期刊
RSC ADVANCES
卷 7, 期 22, 页码 13177-13183出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7ra00170c
关键词
-
资金
- National Natural Science Foundation of China [51403077]
- National Science Fund for Distinguished Young Scholars of China [61225023]
- Research Fund for the Doctoral Program of Higher Education [20114401110006]
- Guangdong Natural Science Foundation [S2013030013302, 2014A030313387]
- Youth Science and Technology Innovation Talents of Guangdong [2014TQ01X539]
- Fundamental Research Funds for the Central Universities [21615446]
Ultrasensitive and in situ DNA detection at different pH values, ranging from 4.3 to 8.5, based on a microfiber with a graphene oxide linking layer was proposed and experimentally demonstrated. The graphene oxide coating over the silica microfiber provides a strong pi-pi interaction with the detected single-stranded DNA molecules, and induces an amplified surface refractive index modulation over the fiber, and finally leads to a wavelength shift of the optical interference fringe for interrogation. Using this strategy, in situ DNA measurement with a detection limit of up to 10 (-12) M and a linear response in the pH range from 4.3-8.5 has been achieved. Benefiting from its compact size, high sensitivity, and ease of use, together with remote operational ability, the proposed sensor opens up a multitude of opportunities for quantifying DNA in various hard-to-reach environments. It may supplement the existing DNA detection tools.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据