Abstract
A near infrared (NIR) optical biosensor based on peptide functionalized single-walled carbon nanotubes (SWCNTs) hybrids for 2,4,6-trinitrotoluene (TNT) explosive detection was developed. The TNT binding peptide was directly anchored on the sidewall of the SWCNTs using the π-π interaction between the aromatic amino acids and SWCNTs, forming the peptide-SWCNTs hybrids for near infrared absorption spectra measurement. The evidence of the morphology of peptide-SWCNTs hybrids was obtained using atomic force microscopy (AFM). The results demonstrated that peptide-SWCNTs hybrids based NIR optical biosensor exhibited sensitive and highly selective for TNT explosive determination, addressing a promising optical biosensor for security application.
Original language | English |
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Pages (from-to) | 49-53 |
Number of pages | 5 |
Journal | Analytical Biochemistry |
Volume | 550 |
DOIs | |
Publication status | Published - Jun 1 2018 |
Externally published | Yes |
Keywords
- Near infrared
- SWCNTs
- TNT analogues
- TNT binding peptide
- π-π interaction
ASJC Scopus subject areas
- Biophysics
- Biochemistry
- Molecular Biology
- Cell Biology