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Cyclodextrin-based superparamagnetic host vesicles as ultra-sensitive nanobiocarriers for electrosensing

AuthorsMuñoz Martín, José M. ; Crivillers, Núria ; Ravoo, Bart Jan; Mas Torrent, Marta
Issue Date17-Apr-2020
PublisherRoyal Society of Chemistry (UK)
CitationNanoscale: 10.1039/D0NR01702G (2020)
AbstractA carbohydrate-based nanohybrid of superparamagnetic nanoparticles embedded in unilamellar bilayer vesicles of amphiphilic β-cyclodextrins (magnetic cyclodextrin vesicles, mCDVs) has been engineered as a novel magnetic biorecognition probe for electrosensing. As a proof-of-concept, the synergistic properties of mCDVs on a magnetic nanocomposite carbon-paste electrode (mNC–CPE) have been used for the picomolar determination of thyroxine (T4) as a model analyte (taking advantage of the host-guest chemistry of β-cyclodextrin and T4), resulting in the most sensitive electrochemical T4 system reported in the literature. Accordingly, a first demonstration of mCDVs as water-soluble magnetic nanobiocarriers has been devised foreseeing their successful use into electrochemical biosensing platforms for the supramolecular trace determination of various targets.
Publisher version (URL)http://dx.doi.org/10.1039/D0NR01702G
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