基于镧系金属有机框架的近红外磁性核壳纳米粒子作为一种比色法非洛地平传感平台。
Near-infrared magnetic core-shell nanoparticles based on lanthanide metal-organic frameworks as a ratiometric felodipine sensing platform.
作者信息
Jiang Yu-Peng, Fang Xin-Hui, Wang Qian, Huo Jian-Zhong, Liu Yuan-Yuan, Wang Xin-Rui, Ding Bin
机构信息
Tianjin Key Laboratory of Structure and Performance for Functional Molecule, College of Chemistry, Tianjin Normal University, 393 Binshui West Road, Tianjin, 300387, P. R. China.
出版信息
Commun Chem. 2023 May 18;6(1):96. doi: 10.1038/s42004-023-00893-7.
Felodipine is an effective drug to treat hypertension, but its abuse can cause bardycardia. It is significant to develop highly sensitive detection platform for felodipine to enable the efficient treatment of hypertension diseases. In this work, to highly efficiently detect felodipine, multi-emission near-infrared (NIR) hierarchical magnetic core-shell lanthanide-MOF nanoparticles, namely Nd-MOF@Yb-MOF@SiO@FeO (NIR-1), has been synthesized by layer-by-layer (LBL) method. LBL method can adjust the optical properties of NIR-1 and expose more active sites to improve sensitivity in detection process. NIR-1 has near-infrared luminescence emission, which can efficiently avoid the interference of autofluorescence in biological tissues. Photo-luminescent (PL) experiments also reveal that NIR-1 could be used as a near-infrared ratiometric luminescent sensor for felodipine detection with high selectivity and sensitivity, the low of detection limit (LOD) is 6.39 nM in felodipine detection, which is also performed using real biological samples. In addition, NIR-1 can be used as a ratiometric thermometer could also be applied in the temperature sensing from 293 K to 343 K. Finally, detection mechanisms for felodipine and temperature sensing performance based on near-infrared (NIR) emission were also investigated and discussed in detail.
非洛地平是一种治疗高血压的有效药物,但其滥用会导致心动过缓。开发用于非洛地平的高灵敏度检测平台对于高效治疗高血压疾病具有重要意义。在这项工作中,为了高效检测非洛地平,通过层层(LBL)法合成了多发射近红外(NIR)分级磁性核壳镧系金属有机框架纳米粒子,即Nd-MOF@Yb-MOF@SiO@FeO(NIR-1)。LBL法可以调节NIR-1的光学性质并暴露出更多活性位点,以提高检测过程中的灵敏度。NIR-1具有近红外发光发射,能够有效避免生物组织中自发荧光的干扰。光致发光(PL)实验还表明,NIR-1可以用作非洛地平检测的近红外比率发光传感器,具有高选择性和灵敏度,在非洛地平检测中的检测限(LOD)低至6.39 nM,这也是使用真实生物样品进行的检测。此外,NIR-1用作比率温度计也可应用于293 K至343 K的温度传感。最后,还详细研究和讨论了基于近红外(NIR)发射的非洛地平检测机制和温度传感性能。