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Issue 24, 2011
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Facile preparation of CaCO3 nanocrystals with unique morphologies controlled by supramolecular complexes

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Abstract

A facile and effective method to synthesize dendrite-shaped calcium carbonate (CaCO3) nanocrystals in aqueous solutions of dodecyltrimethylammonium bromide (DTAB) and β-cyclodextrin (β-CD) is reported. It has been demonstrated that the supramolecular host–guest complexes formed by DTAB and β-CD play a key role in the fabrication of these unique CaCO3 nanocrystals. In order to systematically study the effect of the cationic surfactant, 1-dodecyl-3-methylimidazolium bromide (C12mimBr) and didodecyltrimethylammonium bromide (DDAB) were also used. The results show that the structures of the complexes formed by different cationic surfactants with β-CD have a strong impact on the final morphologies of the CaCO3 nanocrystals. Moreover, the interaction energies between β-CD and cationic surfactant molecules were calculated using molecular mechanics, and a possible mechanism for the formation of CaCO3 nanocrystals was proposed.

Graphical abstract: Facile preparation of CaCO3 nanocrystals with unique morphologies controlled by supramolecular complexes

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Publication details

The article was received on 04 Jul 2011, accepted on 18 Aug 2011 and first published on 30 Sep 2011


Article type: Paper
DOI: 10.1039/C1CE05835E
Citation: CrystEngComm, 2011,13, 7252-7257
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    Facile preparation of CaCO3 nanocrystals with unique morphologies controlled by supramolecular complexes

    H. Jia, X. Bai and L. Zheng, CrystEngComm, 2011, 13, 7252
    DOI: 10.1039/C1CE05835E

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