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Microbial biofilms as living photoconductors due to ultrafast electron transfer in cytochrome OmcS nanowires.
Nat Commun
September 2022
Department of Molecular Biophysics and Biochemistry, Yale University, New Haven, CT, USA.
Light-induced microbial electron transfer has potential for efficient production of value-added chemicals, biofuels and biodegradable materials owing to diversified metabolic pathways. However, most microbes lack photoactive proteins and require synthetic photosensitizers that suffer from photocorrosion, photodegradation, cytotoxicity, and generation of photoexcited radicals that are harmful to cells, thus severely limiting the catalytic performance. Therefore, there is a pressing need for biocompatible photoconductive materials for efficient electronic interface between microbes and electrodes.
View Article and Find Full Text PDFSupramolecular Energy Materials.
Adv Mater
April 2020
Department of Chemistry, Northwestern University, Evanston, IL, 60208, USA.
Self-assembly is a bioinspired strategy to craft materials for renewable and clean energy technologies. In plants, the alignment and assembly of the light-harvesting protein machinery in the green leaf optimize the ability to efficiently convert light from the sun to form chemical bonds. In artificial systems, strategies based on self-assembly using noncovalent interactions offer the possibility to mimic this functional correlation among molecules to optimize photocatalysis, photovoltaics, and energy storage.
View Article and Find Full Text PDFOptoelectronic control of single cells using organic photocapacitors.
Sci Adv
April 2019
Laboratory of Organic Electronics, ITN Campus Norrköping, Linköping University, SE-60221 Norrköping, Sweden.
Optical control of the electrophysiology of single cells can be a powerful tool for biomedical research and technology. Here, we report organic electrolytic photocapacitors (OEPCs), devices that function as extracellular capacitive electrodes for stimulating cells. OEPCs consist of transparent conductor layers covered with a donor-acceptor bilayer of organic photoconductors.
View Article and Find Full Text PDFA novel mammalian cell line development platform utilizing nanofluidics and optoelectro positioning technology.
Biotechnol Prog
November 2018
Attribute Sciences, Process Development, Amgen Inc., Thousand Oaks, CA, 91320.
Generating a highly productive cell line is resource intensive and typically involves long timelines because of the need to screen large numbers of candidates in protein production studies. This has led to miniaturization and automation strategies to allow for reductions in resources and higher throughput. Current approaches rely on the use of standard cell culture vessels and bulky liquid handling equipment.
View Article and Find Full Text PDFPhotoswitchable Sn-Cyt c Solid-State Devices.
Adv Mater
June 2017
Sony Europe Ltd., Materials Science Laboratory, Hedelfinger Strasse 61, 70327, Stuttgart, Germany.
Electron transfer across proteins plays an important role in many biological processes, including those relevant for the conversion of solar photons to chemical energy. Previous studies demonstrated the generation of photocurrents upon light irradiation in a number of photoactive proteins, such as photosystem I or bacteriorhodopsin. Here, it is shown that Sn-cytochrome c layers act as reversible and efficient photoelectrochemical switches upon integration into large-area solid-state junctions.
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