Self-sorting multi-gelator gels-mixing and ageing effects in thermally addressable supramolecular soft nanomaterials
Self-sorting multi-gelator gels-mixing and ageing effects in thermally addressable supramolecular soft nanomaterials
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DOI：
10.1039/c1sm05316g
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发表时间：
2011-01-01
期刊：
影响因子：
3.4
通讯作者：
Smith, David K.
中科院分区：
文献类型：
--
作者：
Smith, Michelle M.;Smith, David K.
描述了含有受保护山梨醇衍生物和胆固醇基凝胶的多凝胶凝胶的自分选。利用差示扫描量热法（DSC）、核磁共振波谱和扫描电子显微镜（SEM），我们展示了如何在分子、纳米/中观和宏观长度尺度上检测凝胶内两个独立纳米级网络的自分选。DSC使我们能够观察到与自分选凝胶中每个单独凝胶网络相关的热特性。我们还报道了凝胶中的一种成分表现出显著的和不寻常的老化效应，凝胶纳米结构的形态随着时间的推移而变化，并导致材料具有增强的热稳定性。这些特性转移到多凝胶凝胶，也表现出增强的凝胶性能老化。综上所述，本文的结果证明了单个凝胶如何在多凝胶凝胶软材料中独立作用。
The self-sorting of a multi-gelator gel containing a protected sorbitol derivative and a cholesterol-based gelator is described. Using differential scanning calorimetry (DSC), NMR spectroscopy, and scanning electron microscopy (SEM), we have shown how the self-sorting of two independent nanoscale networks within the gel can be detected at molecular, nano/meso and macro length-scales. DSC allows us to observe the thermal characteristics associated with each individual gelator network within the self-sorted gel. We also report that one component within the gel exhibits significant and unusual ageing effects, with the morphology of the gel nanostructure evolving over time, and leading to materials with enhanced thermal stabilities. These properties are transferred into the multi-gelator gel, which also exhibits enhanced gel properties on ageing. In combination, the results in this paper demonstrate how individual gelators can act independently within multi-gelator gel soft materials.