Synthetic strategies grafting from

The graft-to method of attaching dendrons numbers among the polymer-analogous synthetic strategies which start from a functionalised polymer backbone to which convergently preconstructed dendritic units of the desired generation can be fixed in a dense sequence (Fig. 2.16). 

Results from characterization of the constitution of the synthesized graft copolymers, compiled in Table 1, illustrate the versatility of the synthetic strategy outlined in the reaction scheme (Scheme 15) for the preparation and characterization of tailored graft copolyelectrolytes. 

Controlled polymerization techniques have enabled the preparation of well-defined polyelectrolytes of different architectures. Polyelectrolyte stars and cylindrical brushes are two typical examples with isotropic and anisotropic nature, respectively. Different synthetic strategies have been developed for these polyelectrolytes. However, the core first and grafting from strategies have turned out to be the most suitable methods for the synthesis of polyelectrolyte stars and cylindrical brushes. 

Scheme 5.14 Synthetic strategy for grafting hyperbranched glycopolymer from surfaces of MWCNTs by SCVCP of the inimer (AB ) and monomer (M) via ATRP. Reprinted with permission from Gao et al ...

Figure 1 Synthetic strategies forthe preparation of molecular bmshes and their analogs (a) grafting through (b) grafting onto (X and Y are functional groups capable of coupling) (c) grafting from (I is an initiating group) and (d) block copolymer self-assembly approach.

Synthetic strategies for the preparation of polymer brushes (A) physisorption, (B) grafting-to approach via reaction of appropriately end-functionalized polymers with complementary functional groups on the substrate surface, (C) grafting-from approach via surface-initiated polymerization. (Reprinted with permission from Barbey et al. 2009. Polymer Brushes via Surface-Initiated Controlled Radical Polymerization Synthesis, Characterization, Properties, and Applications. Chemical Reviews 109 (ll) 5437-5527 copyright (2009) American Chemical Society.)... 

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