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Title: PEDOT:PSS-based Multilayer Bacterial-Composite Films for Bioelectronics

Journal Article · · Scientific Reports

Abstract Microbial electrochemical systems provide an environmentally-friendly means of energy conversion between chemical and electrical forms, with applications in wastewater treatment, bioelectronics, and biosensing. However, a major challenge to further development, miniaturization, and deployment of bioelectronics and biosensors is the limited thickness of biofilms, necessitating large anodes to achieve sufficient signal-to-noise ratios. Here we demonstrate a method for embedding an electroactive bacterium, Shewanella oneidensis MR-1, inside a conductive three-dimensional poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) matrix electropolymerized on a carbon felt substrate, which we call a multilayer conductive bacterial-composite film (MCBF). By mixing the bacteria with the PEDOT:PSS precursor in a flow-through method, we maintain over 90% viability of S. oneidensis during encapsulation. Microscopic analysis of the MCBFs reveal a tightly interleaved structure of bacteria and conductive PEDOT:PSS up to 80 µm thick. Electrochemical experiments indicate S. oneidensis in MCBFs can perform both direct and riboflavin-mediated electron transfer to PEDOT:PSS. When used in bioelectrochemical reactors, the MCBFs produce 20 times more steady-state current than native biofilms grown on unmodified carbon felt. This versatile approach to control the thickness of bacterial composite films and increase their current output has immediate applications in microbial electrochemical systems, including field-deployable environmental sensing and direct integration of microorganisms into miniaturized organic electronics.

Research Organization:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1619458
Alternate ID(s):
OSTI ID: 1506383
Journal Information:
Scientific Reports, Journal Name: Scientific Reports Vol. 8 Journal Issue: 1; ISSN 2045-2322
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United Kingdom
Language:
English
Citation Metrics:
Cited by: 44 works
Citation information provided by
Web of Science

References (51)

