Sensory arrays of covalently functionalized single-walled carbon nanotubes for explosive detection

Jan M. Schnorr, Daan Van Der Zwaag, Joseph J. Walish, Yossi Weizmann, Timothy M. Swager

Research output: Contribution to journalArticlepeer-review

94 Scopus citations

Abstract

Chemiresistive sensor arrays for cyclohexanone and nitromethane are fabricated using single-walled carbon nanotubes (SWCNTs) that are covalently functionalized with urea, thiourea, and squaramide containing selector units. Based on initial sensing results and 1H NMR binding studies, the most promising selectors are chosen and further optimized. These optimized selectors are attached to SWCNTs and simultaneously tested in a sensor array. The sensors show a very high level of reproducibility between measurements with the same sensor and across different sensors of the same type. Furthermore, the sensors show promising long-term stability, which renders them suitable for practical applications.

Original languageEnglish
Pages (from-to)5285-5291
Number of pages7
JournalAdvanced Functional Materials
Volume23
Issue number42
DOIs
StatePublished - 13 Nov 2013
Externally publishedYes

Keywords

  • carbon nanotubes
  • explosive detection
  • sensors
  • thiourea

ASJC Scopus subject areas

  • Chemistry (all)
  • Materials Science (all)
  • Condensed Matter Physics

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