设计合成了一种基于喹唑啉-4(3H)-酮衍生物的烯胺酮型荧光探针QA.在DMSO溶液中,探针QA对CN-具有高度的选择性识别作用,表现为荧光增强并蓝移,其识别机制为CN-对QA发生迈克尔加成反应.此外,探针QA对CN-响应快速,检测限低至1.75×10-7 mol·L-1.%A new quinazolin-4(3H)-one derivatives-based fluorescent probe QA was designed and synthesized. Probe QA exhibited specific selectivity towards CN- in DMSO solution with fluorescence enhancement and blue-shifted. The recognition mechanism was proved to be underwent Michael addition of CN-toward QA. In addition,the response of probe QA to CN-was very fast and the de-tection limit was as low as 1. 75×10-7 mol·L-1.
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