引用本文:
Xu Zhi Zhang, Kui Jiao. Aligned single-walled carbon nanotubes array electrode: Fabrication, characterization and application[J]. Chinese Chemical Letters,
2009, 20(1): 76-78.
doi:
10.1016/j.cclet.2008.09.007
Citation: Xu Zhi Zhang, Kui Jiao. Aligned single-walled carbon nanotubes array electrode: Fabrication, characterization and application[J]. Chinese Chemical Letters, 2009, 20(1): 76-78. doi: 10.1016/j.cclet.2008.09.007
Citation: Xu Zhi Zhang, Kui Jiao. Aligned single-walled carbon nanotubes array electrode: Fabrication, characterization and application[J]. Chinese Chemical Letters, 2009, 20(1): 76-78. doi: 10.1016/j.cclet.2008.09.007
Aligned single-walled carbon nanotubes array electrode: Fabrication, characterization and application
摘要:
In the presence of 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (EDC) and N-hydroxysuccinimide (NHS),carboxylic group-functionalized single-walled carbon nanotubes (SWNTs) were assembled vertically on the glassy carbon electrode using ethylenediamine as linking agent to fabricate an aligned electrode (SWNTE). The morphological characteristic was studied with atomic force microscope (AFM) and its electrochemical property was investigated using K3[Fe(CN)6] as probe.ssDNA had a sensitive voltammetric response at the SWNTE and the oxidative peak potentials of guanine base and adenine base were 0.608 Vand 0.896 V, respectively. Under the optimal conditions, the DPV peak current of guanine base vs. the concentration of ssDNA was linear in the range of 5.4 μg/L-10.8 μg/L with a detection limit of 1 μg/L (S/N=3).
English
Aligned single-walled carbon nanotubes array electrode: Fabrication, characterization and application
Abstract:
In the presence of 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (EDC) and N-hydroxysuccinimide (NHS),carboxylic group-functionalized single-walled carbon nanotubes (SWNTs) were assembled vertically on the glassy carbon electrode using ethylenediamine as linking agent to fabricate an aligned electrode (SWNTE). The morphological characteristic was studied with atomic force microscope (AFM) and its electrochemical property was investigated using K3[Fe(CN)6] as probe.ssDNA had a sensitive voltammetric response at the SWNTE and the oxidative peak potentials of guanine base and adenine base were 0.608 Vand 0.896 V, respectively. Under the optimal conditions, the DPV peak current of guanine base vs. the concentration of ssDNA was linear in the range of 5.4 μg/L-10.8 μg/L with a detection limit of 1 μg/L (S/N=3).
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Key words:
- Single-walled carbon nanotubes
- / Aligned electrode
- / DNA
- / Voltammetry
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