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Nanostructured Ag-zeolite Composites as Luminescence-based Humidity Sensors
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A triphenylamine-functionalized luminescent sensor for efficient p-nitroaniline detection.

Ning-Ning Ji1, Zhi-Qiang Shi, Hai-Liang Hu

  • 1College of Chemistry and Chemical Engineering, Taishan University, Tai'an 271021, P. R. China. kobeecho@163.com.

Dalton Transactions (Cambridge, England : 2003)
|May 15, 2018
PubMed
Summary

A novel triphenylamine-functionalized material, [Zn(bpba)(NO3)] (1), demonstrates highly sensitive detection of p-nitroaniline (p-NA). This luminescent sensor offers a rapid and selective method for nitroaromatic compound analysis.

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Area of Science:

  • Materials Science
  • Coordination Chemistry
  • Chemical Sensing

Background:

  • Triphenylamine-functionalized materials offer unique photophysical properties.
  • Hybrid materials integrating π-conjugated fluorophores are of interest for sensing applications.
  • Nitroaromatic compounds, such as p-nitroaniline (p-NA), pose environmental and safety concerns.

Purpose of the Study:

  • To synthesize and characterize a novel triphenylamine-functionalized metal-organic framework.
  • To investigate the material's potential as a luminescent sensor for nitroaromatic compounds.
  • To establish a new vapor-sensing route for nitroaromatic isomer detection.

Main Methods:

  • Synthesis of [Zn(bpba)(NO3)] (1) with a 63-hcb net structure.
  • Photophysical studies to evaluate luminescence properties.
  • Vapor-sensing experiments using saturated ethanol solutions of nitroaromatic isomers.

Main Results:

  • Compound 1 exhibits a 2D + 2D → 2D parallel polycatenation structure.
  • The material shows superior sensitivity towards p-nitroaniline (p-NA) with a low detection limit (∼0.10 ppm).
  • Highly sensitive and selective detection of p-NA was achieved with a rapid response time (30 s) and high quantum efficiency (>90.0%).

Conclusions:

  • The synthesized material serves as a promising luminescent sensor for nitroaromatic detection.
  • A novel and effective vapor-sensing route for nitroaromatic isomers has been established.
  • The material demonstrates excellent sensitivity, selectivity, and rapid response for p-NA detection.