结晶驱动自组装的研究进展

图  7  氢键相互作用分级组装的初始研究:(a) PMVSOH (HD), P2VP (HA), PtBA (N), PMVS (X) 和PFS的化学结构; (b) 组装过程图示; (c~e) 形成的超级胶束蒸发溶剂后的TEM图:(c) 在异丙醇中混合HD均聚物 (PMVSOH105) 和N-HA-N (540 nm) 三嵌段共胶束 (羟基与吡啶基的物质的量之比为5:1) 以及HD种子 (M (PFS20-b-PMVSOH120), 37 nm) 和N-HA-N (1.4 μm) 三嵌段共胶束 (羟基与吡啶基的物质的量比为 (d)20:1, (e)1:2);(c) 和 (d) 中的插入部分分别为吸附上HD均聚物和晶种之后的HA片段的高分辨图 (图中标尺为500 nm, 插入部分的标尺为100 nm); 片段HA为 (PFS32-b-P2VP448), N为M (PFS20-b-PtBA280)[58]

Figure  7.  Initial studies of hierarchical assembly via H-bonding interactions:(a) Chemical structures of PMVSOH (HD), P2VP (HA), PtBA (N), PMVS (X) and PFS; (b) Schematic of the assembly processes; (c~e) TEM images after solvent evaporation of supermicelles formed by (c) mixing HD homopolymer (PMVSOH105) with N-HA-N (540 nm) triblock comicelles (hydroxyl/pyridyl group ratio 5:1);and HD seeds (M (PFS20-b-PMVSOH120), 37 nm) with N-HA-N (1.4 μm) triblock comicelles (hydroxyl/pyridyl group ratio:(d) 20:1 and (e) 1:2) in iPrOH; Insets in (c) and (d) are high magnification images of the HA segments after the adsorption of HD homopolymer and seeds, respectively.Scale bar, 500 or 100 nm (inset).Segments:HA=(PFS32-b-P2VP448) and N=M (PFS20-b-PtBA280)[58]