title: Long-Range Proton Conduction across Free-Standing Serum Albumin Mats.
abstract: Free-standing serum-albumin mats can transport protons over millimetre length-scales. The results of photoinduced proton transfer and voltage-driven proton-conductivity measurements, together with temperature-dependent and isotope-effect studies, suggest that oxo-amino-acids of the protein serum albumin play a major role in the translocation of protons via an "over-the-barrier" hopping mechanism. The use of proton-conducting protein mats opens new possibilities for bioelectronic interfaces.
authors: Departments of Materials, Bioengineering and Institute of Biomedical Engineering, Imperial College London, London, SW7 2AZ, UK.
authors: Nadav
authors: N
authors: Amdursky
authors: Department of Physics and Centre for Plastic Electronics, Imperial College London, London, SW7 2AZ, UK.
authors: Xuhua
authors: X
authors: Wang
authors: Centre for Organic Photonics and Electronics, School of Mathematics and Physics, University of Queensland, Brisbane, Queensland, 4072, Australia.
authors: Paul
authors: P
authors: Meredith
authors: Department of Physics and Centre for Plastic Electronics, Imperial College London, London, SW7 2AZ, UK.
authors: Donal D C
authors: DD
authors: Bradley
authors: Departments of Materials, Bioengineering and Institute of Biomedical Engineering, Imperial College London, London, SW7 2AZ, UK.
authors: Molly M
authors: MM
authors: Stevens
mesh_terms: D000818:Animals; D002417:Cattle; D058266:Dielectric Spectroscopy; D008855:Microscopy, Electron, Scanning; D011522:Protons; D012710:Serum Albumin, Bovine / Q000737:chemistry*; D013696:Temperature
chemical_list: D011522:Protons; D012710:Serum Albumin, Bovine
keywords: current-voltage; hopping mechanism; impedance spectroscopy; protein films; proton transfer