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Wireless organic electronic ion pumps driven by photovoltaics

Article Open Access Published: 30 July 2019 Wireless organic electronic ion pumps driven by photovoltaics Marie Jakešová, Theresia Arbring Sjöström, Vedran Đerek, David Poxson, Magnus Berggren, Eric Daniel Głowacki & Daniel T. Simon npj Flexible Electronics volume 3, Article number: 14 (2019) Cite this article 1676 Accesses 1 Citations 8 Altmetric Metricsdetails Abstract The organic electronic ion pump (OEIP) is an emerging bioelectronic technology for on-demand and local delivery of pharmacologically active species, especially targeting alkali ions, and neurotransmitters. While electrical control is advantageous for providing precise spatial, temporal, and quantitative delivery, traditionally, it necessitates wiring. This complicates implantation. Herein, we demonstrate integration of an OEIP with a photovoltaic driver on a flexible carrier, which can be addressed by red light within the tissue transparency window. Organic thin-film bilayer photovoltaic pixels are arranged in series and/or vertical tandem to provide the 2.5–4.5 V necessary for operating the high- resistance electrophoretic ion pumps. We demonstrate light-stimulated transport of cations, ranging in size from protons to acetylcholine. The device, laminated on top of the skin, can easily be driven with a red LED emitting through a 1.5-cm-thick finger. The end result of our work is a thin and flexible integrated wireless device platform.

organic electronics ; wireless ; ion pump ; photovoltaic

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