A long-persistent phosphorescent chemosensor for the detection of TNP based on CaTiO₃:Pr³⁺@SiO₂ photoluminescence materials.

ABSTRACT: The detection of nitroaromatic explosives is important due to their strong explosive force and harmfulness in the environment, and for homeland security and public safety. Herein, a phosphorescence CaTiO₃:Pr³⁺@SiO₂ nanosensor was successfully developed for the sensitive and selective detection of 2,4,6-trinitrophenol (TNP). The red-emitting phosphorescent chemosensor CaTiO₃:Pr³⁺@SiO₂ possessed a long enough phosphorescence lifetime of 0.016 s. The TNP induced phosphorescence quenching process of CaTiO₃:Pr³⁺@SiO₂ presented a wide linearity with TNP concentrations ranging from 0.5 to 100 μM, and the detection limit was found to be 20.6 nM. Furthermore, this sensor displayed a high selectivity t

SUBMITTER: Li F 

PROVIDER: S-EPMC9080339 | biostudies-literature | 2018 May

REPOSITORIES: biostudies-literature