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- W2893720787 abstract "A simple, low-cost and label-free strategy for detecting lithocholic acid (LCA) was designed at the liquid crystals (LCs)/aqueous interface via competitive host-guest inclusion. In this method, sodium dodecyl sulfate (SDS) was initially adsorbed on the fluid interface and induced LCs to adopt the homeotropic ordering. Inclusion complexation of SDS and β-cyclodextrin (β-CD) disturbed interaction between LCs and SDS and evoked LCs to keep a tilted alignment. When injecting LCA into the mixed solution of SDS and β-CD, SDS excluded from the cavity of β-CD by competitive host-guest inclusion and could be re-adsorbed at the LCs/aqueous interface, resulting in the orientational transition of LCs from tilted to homeotropic state. Correspondingly, a bright-to-dark optical response was observed under polarized optical microscope (POM). The as-prepared LCs-based sensor could detect LCA as low as about 2 μM in aqueous solution. Moreover, the practicability of the approach was validated by monitoring the known amount of LCA in human urine. This work offers an appealing approach for the detection of LCA which has a great potentiality in clinical diagnosis." @default.
- W2893720787 created "2018-10-05" @default.
- W2893720787 creator A5054631998 @default.
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- W2893720787 date "2019-01-01" @default.
- W2893720787 modified "2023-09-30" @default.
- W2893720787 title "Liquid crystals-based sensor for the detection of lithocholic acid coupled with competitive host-guest inclusion" @default.
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- W2893720787 doi "https://doi.org/10.1016/j.colsurfb.2018.09.071" @default.
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