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| Content Provider | Springer Nature Link |
|---|---|
| Author | Chekin, Fereshteh Bagheri, Samira |
| Copyright Year | 2016 |
| Abstract | Phthaloylchitosan (PHCS) has been synthesized by a simple and low-cost method using chitosan and phthalic anhydride as organic precursors by microwave irradiation. Techniques of nuclear magnetic resonance (NMR), FT-IR spectroscopy and transmission electron microscope (TEM) were used to characterize the structure and properties of the Phthaloylchitosan. Moreover, glassy carbon electrode modified with Phthaloylchitosan and carbon nanotube (PHCS–CNT/GCE) was prepared by casting of the PHCS–CNT solution on GCE. The electrochemical behavior of PHCS–CNT/GCE was investigated and compared with the electrochemical behavior of Phthaloylchitosan modified GC (PHCS/GC), carbon nanotube modified GC (CNT/GC) and unmodified GC using cyclic voltammetry (CV). The Phthaloylchitosan film is electrochemically inactive; similar background charging currents are observed at bare GC. Electrochemical parameters, including apparent diffusion coefficient for the Fe(CN) 6 3-/4- redox probe at PHCS–CNT/GCE is comparable to values reported for GCE, CNT/GCE and PHCS/GCE. The PHCS–CNT/GCE sensor responded linearly to tyrosine (Tyr) in the concentration of 1.0 × 10$^{–6}$ to 8.0 × 10$^{–4}$ M with detection limit of 3.0 × 10$^{–7}$ M at 3σ using amperometry. In addition, the PHCS–CNT/GCE displayed good reproducibility, high sensitivity and good selectivity towards the determination of Tyr, making it suitable for the determination of Tyr in clinical and medicine. |
| Starting Page | 174 |
| Ending Page | 180 |
| Page Count | 7 |
| File Format | |
| ISSN | 10231935 |
| Journal | Russian Journal of Electrochemistry |
| Volume Number | 52 |
| Issue Number | 2 |
| e-ISSN | 16083342 |
| Language | English |
| Publisher | Pleiades Publishing |
| Publisher Date | 2016-03-30 |
| Publisher Place | Moscow |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | phthaloylchitosan tyrosine carbon nanotubes electrocatalysis modified electrode Electrochemistry Physical Chemistry |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electrochemistry |
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