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Bora Yoon, Dae-Young Ham, Oktay Yarimaga, Hyosung An, Chan Woo Lee and Jong-Man Kim Inkjet Printing of Conjugated Polymer Precursors on Paper Substrates for Colorimetric Sensing and Flexible Electrothermochromic Display Advanced Materials 23

Version of Record online: 3 NOV 2011 | DOI: 10.1002/adma.201103471

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Inkjet-printable aqueous suspensions of conjugated polymer precursorsare developed for fabrication of patterned color images on paper substrates. Printing of a diacetylene (DA)-surfactant composite ink on unmodified paper and photopaper, as well as on a banknote, enables generation of latent images that are transformed to blue-colored polydiacetylene (PDA) structures by UV irradiation. Both irreversible and reversible thermochromism with the PDA printed images are demonstrated and applied to flexible and disposable sensors and to displays.

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