Novel Sulfonic-Acid-Group-Containing Segmented Block Copolymer, Application Thereof, and Method of Manufacturing Novel Block Copolymer
申请人:Kitamura Kouta
公开号:US20110065021A1
公开(公告)日:2011-03-17
[Object] To provide a proton exchange membrane for a fuel cell having excellent proton conductivity, lower property of swelling with hot water, and excellent durability, as well as a block copolymer forming the proton exchange membrane, and a composition, a molded product, a fuel cell proton exchange membrane electrode assembly, and a fuel cell.
[Solving Means] (1) A block copolymer having a hydrophilic segment and a hydrophobic segment and having a structure expressed by Chemical Formula 1 below
(where X represents H or a univalent cation, Y represents sulfonyl group or carbonyl group, each of Z and z′ independently represents any of O and S atoms, W represents one or more group selected from the group consisting of direct bond between benzenes, sulfone group and carbonyl group, each of Ar
1
and Ar
2
independently represents divalent aromatic group, and each of n and m independently represents an integer from 2 to 100), and a molded product, a composition, and a proton exchange membrane, as well as a fuel cell including the proton exchange membrane.
US8187734B2
申请人:——
公开号:US8187734B2
公开(公告)日:2012-05-29
A Convergent Synthesis of Polysubstituted Aromatic Nitriles via Palladium-Catalyzed C−H Functionalization
A palladium-catalyzed C-H functionalization reaction for the synthesis of highly substituted aromatic nitriles is reported. The modularity of the reaction is demonstrated by the broad range of aryl iodides which can be coupled with metalcyanides and alkylhalides or aryl bromides.