LIU, R. C. W.; GOLDMANN, M.; FONTAINE, Pascal; DAILLANT, J.; PERROT, F.; PIGNAT, J.; CANTIN, S.

doi:10.1140/epje/i2006-10027-y

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LIU, R. C. W.

GOLDMANN, M.
Institut des Nanosciences de Paris [INSP]

FONTAINE, Pascal
Centre d'études et de recherches appliquées à la gestion [CERAG]

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European Physical Journal E: Soft matter and biological physics. 2006-08, vol. 20, n° 4, p. 387-394

EDP Sciences: EPJ

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The effect of subphase pH (5.5 and 10.5) on the structure of behenic-acid monolayers was investigated during Mg2+ adsorption by means of Grazing Incidence X-ray Diffraction (GIXD) and Brewster Angle Microscopy (BAM). The final phase corresponding to an ion superlattice commensurate to the behenic-acid cell is pH-independent. In contrast, the sequence of phases evidenced from the initial L-2-phase to this final state presents at pH 10.5 an additional stage associated to a film condensation toward the L'(2)-phase. The structures of the intermediate states preceding the superstructure nucleation are slightly different, both with a short-range fatty-acid order. Finally, a laser light effect that could result from visible light absorption by the inorganic complexes is evidenced in the final state as well as in the intermediate phases.< Réduire

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pH-dependent kinetics of MgCl2 adsorption under a fatty-acid Langmuir film

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