Designing organic mixed conductors for bioelectronic applications (Conference Presentation)

Jonathan Rivnay

doi:10.1117/12.2274707

19 September 2017 Designing organic mixed conductors for bioelectronic applications (Conference Presentation)

Jonathan Rivnay

Proceedings Volume 10364, Organic Sensors and Bioelectronics X; 103640S (2017) https://doi.org/10.1117/12.2274707
Event: SPIE Organic Photonics + Electronics, 2017, San Diego, California, United States

Abstract

Direct measurement and stimulation of electrophysiological activity is a staple of neural and cardiac health monitoring, diagnosis and/or therapy. Such bi-directional interfacing can be enhanced by the low impedance imparted by organic electronic materials that show mixed conduction properties (both electronic and ionic transport). Many high performance bioelectronic devices are based on conducting polymers such as poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate), PEDOT:PSS. By investigating PEDOT-based materials and devices, we are able to establish a set of design rules for new formulations/materials. Introducing glycolated side chains to carefully selected semiconducting polymer backbones, for example, has enabled a new class of high performance bioelectronic materials that feature high volumetric capacitance, transconductance >10mS (device dimensions ca. 10um), and steep subthreshold switching characteristics. A sub-set of these materials outperform PEDOT:PSS and shows significant promise for biocompatible, low power in vitro and in vivo biosensing applications.

Conference Presentation

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Jonathan Rivnay "Designing organic mixed conductors for bioelectronic applications (Conference Presentation)", Proc. SPIE 10364, Organic Sensors and Bioelectronics X, 103640S (19 September 2017); https://doi.org/10.1117/12.2274707

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KEYWORDS

Biosensing

Polymers

Capacitance

In vitro testing

In vivo imaging

Organic electronics

Semiconductors

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