Ferrocene-conjugated oligonucleotides that can form intermolecular guanine (G)-quadruplexes are prepared and used as signaling probes for detecting target DNA, improving substantially assay characteristics (e.g. a considerably wider linear dynamic range and lower detection limit).
State Key Laboratory for Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, PR China.
