Fluorescent conjugated polymer films as TNT chemosensors

Chang Ping Chang, Chun Yu Chao, Jun Huo Huang, An Kuo Li, Chain-Shu Hsu, Mu Shih Lin, Bing R. Hsieh*, An Chung Su

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

132 Scopus citations

Abstract

Three prototypical light emitting conjugated polymers, two poly(p-phenylene vinylenes) (MEH-PPV and DP10-PPV) and a poly(diphenylacetylene), were examined for chemosensor applications to detect explosive compounds such as 2,4,6-trinitrotoluene (TNT) and 2,4- and 2,6-dinitrotoluene (DNTs). All polymer thin films showed high fluorescence quenching sensitivity towards TNT and DNTs, indicating that a wide range of emissive conjugated polymers are potentially useful chemosensor materials for detecting landmines. The relative sensitivity of fluorescence quenching of the polymers by the analytes has been rationalized in terms of the vapor pressure of the analytes, the solubility parameters of the polymers and the analytes, and the relative energy levels of the polymers.

Original languageEnglish
Pages (from-to)297-301
Number of pages5
JournalSynthetic Metals
Volume144
Issue number3
DOIs
StatePublished - 13 Aug 2004

Keywords

  • Chemosensor
  • DNT
  • Fluorescent conjugated polymer
  • TNT

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