College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, No. 26 Hexing Road, Harbin 150040, China.
College of Chemistry, Provincial Key Laboratory of Advanced Energy Materials, Northeast Normal University, No. 5268 Renmin Street, Changchun 130024, China.
Inorg Chem. 2020 Apr 20;59(8):5386-5393. doi: 10.1021/acs.inorgchem.9b03635. Epub 2020 Mar 27.
A series of eosin Y (EY)-embedded zirconium-based metal-organic frameworks (Zr-MOFs) were prepared by utilizing the synthetic encapsulating method. By virtue of effective resonant energy transfer between Zr-MOF and EY, not only does EY@Zr-MOF exhibit dual-emissive characteristics, but also the relative intensity of their double emission is greatly tuned with increasing EY loading quantity. As a consequence, the double emission of EY@Zr-MOF presented large distinctions in location and intensity. By using the relative fluorescence intensity instead of the absolute fluorescence intensity of emission peaks as detection signals, two EY@Zr-MOFs served as built-in self-calibrated fluorescence sensors to detect pesticides, where EY@Zr-MOF realized the selective detection of nitenpyram, a kind of nicotine pesticide. These results indicate that the integration of robust Zr-MOF and fluorescence molecules provides a new research platform for pesticide sensing and recognition.
一系列的曙红 Y（EY）嵌入锆基金属有机骨架（Zr-MOFs）是通过利用合成封装方法制备的。由于 Zr-MOF 和 EY 之间的有效共振能量转移，不仅 EY@Zr-MOF 表现出双发射特性，而且它们的双发射的相对强度随着 EY 负载量的增加而大大调节。因此，EY@Zr-MOF 的双发射在位置和强度上有很大的区别。通过使用发射峰的相对荧光强度而不是绝对荧光强度作为检测信号，两个 EY@Zr-MOF 用作内置自校准荧光传感器来检测农药，其中 EY@Zr-MOF 实现了对尼古丁类农药硝虫脒的选择性检测。这些结果表明，坚固的 Zr-MOF 和荧光分子的结合为农药的传感和识别提供了一个新的研究平台。
