• 文献标题:   DNA adsorbed on graphene and graphene oxide: Fundamental interactions, desorption and applications
  • 文献类型:   Review
  • 作  者:   LIU BW, SALGADO S, MAHESHWARI V, LIU JW
  • 作者关键词:   graphene, dna, adsorption, biosensor, fluorescence
  • 出版物名称:   CURRENT OPINION IN COLLOID INTERFACE SCIENCE
  • ISSN:   1359-0294 EI 1879-0399
  • 通讯作者地址:   Univ Waterloo
  • 被引频次:   68
  • DOI:   10.1016/j.cocis.2016.09.001
  • 出版年:   2016

▎ 摘  要

Interfacing DNA oligonucleotides with graphene-based materials, especially graphene oxide, has produced many new sensors and devices. Since graphene oxide is an excellent fluorescence quencher, fluorescently labeled DNAs (probes) are nearly fully quenched upon adsorption. Addition of the complementary DNA results in probe desorption and fluorescence enhancement. Aside from its analytical applications, this system provides a fascinating topic for biointerface science. DNA can be adsorbed by graphene oxide via it-it stacking and hydrogen bonding, while it must overcome electrostatic repulsion at the same time. The mechanism of DNA-induced probe desorption has also been a topic of extensive discussion. In this article, DNA adsorption and desorption reactions and interactions with graphene oxide and related materials (e.g. graphene) are reviewed based on the current understandings. A few representative applications based on these processes are also described briefly. (C) 2016 Elsevier Ltd. All rights reserved.