International Journal of Molecular Sciences | |
Supported Phospholipid Bilayer Interaction with Components Found in Typical Room-Temperature Ionic Liquids – a QCM-D and AFM Study |
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关键词: Quartz crystal microbalance with dissipation (QCM-D); Supported phospholipid bilayer (SPB); Room-temperature ionic liquid (RT-IL); Atomic force microscopy (AFM); 1; 2-dielaidoylphosphatidylcholine (DEPC); | |
DOI : 10.3390/ijms9040498 | |
来源: mdpi | |
【 摘 要 】
Quartz crystal microbalance with dissipation (QCM-D) monitoring and atomic force microscopy (AFM) were combined to evaluate the defects created by an ionic liquid anion and a cation in a supported phospholipid bilayer composed of zwitterionic lipids on a silica surface. The cation 1-octyl-3-methyl imidazolium (OMIM+) was shown to remove lipids from the bilayer, increase the roughness to approximately 2.8 nm (~0.2 for stable supported bilayer) and possibly redeposit lipids with entrapped water. The anion bis(trifluoromethylsulfonyl)imide (Tf2N-) was found to leave distinct defects within the bilayer that had large pore-like interiors which left the surrounding bilayer intact. However, the ionic liquid 1-butyl-1-methyl pyrrolidinium bis(trifluoromethylsulfonyl)imide (BMP-Tf2N) formed a film over the supported bilayer. This work demonstrates, for the first time, the direct effects common components of ionic liquids have on a supported phospholipids bilayer.
【 授权许可】
CC BY
© 2008 by MDPI
【 预 览 】
Files | Size | Format | View |
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RO202003190058356ZK.pdf | 712KB | download |