit of 2.70 μM. The resulting S1-Ag complex was subsequently studied for its anion recognition abilities and found to recognize Br and Cl ions, revealing the concentration-dependent fluorescence enhancement with detection limits of 22.2 and 23.0 μM, respectively. Revival of the fluorescence profile of probe S1 indicated that Ag ion was released from the S1-Ag complex. Probe S1 is a sensor that can be single-handedly utilized for the qualitative and quantitative determination of Ag, Br, and Cl ions in aqueous media.
合成了一种具有氮氧配位位点的三唑偶联苯并咪唑基荧光探针 S1，并研究了其作为阳离子探针的性质。探针 S1 在水相中对 Ag 离子具有高选择性。在存在潜在干扰阳离子的情况下，S1 的荧光强度随 Ag 离子浓度的变化而猝灭，检测限为 2.70 μM。随后研究了所得 S1-Ag 配合物对阴离子的识别能力，发现它可以识别 Br 和 Cl 离子，检测限分别为 22.2 和 23.0 μM，荧光强度呈浓度依赖性增强。探针 S1 的荧光谱的恢复表明 Ag 离子从 S1-Ag 配合物中释放出来。探针 S1 是一种传感器，可单独用于水相介质中 Ag、Br 和 Cl 离子的定性和定量测定。
