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

Research output: Contribution to journalArticle

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.
Original languageEnglish
Pages (from-to)163-166
Number of pages4
JournalMaterials Letters
Volume74
DOIs
Publication statusPublished - 1 May 2012

Fingerprint

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

Cite this

@article{52eb93f47de04741bcc63c3f08abcda1,
title = "Self-assembly of phosphorylated poly(ethyleneimine) for use as biomimetic templates in the formation of hybrid hollow silica spheres",
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.",
author = "R. Zhao and B.-L. Su",
year = "2012",
month = "5",
day = "1",
doi = "10.1016/j.matlet.2012.01.023",
language = "English",
volume = "74",
pages = "163--166",
journal = "Materials Letters",
issn = "0167-577X",
publisher = "Elsevier",

}

TY - JOUR

T1 - Self-assembly of phosphorylated poly(ethyleneimine) for use as biomimetic templates in the formation of hybrid hollow silica spheres

AU - Zhao, R.

AU - Su, B.-L.

PY - 2012/5/1

Y1 - 2012/5/1

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=84857003165&partnerID=8YFLogxK

U2 - 10.1016/j.matlet.2012.01.023

DO - 10.1016/j.matlet.2012.01.023

M3 - Article

VL - 74

SP - 163

EP - 166

JO - Materials Letters

JF - Materials Letters

SN - 0167-577X

ER -