Translating Electronic Currents to Precise Acetylcholine–Induced Neuronal Signaling Using an Organic Electrophoretic Delivery Device journal November 2009
A polypyrrole/anthraquinone-2,6-disulphonic disodium salt (PPy/AQDS)-modified anode to improve performance of microbial fuel cells journal February 2010
Reconstruction of Extracellular Respiratory Pathways for Iron(III) Reduction in Shewanella Oneidensis Strain MR-1 journal January 2012
An arsenic-specific biosensor with genetically engineered Shewanella oneidensis in a bioelectrochemical system journal December 2014
Direct Measurement of Ion Mobility in a Conducting Polymer journal June 2013
Living and Conducting: Coating Individual Bacterial Cells with In Situ Formed Polypyrrole journal June 2017
Surface Modification of Microbial Fuel Cells Anodes: Approaches to Practical Design journal July 2014
Transforming exoelectrogens for biotechnology using synthetic biology: Synthetic Biology of Exoelectrogens journal September 2015
Enhanced electricity production from microbial fuel cells with plasma-modified carbon paper anode journal January 2012
Macroporous and Monolithic Anode Based on Polyaniline Hybridized Three-Dimensional Graphene for High-Performance Microbial Fuel Cells journal February 2012
Chemical delivery array with millisecond neurotransmitter release journal November 2016
Facilitated extracellular electron transfer of Geobacter sulfurreducens biofilm with in situ formed gold nanoparticles journal June 2018
Electronic plants journal November 2015
Organic electronics for precise delivery of neurotransmitters to modulate mammalian sensory function journal July 2009
Conjugated poly(thiophenes): synthesis, functionalization, and applications journal June 1992
Poly (3,4-ethylenedioxythiophene) promotes direct electron transfer at the interface between Shewanella loihica and the anode in a microbial fuel cell journal March 2015
Effect of composites based nickel foam anode in microbial fuel cell using Acetobacter aceti and Gluconobacter roseus as a biocatalysts journal October 2016
Electrochemical evaluation of poly(3,4-ethylenedioxythiophene) films doped with bacteria based on viability analysis journal October 2015
Synergetic effect of conductive polymer poly(3,4-ethylenedioxythiophene) with different structural configuration of anode for microbial fuel cell application journal August 2015
Systematic screening of carbon-based anode materials for microbial fuel cells with Shewanella oneidensis MR-1 journal October 2013
Mini-review: Anode modification for improved performance of microbial fuel cell journal June 2017
Simplified Large-Area Manufacturing of Organic Electrochemical Transistors Combining Printing and a Self-Aligning Laser Ablation Step journal April 2012
Self-Constructed Electrically Conductive Bacterial Networks journal January 2009
Improved performance of membrane free single-chamber air-cathode microbial fuel cells with nitric acid and ethylenediamine surface modified activated carbon fiber felt anodes journal January 2011
Engineering of a synthetic electron conduit in living cells journal October 2010
Electronic Control of Cell Detachment Using a Self-Doped Conducting Polymer journal August 2011
Carbon nanotubes as electrode modifier promoting direct electron transfer from Shewanella oneidensis journal January 2010
Power output and columbic efficiencies from biofilms of Geobacter sulfurreducens comparable to mixed community microbial fuel cells: High current production with a pure culture journal June 2008
Performance of electro-spun carbon nanofiber electrodes with conductive poly(3,4-ethylenedioxythiophene) coatings in bioelectrochemical systems journal July 2017
Anode modification by electrochemical oxidation: A new practical method to improve the performance of microbial fuel cells journal January 2012
The effect of the encapsulation of bacteria in redox phospholipid polymer hydrogels on electron transfer efficiency in living cell-based devices journal November 2012
Ammonia treatment of carbon cloth anodes to enhance power generation of microbial fuel cells journal March 2007
The organic electrochemical transistor for biological applications journal January 2015
Carbon nanotube/chitosan nanocomposite as a biocompatible biocathode material to enhance the electricity generation of a microbial fuel cell journal January 2011
Enhanced electrical contact of microbes using Fe3O4/CNT nanocomposite anode in mediator-less microbial fuel cell journal August 2014
Binder-free graphene and manganese oxide coated carbon felt anode for high-performance microbial fuel cell journal July 2016
Ruthenium oxide-coated carbon felt electrode: A highly active anode for microbial fuel cell applications journal July 2012
The Mtr Pathway of Shewanella oneidensis MR-1 Couples Substrate Utilization to Current Production in Escherichia coli journal August 2014
Hierarchically Three-Dimensional Nanofiber Based Textile with High Conductivity and Biocompatibility As a Microbial Fuel Cell Anode journal June 2016
Bound Flavin Model Suggests Similar Electron-Transfer Mechanisms in Shewanella and Geobacter journal August 2014
A miniature microbial fuel cell with conducting nanofibers-based 3D porous biofilm journal November 2015
Chronic neural recordings using silicon microelectrode arrays electrochemically deposited with a poly(3,4-ethylenedioxythiophene) (PEDOT) film journal March 2006
Conductive artificial biofilm dramatically enhances bioelectricity production in Shewanella-inoculated microbial fuel cells journal January 2011
A Decade of Iontronic Delivery Devices journal March 2018
Ordered surfactant-templated poly(3,4-ethylenedioxythiophene) (PEDOT) conducting polymer on microfabricated neural probes journal January 2005
Disentangling the roles of free and cytochrome-bound flavins in extracellular electron transport from Shewanella oneidensis MR-1 journal April 2016
Highly Active Bidirectional Electron Transfer by a Self-Assembled Electroactive Reduced-Graphene-Oxide-Hybridized Biofilm journal March 2014
Bacterial Manganese Reduction and Growth with Manganese Oxide as the Sole Electron Acceptor journal June 1988
Proof of principle for an engineered microbial biosensor based on Shewanella oneidensis outer membrane protein complexes journal September 2013
Electrochromic and highly stable poly(3,4-ethylenedioxythiophene) switches between opaque blue-black and transparent sky blue journal March 1994
Flavin Electron Shuttles Dominate Extracellular Electron Transfer by Shewanella oneidensis journal January 2013