Abstract
Through a solvothermal approach, a new zinc metal-organic framework (Zn-MOF), [Zn(PBA)(pic)(H2O)]·H2O·0.5DMA has been successfully engineered, based on 2-picolinic acid (Hpic) and 4-(pyridin-4-yl) benzoic acid (HPBA) ligands. We investigated the crystalline structure, chemical and thermal stability, and fluorescence properties by some modern techniques in detail. Zn-MOF possesses splendid water stability. Especially, the Zn-MOF displays remarkable fluorescent quenching effect toward nitrobenzene (NB) and Fe3+ ion. The high sensitivities KSV values for NB and Fe3+ are 3.80 × 103 M−1, and 2.42 × 104 M−1, and the low limit of detection values of NB and Fe3+ are 1.84 × 10−5 M and 0.315 μM. Moreover, the electron and energy transfer mechanism are reasonably explained for the sensing mechanisms. As a result, Zn-MOF can be used as a dual-responsive luminescence quenching detector to detect NB and Fe3+ with outstanding sensitivity, selectivity and recyclability.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
