Title compound (PTPO) was synthesized by the reaction of 2-acetyl pyridine with 3,4,5-trimethoxy benzaldehyde. The structure of the compound has been confirmed by spectroscopic techniques. Interaction of chalcone with different metal cations was analyzed based on the fluorescence behavior. Results show that chalcone act as on-off switching fluorescent chemosensor for selective and sensitive detection iron metal ion. Mechanism of quenching and complexation were resolute by Benesi-Hildebrand, Stern-Volmer plot and Job-plot.

中文翻译：

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含氮查尔酮的合成：水性介质中Fe3 +金属离子的高灵敏度和选择性荧光化学传感器。

通过2-乙酰基吡啶与3,4,5-三甲氧基苯甲醛的反应合成标题化合物（PTPO）。该化合物的结构已通过光谱技术证实。基于荧光行为分析了查尔酮与不同金属阳离子的相互作用。结果表明，查耳酮可作为选择性开关和灵敏检测铁金属离子的开关化学荧光传感器。Benesi-Hildebrand，Stern-Volmer图和Job-plot确定了淬灭和络合的机理。