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Fabrication of Silica-Protein Hierarchical Nanoarchitecture with Gas-Phase Sensing Activity

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The assembly of biomolecules onto mechanically and chemically stable inorganic structures is advantageous for practical applications considering the potential for improvements in the stability and catalytic functionality of biomaterials. In this research, we have utilized hierarchically-structured, radially porous silica hollow spheres as a platform for hemoprotein self-assembly. Proteins adsorbed onto silica surfaces through electrostatic interactions remained intact and exhibited rapid gas-phase sensing activity towards hydrogen sulfide gas. The nanoscale molecular interactions between hemoproteins and the analyzed gases were transduced into measurable variations in electric signals using a nanomechanical Membrane-type Surface stress Sensor (MSS).
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Keywords: Gas-Phase Sensing; Nanomechanical Membrane-Type Surface Stress Sensor; Protein Immobilization; Silica Flake-Shell Capsules

Document Type: Research Article

Affiliations: 1: World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba 305-0044, Japan 2: Instituto de Química de São Carlos, Universidade de São Paulo, CP 780, São Carlos-SP 13560-970, Brazil 3: Faculty of Materials Science and Engineering, Warsaw University of Technology, ul. Wołoska 141, Warsaw 02-507, Poland

Publication date: August 1, 2017

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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