首页> 外文期刊>Chemistry: A European journal >N.N'-Disubstituted Ureas:Influence of Substituents on the Formation of Supramolecular Polymers
【24h】

N.N'-Disubstituted Ureas:Influence of Substituents on the Formation of Supramolecular Polymers

机译:N.N'-双取代尿素:取代基对超分子聚合物形成的影响

获取原文
获取原文并翻译 | 示例
           

摘要

Symmetrical N,N'-disubstituted ureas have been synthesized adn characterized Among them the branched dialkylureas prepared are highly soluble in organic media Moreover dthe solutions obtined are very viscous in heptane if the branched alkyl roups are not too bulky (i.e.a methyl group on the a carbon or an ethyl group on the beta carbon) Due to the strong bifurcated hydrogen bonds between the urea moieties dhinear supromolecular polymers are formed The degree of association of these supramolecular polymers has been determined by FTIR spectroscopy.
机译:合成了对称的N,N'-二取代脲,并表征了其中制备的支链二烷基脲在有机介质中的溶解度高。另外,如果支链烷基团不太庞大,则所获得的溶液在庚烷中的粘度非常高(即a上的甲基)。碳原子或β碳原子上的乙基)由于在脲部分之间形成了强的分叉氢键,从而形成了超分子聚合物。这些超分子聚合物的缔合度已通过FTIR光谱法测定。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号