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Aggregation of semifluorinated alkanes in cyclic organic solvents: A SAXS study

Benoît Gouze 1 Thibaud Nardin 1 Olivier Diat 2 Julien Cambedouzou 1, 3
1 L2ME - Etude de la Matière en Mode Environnemental
ICSM - UMR 5257 - Institut de Chimie Séparative de Marcoule
2 L2IA - Ions aux Interfaces Actives
ICSM - UMR 5257 - Institut de Chimie Séparative de Marcoule
Abstract : Semifluorinated alkanes (SFA) are diblock molecules able to self-assemble in various organic media due to their fluorophilic/fluorophobic interactions. Such mixtures accordingly represent a model system for the further elaboration of soft-templated inorganic materials in totally anhydrous media. The aggregation behavior of four SFA species has been studied in two different organic and cyclic solvents in function of temperature by small angle X-ray scattering (SAXS). As long as the SFA-solvent mixtures remain in the liquid state, SAXS patterns reveal an aggregation behavior dependent on temperature and concentration, and on the internal structure of the SFA. We identify the relevant parameters governing the aggregation of these molecules based on the simulation of SAXS data versus temperature.
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Benoît Gouze, Thibaud Nardin, Olivier Diat, Julien Cambedouzou. Aggregation of semifluorinated alkanes in cyclic organic solvents: A SAXS study. Colloid and Interface Science Communications, Elsevier, 2019, 31, pp.100189. ⟨10.1016/j.colcom.2019.100189⟩. ⟨hal-02270639⟩

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