Essay --

steps where addition of each looping produces a higher contemporaries of dendrimer (Tomalia and Frechet, 2001). The synthesis method used for dendrimer proviso permit almost entire control over the critical molecular design parameters such as size, shape, surface/interior chemistry, flexibility, and topology. The dendrimers tolerate be synthesized by using three different go ones (Crespo et al., 2005).1.Divergent approach2. confluent approach3.Double stage convergent approachDivergent approach In this method, dendrimer grows outwards from a multifunctional core molecule towards periphery. As a result of this growth, each new iterative reaction is characterized by the generation of an exponentially increasing number of functional groups on the periphery and soprano the molecular weight than the previous layer (Vogtle et al., 1978). The reaction steps can be repeated to increase the size of dendrimers as required. Many problems guide from ramp reactions and incomplete react ions of the end groups that lead to structural defects. To prevent side reactions and for completion o...