A water-soluble, small molecular zinc fluorescence probe (ZFP) based on 2-(2′-hydroxyphenyl) benzoxazole was prepared. It exhibited high selectivity and sensitivity to Zn²⁺ than the other metal ions. The highest fluorescence enhancement was observed in the presence of Zn²⁺ owing to the inhibition of excited-state intramolecular proton transfer (ESIPT). Furthermore, fluorescence imaging experiments confirmed that ZFP can be used to monitor Zn²⁺ in biological systems.

中文翻译：

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基于2-（2'-羟基苯基）苯并恶唑的植物中Zn ²⁺水溶性小分子荧光探针

制备了基于2-（2'-羟基苯基）苯并恶唑的水溶性小分子锌荧光探针（ZFP）。与其他金属离子相比，它具有更高的选择性和对Zn ^2+的敏感性。由于抑制了激发态分子内质子转移（ESIPT），在Zn ²⁺存在下观察到了最高的荧光增强。此外，荧光成像实验证实ZFP可用于监测生物系统中的Zn ²⁺。