Publication
Title
Self-assembly of pluronic F127-silica spherical core-shell nanoparticles in cubic close-packed structures
Author
Abstract
A new ordered mesoporous silica material (COK-19) with cubic symmetry is synthesized by silicate polycondensation in a citric acid/citrate buffered micellar solution of Pluronic F127 triblock copolymer near neutral pH. SAXS, nitrogen adsorption, TEM, and electron tomography reveal the final material has a cubic close packed symmetry (Fm (3) over barm) with isolated spherical mesopores interconnected through micropores. Heating of the synthesis medium from room temperature to 70 degrees C results in a mesopore size increase from 7.0 to 11.2 nm. Stepwise addition of the silicate source allows isolation of a sequence of intermediates that upon characterization with small-angle X-ray scattering uncovers the formation process via formation and aggregation of individual silica-covered Pluronic micelles.
Language
English
Source (journal)
Chemistry of materials. - Washington, D.C, 1989, currens
Publication
Washington, D.C : American Chemical Society, 2015
ISSN
0897-4756
Volume/pages
27:15(2015), p. 5161-5169
ISI
000359499100003
Full text (Publisher's DOI)
Full text (open access)
UAntwerpen
Faculty/Department
Research group
Publication type
Subject
Affiliation
Publications with a UAntwerp address
External links
Web of Science
Record
Identification
Creation 05.10.2015
Last edited 10.07.2017
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