A Luminescent Microporous Metal–Organic Framework for the Fast and Reversible Detection of High Explosives

Abstract

Ein hoch empfindlicher Sensor: Mit dem intensiv lumineszierenden mikroporösen Metall‐organischen Gerüst [Zn2(bpdc)2(bpee)] (bpdc=4,4′‐Biphenyldicarboxylat; bpee=1,2‐Bipyridylethen) lassen sich Dämpfe des Nitrosprengstoffs 2,4‐Dinitrotoluol und von 2,3‐Dimethyl‐2,3‐dinitrobutan, das Plastiksprengstoff als Markierung zugemischt wird, durch Redox‐Fluoreszenzlöschung sehr schnell, reversibel und mit unerreichter Empfindlichkeit nachweisen (siehe Spektren).

Crystal structure of dipyrido(3,2-a:2',3'-c)phenazine-terphenyl-2,5,2',5'- tetracarboxylic acid (2:1), (C18H10N4)2·(C22H14O8), C58H34N8O8

“…An important goal in this developing field has been the rationalization of the structures of supramolecular crystals based on the structures of their component molecules. Strong, selective, and directional hydrogen bonding has been noted as amost powerful organizing forces in molecular assembly, and the vast majority of publications and reviews have been devoted to the self-organization of organic molecules into multi-dimensional hydrogen bonded architectures [8]. The terphenyl-2,5,2',5'-tetracarboxylic acid, also known as pyromellitic acid, possesses several interesting characteristics: (a)Ithas four carboxyl groups that maybecompletelyorpartially deprotonated, depending on the pH; (b) It is aflexible ligand: two phenyl rings can be rotated around the C-C single bond.…”

Funtzio anitzeko polimero metal-organiko porotsuak (MOF): etorkizuneko material adimendunei begira

“…Konkretuki, konposatu horren igorpena DPArekin kontaktuan jarriz gero bost aldiz biderkatzen da [16]. LMOF-11 deritzon konposatuaren kasuan, aldiz, dinitrotoluenozko (DNT) baporeen aurrean (TNT lehergailuaren ekoizpenean derrigorrezko azpiproduktua) sentikortasun handia dauka, DNT adsorbatzean bere lumineszentziaren % 80 itzaltzen baita [17].…”

Electrospun Fluorescent Nanofibers for Explosive Detection

“…This necessitates a need to develop a novel and modernistic method to fabricate a solid template-based sensor on a large scale for technological applications. A very few methods effectively demonstrated the sensing permanence of TNT in real time application [16,[26][27][28][29][30][31][32][33][34][35][36]. For example Daming Gao reported a resonance energy transfer-amplifying fluorescence quenching at the surface of silica nanoparticles for the ultrasensitive detection of TNT in solution and vapor environments [17].…”