67708-22-9Relevant articles and documents
METAL-ORGANIC FRAMEWORKS FOR ELECTROCHEMICAL DETECTION OF ANALYTES
-
Paragraph 0028; 0031-0032; 0034-0035; 0047-0050; 0162-0165;., (2021/08/27)
In some embodiments, the present disclosure pertains to methods of detecting an analyte in a sample by associating the sample with an electrode that includes a metal-organic framework. After association, the redox properties of the electrode are evaluated. Thereafter, the presence or absence of the analyte in the sample is detected by correlating the redox properties of the electrode to the presence or absence of the analyte. In some embodiments, the present disclosure pertains to electrodes that include a metal-organic framework and an electrode surface. In particular embodiments of the present disclosure, the metal-organic framework is associated with the electrode surface. Additional embodiments of the present disclosure pertain to methods of making the electrodes of the present disclosure by associating a metal-organic framework with an electrode surface. In some embodiments, the methods of the present disclosure also include a step of mixing the metal-organic framework with a polymer.
Simultaneous determination of ascorbic acid, dopamine, uric acid, and tryptophan by nanocrystalline ZSM-5 modified electrodes
Kaur, Balwinder,Srivastava, Rajendra
, p. 6539 - 6550 (2015/01/09)
Nanocrystalline ZSM-5 was prepared by using propyltriethoxysilane as an additive in the conventional ZSM-5 synthesis composition. Materials were characterized by a complementary combination of X-ray diffraction, nitrogen sorption, and Scanning electron microscopy. Transition metal ion exchanged nanocrystalline ZSM-5 (M-Nano-ZSM-5, where M = Cu2+, Ni2+, Co2+, Fe2+, and Mn2+) modified electrodes were constructed for the simultaneous determination of ascorbic acid (AA), dopamine (DA), uric acid (UA), and tryptophan (Trp). Electrochemical studies were carried out by using cyclic voltammetry, linear sweep voltammetry, and chronoamperometry in buffer solution at pH 3.5. Fe-Nano-ZSM-5 modified electrode exhibited excellent electrocatalytic activity with wellseparated oxidation peaks towards AA, DA, UA, and Trp in their simultaneous determination. Among the M-Nano-ZSM-5 and transition metal ion-exchanged ZSM-5 (M-ZSM-5) materials investigated in this study, Fe-Nano-ZSM-5 exhibited the highest catalytic activities towards the oxidation of AA, DA, UA, and Trp with good stability, sensitivity, and selectivity. The analytical performance of this sensor was demonstrated for the simultaneous determination of AA, DA, UA, and Trp in blood serum and UA concentration in urine samples.
Voltammetric resolution of dopamine in the presence of ascorbic acid and uric acid at poly (calmagite) film coated carbon paste electrode
Chandra, Umesh,Kumara Swamy,Gilbert, Ongera,Sherigara
scheme or table, p. 7166 - 7174 (2011/01/06)
The poly (calmagite) film was synthesized on the surface of carbon paste electrode by electrochemical method. The synthesized polymer film coated electrode exhibits excellent electrocatalytic activity towards the detection of dopamine at neutral pH. The scan rate effect was found to be adsorption controlled electrode process. The concentration effect of dopamine was studied. The redox peak potentials of dopamine were depend on pH. This polymer film coated electrode was very good at simultaneous study of dopamine in the presence of high concentrated ascorbic acid and uric acid. The incorporation study was done by varying the concentration of one species while other two are kept constant. The proposed method was applied to the detection of dopamine in injection samples.
