【摘要】 合成了一种可聚合凝胶因子 (Gelator) 4 ,4′ 二 (α 甲基丙烯酰氧基 1,3 亚乙氧基羰基丙酰氨基 )二苯甲烷(BMDM) .BMDM能在二苯醚、甲苯、二甲苯、氯苯等含苯环的低极性溶剂中形成热可逆的物理凝胶 ,而在二甲基甲酰胺、乙醇和二氯甲烷等强极性溶剂中则易溶解 ,在乙醚、石油醚等非极性溶剂中不溶解 .FT IR和DSC研究该凝胶因子在二苯醚中形成的凝胶 ,发现该凝胶因子是通过氢键等次价键力相互作用而聚集、自我组装形成凝胶的 .利用溶胶 -凝胶相转变和DSC数据 ,研究了该有机凝胶的热力学参数和性质 ,BMDM在二苯醚中形成的凝胶聚集体间的范德华弱相互作用焓为ΔH =0 .8kJ·mol-1,凝胶 -溶胶相转变热焓为ΔH =2 2 .3kJ·mol-1.更多还原

【Abstract】 A polymerizable gelator of 4,4′ bis( α methylacryloyloxy 1,3 ethyleneoxycarbonylpropionamido) diphenylmethane (BMDM) has been synthesized, which can cause physical gelation in many aromatic solvents, including benzene, toluene, xylene and diphenyl ether. The presence of intermolecular hydrogen bonding in the organogels was proved by FT IR spectroscopy. The measurements of differential scanning calorimetry (DSC) also indicated that aggregation of the organogels occured as a result of cooperating noncovalent interactions such as intermolecular hydrogen bonding. It was found by DSC that the potential barrier for disassociation of the gel aggregates formed by van der Waals interaction is 0.8 kJ·mol -1 and the enthalpy of gel sol phase transition for fiber aggregated by hydrogen bonding is 22.3 kJ·mol -1 .更多还原