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. 2014 Jun 4;5:4043. doi: 10.1038/ncomms5043

Figure 4. Self-assembly due to complexation with I-C10F21.

Figure 4

(a) SAXS patterns of I-C10F21 (1), C-[CH2-(OCH2CH2)29-NH3+Cl−]4 (2, indicating poor self-assembly by segregation of the ionic end-groups from the polyethylene glycol-core), and supramolecular complex C-[CH2-(OCH2CH2)29-NH3+Cl−]4·4 I-C10F21 (3, showing highly ordered self-assembly). Corresponding 2D SAXS (right) shows poor overall order for C-[CH2-(OCH2CH2)29-NH3+Cl−]4 and high overall order for C-[CH2-(OCH2CH2)29-NH3+Cl−]4·4 I-C10F21. (b) XRD shows (1) fluoroalkyl chain order for pure I-C10F21, (2) Polyethylene glycol-crystallization for pure C-[CH2-(OCH2CH2)29-NH3+Cl−]4 and (3) lateral packing due to the fluoroalkyl chains in the supramolecular complex C-[CH2-(OCH2CH2)29-NH3+Cl−]4·4 I-C10F21. (c) TEM micrograph of C-[CH2-(OCH2CH2)29-NH3+Cl−]4·4 I-C10F21, showing lamellar smectic-like order with periodicity of 11.4 nm (scale bar, 50 nm). (d) Cartoon showing the self-assembly mechanism of the halogen-bonded complex.