Functional Cyclomatrix Polyphosphazenes Nano/Micro Materials, Synthesis And Further Applications

An amphiphilic cyclomatrix-type polyphosphazene material with the phase transferproperty was produced by the polycondensation between HCCP and2,4,6-triaminopyrinide, hollow carbonaceous spheres and nanosheets can be achieved aftercarbonization with polyphosphazene spheres and oligomers respectively. Monodispersedmicrospheres and hollow spheres with intrinsic fluorescence were prepared by thepolycondensation between HCCP and bioactive comonomer resveratrol.(1) An amphiphilic cyclomatrix-type polyphosphazene material was synthesisedby the polycondensation between HCCP and water-soluble2,4,6-triaminopyrinide innitrogen atmosphere through ultrasonic condition, with triethylamine (TEA) as acid-acceptor, acetonitrile as solvent, dimethyl formamide respectively. What is more, theamphiphilic cross-linked polyphosphazene microspheres can transfer from oil phase tothe oil/water interface rapidly when some water was added. This phase transfer propertycontribute to the application on adsorption and separation from oil phase and interphasecatalysis. The adsorption of anionic dye and lead ions were tested and polyphosphazenemicrospheres shows excellent adsorption efficiency of amionic dye congo red and leadions.(2) Monodispersed polyphosphazene microspheres with hydroxy and double bondfunctional groups were prepared by the polycondensation between HCCP and bioactivecomonomer resveratrol with triethylamine (TEA) as acid acceptor and acetonitrile assolvent. The optimality condition by checking how reaction solvent was analyzed, andmonodispersed polyphosphazene microspheres were synthesized under the condition.Hollow spheres with mesoporous shells were synthesized using hard template and used as drug delivery system and showed larger loading capacity (59.7mg/g) and excellentsustained release.