pH-Triggered Self-Assembly of Zwitterionic Polyglycerol Dendrons into Discrete and Highly Stable Supramolecular Dendrimers in Water
作者:Michael Merschky、Monika Wyszogrodzka、Rainer Haag、Carsten Schmuck
DOI:10.1002/chem.201002658
日期:2010.12.27
dimerization: Zwitterionic polyglycerol dendrons self‐assemble into discrete and well‐defined dimers in water as shown by dynamic light scattering (DLS), gel permeability chromatography (GPC), and DOSY NMR spectroscopy. However, self‐assembly occurs only at neutral pH as either protonation or deprotonation destroys the self‐complementary zwitterionic binding motif in the core of the dendrimer. Hence, structure
pH依赖的二聚化:两性离子聚甘油树枝状分子在水中自组装成离散且定义明确的二聚体,如动态光散射(DLS),凝胶渗透色谱(GPC)和DOSY NMR光谱所示。但是,自组装仅在中性pH下发生,因为质子化或去质子化都会破坏树枝状聚合物核心中的自我互补性两性离子结合基序。因此,可以通过改变溶液的pH来回触发结构形成。