Reversible switching of PEDOT:PSS conductivity in the dielectric-conductive range through the redistribution of light-governing polymers

Y. Kalachyova, O. Guselnikova, P. Postnikov, P. Fitl, L. Lapcak, V. Svorcik, O. Lyutakov

Research output: Contribution to journalArticle

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Abstract

One of the biggest challenges in the field of organic electronics is the creation of flexible, stretchable, and biofavorable materials. Here the simple and repeatable method for reversible writing/erasing of arbitrary conductive pattern in conductive polymer thin film is proposed. The copolymer azo-modified poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) was synthesized to achieve reversible photo-induced local electrical switching in the insulator-semimetal range. The photoisomerization of the polymer was induced by grafting nitrobenzenediazonium tosylate to the PSS main chains. While the as-deposited PEDOT:PSS thin films showed good conductivity, the modification procedure generated polymer redistribution, resulting in an island-like PEDOT distribution and the loss of conductivity. Further local illumination (430 nm) led to the azo-isomerization redistribution of the polymer chains and the creation of a conductive pattern in the insulating polymer film. The created pattern could then be erased by illumination at a second wavelength (470 nm), which was attributed to induction of reverse azo-isomerization. In this way, the reversible writing/erasing of arbitrary conductive patterns in thin polymer films was realized.

Original languageEnglish
Pages (from-to)11198-11206
Number of pages9
JournalRSC Advances
Volume8
Issue number20
DOIs
Publication statusPublished - 1 Jan 2018

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Polymer films
Polystyrenes
Polymers
Isomerization
Thin films
Lighting
Photoisomerization
Metalloids
Electronic equipment
Copolymers
Wavelength
polystyrene sulfonic acid
poly(3,4-ethylene dioxythiophene)

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

Cite this

Reversible switching of PEDOT:PSS conductivity in the dielectric-conductive range through the redistribution of light-governing polymers. / Kalachyova, Y.; Guselnikova, O.; Postnikov, P.; Fitl, P.; Lapcak, L.; Svorcik, V.; Lyutakov, O.

In: RSC Advances, Vol. 8, No. 20, 01.01.2018, p. 11198-11206.

Research output: Contribution to journalArticle

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