A luminescent heterometallic metal–organic framework for the naked-eye discrimination of nitroaromatic explosives

Abstract

A luminescent heterometallic MOF with an interrupted cap topology was synthesized and characterized. This compound exhibits a strong blue-light emission and shows naked-eye selective detection toward trinitrobenzene (TNB) even in the presence of other nitro explosives. Furthermore, the compound is also capable of selectively sensing nitroaromatic picric acid (PA) based on the fluorescence quenching mechanism.

The Impact of Charge‐Distribution on Photochromic Properties in 1D Coordination Polymers

“…The luminescence properties of coordination polymers with central d 10 metal atoms have attracted intense interest because of the potential applications of these compounds as luminescent sensing materials . The photoluminescence spectra of H 2 L1 · Cl 2 and H 2 L2 · Cl 2 show emission maxima at 453 and 468 nm, respectively (λ ex = 380 nm), which probably assigned to the typical ligand‐centered π–π* transitions.…”

The effects of the crosslinking position and degree of conjugation in perylene tetraanhydride bisimide microporous polymers on fluorescence sensing performance

“…4 For example, the LUMO energy levels of PA and p-DNB are lower than that of DP 4 A 0 and DP 4 A 2 . 34,48 However, the LUMO levels are not the only factor affecting the PET process, it is also necessary to take into account the HOMO energy level of the NACs if it is lower than that of the CMPs. Hence, although the LUMO energies of DP 4 A 0 and DP 4 A 2 are lower than that of NB, DNT, p-NT, m-DNB, o-NP, and PhOH, a PET process can occur as well.…”

One Nanoscale Zn(II)-Nd(III) Complex With Schiff Base Ligand: NIR Luminescent Sensing of Anions and Nitro Explosives

“…Construction of heterometallic d-f nanoclusters has received much interest during recent years because of their unique chemical properties (Peng et al, 2012;Wang et al, 2013;Yang et al, 2014;Andruh, 2015;Wen et al, 2019). Fluorescent response to ions and small molecules has received great attention because of the potential application in many areas such as medicine, biology, and environment (Jankolovits et al, 2011;Sun et al, 2015;Qi et al, 2017). As we know, luminescent lanthanide complexes can show emissions in both visible and near-infrared (NIR) ranges (900-1,600 nm) with sharp emission bands, large Stokes shifts, and long lifetimes (Hu et al, 2017;Ning et al, 2018).…”