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Figure 4
pH-dependent phase transition in an amphiphilic peptide mesophase. Left: time-resolved in-house SAXS measurement (background corrected) of in situ dialysis with 3D-printed dialysis chamber from pH 7.5 to pH 4.7 of IDPAs shows a transition from micellar rods to spherical micelles in less than 6 h. Scattering curves are snapshots at 0, 140, 160, 180 and 220 min with 20 min exposure time each. Solid lines are convoluted reference scattering curves from high-resolution SAXS beamlines (data were taken with an automated sample robot at DESY, Hamburg, Germany). Right: pH-dialysis back from pH 4.7 to pH 7.5 shows the reversibility of the transition in the dialysis chamber. Scattering curves are snapshots at 0, 260, 240, 340 and 520 min with 20 min exposure time each.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 29| Part 4| July 2022| Pages 1014-1019
https://doi.org/10.1107/S1600577522005136
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