Akimoto M.,Course of Science and Technology |
Takahashi Y.,Course of Industrial Chemistry |
Yamasmta K.,Course of Industrial Chemistry |
Kawamoto M.,RIKEN |
Nagase Y.,Course of Science and Technology
Kobunshi Ronbunshu | Year: 2012
The syntheses of polymers containing an indolo[3, 2-6]carbazole (INC) moiety in the main chain were accomplished by the reaction of iV-position of INC with diiodoalkanes or tosyl-terminated oligo(ethylene oxidejs. As a result, two kinds of INC-containing polymers were prepared in which the INC moiety was linked via alkylene or oligo(ethylene oxide) chains. In the case of INC-containing polymers linked with alkylene chain, the solubility increased by the copolymerization with different diiodoalkanes. A glassy thin film could be fabricated from the obtained copolymer by spin-coating. A photoluminescence peak was observed for the copolymer solution at 410-430 nm, which stemmed from the INC moiety. INC-containing polymers linked with oligo(ethylene oxide) chain showed a better solubility than the polymers linked with alkylene chains. From the obtained oligo(ethylene oxide) chain polymers, a self-standing polymer film could be fabricated by the solvent-casting method. For the thermal properties of these polymers, it was found that T.'s of polymers increased with the increase of INC content in the repeating unit. ©2012, The Society of Polymer Science, Japan.
Narita Y.,Course of Industrial Chemistry |
Sirithep W.,Course of Industrial Chemistry |
Okamura Y.,Tokai University |
Nagase Y.,Course of Industrial Chemistry
Kobunshi Ronbunshu | Year: 2013
The preparation of soluble polyamides, poly(amide-ester) and poly(urethane-urea) containing phosphorylcholine (PC) group was carried out by the polycondensation and polyaddition using an aromatic diamine monomer containing a phospholipid polar group. In the syntheses of poly(amideester) and poly(urethane-urea), polycarbonatediol was used as a comonomer to insert a soft segment. The self-standing elastic polymer films could be fabricated from the obtained PC-containing copolymers by the solvent-casting method. In particular, polymer films fabricated from poly(urethane-urea) exhibited the elastic properties similar to commercially available poly(carbonate-urethane), bionate®. It was found that the PC-containing polymer films sufficiently reduced the adhesion of proteins and platelets. Therefore, it was shown that the obtained polymers possess both, high biocompatibility derived from PC group and the elastic properties derived from the main chain structure. ©2013, The Society of Polymer Science,Japan.