...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Polymers for advanced technologies >Ion conductive characteristics of DNA containing PEO chains covalently bound on nucleic acid bases
【24h】

Ion conductive characteristics of DNA containing PEO chains covalently bound on nucleic acid bases

机译：包含共价结合在核酸碱基上的PEO链的DNA的离子导电特性

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In order to prepare flexible and ion conductive deoxyribonucleic acid (DNA) films without phase separation, DNA was modified with poly(ethylene oxide) (PEO). PEOs with molecular weight of 150 to 2000 were fixed to the amino groups of nucleic acid bases in DNA (PEO-DNA). Brittle DNA films turned flexible after PEO modification, and the highest ionic conductivity was obtained when PEO with molecular weight of 1000 was modified. Though Na{sup}+, counter cation of phosphate group, was expected to migrate in these PEO{sub}X-DNA hybrids as a carrier ion, ionic conductivity was only 1.3 × 10{sup}(-6) S cm{sup}(-1). Addition of salts to PEO{sub}1000-DNA considerably improved the ionic conductivity, and sodium bis(trifluoromethanesulfonyl)imide (NaTFSI) was the best salt for this purpose. When NaTFSI, 5 mol% to the oxyethylene (OE) unit, was mixed with PEO{sub}1000-DNA, the highest ionic conductivity of 1.77 × 10{sup}(-5) S cm{sup}(-1) was observed at 30℃.
机译：为了制备没有相分离的柔性和离子导电的脱氧核糖核酸（DNA）膜，用聚环氧乙烷（PEO）修饰DNA。分子量为150至2000的PEO固定在DNA（PEO-DNA）的核酸碱基的氨基上。 PEO改性后，脆性DNA膜变得柔软，当分子量为1000的PEO改性时，离子导电率最高。尽管预期Na {sup} +（磷酸基团的抗衡阳离子）会在这些PEO {sub} X-DNA杂化物中作为载流子迁移，但离子电导率仅为1.3×10 {sup}（-6）S cm {sup }（-1）。将盐添加到PEO {sub} 1000-DNA中可大大改善离子电导率，为此目的，双（三氟甲磺酰基）酰亚胺钠（NaTFSI）是最好的盐。将占氧化乙烯（OE）单元5摩尔％的NaTFSI与PEO {sub} 1000-DNA混合时，最高离子电导率为1.77×10 {sup}（-5）S cm {sup}（-1）在30℃观察。

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