Bioactive multiple-bent MWCNTs for sensitive and reliable electrochemical detection of picomolar-level C-reactive proteins
| Autor: | Jinmu Jung, Hyojae Kim, Yeongseok Jang, Jonghyun Oh, Seung Yun Yang |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Blood Platelets
Detection limit Nanotubes Carbon Chemistry Substrate (chemistry) Electrochemical Techniques Chemical vapor deposition Carbon nanotube Platelet Activation Catalysis law.invention C-Reactive Protein Carbon film Chemical engineering Limit of Detection law Humans General Materials Science Collagen Hydrophobic and Hydrophilic Interactions Biosensor Layer (electronics) |
| Zdroj: | Nanoscale. 12:9980-9990 |
| ISSN: | 2040-3372 2040-3364 |
| DOI: | 10.1039/c9nr10798c |
| Popis: | We present multiple-bent multi-walled carbon nanotubes (MWCNTs) that enable the picomolar detection of C-reactive protein (CRP), which is considered to be a promising biomarker for various diseases. The MWCNTs were grown via chemical vapor deposition repeating the asymmetric catalytic CNT growth on atypical carbon nanoparticles that were generated by carbon coating on a silicon substrate. The multiple-bent MWCNTs with the carbon film (CF) possessed abundant hydrophilic functional groups (-COOH and -OH) at their bending sites, resulting in enhanced bioadhesion to collagen and platelets, compared to MWCNTs grown without a CF layer. Interestingly, the bent MWCNTs enhanced the reliability and sensitivity of the electrochemical detection at low CRP concentrations, possibly due to molecular affinity at the bent site. The bioactive bent MWCNTs can play a significant role in ultrasensitive biosensors to improve their detection limit, thereby achieving early detection and monitoring of CRP-related diseases such as cardiovascular events and melanoma. |
| Databáze: | OpenAIRE |
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