Nitric oxide sensor based on carbon fiber covered with nickel porphyrin layer deposited using optimized electropolymerization procedure
Language English Country Netherlands Media print-electronic
Document type Journal Article, Research Support, Non-U.S. Gov't
PubMed
17084679
DOI
10.1016/j.bioelechem.2006.09.007
PII: S1567-5394(06)00129-0
Knihovny.cz E-resources
- MeSH
- Biosensing Techniques instrumentation methods MeSH
- Time Factors MeSH
- Dopamine analysis MeSH
- Nitrites analysis MeSH
- Electrochemistry MeSH
- Electrodes MeSH
- Fluorocarbon Polymers chemistry MeSH
- Carbon Fiber MeSH
- Catalysis MeSH
- Ascorbic Acid analysis MeSH
- Metalloporphyrins chemistry MeSH
- Nickel chemistry MeSH
- Nitric Oxide analysis MeSH
- Oxidation-Reduction MeSH
- Sensitivity and Specificity MeSH
- Silver Compounds chemistry MeSH
- Silver chemistry MeSH
- Carbon chemistry MeSH
- Publication type
- Journal Article MeSH
- Research Support, Non-U.S. Gov't MeSH
- Names of Substances
- Dopamine MeSH
- Nitrites MeSH
- Fluorocarbon Polymers MeSH
- Carbon Fiber MeSH
- Ascorbic Acid MeSH
- Metalloporphyrins MeSH
- Nickel MeSH
- Nitric Oxide MeSH
- perfluorosulfonic acid MeSH Browser
- silver chloride MeSH Browser
- Silver Compounds MeSH
- Silver MeSH
- Carbon MeSH
Electropolymerization regime of meso-tetrakis(3-methoxy-4-hydroxyphenyl) porphyrin is optimized to yield films possessing both electrocatalytical and permselective properties towards nitric oxide oxidation. The sensor composed of electrochemically oxidized carbon fiber, covered solely with nickel porphyrin derivative layer electropolymerized using our method, is characterized by high selectivity towards nitrite (1:600), ascorbate (1:8000) and dopamine (>1:80), determined by constant potential amperometry at 830 mV (vs. Ag/AgCl). Selectivity for ascorbate and dopamine as well as detection limit for NO (1.5 nM at S/N=3) is 5-10 times better than parameters usually reported for Nafion coated porphyrinic sensors. Nafion coating can further enhance selectivity properties as well as aids to the stability of the sensors' responses.
References provided by Crossref.org
Electrochemically pretreated carbon microfiber electrodes as sensitive HPLC-EC detectors
