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(a) Small PB spheres of S540B173T137 in acetone/isopropanol (60:40 v/v) and (b) large PB spheres of S510B539T154 in acetone/isopropanol (85:15 v/v). (c–e) S510B539T154 form thin, S307B385T81 medium and S307B530T75 thick PB double helices all in acetone/isopropanol (60:40 v/v). (f) Core-shell-corona for S307B530T75 in n-hexane/isopropanol (50:50 v/v). Scale bars, 100 nm.
