The conventional method of dendrimer synthesis especially poly(propyleneimine) dendrimer (PPI) involves complicated reaction workup and tedious separation strategies. Since it has greater number of nitrogen atom in their structure, its applications are innumerable in different fields. But the PPI dendrimer is used once, it cannot be recycled for subsequent utility. In order to overcome these issues, for the first time divergent synthesis of poly(propyleneimine) dendrimer G₃ on silica coated magnetite has been achieved with structurally enhanced PPI dendrimer on core-shell type magnetic silica nanostructure. This nanohybrid material was characterized by using HRTEM, FTIR, XRD, TGA, XPS and VSM studies. Further, nitrogen concentration of PPI dendrimer was quantified by conductometric titration and Prussian blue complex methods. The probing of catalytic efficacy of structurally enhanced magnetite cored poly(propyleneimine) dendrimer G₃ as magnetically recyclable heterogeneous organic base catalyst was employed for representative reactions such as Knoevenagel condensation, Knoevenagel-Michael cyclocondensation and Henry reaction at ambient conditions. The catalyst was reused for minimum of eight cycles without significant loss of its catalytic activity.

树枝状大分子合成的常规方法，特别是聚（丙烯亚胺）树枝状大分子（PPI），涉及复杂的反应后处理和繁琐的分离策略。由于它的结构中有更多的氮原子，因此在不同领域中的应用无数。但是PPI树状聚合物仅使用一次，因此无法回收再利用。为了克服这些问题，聚（丙烯亚胺）树状大分子G ₃首次发散合成在芯-壳型磁性二氧化硅纳米结构上使用结构增强的PPI树状大分子已经实现了在二氧化硅涂覆的磁铁矿上的改性。通过使用HRTEM，FTIR，XRD，TGA，XPS和VSM研究对这种纳米混合材料进行了表征。此外，通过电导滴定法和普鲁士蓝络合物法定量PPI树状聚合物的氮浓度。在环境条件下，采用结构增强的磁铁矿芯聚（丙烯亚胺）树枝状聚合物G ₃作为可磁循环的非均相有机碱催化剂的催化效力的研究，用于代表性的反应，例如Knoevenagel缩合，Knoevenagel-Michael环缩合和Henry反应。催化剂可重复使用最少八个循环，而不会明显降低其催化活性。