Ultrasound-assisted synthesis of hybrid nanostructures using RAFT polymerization from the surface of quantum dots

Surface-Initiated Controlled Radical Polymerization: State-of-the-Art, Opportunities, and Challenges in Surface and Interface Engineering with Polymer Brushes

“…A more common approach to surface-RAFT polymerization is to anchor the RAFT agent to the surface and to have a free initiator in solution. This approach has been used to graft polymer brushes from carbon nanotubes, , quantum dots, − gold surfaces, − iron oxide nanoparticles, − montmorillonite, , halloysite nanotubes, , graphene, ITO, ,,− polymer substrates, ,− silica, − BaTiO 3 , ZnO/ZnS, carbon fibers, TiO 2 nanoparticles, and stainless steel . In these solution-initiated, surface-RAFT polymerizations, the researcher has the choice to anchor the CTA either via the reinitiating “R” group of the RAFT agent or the stabilizing “Z” group.…”

“…The former approach can be synthetically more challenging but has been used for a range of substrates including CNTs, carbon fibers, silica, − ,,− and Fe 2 O 3 nanoparticles. , The second approach has the advantage that it facilitates purification of the CTA and helps to avoid common side reactions such as the condensation of CTA-bound alkoxysilane groups. This appears to be the more popular approach and has been used to anchor CTAs onto, for example, Fe 2 O 3 , and silica nanoparticles, − ,,, quantum dots, , cellulose, halloysite nanotubes, silicon, , and polysulfone substrates. Akin to this approach is the introduction of a NHS-ester of the CTA to an aminated or hydroxylated silica ,,,, or Fe 2 O 3 surface.…”

Preparation of surface-modified ZnO quantum dots through an ultrasound assisted sol–gel process

“…In fact, the electrical and optical properties can be tuned through proper control over the size, morphology and surface defects of the synthesized semiconducting QDs by selection of the appropriate capping agent [10][11][12]. Furthermore, such modified nanoparticles could also be effectively used in biosystems [8], organicinorganic hybrid materials [7,13],etc.…”