Synthesis and characterization of novel star polymer with β‐cyclodextrin core and its metal complexes

Abstract

A novel star polymer with b-cyclodextrin (b-CD) core and polyacrylonitrile arms and its metal complexes (Cu 2þ , Zn 2þ , and Ag þ ) were synthesized and characterized by means of infrared spectra, ultraviolet, GPC, X-ray photoelectron spectroscopy, differential scanning calorimetry, cyclic voltammetry, and electron spin resonance. The results indicate that the monomers of acrylonitrile were initiated by functionalized b-CD. The thermal properties of star polymer were improved greatly after transitional metal ions were introduced into it. The novel star polymer metal complexes possess properties of metal ions, polymer, and b-CD. Furthermore, it shows stable electrochemical activity.

Synthesis of Monodispersed Co(Fe)/Carbon Nanocomposite Microspheres with Very High Saturation Magnetization

“…The key feature of the entrapping process is to make cobalt entrapped inside the carbon microspheres and protect the cobalt nanocrystals from oxidization when exposed to air. Just as we know, the triple bonds of the cyano group in PAN microspheres are the versatile ligands and commonly used in organometallic chemistry, , the PAN microspheres were readily metallicized through coordination with the cobalt (II) ion. To entrap the cobalt ions as much as possible, PAN microspheres were first swollen to make inside triple bonds active.…”

Non‐covalent interactions of pyrene end‐labeled star poly(ɛ‐caprolactone)s with fullerene

“…These structures have a core among the branched polymers and every molecule has only one branching point . As an advantage of choosing appropriate arm and core, the tailor‐made star polymers are utilized in many applications such as membranes, rheology controlling, dispersing agents, drug‐delivery systems, and thermoplastic elastomers . Star polymers can be prepared by two approaches including arm‐first (convergent) and core‐first (divergent).…”

Miktoarm star polymers with poly(N-isopropylacrylamide) or poly(oligo(ethylene glycol) methacrylate) as building blocks: synthesis and comparison of thermally-responsive behaviors

“…61 The cyclic structure and its richness in activated hydroxyl groups make b-CD an ideal core material for the synthesis of star polymers. [62][63][64][65][66] Furthermore, according to the literature [37][38][39] and our previous work, [67][68][69][70][71][72] b-CD can also be modified into an excellent core component, even for miktoarm star polymers, via selective reactions at its hydroxyl groups.…”