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研究了一种水溶性聚合物poly(2-hydroxyl-3-(2-hydroxyethylamino)propyl methacrylate)(PGEA)与一种经典的Dawson类多酸化合物K6[α-P2W18O62]·14H2O(P2W18)在pH4.6的醋酸-醋酸钠(HAc/NaAc)缓冲溶液中的组装化学.通过Zeta电位仪、激光粒度散射、扫描电子显微镜(SEM)和高分辨透射电子显微镜(HRTEM)等表征手段研究了PGEA/P2W18杂化体系的组装过程,以及PGEA/P2W18体系在不同单位电荷浓度比的电势情况.此外,探讨了在溶液中表面净电荷接近零时PGEA与P2W18的组装过程中粒度大小的变化、平均粒径分布及其杂化体系的表面形貌特征.结果表明,由于静电相互作用力的存在,PGEA和P2W18在10min后形成了超分子结构.随着反应时间的延长,PGEA/P2W18杂化组装的粒径主要分布在120～300nm范围内,并在40min后组装趋于稳定,形成了规整均一的具有类葡萄串状形貌的特征.深入理解两者之间的组装化学为下一步开展PGEA/P2W18杂化体系的跨膜研究打下了良好的基础.
The effects of poly (2-hydroxyl-3- (2-hydroxyethylamino) propyl methacrylate) (PGEA) and a classic Dawson polyacid compound K6 [α-P2W18O62] · 14H2O (P2W18) (HAc / NaAc) buffered solution with pH 6.0, and analyzed by Zeta potential, laser particle size scattering, scanning electron microscopy (SEM) and high resolution transmission electron microscopy (HRTEM) P2W18 hybrid system and the potential of the PGEA / P2W18 system at different unit charge concentration ratios.In addition, the change of particle size during the assembly process of PGEA and P2W18 was investigated when the surface net charge in the solution was near zero. The mean particle size Diameter distribution and surface morphology of the hybrid system.The results showed that due to the electrostatic interaction force, PGEA and P2W18 formed supramolecular structure after 10min.With the extension of the reaction time, PGEA / P2W18 hybrid assembly The particle size was mainly distributed in the range of 120-300 nm, and the assemblage tended to be stable after 40 min, forming a regular and homogeneous cluster-like appearance of grapes. In-depth understanding of the assembly chemistry between them was the next step to develop PGEA / P2W18 miscellaneous Transmembrane system of the system laid a good foundation.