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Novel 8-hydroxyquinoline-terminated hyperbranched polyesters (1-HBPQ and 2-HBPQ) were synthesized and characterized by 1H-NMR and UV-Vis analyses. Then, two erbium complexes (1-HBPQ-Er3+-HQ and 2-HBPQ-Er3+-HQ) were prepared by using 1-HBPQ or 2-HBPQ as the macromolecular ligand and 8-hydroxyquinoline (HQ) as a second ligand. The FTIR spectra and UV-Vis absorption spectra confirmed that both the macromolecular...
This paper reports a systematic study on a series of supramolecular polyurethanes that possess microphase separated morphologies which afford elastic materials at room temperature. Combinations of urea and/or urethane linkers in addition to a phenyl spacer have been used to study the effect of the rigidity of the hard end group segments as well as the hydrogen bonding capability of the urethane-urea...
Poly(N-isopropylacrylamide) (PNIPAm)-hectorite clay nanocomposite cryogels (NC-C gels) were prepared by freezing polymerization at −18 °C of NIPAm monomer in the aqueous hectorite clay suspensions. The clay concentration C xLS was found to be a key factor determining the characters of the NC-C gels, because the average interparticle distance became smaller than the clay diameter when C ...
A series of novel polyaryletherketones bearing pendant carboxyl groups were synthesized via solution nucleophilic polycondensation reaction, and the rare earth (Re 3+ =Sm 3+ , Eu 3+ , Dy 3+ and Tb 3+ ) coordinated polymers were prepared using the polymer as macromolecular ligand and 1,10-phenanthroline (Phen), dibenzoylmethane (DBM) or 8-hydroxyquinoline (HQ)...
tert-Butylphenyl terminated disulfonated poly(arylene ether sulfone) copolymers with controlled molecular weights (M n ), 20–50kgmol −1 , were successfully prepared by direct copolymerization of the two activated halides, biphenol and the endcapper, 4-tert-butylphenol. The high molecular weight copolymer (molecular weight over 80kgmol −1 ) was also synthesized with 1:1 stoichiometry...
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