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Control over calcium carbonate phase formation by dendrimer/surfactant templates
Citation
Donners, JJJM and Heywood, BR and Meijer, EW and Nolte, RJM and Sommerdijk, NAJM, Control over calcium carbonate phase formation by dendrimer/surfactant templates, Chemistry: A European Journal, 8, (11) pp. 2561-2567. ISSN 0947-6539 (2002) [Refereed Article]
Copyright Statement
Copyright WILEY-VCH Verlag GmbH, 69451 Weinheim, Germany, 2002
Official URL: http://dx.doi.org/10.1002/1521-3765(20020603)8:11<...
DOI: doi:10.1002/1521-3765(20020603)8:11<2561::AID-CHEM2561>3.0.CO;2-3
Abstract
Poly(propylene imine) dendrimers that are modified with long alkyl chains self-assemble to form welldefined aggregates. The geometry and surface chemistry of the dendrimer assemblies can be varied through the addition of surfactants. These dendrimer/surfactant aggregates can be tuned to template the formation of the different phases of calcium carbonate. The use of octadecylamine results in the formation of polyhedral aggregates that become embedded within an amorphous calcium carbonate phase that persists in competition with the thermodynamic product, calcite. In combination with hexadecyltrimethylammonium bromide, small spherical aggregates are formed that induce the formation of vaterite. The use of the negatively charged surfactant SDS results in growth retardation by the Ca2+-induced agglomeration of dendrimer/surfactant aggregates into giant spherical particles. Eventually these particles become overgrown by rhombohedral calcite.
Item Details
Item Type: | Refereed Article |
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Keywords: | amorphous materials, biomimetic synthesis, calcium carbonate, dendrimers self-assembly |
Research Division: | Chemical Sciences |
Research Group: | Macromolecular and materials chemistry |
Research Field: | Structure and dynamics of materials |
Objective Division: | Expanding Knowledge |
Objective Group: | Expanding knowledge |
Objective Field: | Expanding knowledge in the chemical sciences |
UTAS Author: | Heywood, BR (Professor Brigid Heywood) |
ID Code: | 104459 |
Year Published: | 2002 |
Web of Science® Times Cited: | 98 |
Deposited By: | Research Division |
Deposited On: | 2015-11-12 |
Last Modified: | 2015-12-22 |
Downloads: | 0 |
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