A solvent-based intelligence ink for oxygen

A. Mills, D. Hazafy

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

A solvent-based, irreversible oxygen indicator ink is described, comprising semiconductor photocatalyst nanoparticles, a solvent-soluble redox dye, mild reducing agent and polymer. Based on such an ink, a film - made of titanium dioxide, a blue, solvent-soluble, coloured ion-paired methylene blue dye, glycerol and the polymer zein - loses its colour rapidly (<30 s) upon exposure to UVA light and remains colourless in an oxygen-free atmosphere, returning to its original blue colour upon exposure to air. In the latter step the rate of colour recovery is proportional to the level of ambient oxygen and the same film can be UV-activated repeatedly. The mechanism of this novel, UV-activated, solvent-based, colorimetric oxygen indicator is discussed, along with its possible applications.
LanguageEnglish
Pages213-218
Number of pages5
JournalAnalyst
Volume133
Issue number2
DOIs
Publication statusPublished - 2008

Fingerprint

Ink
Intelligence
Oxygen
oxygen
Color
dye
Polymers
Coloring Agents
Dyes
Zein
polymer
Quantum Dots
Methylene Blue
Reducing Agents
Reducing agents
Photocatalysts
Atmosphere
Glycerol
Titanium dioxide
Oxidation-Reduction

Keywords

  • solvent-based irreversible oxygen indicator ink
  • semiconductor photocatalyst nanoparticles
  • solvent-soluble redox dye
  • titanium dioxide
  • methylene blue dye
  • polymer zein
  • ambient oxygen
  • UV-activated
  • colorimetric oxygen indicator
  • oxygen indicator ink
  • ink

Cite this

Mills, A. ; Hazafy, D. / A solvent-based intelligence ink for oxygen. In: Analyst. 2008 ; Vol. 133, No. 2. pp. 213-218.
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Mills, A & Hazafy, D 2008, 'A solvent-based intelligence ink for oxygen' Analyst, vol. 133, no. 2, pp. 213-218. https://doi.org/10.1039/b713450a

A solvent-based intelligence ink for oxygen. / Mills, A.; Hazafy, D.

In: Analyst, Vol. 133, No. 2, 2008, p. 213-218.

Research output: Contribution to journalArticle

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AU - Hazafy, D.

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KW - solvent-based irreversible oxygen indicator ink

KW - semiconductor photocatalyst nanoparticles

KW - solvent-soluble redox dye

KW - titanium dioxide

KW - methylene blue dye

KW - polymer zein

KW - ambient oxygen

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KW - colorimetric oxygen indicator

KW - oxygen indicator ink

KW - ink

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