title: A novel single-labeled fluorescent oligonucleotide probe for silver(I) ion detection based on the inherent quenching ability of deoxyguanosines.
abstract: A novel single-labeled fluorescent oligonucleotide (OND) probe for the detection of nanomolar silver(I) ion in aqueous solution is developed based on the inherent quenching ability of deoxyguanosines. The formation of a hairpin structure of the OND-Ag(+) complex brings deoxyguanosines close to a dye, leading to a decreased fluorescence intensity of the dye owning to photoinduced electron transfer from the dye to deoxyguanosines.
authors.affiliation: State Key Lab of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, Jilin, China.
authors.forename: Lei
authors.initials: L
authors.lastname: Wang
authors.forename: Jingqi
authors.initials: J
authors.lastname: Tian
authors.forename: Hailong
authors.initials: H
authors.lastname: Li
authors.forename: Yingwei
authors.initials: Y
authors.lastname: Zhang
authors.forename: Xuping
authors.initials: X
authors.lastname: Sun
mesh_terms: D015374:Biosensing Techniques / Q000295:instrumentation / Q000379:methods*; D002412:Cations; D003849:Deoxyguanosine / Q000737:chemistry*; D005456:Fluorescent Dyes / Q000737:chemistry*; D015345:Oligonucleotide Probes / Q000737:chemistry*; D012834:Silver / Q000032:analysis* / Q000737:chemistry; D012996:Solutions / Q000737:chemistry; D013050:Spectrometry, Fluorescence
chemical_list: D002412:Cations; D005456:Fluorescent Dyes; D015345:Oligonucleotide Probes; D012996:Solutions; D012834:Silver; D003849:Deoxyguanosine