title: Synthesis of luminescent covalent-organic polymers for detecting nitroaromatic explosives and small organic molecules.
abstract: Three porous luminescent covalent--organic polymers (COPs) have been synthesized through self-polycondensation of the monomers of tris(4-bromophenyl)amine, 1,3,5-tris(4-bromophenyl)benzene, and 2,4,6-tris-(4-bromo-phenyl)-[1,3,5]triazine by using Ni-catalyzed Yamamoto reaction. All the COP materials possess not only high Brunauer-Emmett-Teller (BET) specific surface area of about 2000 m(2) g(-1) , high hydrothermal stability, but also graphene-like layer texture. Interestingly, COP-3 and COP-4 show very fast responses and high sensitivity to the nitroaromatic explosives, and also high selectivity for tracing picric acid (PA) and 2,4,6-trinitrotoluene (TNT) at low concentration (<1 ppm). In short, the COPs may be a new kind of material for detecting explosives and small organic molecules.
authors.affiliation: State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, PR China.
authors.forename: Zhonghua
authors.initials: Z
authors.lastname: Xiang
authors.forename: Dapeng
authors.initials: D
authors.lastname: Cao
mesh_terms: D053834:Explosive Agents / Q000032:analysis*; D049449:Luminescence; D010851:Picrates / Q000032:analysis*; D011108:Polymers / Q000138:chemical synthesis* / Q000737:chemistry; D014303:Trinitrotoluene / Q000032:analysis*
chemical_list: D053834:Explosive Agents; D010851:Picrates; D011108:Polymers; D014303:Trinitrotoluene; C005858:picric acid