Toward Tunable Photonic Nanosheet Sensors: Strong Influence of the Interlayer Cation on the Sensing Characteristics

Pirmin Ganter, Leslie M. Schoop, Bettina V. Lotsch

Research output: Contribution to journalArticle

9 Scopus citations

Abstract

Researchers present the synthesis and characterization of novel tantalum phosphate nanosheets by exfoliating HTaP2O8·2H2O with tetrabutylammonium hydroxide (TBAOH) and tetrabutylphosphonium hydroxide (TBPOH). The nanosheets are spin-coated to create optically homogenous thin films containing the respective counter ions. The impact of the counter ion for distinguishing VOCs is evaluated and compared to H3Sb3P2O14 and TBAxH3-xSb3 P2O14 nanosheet thin film devices. They find a clear improvement on the sensitivity toward several solvent vapors with varying polarity, resulting in a better vapor differentiation capability if organic counter ions are present.

Original languageEnglish (US)
Article number1604884
JournalAdvanced Materials
Volume29
Issue number6
DOIs
StatePublished - Jan 1 2017
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

Keywords

  • Fabry–Pérot device
  • colorimetric sensing
  • intercalants
  • nanosheets
  • photonic nose

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