Optimizing PEGylation of TiO2 Nanocrystals through a Combined Experimental and Computational Study.
Chem Mater
; 31(18): 7531-7546, 2019 Sep 24.
Article
em En
| MEDLINE
| ID: mdl-31875864
ABSTRACT
PEGylation of metal oxide nanoparticles is the common approach to improve their biocompatibility and in vivo circulation time. In this work, we present a combined experimental and theoretical study to determine the operating condition that guarantee very high grafting densities, which are desirable in any biomedical application. Moreover, we present an insightful conformational analysis spanning different coverage regimes and increasing polymer chain lengths. Based on 13C NMR measurements and molecular dynamics simulations, we show that classical and popular models of polymer conformation on surfaces fail in determining the mushroom-to-brush transition point and prove that it actually takes place only at rather high grafting density values.
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Base de dados:
MEDLINE
Idioma:
En
Revista:
Chem Mater
Ano de publicação:
2019
Tipo de documento:
Article
País de afiliação:
Itália