Fig. 2: Interfacial assembly of PAN enabled by CSAA.
From: Chaperone solvent-assisted assembly of polymers at the interface of two immiscible liquids
a Oil-water IFT evolution versus [PAN]DMSO, where the [DMSO]oil is identical for every curve. b, c Pendent-drop retraction of oil droplet: b, DMSO/toluene mixture without PAN; c, Toluene mixed with PAN-DMSO solution, [PAN]DMSO = 4 mg mL-1. d Snapshots in chronological order showing the visible diffusion of chaperone DMSO across the oil-water interface and the resultant interfacial assembly of PAN. The oil droplet is toluene mixed with PAN-DMSO solution, where [PAN]DMSO = 1 mg mL-1, [DMSO]oil = 33.66 wt.%, outer phase is water. e–g The assembly of toluene droplets with different [DMSO]oil (e) 15.34 wt.% and (g) 1 wt.%. The amount of PAN molecules in both systems is the same, as shown in (f). h Demonstration of IC dependance on aging time. i IC evolution influenced by the [DMSO]oil. The aging time for all measurements is 1200 s. The dashed line is to guide the eye. j Influence of [PAN]DMSO on IC. Inset, interfacial assembly is indicated by the wrinkling when withdrawing the oil droplet. All scale bars, 1 mm. Values in h and i represent the mean, and the error bars represent the SD of the three measured values of each sample (n = 3). The IC of three replicate samples was measured by an identical tensiometer method in h.
