. . "4"^^ . . "Goh, Madeline Shuhua" . . . . "SHEETS; MECHANISM; REDUCTION; NANOSHEETS; ELECTRODES; DISPERSIONS; ADENINE; ADSORPTION; GRAPHITE OXIDE; ELECTROCHEMICAL OXIDATION"@en . . . "000296153200017" . . "10.1039/c1an15631d" . "136" . "Pumera, Martin" . "RIV/60461373:22310/11:43892065" . . "RIV/60461373:22310/11:43892065!RIV12-MSM-22310___" . "Chemically Modified Graphenes for Oxidation of DNA bases: Analytical Parameters" . . . . . "190128" . "Bonanni, Alessandra" . "GB - Spojen\u00E9 kr\u00E1lovstv\u00ED Velk\u00E9 Brit\u00E1nie a Severn\u00EDho Irska" . . . "0003-2654" . "Sofer, Zden\u011Bk" . "Chemically Modified Graphenes for Oxidation of DNA bases: Analytical Parameters"@en . . "Analyst (London)" . "22310" . "22" . "7"^^ . "[4883DFF9BEED]" . . . . "P(GA104/09/0621), Z(MSM6046137302)" . . "Chemically Modified Graphenes for Oxidation of DNA bases: Analytical Parameters" . "We studied the electroanalytical performances of chemically-modified graphenes (CMGs) containing different defect densities and amounts of oxygen-containing groups, namely graphite oxide (GPO), graphene oxide (GO), thermally reduced graphene oxide (TR-GO) and electrochemically reduced graphene oxide (ER-GO) by comparing the sensitivity, selectivity, linearity and repeatability towards the oxidation of DNA bases. We have observed that for differential pulse voltammetric (DPV) detection of adenine and cytosine, all CMGs showed enhanced sensitivity to oxidation, while for guanine and thymine, ER-GO and TR-GO exhibited much improved sensitivity over bare glassy carbon (GC) as well as over GPO and GO. There is also significant selectivity enhancement when using GPO for adenine and TR-GO for thymine. Our results have uncovered that the differences in surface functionalities, structure and defects of various CMGs largely influence their electrochemical behaviour in detecting the oxidation of DNA bases." . . "We studied the electroanalytical performances of chemically-modified graphenes (CMGs) containing different defect densities and amounts of oxygen-containing groups, namely graphite oxide (GPO), graphene oxide (GO), thermally reduced graphene oxide (TR-GO) and electrochemically reduced graphene oxide (ER-GO) by comparing the sensitivity, selectivity, linearity and repeatability towards the oxidation of DNA bases. We have observed that for differential pulse voltammetric (DPV) detection of adenine and cytosine, all CMGs showed enhanced sensitivity to oxidation, while for guanine and thymine, ER-GO and TR-GO exhibited much improved sensitivity over bare glassy carbon (GC) as well as over GPO and GO. There is also significant selectivity enhancement when using GPO for adenine and TR-GO for thymine. Our results have uncovered that the differences in surface functionalities, structure and defects of various CMGs largely influence their electrochemical behaviour in detecting the oxidation of DNA bases."@en . . . . "1"^^ . "Chemically Modified Graphenes for Oxidation of DNA bases: Analytical Parameters"@en .