Cu(I)-catalyzed Huisgen click reactions between lipophilic polymer (tri-arm azidofunctionalized polystyrene) and hydrophilic polymer (copolymer of styrene sulfonate sodium and propargyl methacrylate) were investigated and hollow capsules, consisting of composite polymer nanofilms were obtained in chloroform-water biphasic solution. Since the lipophilic polymer, or hydrophilic polymer and copper catalyst were present in the oil or aqueous phase, respectively, the cross-linking reaction proceeded only at the phase interface. The combination of lipophilic and hydrophilic polymers produced hollow capsules consisting of nanofilms with lipophilic core and hydrophilic shell.
International Letters of Chemistry, Physics and Astronomy (Volume 11)
M. Ashaduzzaman et al., "Investigation of Click Reaction at an Oil-Water Interface Using Hydrophobic and Hydrophilic Polymers", International Letters of Chemistry, Physics and Astronomy, Vol. 11, pp. 31-39, 2013