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1,3-Bis(cyanomethoxy)calix[4]arene capped CdSe quantum dots for the fluorogenic sensing of fluorene

机译:1,3-双(氰基甲氧基)杯[4]芳烃封端的CdSe量子点,用于芴的荧光传感

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Capping of 1,3-bis(cyanomethoxy)-tert-butylcalix[4]arene (CAD) onto CdSe quantum dots (QDs) was characterized by a fluorescence enhancement of the QDs (λem = 580 nm) upon surface interaction with the phenolic moiety of CAD. CAD@QD showed selective and sensitive 1.67 fold fluorescence enhancement in the presence of fluorene among fifteen PAHs. The fluorescence enhancement was characterized by monolayer adsorption of fluorene on to the surface of CAD@QD. The limit of detection for fluorene was observed to be 0.8 nM. This method was used and compared with detection of fluorene in spiked respirable dust (PM10) samples collected during an open biomass (stubble) burning event.
机译:1,3-双(氰基甲氧基)-叔丁基[4]芳烃(CAD)在CdSe量子点(QDs)上的封端是通过QDs的荧光增强(λ< / em> em = 580 nm)与CAD的酚部分进行表面相互作用。 CAD @ QD在15个PAH中存在芴的情况下显示出选择性和敏感的1.67倍荧光增强。荧光增强的特征在于芴在CAD @ QD表面上的单层吸附。芴的检测下限为0.8 nM。使用该方法并将其与在开放式生物量(残茬)燃烧事件中收集的加标可吸入粉尘(PM 10 )样品中的芴检测方法进行比较。

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