Journal
NANOSCALE RESEARCH LETTERS
Volume 6, Issue -, Pages -Publisher
SPRINGER
DOI: 10.1186/1556-276X-6-304
Keywords
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Funding
- World Premier International Research Center Initiative (WPI Initiative), MEXT, Japan
- Japan Science and Technology Agency (JST), Japan
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Molecular machines embedded in a Langmuir monolayer at the air-water interface can be operated by application of lateral pressure. As part of the challenge associated with versatile sensing of biologically important substances, we here demonstrate discrimination of nucleotides by applying a cholesterol-armed-triazacyclononane host molecule. This molecular machine can discriminate ribonucleotides based on a twofold to tenfold difference in binding constants under optimized conditions including accompanying ions in the subphase and lateral surface pressures of its Langmuir monolayer. The concept of mechanical tuning of the host structure for optimization of molecular recognition should become a novel methodology in bio-related nanotechnology as an alternative to traditional strategies based on increasingly complex and inconvenient molecular design strategies.
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