Rational attachment of synthetic triptycene orthoquinone onto carbon nanotubes for electrocatalysis and sensitive detection of thiols
文献类型：期刊论文
| 作者 | Gong, KP; Zhu, XZ; Zhao, R; Xiong, SX; Mao, LQ; Chen, CF |
| 刊名 | ANALYTICAL CHEMISTRY
 |
| 出版日期 | 2005-12-15 |
| 卷号 | 77期号:24页码:8158-8165 |
| ISSN号 | 0003-2700 |
| DOI | 10.1021/ac0512397 |
| 英文摘要 | This study demonstrates a novel electrochemical method for sensitive determination of biological thiols including homocysteine, cysteine, and glutathione based on rational functionalization of single-walled carbon nanotubes (SWNTs) with synthetic triptycene orthoquinone (TOQ). Unlike previous strategies used for the functionalization of the carbon nanotubes to fabricate new kind of electrochemically functional nanostructures, the method demonstrated here is essentially based on understanding of the redox properties inherent in the SWNTs themselves. It is demonstrated that the electrochemical oxidation of the thiols at the SWNT-modified electrode is redoxmediated by the quinone-like functional groups at the tube ends and that the low density of such functional groups leads to a follow-up oxidation of the thiols at a more positive potential at the electrode. To mimic the redox properties of the SWNTs and thus to increase the catalytic sites onto the SWNTs, we rationally choose the synthetic TOQ and attach such a compound onto the SWNTs. As a result, it is found that the rational attachment of TOQ onto the SWNTs substantially results in a sufficient electrocatalysis toward the thiols at a low potential of 0.0 V with enhanced sensitivities (i.e., almost by a factor of 10-fold) for the determination of such kind of species in relative to those at the SWNT-modified electrode. The high sensitivity and the good stability as well as the high reproducibility of the TOQ/SWNT-modified electrodes substantially make them very useful for reliable and durable determination of the biological thiols. |
| 语种 | 英语 |
| WOS记录号 | WOS:000234079200042 |
| 出版者 | AMER CHEMICAL SOC |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/57635]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Mao, LQ |
| 作者单位 | 1.Chinese Acad Sci, Inst Chem, Ctr Mol Sci, Beijing 100080, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100080, Peoples R China |
| 推荐引用方式 GB/T 7714 | Gong, KP,Zhu, XZ,Zhao, R,et al. Rational attachment of synthetic triptycene orthoquinone onto carbon nanotubes for electrocatalysis and sensitive detection of thiols[J]. ANALYTICAL CHEMISTRY,2005,77(24):8158-8165. |
| APA | Gong, KP,Zhu, XZ,Zhao, R,Xiong, SX,Mao, LQ,&Chen, CF.(2005).Rational attachment of synthetic triptycene orthoquinone onto carbon nanotubes for electrocatalysis and sensitive detection of thiols.ANALYTICAL CHEMISTRY,77(24),8158-8165. |
| MLA | Gong, KP,et al."Rational attachment of synthetic triptycene orthoquinone onto carbon nanotubes for electrocatalysis and sensitive detection of thiols".ANALYTICAL CHEMISTRY 77.24(2005):8158-8165. |
入库方式： OAI收割
来源：化学研究所
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