@article { , title = {A route to unbuffered pH monitoring: A novel electrochemical approach}, abstract = {Carbon paste electrodes modified by various dihydroxyquinone derivatives are investigated using both cyclic voltammetry and square wave voltammetry in order to ascertain suitability as voltammetric pH sensors. These electrodes show a Nernstian response to the change of pH, with a potential shift close to the theoretical value, 59.2 mV per pH unit at 298 K. Moreover, their capability of measuring the pH of the unbuffered solution with less than 5\% error can be attributed to the occurrence of both inter- and intra- molecular hydrogen bonding present within the system. The efficacy of the compounds to be used as materials for solid state pH sensors is discussed.}, doi = {10.1016/j.electacta.2016.01.004}, issn = {0013-4686}, journal = {Electrochimica Acta}, pages = {879-886}, publicationstatus = {Published}, publisher = {Elsevier}, url = {https://hull-repository.worktribe.com/output/1738786}, volume = {190}, keyword = {Specialist Research - Other, pH sensor, Unbuffered media, Carbon paste, Dihydroxyquinone derivatives, Hydrogen bonding}, year = {2016}, author = {Dai, Chencheng and Chan, Chun-Wai I. and Barrow, William and Smith, Anna and Song, Peng and Potier, Francois and Wadhawan, Jay D. and Fisher, Adrian C. and Lawrence, Nathan S.} }