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基于偏苯三甲酸和对羟基吡啶合成了一种具有支化结构的凝胶因子,采用氢核磁、红外光谱及元素分析确认其结构.该凝胶因子熔体在冷却时可拉出数厘米的长丝,表明分子间形成了强相互作用.将凝胶因子的水溶液分别在25℃和0℃下自然冷却、以及在25℃的超声作用下冷却,凝胶因子自组装成纤维状网络结构并使水凝胶化,纤维网络的密度及凝胶的稳定性均按上述凝胶形成条件顺序增加.通过干凝胶能谱面扫描分析发现氮元素主要处于纤维内部,表明两亲性凝胶因子对分子自组装的影响.通过分析邻苯二甲酸与对羟基吡啶复合物、偏苯三甲酸的单晶结构表明,凝胶因子基于多种氢键识别作用组装成纤维结构.干凝胶的粉末X射线衍射分析表明在凝胶化过程中凝胶因子沿着特定方向进行组装.
Based on trimellitic acid and p-hydroxypyridine, a branched gel was synthesized and its structure was confirmed by 1HNMR, IR and elemental analysis. The gel-factor melt could pull out several centimeters Filament, indicating a strong interaction between the molecules. The aqueous solution of the gel factor was naturally cooled at 25 ° C and 0 ° C, respectively, and cooled under ultrasound at 25 ° C. The gel factor self-assembled into a fibrous network structure So that the hydrogellation, the density of the fiber network and the stability of the gel according to the order of the gel forming conditions increased by scanning gel X-ray spectrum analysis found that nitrogen is mainly in the fiber, indicating that the amphiphilic gel factor On the self-assembly of the molecule.By analyzing the single crystal structure of trimellitic acid by analyzing the complex of phthalic acid and p-hydroxy pyridine, the gel factor was assembled into a fibrous structure based on the recognition of various hydrogen bonds.The powder of xerogel X-ray diffraction analysis showed that the gelling agents were assembled in a particular direction during gelation.