Application of dye molecules to detect and remove heavy metal ions in a variety of complex systems often poses significant challenge. Here we have developed a fast, low-cost phenazine based dye 2-Hydroyphenyl-(1H-imidazo[4,5-b]phenazine(P1) for fluorescence detecting Fe³⁺, Cu²⁺ and removing Ag⁺ from solution by colorimetry. The crystal structure exhibited that P1 and DMSO molecules assemble into dimer through intermolecular hydrogen bonds. P1 can detect Fe³⁺ and Cu²⁺ by fluorescent change, the detection limit(LOD) of P1 for Fe³⁺ and Cu²⁺ were calculated as 3.25 × 10^-7 M and 1.25 × 10^-7 M, respectively. The complex P1-Fe³⁺ showed high selectivity and quick fluorescence turn on response for H₂PO₄^-. In addition, P1-I^- (I^- =F^- and AcO^-)has a greatly brilliant to remove Ag⁺. The removal rates could be reached to 94.91% and 96.00%, respectively.

应用染料分子检测和去除各种复杂系统中的重金属离子通常会带来重大挑战。在这里，我们开发了一种快速、低成本的吩嗪基染料 2-Hydroyphenyl-(1 H -imidazo [4,5-b]吩嗪( P1 )，用于荧光检测 Fe ³⁺、Cu ²⁺并通过以下方法从溶液中去除 Ag ⁺比色法. 晶体结构表明P1和DMSO分子通过分子间氢键组装成二聚体. P1可以通过荧光变化检测Fe ³⁺和Cu ^{2+ ,} P1对Fe ³⁺和Cu ²⁺的检测限(LOD)分别计算为 3.25 × 10 ^-7 M 和 1.25 × 10 ^-7 M。复合物P1-Fe ³⁺_{对H 2} PO ₄ ^-表现出高选择性和快速的荧光开启响应。此外，P1-I ^- (I ^- =F ^-和 AcO ^{- )对去除 Ag +}有很大的影响。去除率分别可以达到94.91%和96.00%。