Abstract
This paper presents a facile procedure to fabricate uniform-sized hollow silica nanoparticles (SNP) under a mild condition by using cationic spherical polyelectrolyte brushes (SPB) with a polystyrene (PS) core and densely grafted poly(2-aminoethyl methacrylate hydrochloride) (PAEMH) brush shell as a catalytic template. By changing the brush layer thickness of SPB, hollow SNP with different silica shell thickness could be easily obtained. This method provides a new way for the preparation of hollow SNP without additional catalyst. The obtained hollow SNP exhibited a high-drug encapsulation efficiency (80%) for doxorubicin hydrochloride (DOX), should be of significance in the fields of drug delivery, cancer therapy, and bioimaging.
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Funding
This work is financially supported by the NSFC (Grant nos.51761135128 and 51773061), the Key Scientific and Technological Project of Xinjiang Bingtuan (2018AB025), and the Fundamental Research Funds for the Central Universities (22221818010 and 222201917013).
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Fu, Z., Zhou, Q., Li, L. et al. Preparation of hollow silica nanoparticles using cationic spherical polyelectrolyte brushes as catalytic template. Colloid Polym Sci 298, 879–886 (2020). https://doi.org/10.1007/s00396-020-04627-2
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DOI: https://doi.org/10.1007/s00396-020-04627-2