1. Solution processed liquid metal-conducting polymer hybrid thin films as electrochemical pH-threshold indicators
- Author
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Mitraka, Evangelia, Kergoat, Loig, Ullah Khan, Zia, Fabiano, Simone, Douheret, O., Leclere, P., Nilsson, M., Andersson Ersman, P., Gustafsson, G., Lazzaroni, R., Berggren, Magnus, Crispin, Xavier, Mitraka, Evangelia, Kergoat, Loig, Ullah Khan, Zia, Fabiano, Simone, Douheret, O., Leclere, P., Nilsson, M., Andersson Ersman, P., Gustafsson, G., Lazzaroni, R., Berggren, Magnus, and Crispin, Xavier
- Abstract
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., Funding Agencies|European Research Council (ERC-starting-grant) [307596]; European Commission; Region Wallonne (FEDER Revetements Fonctionnels program) [475225-579695]; BELSPO [IAP 7/05]; OPTI2MAT Excellence program of Region Wallonne [816925]; FNRS-FRFC
- Published
- 2015
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