期刊
NANOSCALE
卷 9, 期 30, 页码 10854-10860出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7nr02949g
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资金
- NIH [GM077173]
- NSF [CHE-1506725]
- Korea Institute of Science and Technology (KIST) Open Research Program
- Nano.Material Technology Development Program through the National Research Foundation of Korea (NRF) - Ministry of Science, ICT and Future Planning [2016 M3A7B4027223, 2016 M3A7B4905609]
A chip-based platform for laser desorption/ionization mass spectrometry (LDI-MS) analysis of small molecules was developed by utilizing layer-by-layer (LBL) assembly of MoS2 nanoflakes and polyallylamine on an arbitrary substrate. The LDI-MS efficiency of small molecules on MoS2 films increased as a function of LBL assembly cycles until reaching a saturation point. The optimized MoS2 nanoflake film exhibits high LDI-MS efficiency, salt tolerance, reusability and uniform ionic signal distribution, and its performance was further enhanced by surface modification with perfluoroalkanes mimicking a clathrate nanostructure.
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