Porous Halide Perovskite–Polymer Nanocomposites for Explosive Detection with a High Sensitivity

Xin Shan, Songlin Zhang, Meng Zhou, Thomas Geske, Melissa Davis, Ayou Hao, He Wang, Zhibin Yu

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

A porous halide perovskite–polymer nanocomposite is developed using a freeze-drying process. Such a composite shows strong fluorescence quenching after exposure to explosive nitroaromatics, nitroamines, and nitrate esters with a sensitivity of a few nanograms. In addition, this composite is robust against moisture and solvents, showing negligible change in fluorescence intensities after submersion in water, alcohol, and acid, base, and salt solutions. Transient absorption spectroscopy studies further disclose that the explosive chemical introduces more trap states into the perovskite that contributes to fluorescence quenching of the perovskite.

Original languageEnglish (US)
Article number1801686
JournalAdvanced Materials Interfaces
Volume6
Issue number3
DOIs
StatePublished - Feb 8 2019

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Keywords

  • TNT
  • composites
  • explosive detection
  • perovskite

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering

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