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Título: | Toward long-term-dispersible, metal-free single-chain nanoparticles |
Autor: | Blázquez-Martín, Agustín CSIC; Ruiz-Bardillo, Ainara; Verde-Sesto, Ester CSIC ORCID; Iturrospe, Amaia CSIC ORCID; Arbe, Arantxa CSIC ORCID; Pomposo, José A. CSIC ORCID | Palabras clave: | Single-chain nanoparticles (SCNPs) Metal-free click chemistry Sym-dibenzo-1,5-cyclooctadiene-3,7-diyne (DIBOD) Strain-promoted azide−alkyne cycloaddition (SPAAC) |
Fecha de publicación: | 2023 | Editor: | Multidisciplinary Digital Publishing Institute | Citación: | Nanomaterials 13(8): 1394 (2023) | Resumen: | We report herein on a new platform for synthesizing stable, inert, and dispersible metal-free single-chain nanoparticles (SCNPs) via intramolecular metal-traceless azide–alkyne click chemistry. It is well known that SCNPs synthesized via Cu(I)-catalyzed azide–alkyne cycloaddition (CuAAC) often experience metal-induced aggregation issues during storage. Moreover, the presence of metal traces limits its use in a number of potential applications. To address these problems, we selected a bifunctional cross-linker molecule, sym-dibenzo-1,5-cyclooctadiene-3,7-diyne (DIBOD). DIBOD has two highly strained alkyne bonds that allow for the synthesis of metal-free SCNPs. We demonstrate the utility of this new approach by synthesizing metal-free polystyrene (PS)-SCNPs without significant aggregation issues during storage, as demonstrated by small-angle X-ray scattering (SAXS) experiments. Notably, this method paves the way for the synthesis of long-term-dispersible, metal-free SCNPs from potentially any polymer precursor decorated with azide functional groups. | Descripción: | This article belongs to the Section Nanofabrication and Nanomanufacturing. | Versión del editor: | https://doi.org/10.3390/nano13081394 | URI: | http://hdl.handle.net/10261/333965 | DOI: | 10.3390/nano13081394 | E-ISSN: | 2079-4991 |
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