title: Visual detection of mercury(II) based on recognition of the G-quadruplex conformational transition by a cyanine dye supramolecule.
abstract: A supramolecular probe for visual detection of mercury (Hg) has been designed by using a cyanine dye and AS1411 G-quadruplexes, which exhibits an obvious color change from red to blue in response to an increased level of Hg(2+). The supramolecular probe exhibits high selectivity and sensitivity towards Hg(2+) and is promising for the detection of environmental samples with the naked eye.
authors.affiliation: College of Chemistry Engineering, North China University of Science and Technology, Tangshan, 063009, PR China. zhangxf@heuu.edu.cn.
authors.forename: Hongbo
authors.initials: H
authors.lastname: Chen
authors.forename: Xiufeng
authors.initials: X
authors.lastname: Zhang
authors.forename: Hongxia
authors.initials: H
authors.lastname: Sun
authors.forename: Xiaoran
authors.initials: X
authors.lastname: Sun
authors.forename: Yunhua
authors.initials: Y
authors.lastname: Shi
authors.forename: Shujuan
authors.initials: S
authors.lastname: Xu
authors.forename: Yalin
authors.initials: Y
authors.lastname: Tang
mesh_terms: D015374:Biosensing Techniques / Q000295:instrumentation*; D002232:Carbocyanines / Q000737:chemistry*; D002942:Circular Dichroism; D003124:Colorimetry / Q000295:instrumentation* / Q000379:methods; D004396:Coloring Agents / Q000737:chemistry*; D004784:Environmental Monitoring / Q000379:methods; D005618:Fresh Water; D054856:G-Quadruplexes; D046911:Macromolecular Substances; D008628:Mercury / Q000032:analysis*; D011188:Potassium / Q000737:chemistry; D015203:Reproducibility of Results; D014874:Water Pollutants, Chemical / Q000032:analysis
chemical_list: D002232:Carbocyanines; D004396:Coloring Agents; D046911:Macromolecular Substances; D014874:Water Pollutants, Chemical; C000657:cyanine dye 1; D008628:Mercury; D011188:Potassium