Self-assembly of phosphorylated poly(ethyleneimine) for use as biomimetic templates in the formation of hybrid hollow silica spheres

Résultats de recherche: Contribution à un journal/une revueArticle

Résumé

The submicron scale hybrid hollow silica spheres have been fabricated by employing phosphorylated polyethyleneimine as template/scaffold/catalysis in a mild self-assembly biomineralization approach. The highly phosphorylated polyethyleneimine was shown to be a necessary prerequisite for in vitro formation of hollow silica spheres. In the presence of a neutral phosphate buffer, the monovalent anions H PO and divalent anions HPO acted not only as the buffer ions but also as ligands, regulating the shape and morphology of the PEI aggregation, which resulted in the final hollow morphology of silica. The hollow silica particles were very uniform in size, with a diameter of 0.8-1.0 μm and a shell thickness of ~ 70 nm.
langue originaleAnglais
Pages (de - à)163-166
Nombre de pages4
journalMaterials Letters
Volume74
Les DOIs
étatPublié - 1 mai 2012

Empreinte digitale

biomimetics
Biomimetics
Silicon Dioxide
Self assembly
self assembly
hollow
templates
Silica
silicon dioxide
Polyethyleneimine
Anions
Buffers
Negative ions
buffers
anions
Biomineralization
Polyetherimides
Scaffolds (biology)
Catalysis
catalysis

Citer ceci

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abstract = "The submicron scale hybrid hollow silica spheres have been fabricated by employing phosphorylated polyethyleneimine as template/scaffold/catalysis in a mild self-assembly biomineralization approach. The highly phosphorylated polyethyleneimine was shown to be a necessary prerequisite for in vitro formation of hollow silica spheres. In the presence of a neutral phosphate buffer, the monovalent anions H PO and divalent anions HPO acted not only as the buffer ions but also as ligands, regulating the shape and morphology of the PEI aggregation, which resulted in the final hollow morphology of silica. The hollow silica particles were very uniform in size, with a diameter of 0.8-1.0 μm and a shell thickness of ~ 70 nm.",
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Self-assembly of phosphorylated poly(ethyleneimine) for use as biomimetic templates in the formation of hybrid hollow silica spheres. / Zhao, R.; Su, B.-L.

Dans: Materials Letters, Vol 74, 01.05.2012, p. 163-166.

Résultats de recherche: Contribution à un journal/une revueArticle

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