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Issue 44, 2015
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Multiscale study of the influence of cationic surfactants on amorphous calcium phosphate precipitation

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Abstract

The influence of monomeric and micellar concentrations of the cationic monomeric, dodecyltrimethylammonium bromide (DTAB), and the corresponding dimeric, bis(N,N-dimethyl-N-dodecyl)ethylene-1,2-diammonium dibromide (12-2-12), surfactants on the formation and transformation of amorphous calcium phosphate (ACP) was investigated. The combination of microscopy (AFM and TEM) and light scattering techniques (size and zeta potential measurements) enabled, for the first time, the simultaneous monitoring of the effect that additives exert on different length scales during CaP formation in solution – from prenucleation clusters and ACP particles to the crystalline phase. Depending on their aggregation state (monomers or micelles) and the geometry of the aggregate (spherical or elongated micelles), DTAB and 12-2-12 have exhibited different effects on the rate of ACP transformation, as well as on the morphology of the amorphous and crystalline phases. It was shown that the effect of surfactants on the precipitation process observed on the microscale could be a result of different pathways on the nanoscale. The obtained results may have implications for the understanding of the general mechanism of inorganic–organic interactions underlying the biomineralization processes, as well as for materials science.

Graphical abstract: Multiscale study of the influence of cationic surfactants on amorphous calcium phosphate precipitation

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Publication details

The article was received on 29 Jul 2015, accepted on 07 Oct 2015 and first published on 07 Oct 2015


Article type: Paper
DOI: 10.1039/C5CE01516B
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CrystEngComm, 2015,17, 8529-8548
  • Open access: Creative Commons BY-NC license
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    Multiscale study of the influence of cationic surfactants on amorphous calcium phosphate precipitation

    A. Selmani, I. Coha, K. Magdić, B. Čolović, V. Jokanović, S. Šegota, S. Gajović, A. Gajović, D. Jurašin and M. Dutour Sikirić, CrystEngComm, 2015, 17, 8529
    DOI: 10.1039/C5CE01516B

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