Some known and new hexaaryloxyphosphazene: N3P3(O-C6H4-R)(1)/(R=H.CH.OCH3. C(CH3)(3). CHO.F.C6H5COOR. etc) were readily obtained with ca. 70% isolated yield in refluxing acetonitriie in the presence of anhydrous potas...Some known and new hexaaryloxyphosphazene: N3P3(O-C6H4-R)(1)/(R=H.CH.OCH3. C(CH3)(3). CHO.F.C6H5COOR. etc) were readily obtained with ca. 70% isolated yield in refluxing acetonitriie in the presence of anhydrous potassium phosphate. All compounds were characterized by means of elemental analysis. H-1-NMR.P-31-NMR sprctroscopy.展开更多
End grafted polyacrylonitrile (PAN) brush was prepared through surface initiated polymerization via the chain transfer process. The thiol-terminated monolayer and PAN brushes were characterized by FTIR, X-ray photoel...End grafted polyacrylonitrile (PAN) brush was prepared through surface initiated polymerization via the chain transfer process. The thiol-terminated monolayer and PAN brushes were characterized by FTIR, X-ray photoelectron spectroscopy (XPS), atomic force microscopy (AFM), ellipsometry and contact angle measurements etc. It is demonstrated that radical chain transfer reaction and surface initiated precipitate polymerization can be used to prepare end-grafted polymer brushes.展开更多
基金We are grateful to the National Natural Science Foundation of China (grant NO. 59825116) and Chinese Academy of Sciences for the
文摘Some known and new hexaaryloxyphosphazene: N3P3(O-C6H4-R)(1)/(R=H.CH.OCH3. C(CH3)(3). CHO.F.C6H5COOR. etc) were readily obtained with ca. 70% isolated yield in refluxing acetonitriie in the presence of anhydrous potassium phosphate. All compounds were characterized by means of elemental analysis. H-1-NMR.P-31-NMR sprctroscopy.
基金supported by the National Natural Science Foundation of China(Grants No.59825116)"Hundred Talents Program"of Chinese Academy of Sciences.
文摘End grafted polyacrylonitrile (PAN) brush was prepared through surface initiated polymerization via the chain transfer process. The thiol-terminated monolayer and PAN brushes were characterized by FTIR, X-ray photoelectron spectroscopy (XPS), atomic force microscopy (AFM), ellipsometry and contact angle measurements etc. It is demonstrated that radical chain transfer reaction and surface initiated precipitate polymerization can be used to prepare end-grafted polymer brushes.
