Inkjet-compatible single-component polydiacetylene precursors for thermochromic paper sensors

Bora Yoon, Hyora Shin, Eun Mi Kang, Dae Won Cho, Kayeong Shin, Hoeil Chung, Chan Woo Lee, Jong Man Kim

Research output: Contribution to journalArticle

36 Scopus citations


Inkjet-printable diacetylene (DA) supramolecules, which can be dispersed in water without using additional surfactants, have been developed. The supramolecules are generated from DA monomers that contain bisurea groups, which are capable of forming hydrogen-bonding networks, and hydrophilic oligoethylene oxide moieties. Because of suitable size distribution and stability characteristics, the single DA component ink can be readily transferred to paper substrates by utilizing a common office inkjet printer. UV irradiation of the DA-printed paper results in generation of blue-colored polydiacetylene (PDA) images, which show reversible thermochromic transitions in specific temperature ranges. Inkjet-printed PDAs, in the format of a two-dimensional (2D) quick response (QR) code on a real parking ticket, serve as a dual anticounterfeiting system that combines easy decoding of the QR code and colorimetric PDA reversibility for validating the authenticity of the tickets. This single-component ink system has great potential for use in paper-based devices, temperature sensors, and anticounterfeiting barcodes.

Original languageEnglish
Pages (from-to)4527-4535
Number of pages9
JournalACS Applied Materials and Interfaces
Issue number11
Publication statusPublished - 2013 Jun 12



  • conjugated polymer
  • inkjet printing
  • paper sensor
  • polydiacetylene
  • self-assembly
  • thermochromic sensor

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