Solution processed liquid metal-conducting polymer hybrid thin films as electrochemical pH-threshold indicators
2015 (English)In: Journal of Materials Chemistry C, ISSN 2050-7526, Vol. 3, no 29, 7604-7611 p.Article in journal (Refereed) Published
A global and accurate mapping of the environment could be achieved if sensors and indicators are mass-produced at low cost. Printed electronics using polymeric (semi) conductors offer a platform for such sensor/indicator based circuits. Herein, we present the material concept for an electrochemical pH-threshold indicator based on a printable hybrid electrode which comprises a liquid metal alloy (GaInSn) embedded in a conducting polymer matrix (PEDOT). This hybrid electrode displays a large variation in open circuit potential versus pH in an electrochemical cell, which when connected to the gate of an electrochemical transistor leads to a dramatic change in the drain current in a narrow range of pH.
Place, publisher, year, edition, pages
Royal Society of Chemistry , 2015. Vol. 3, no 29, 7604-7611 p.
Electrical Engineering, Electronic Engineering, Information Engineering
IdentifiersURN: urn:nbn:se:liu:diva-120667DOI: 10.1039/c5tc00753dISI: 000358228400010OAI: oai:DiVA.org:liu-120667DiVA: diva2:847538
Funding Agencies|European Research Council (ERC-starting-grant) ; European Commission; Region Wallonne (FEDER Revetements Fonctionnels program) [475225-579695]; BELSPO [IAP 7/05]; OPTI2MAT Excellence program of Region Wallonne ; FNRS-FRFC2015-08-202015-08-202015-08-20