A simple imidazole derivative modified with triphenylamine and fluorobenzene groups (MZ-F) was synthesized through one-pot multi-component ring-formation condensation. In the presence of copper ions, the acetonitrile solution of MZ-F showed a new absorption peak at longer wavelength and at the same time the fluorescence of MZ-F solution was quenched substantially. Photoluminescence spectroscopic titration showed that MZ-F formed a 1:1 complex with Cu²⁺ and the detection limit reached 3.93 × 10⁻⁶ mol/L. Meanwhile, MZ-F demonstrates high selectivity for sensing copper ions.

中文翻译：

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基于咪唑的铜离子荧光探针

通过一锅多组分成环缩合反应，合成了一种简单的由三苯胺和氟苯甲基改性的咪唑衍生物（MZ-F）。在存在铜离子的情况下，MZ-F的乙腈溶液在更长的波长处显示出新的吸收峰，并且同时MZ-F溶液的荧光被显着淬灭。光致发光光谱滴定表明，MZ-F与Cu ²⁺形成1：1的络合物，检出限达到3.93×10 ^-6 mol / L。同时，MZ-F表现出对铜离子感测的高选择性。