caa a22 4500 445880635 CHVBK 20180317145541.0 cr unu---uuuuu 170323e20110601xx s 000 0 eng 10.1007/s00604-011-0563-x doi (NATIONALLICENCE)springer-10.1007/s00604-011-0563-x Voltammetric sensing of guanine and adenine using a glassy carbon electrode modified with a tetraoxocalix[2]arene[2]triazine Langmuir-Blodgett film [Elektronische Daten] [Lina Zou, Yamin Li, Baoxian Ye] We have prepared a new voltammetric sensor for guanine and adenine. It is based on a glassy carbon electrode modified with a Langmuir-Blodgett film made from tetraoxocalix[2]arene[2]triazine. The direct electro-oxidation of adenine and guanine was investigated and the results indicat that in contrast to a bare glassy carbon electrode both guanine and adenine cause an increase in the oxidation peak currents along with a negative shift of the oxidation potentials. The electrode enables the simultaneous determination of guanine and adenine using square wave voltammetry. Analysis of acid denatured calf thymus DNA was carried out and the value of (G + C)/(A + T) was correctly found to be 0.75. Figure Both guanine and adenine showed the increase of the oxidation peak currents on LBTOCT-GCE in contrast to that on the bare glassy carbon electrode (GCE). Springer-Verlag, 2011 Tetraoxocalix[2]arene[2]triazine nationallicence Langmuir-Blodgett film nationallicence Electrochemical detection nationallicence Guanine nationallicence Adenine nationallicence DNA nationallicence Zou Lina Department of Chemistry, Zhengzhou University, 450052, Zhengzhou, The People's Republic of China aut Li Yamin Department of Chemistry, Zhengzhou University, 450052, Zhengzhou, The People's Republic of China aut Ye Baoxian Department of Chemistry, Zhengzhou University, 450052, Zhengzhou, The People's Republic of China aut Microchimica Acta Springer Vienna 173/3-4(2011-06-01), 285-291 0026-3672 173:3-4<285 2011 173 604 https://doi.org/10.1007/s00604-011-0563-x text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00604-011-0563-x text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Zou Lina Department of Chemistry, Zhengzhou University, 450052, Zhengzhou, The People's Republic of China aut NATIONALLICENCE 700 1- Li Yamin Department of Chemistry, Zhengzhou University, 450052, Zhengzhou, The People's Republic of China aut NATIONALLICENCE 700 1- Ye Baoxian Department of Chemistry, Zhengzhou University, 450052, Zhengzhou, The People's Republic of China aut NATIONALLICENCE 773 0- Microchimica Acta Springer Vienna 173/3-4(2011-06-01), 285-291 0026-3672 173:3-4<285 2011 173 604 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer