title: A simultaneous voltammetric temperature and humidity sensor.
abstract: We report the simultaneous measurement of temperature and humidity by analysing square wave voltammetric responses of two ferrocene derivatives, decamethylferrocene (DmFc) and 1,2-diferrocenylethylene (bisferrocene, BisFc) in 1-(2-methoxyethyl)-1-methyl-pyrrolidinium tris(pentafluoroethyl)trifluorophosphate ([Moepyrr][FAP]). These two molecules produce three peaks in square wave voltammetry. Through study of the peak potentials of BisFc/BisFc(+) (vs. DmFc/DmFc(+)) and BisFc(+)/BisFc(2+) (vs. DmFc/DmFc(+)) over a temperature range of 298 K to 318 K and humidity range of 1% to 50% using square wave voltammetry, the temperature and humidity dependences of the relative peak potentials were investigated. A reliable method to calculate the humidity and temperature based on the voltammetric experiment is characterised and demonstrated.
authors.affiliation: Department of Chemistry, Physical and Theoretical Chemistry Laboratory, University of Oxford, South Parks Road, Oxford OX1 3QZ, UK.
authors.forename: Linhongjia
authors.initials: L
authors.lastname: Xiong
authors.forename: Ai M
authors.initials: AM
authors.lastname: Fletcher
authors.forename: Stephen G
authors.initials: SG
authors.lastname: Davies
authors.forename: Sarah E
authors.initials: SE
authors.lastname: Norman
authors.forename: Christopher
authors.initials: C
authors.lastname: Hardacre
authors.forename: Richard G
authors.initials: RG
authors.lastname: Compton