Grigoriew H, Luboradzki R, Cunis S
Langmuir. 2004 Aug 31;20(18):7374-7. doi: 10.1021/la040024+.
The process of gelation of one of the monosaccharides, alpha-galactose-based gelator, with benzene as a solvent, has been studied. Small-angle X-ray scattering (SAXS) synchrotron time-resolved measurements were performed throughout the gelation process. The obtained SAXS measurements were elaborated using such methods as the fractal analysis, Fourier transform to get distance distribution functions, and simulation of a cluster model. We obtained the picture of the mesostructure development from the sol state to the gel state. Our results indicate that the fractal-type aggregates exist in the sol and the process of gelation is accompanied by the structural transition. This transition causes the aggregates to become smaller and denser, and their shapes differ from those of the sol. The complex method of SAXS data treatment we established seems to be a useful tool also for further studies of monosaccharide gelation.
对以α-半乳糖为基础的一种单糖凝胶剂在以苯为溶剂时的凝胶化过程进行了研究。在整个凝胶化过程中进行了小角X射线散射（SAXS）同步加速器时间分辨测量。使用分形分析、傅里叶变换以获得距离分布函数以及簇模型模拟等方法对获得的SAXS测量数据进行了详细阐述。我们得到了从溶胶状态到凝胶状态的介观结构发展情况。我们的结果表明，溶胶中存在分形型聚集体，凝胶化过程伴随着结构转变。这种转变导致聚集体变得更小、更致密，并且其形状与溶胶中的不同。我们建立的SAXS数据处理复杂方法似乎也是进一步研究单糖凝胶化的有用工具。
