Journal
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
Volume 17, Issue 8, Pages 5908-5917Publisher
AMER SCIENTIFIC PUBLISHERS
DOI: 10.1166/jnn.2017.14388
Keywords
Silica Flake-Shell Capsules; Nanomechanical Membrane-Type Surface Stress Sensor; Protein Immobilization; Gas-Phase Sensing
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Funding
- National Institute for Materials Science (NIMS), Japan
- Warsaw University' of Technology (WUT), Poland
- World Premier International Research Center Initiative (WPI Initiative), MEXT, Japan
- JSPS KAKENHI [JP16H06518]
- JST CREST
- Grants-in-Aid for Scientific Research [16K21602, 15H03588] Funding Source: KAKEN
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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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