Figure 5: Sunflower-like assemblies with partially functionalized petals.
From: A design strategy for the hierarchical fabrication of colloidal hybrid mesostructures
(a) TEM image of sample 5a obtained by the addition of the partially quaternized block copolymer PFS30-b-P2VP300Q to 4a in 2-PrOH. (d) TEM image of sample 5d obtained by addition of PFS30-b-P2VP300Q to 4b in 2-PrOH. Both solutions were aged for 24 h at room temperature. (b,e) Treatment of 5a and 5d in 1:1 2-PrOH/H2O with negatively charged Au NPs, led to the structures 5b (b) and 5e (dark-field TEM image, e, respectively. (c) Higher magnification image from a different position of the same grid used to obtain the image in b. (f) Higher magnification image from a different position of the same grid used to obtain the image in e. Scale bars, 250 nm.
