Reversible chromatic sensor fabricated by inkjet printing TCDA-ZnO on a paper substrate

Aide Wu, Yuan Gu, Christian Beck, Zafar Iqbal, John F. Federici

Research output: Contribution to journalArticlepeer-review

11 Scopus citations


A flexible reversible color change poly-(10,12-tricosadiynoic acid) TCDA-ZnO (2.5 wt%) composite based chromatic sensor was successfully designed and fabricated by inkjet printing. Fabricated sensors showed good reversibility and stable chromatic properties with color transition temperature at 70 C. Attenuated Total Reflection (ATR) - Fourier Transform Infrared (FTIR) spectra show chelate formation between TCDA and ZnO. Temperature-dependent Raman spectra indicate that the blue-red phase of poly-TCDA-ZnO (2.5 wt%) is thermally triggered at 70 C and the amorphous phase is formed near 120 C. An inkjet printed Quick Response (QR) code using poly TCDA-ZnO demonstrates a sensory functionality which can be incorporated in these codes.

Original languageEnglish (US)
Pages (from-to)10-18
Number of pages9
JournalSensors and Actuators, B: Chemical
StatePublished - Mar 31 2014

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Instrumentation
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Electrical and Electronic Engineering
  • Materials Chemistry


  • Chromatic sensor
  • Conjugated polymer
  • Inkjet printing
  • Thin film fabrication


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