Results 211 to 220 of about 90,594 (241)

Toward understanding long-distance extracellular electron transport in an electroautotrophic microbial community

Energy & Environmental Science, 2016
Here we show that long-distance extracellular electron transport occurs in a cathodic biofilm capable of CO 2 fixation and O 2 respiration.
Matthew D. Yates, Brian J. Eddie, Nicholas J. Kotloski, Nikolai Lebedev, Anthony P. Malanoski, Baochuan Lin, Sarah M. Strycharz-Glaven, Leonard M. Tender   +7 more
openaire   +1 more source

Transient and Enduring Electronic Resonances Drive Coherent Long Distance Charge Transport in Molecular Wires

The Journal of Physical Chemistry Letters, 2019
It is shown that the yields of oxidative damage observed in double-stranded DNA oligomers consisting of two guanines separated by adenine-thymine (A:T) n bridges of various lengths are reliably accounted for by a multistep mechanism, in which transient and nontransient electronic resonances induce charge transport and solvent relaxation stabilizes the ...
Alessandro Landi, Raffaele Borrelli, Amedeo Capobianco, Andrea Peluso   +3 more
openaire   +3 more sources

Cable bacteria associated with long‐distance electron transport in N ew E ngland salt marsh sediment

Environmental Microbiology Reports, 2014
Summary Filamentous D esulfobulbaceae have been proposed as ‘cable bacteria’, which electrically couple sulfide oxidation and oxygen reduction in marine sediment and thereby create a centimetre‐deep suboxic zone.
Steffen Larsen, Lars Peter Nielsen, Andreas Schramm   +2 more
openaire   +3 more sources

One-Electron Oxidation of DNA:  The Effect of Replacement of Cytosine with 5-Methylcytosine on Long-Distance Radical Cation Transport and Reaction

Journal of the American Chemical Society, 2004
One-electron oxidation of duplex DNA generates a radical cation that migrates through the nucleobases until it is trapped by an irreversible reaction with water or oxygen. The trapping site is often a GG step, because this site has a relatively low ionization potential and this causes the radical cation to pause there momentarily.
Sriram, Kanvah, Gary B, Schuster
openaire   +2 more sources

Solid-State Magnetic Switching Triggered by Proton-Coupled Electron-Transfer Assisted by Long-Distance Proton-Alkali Cation Transport

Journal of the American Chemical Society, 2014
Acidity of water molecules coordinated to Co ions in CoFe Prussian blue analogues (PBA) has been used to reversibly activate the Co(III)Fe(II) ↔ Co(II)Fe(III) electron transfer. The study of the structure and the electronic structure shows that the process implies an original PCET reaction between a solid-state porous coordination polymer and hydroxide
Higel, Pauline, Villain, Françoise, Verdaguer, Michel, Rivière, Eric, Bleuzen, Anne   +4 more
openaire   +3 more sources

Photocatalytic activity of dye-sensitized tin(IV) oxide nanocrystalline particles attached to zinc oxide particles: long distance electron transfer via ballistic transport of electrons across nanocrystallites

Applied Catalysis A: General, 2001
Abstract A catalyst comprising chains of dye-sensitized SnO 2 nanocrystallites (10–15 nm) attached to larger ZnO (∼600 nm) particles is found to photogenerate hydrogen from water with visible light in the presence of a hole scavenger. The catalytic activity originates from ballistic injection of energetic electrons generated in sensitization of SnO ...
K. Tennakone, J. Bandara
openaire   +1 more source

Long-Distance Electron Transport in Unicellular Organisms and Biofilms

Electrical forces are widespread in single-celled organisms and underpin sophisticated communication systems. Bacterial biofilm colonies, for example, attract new members electrically. Bacteria also join together end to end and engage in long-distance electron transport along bacterial filaments over centimetres.
openaire   +2 more sources

Long-distance electron transport drives biogeochemical cycling in the seafloor

2016
The recent discovery of a novel microbial mediated pathway of sulfide oxidation has radically changed the views of sulfur cycling in marine sediments (Nealson, 2010). In this process, referred to as long-distance electron transport (LDET), the oxidation of free sulfide in deeper sediment horizons was shown to be directly coupled to the reduction of ...
Van De Velde, Sebastiaan, Gao, Yue, Meysman, Filip   +2 more
openaire   +1 more source

Long distance electron transport in marine sediments: Microbial and geochemical implications

2013
Anaerobic oxidation of organic matter in marine sediment is traditionally considered to be coupled to oxygen reduction via a cascade of redox processes and transport of intermittent electron donors and acceptors. Electric currents have been found to shortcut this cascade and directly couple oxidation of sulphide centimeters down in marine sediment to ...
Risgaard-Petersen, Nils, Larsen, Steffen, Pfeffer, Christian, Meyer, Rikke Louise; id_orcid 0000-0002-6485-5134, Schramm, Andreas; id_orcid 0000-0002-7614-9616, Dong, Mingdong; id_orcid 0000-0002-2025-2171, Song, Jie, Revil, Andre, Meister, Patric, Nielsen, Lars Peter; id_orcid 0000-0002-7269-4860   +9 more
openaire   +1 more source

Long-Distance Electron Transport Drives Biogeochemical Cycling of Fe, Mn and Ca in the Coastal Seafloor

2016
The recent discovery of a novel microbial pathway of sulfide oxidation has radically changed the views of sulfur cycling in marine sediments [1]. In this process, referred to as electrogenic sulfur oxidation, long filamentous cable bacteria couple the oxidation of free sulfide in deeper sediment horizons to the reduction of oxygen near the sediment ...
Van De Velde, Sebastiaan, Lesven, Ludovic, Burdorf, Laurine, Hidalgo Martinez, Silvia, Geelhoed, Jeanine, Gao, Yue, Meysman, Filip   +6 more
openaire   +1 more source