Dr. Jing Wu Profile

Dr. Jing Wu

at Wuhan Univ of Technology

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Proceedings Article | 24 August 2009 Paper

Synthesis, structure, and electrochemical properties of nano-layered organic-inorganic perovskites containing Fe(CN)63- layers and its application for detection of DNA hybridization

Jing Wu, Hanxing Liu

Proceedings Volume 7381, 73810N (2009) https://doi.org/10.1117/12.830562

KEYWORDS: Amplifiers, Electrodes, Scanning electron microscopy, Magnesium, Metals, Crystals, X-ray diffraction, Particles, Perovskite, Oxidation

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Steady organic-inorganic perovskite hybrids with [H₂2-AMP]_3/2Fe(CN)₆, [H₂3-AMP]_3/2Fe(CN)₆ and [H₂4- AMP]_3/2Fe(CN)₆ (AMP = aminomethylpyridine) were formed in the air. Each structure shows an unusual layered organic-inorganic structural type. The hybrids enveloped in paraffin, respectively, to prepare hybrid paste electrode (HPE) (HPE-2 with [H₂2-AMP]_3/2Fe(CN)₆, HPE-3 with [H₂3-AMP]_3/2Fe(CN)₆, HPE-4 with [H₂4-AMP]_3/2Fe(CN)₆). Three hybrids in HPEs showed good electrochemical characteristics. The sequence of redox activity is [H₂4- AMP]_3/2Fe(CN)₆ > [H₂2-AMP]_3/2Fe(CN)₆ > [H₂3-AMP]_3/2Fe(CN)₆ and that of electrocatalytical characteristics is [H₂3- AMP]_3/2Fe(CN)₆ > [H₂2-AMP]_3/2Fe(CN)₆ > [H₂4-AMP]_3/2 Fe(CN)₆. Three hybrids have been employed to investigate the interaction between DNA and three hybrids. The results indicate that between [H₂3-AMP]_3/2Fe(CN)₆ and DNA is useful and [H₂3-AMP]_3/2Fe(CN)₆ can detect the hybridization of DNA. And the interaction between [H₂2-AMP]_3/2Fe(CN)₆ and DNA and between [H₂4-AMP]_3/2Fe(CN)₆ and DNA is slender. Three HPEs display remarkable electrochemical sensitivity and stability. The variation coefficients (RSD) of repeatedly successive and interval assays are less than 2.5%. The chemical and physical stability of three hybrids is satisfactory.

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