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Magnetic–Fluorescent Colloidal Nanobeads: Preparation and Exploitation in Cell Separation Experiments
Author(s) -
Di Corato Riccardo,
Piacenza Philomena,
Musarò Mariarosaria,
Buonsanti Raffaella,
Cozzoli Pantaleo Davide,
Zambianchi Massimo,
Barbarella Giovanna,
Cingolani Roberto,
Manna Liberato,
Pellegrino Teresa
Publication year - 2009
Publication title -
macromolecular bioscience
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.924
H-Index - 105
eISSN - 1616-5195
pISSN - 1616-5187
DOI - 10.1002/mabi.200900154
Subject(s) - magnetic separation , fluorescence , magnetic nanoparticles , nanoparticle , nanotechnology , polymer , bead , materials science , chemistry , optics , physics , metallurgy , composite material
Nanostructures displaying fluorescence and magnetic properties at the same time are potentially useful for achieving simultaneous bio‐separation and bio‐sensing (e.g., magnetic separation coupled with multiplexing optical detection of different tumour cell populations). Spherical nanobeads that display both fluorescent and magnetic features are reported; they are fabricated by grafting fluorescent oligothiophene molecules to an amphiphilic polymer that is then used to enwrap iron oxide nanoparticles, which acts as the magnetic domain. By tuning experimental conditions, control over the number of magnetic nanoparticles per bead and over the bead diameter (30–400 nm) was achieved. A cell separation efficiency of the level required for cell sorting applications is also reported.