Nitric oxide sensor based on carbon fiber covered with nickel porphyrin layer deposited using optimized electropolymerization procedure
Jazyk angličtina Země Nizozemsko Médium print-electronic
Typ dokumentu časopisecké články, práce podpořená grantem
PubMed
17084679
DOI
10.1016/j.bioelechem.2006.09.007
PII: S1567-5394(06)00129-0
Knihovny.cz E-zdroje
- MeSH
- biosenzitivní techniky přístrojové vybavení metody MeSH
- časové faktory MeSH
- dopamin analýza MeSH
- dusitany analýza MeSH
- elektrochemie MeSH
- elektrody MeSH
- fluorokarbonové polymery chemie MeSH
- karbonové vlákno MeSH
- katalýza MeSH
- kyselina askorbová analýza MeSH
- metaloporfyriny chemie MeSH
- nikl chemie MeSH
- oxid dusnatý analýza MeSH
- oxidace-redukce MeSH
- senzitivita a specificita MeSH
- sloučeniny stříbra chemie MeSH
- stříbro chemie MeSH
- uhlík chemie MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- Názvy látek
- dopamin MeSH
- dusitany MeSH
- fluorokarbonové polymery MeSH
- karbonové vlákno MeSH
- kyselina askorbová MeSH
- metaloporfyriny MeSH
- nikl MeSH
- oxid dusnatý MeSH
- perfluorosulfonic acid MeSH Prohlížeč
- silver chloride MeSH Prohlížeč
- sloučeniny stříbra MeSH
- stříbro MeSH
- uhlík 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.
Citace poskytuje Crossref.org
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