A bulk phase with GMO/water (W) at a weight ratio of 65/35 was prepared to study the effect of HEA integration on the self-assembled structure. The temperature response of the sample between 10 and 95°C was characterized with SAXS in the presence and absence of HEA to investigate its effect on the phase behavior (Figure ). The SAXS pattern of the sample without HEA at 25 °C showed 8 Bragg peaks corresponding to the formation of the Pn3m-type cubic structure (see Table in SI). Increasing the temperature from 10 to 60 °C leads to a shift of the Bragg peaks to higher q-values, reflecting a decrease of the lattice constant of the Pn3m-type structure from 9.4 to 7.8 nm (calculated with Equation. 2 in SI).