2020
DOI: 10.1039/c9na00625g
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Universal DNA detection realized by peptide based carbon nanotube biosensors

Abstract: Although DNA recognition has been achieved using numerous biosensors with various sensing probes, the utilization of bio-interaction between DNA and biomolecules has seldom been reported in universal DNA detection.

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Cited by 30 publications
(10 citation statements)
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References 51 publications
(56 reference statements)
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“…141 Zhang et al firstly utilized a peptide as a DNA sensing element and built a novel CNT-DNA thin-film-transistor sensor. 142 Different from the former known DNA bio-detector and NanoDrop, this bioinspired sensor had a broader sensing range of 1.6 Â 10 À4 to 5 Â 10 À6 M (the detection limit was 0.88 mg L À1 ). In 2015, Wang et al firstly found that carboxyl-functionalized SWCNHs (SWCNHs-COOH) had peroxidase-like activity similar to natural peroxidase.…”
Section: Bioengineeringmentioning
confidence: 99%
“…141 Zhang et al firstly utilized a peptide as a DNA sensing element and built a novel CNT-DNA thin-film-transistor sensor. 142 Different from the former known DNA bio-detector and NanoDrop, this bioinspired sensor had a broader sensing range of 1.6 Â 10 À4 to 5 Â 10 À6 M (the detection limit was 0.88 mg L À1 ). In 2015, Wang et al firstly found that carboxyl-functionalized SWCNHs (SWCNHs-COOH) had peroxidase-like activity similar to natural peroxidase.…”
Section: Bioengineeringmentioning
confidence: 99%
“…Schematic representation of the analytical protocol and detection is represented in Figure 26B. It is also possible to fabricate CNT based devices for sensing any kind of DNA sequence [490]. To achieve this result, authors functionalized CNTs with a specific peptide (with the sequence Fmoc-RRMEHRMEW) as natural molecules having the unique ability to selec- The sensitivity of the sensor was 4 × 10 13 molecules/cm 2 .…”
Section: Carbon Nanotube Sensingmentioning
confidence: 99%
“…Replacing silicon with CNTs overcomes this scaling limit allowing for much smaller devices with the current limit being approximately 40 nm (Q. Cao et al, 2017; S. Liu & Guo, 2012). CNTs were first used within a FET device in 2000 by Dai's group (Kong et al, 2000); since then it has been shown that CNT‐FET devices can detect biological molecules both label‐free and labeled with recognition elements with detection limits as low as 0.88 μg L −1 (W. Li, Gao, et al, 2020). CNTs are an ideal material for the channel in FETs as not only are they semi‐conducting and easily modified but they are extremely sensitive to the electrical properties of their environment (Artyukhin et al, 2006) making them an ideal sensing element.…”
Section: Understanding Biology Using Nanowiresmentioning
confidence: 99%