Novel polymeric betaine based on tridecylaminocrotonate and methacrylic acid was synthesized by Michael addition reaction. The obtained products were abbreviated as CROtriDA-MAA and with respect to its potassium salt as CROtriDA-MAA-K. The structure of CROtriDA-MAA was established by ¹H NMR and FTIR spectroscopy. The hydrodynamic, molecular and conformational properties of CROtriDA-MAA-K in solutions and morphology in solid state were evaluated by methods of GPC, DLS, zeta-potential, surface enhanced ellipsoidal microscopy (SEEC), optical microscopy. Meanwhile, the long alkyl “tails” (tridecyl) located in side polymeric chains are responsible for self-assembling behavior. Several types of self-assembled structures in water at different pH and in water–DMSO mixture were observed. The dendritic structure with wide trunks and few side branches is formed at pH 3. The “Maltese cross-like” aggregates were found at pH 6.5. The tree-like fractal patterns are formed at pH 12. The self-assembled coiled-ribbon-like and tubular-like aggregates were observed in water–DMSO mixtures.

通过迈克尔加成反应合成了基于十三烷基氨基巴豆酸酯和甲基丙烯酸的新型聚合物甜菜碱。所得产物的缩写为CROtriDA-MAA，钾盐的缩写为CROtriDA-MAA-K。CROtriDA-MAA的结构由¹建立1 H NMR和FTIR光谱。通过GPC，DLS，ζ电势，表面增强椭圆体显微镜（SEEC），光学显微镜等方法评估了CROtriDA-MAA-K在溶液中的流体力学，分子和构象性质以及固态形态。同时，位于聚合物侧链上的长烷基“尾巴”（十三烷基）负责自组装行为。在不同pH值的水中以及在水与DMSO的混合物中观察到了几种类型的自组装结构。pH值为3时，会形成具有较宽的主干和很少的侧枝的树状结构。在pH值为6.5时发现“马耳他十字形”聚集体。pH值为12时会形成树状的分形图案。在水-DMSO混合物中观察到自组装的盘绕状和管状状聚集体。