• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Chemistry: A European journal >The binding of single-stranded DNA and PNA to single-walled carbon nanotubes probed by flow linear dichroism
【24h】

The binding of single-stranded DNA and PNA to single-walled carbon nanotubes probed by flow linear dichroism

机译：单链DNA和PNA与通过流动线性二色性探测的单壁碳纳米管的结合

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

The binding of single-stranded DNAs and a neutral DNA analogue (peptide nucleic acid, PNA) to single-walled carbon nanotubes in solution phase has been probed by absorbance spectroscopy and linear dichroism. The nanotubes are solubilised by aqueous sodium dodecyl sulfate, in which the nucleic acids also dissolve. The linear dichroism (LD) of the nanotubes, when subtracted from that due to the nanotubesucleic acid samples, gives the LD of the bound nucleic acid. The binding of the single-stranded DNA to the single-walled nanotubes is quite different from that previously observed for double-stranded DNA. It is likely that the nucleic acid bases lie flat on the nanotube surface with the backbone wrapping round the nanotube at an oblique angle in the region of 45 degrees. The net effect is like beads on a string. The base orientation with the single-stranded PNA is inverted with respect to that of the single-stranded DNA, as shown by their oppositely signed LD signals.
机译：单链DNA和中性DNA类似物（肽核酸，PNA）与单相碳纳米管在溶液相中的结合已通过吸收光谱和线性二色性进行了探测。纳米管被十二烷基硫酸钠水溶液溶解，核酸也溶解在其中。当从由于纳米管/核酸样品引起的线性二色性（LD）中减去该线性二色性（LD）时，给出结合的核酸的LD。单链DNA与单壁纳米管的结合与之前双链DNA的结合有很大不同。核酸碱基可能平坦地排列在纳米管表面上，并且主链以45度左右的倾斜角包裹在纳米管周围。最终效果就像串珠。单链PNA的碱基方向相对于单链DNA的碱基方向是相反的，如其相反的LD信号所示。

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