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Direct Patterning of Highly Conductive PEDOT:PSS/Ionic Liquid Hydrogel via Microreactive Inkjet Printing
Univ Auckland, New Zealand.
Univ Auckland, New Zealand.
Linköping University, Department of Science and Technology, Laboratory of Organic Electronics. Linköping University, Faculty of Science & Engineering.
KAUST, Saudi Arabia.
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2019 (English)In: ACS Applied Materials and Interfaces, ISSN 1944-8244, E-ISSN 1944-8252, Vol. 11, no 40, p. 37069-37076Article in journal (Refereed) Published
Abstract [en]

The gelation of poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) has gained popularity for its potential applications in three dimensions, while possessing tissue-like mechanical properties, high conductivity, and biocompatibility. However, the fabrication of arbitrary structures, especially via inkjet printing, is challenging because of the inherent gel formation. Here, microreactive inkjet printing (MRIJP) is utilized to pattern various 2D and 3D structures of PEDOT:PSS/IL hydrogel by in-air coalescence of PEDOT:PSS and ionic liquid (IL). By controlling the in-air position and Marangoni-driven encapsulation, single droplets of the PEDOT:PSS/IL hydrogel as small as a diameter of approximate to 260 mu m are fabricated within approximate to 600 mu s. Notably, this MRIJP-based PEDOT:PSS/IL has potential for freeform patterning while maintaining identical performance to those fabricated by the conventional spin-coating method. Through controlled deposition achieved via MRIJP, PEDOT:PSS/IL can be transformed into different 3D structures without the need for molding, potentially leading to substantial progress in next-generation bioelectronics devices.

Place, publisher, year, edition, pages
AMER CHEMICAL SOC , 2019. Vol. 11, no 40, p. 37069-37076
Keywords [en]
conductive hydrogel; inkjet printing; PEDOT:PSS; conducting polymer; ionic liquids
National Category
Condensed Matter Physics
Identifiers
URN: urn:nbn:se:liu:diva-161393DOI: 10.1021/acsami.9b12069ISI: 000490357900084PubMedID: 31533420OAI: oai:DiVA.org:liu-161393DiVA, id: diva2:1367461
Available from: 2019-11-04 Created: 2019-11-04 Last updated: 2019-11-04

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