The DOI matches its Crossref record; 1 of the 1 references it cites were found in a registry or an index.
Direct Voltammetric Detection of DNA and pH Sensing on Epitaxial Graphene: An Insight into the Role of Oxygenated Defects
Abstract
In this paper, we carried out detailed electrochemical studies of epitaxial graphene (EG) using inner-sphere and outer-sphere redox mediators. The EG sample was anodized systematically to investigate the effect of edge plane defects on the heterogeneous charge transfer kinetics and capacitive noise. We found that anodized EG, consisting of oxygen-related defects, is a superior biosensing platform for the detection of nucleic acids, uric acids (UA), dopamine (DA), and ascorbic acids (AA). Mixtures of nucleic acids (A, T, C, G) or biomolecules (AA, UA, DA) can be resolved as individual peaks using differential pulse voltammetry. In fact, an anodized EG voltammetric sensor can realize the simultaneous detection of all four DNA bases in double stranded DNA (dsDNA) without a prehydrolysis step, and it can also differentiate single stranded DNA from dsDNA. Our results show that graphene with high edge plane defects, as opposed to pristine graphene, is the choice platform in high resolution electrochemical sensing.
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Cites
Graphene: Status and Prospects
Geim, A. K. (2009) · Science · doi:10.1126/science.1158877 · Cited by 13,942
Cited by
Electrochemistry of Graphene and Related Materials
Ambrosi, A., Chua, C. K., Bonanni, A., & Pumera, M. (2014) · Chemical Reviews · doi:10.1021/cr500023c · Cited by 1,208
Electrically-Transduced Chemical Sensors Based on Two-Dimensional Nanomaterials
Meng, Z., Stolz, R. M., Mendecki, L., & Mirica, K. A. (2019) · Chemical Reviews · doi:10.1021/acs.chemrev.8b00311 · Cited by 773
Electrochemistry of Nucleic Acids
Paleček, E., & Bartošík, M. (2012) · Chemical Reviews · doi:10.1021/cr200303p · Cited by 668
Graphene-Based Electrochemical Sensors
Wu, S., He, Q., Tan, C., Wang, Y., & Zhang, H. (2013) · Small · doi:10.1002/smll.201202896 · Cited by 628
Metadata
- Authors
- Lim, C. X., Hoh, H. Y., Ang, P. K., & Loh, K. P.
- Venue
- Analytical Chemistry
- Publisher
- American Chemical Society (ACS)
- Published
- 2010-08-16
- Volume
- 82
- Issue
- 17
- Pages
- 7387-7393
- ISSN
- 0003-2700 (ISSN-L)
- 1520-6882
- OpenAlex
- W2006426913
- Cited by
- 236
- References
- 1
- FWCI
- 18.69
- Type
- journal article
- Language
- en
- Open access
- closed
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- CoChat. (2026). Citation check: Direct Voltammetric Detection of DNA and pH Sensing on Epitaxial Graphene: An Insight into the Role of Oxygenated Defects. https://app.cochat.ai/papers/10.1021/ac101519v
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- Lim, C. X., Hoh, H. Y., Ang, P. K., & Loh, K. P. (2010). Direct Voltammetric Detection of DNA and pH Sensing on Epitaxial Graphene: An Insight into the Role of Oxygenated Defects. Analytical Chemistry. https://doi.org/10.1021/ac101519v
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