Phosphorus based dendrimer structure

The ligands 7 with R = 4-hydroxyphenyl have been grafted to the periphery of phosphorus-based dendruners [67-71] by reaction of the phenol function with the surface P-Cl bonds as exemplified for the first generation in Scheme 5.7 [72]. Dendrimers of generation 1—4 (G -7, n — 1-4) have been synthesized, the structure of G2-7 being shown in the Scheme 5.8. 

Another area of interest in recent years is that of dendritic structures (dendrimers) to which P compounds have made a significant contribution. Following the discovery in 1990 of dendrimers based on phosphonium derivatives, various phosphorus compounds have now been obtained. These contain P groups which act as initiator cores or as subsequent branching points (12.254), (8.356) [102-106]. 

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