Multiple hydrogen bonding for the noncovalent attachment of ionic functionality in triblock copolymers

被引：38
作者：
Mather, Brian D.
Baker, Margaux B.
Beyer, Frederick L.
Green, Matthew D.
Berg, Michael A. G.
Long, Timothy E. [1 ]
机构：
[1] Virginia Tech, Dept Chem, Macromol & Interfaces Inst, Blacksburg, VA 24061 USA
[2] USA, Res Lab, Div Mat, Aberdeen Proving Ground, MD 21005 USA
来源：
MACROMOLECULES | 2007年 / 40卷 / 13期
关键词：
D O I：
10.1021/ma070102a
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
A study was conducted to define a new strategy for the introduction of thermally stable ionic sites to block copolymers through hydrogen bonding. Hydrogen bonding exhibited lower enthalpies and greater specificity, which enabled molecular recognition and lower melt viscosities, using hydrogen-bonding arrays, such as ureido pyrimidones (UPy) and nucleobase pairs. Novel hydrogen-bonding triblock copolymers containing adenine, were synthesized through nitroxide-mediated polymerization. A novel difunctional initiator, which does not introduce hydrolytically unstable ester links that lead to molecular weight loss, permitted the formation of symmetric outer blocks, reduced the number of monomer additions, and enabled a single crossover reaction.
引用
收藏
页码：4396 / 4398
页数：3
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