In Situ Recalibration of Ion Selective Electrodes (2021)
Journal Article
Wadhawan, J., & Lawrence, N. (in press). In Situ Recalibration of Ion Selective Electrodes. Sensors and Diagnostics, https://doi.org/10.1039/D1SD00003A

Reference electrode drift resulting from the exchange of ions at the solution/reference electrode chamber interface is the number one reason why ion selective electrodes and pH sensors in particular require recalibration, costing companies up to 70 %... Read More about In Situ Recalibration of Ion Selective Electrodes.

Electrochemically Induced Mesomorphism Switching in a Chlorpromazine Hydrochloride Lyotropic Liquid Crystal (2021)
Journal Article
Crapnell, R. D., Alhasan, H. S., Partington, L. I., Zhou, Y., Ahmed, Z., Altalhi, A. A., …Wadhawan, J. D. (2021). Electrochemically Induced Mesomorphism Switching in a Chlorpromazine Hydrochloride Lyotropic Liquid Crystal. ACS Omega, 6(7), 4630-4640. https://doi.org/10.1021/acsomega.0c05284

The discovery of electrochemical switching of the Lα phase of chlorpromazine hydrochloride in water is reported. The phase is characterized using polarizing microscopy, X-ray scattering, rheological measurements, and microelectrode voltammetry. Fast,... Read More about Electrochemically Induced Mesomorphism Switching in a Chlorpromazine Hydrochloride Lyotropic Liquid Crystal.

Intra- and Inter-molecular Sulf- hydryl Hydrogen Bonding: Facilitating Proton Transfer Events for Determination of pH in Sea Water (2020)
Journal Article
Sisodia, N., Miranda, M., McGuinness, K. L., Wadhawan, J. D., & Lawrence, N. S. (in press). Intra- and Inter-molecular Sulf- hydryl Hydrogen Bonding: Facilitating Proton Transfer Events for Determination of pH in Sea Water. Electroanalysis, https://doi.org/10.1002/elan.202060332

© 2020 Wiley-VCH GmbH This work presents the electrochemical response of a 2-(methylthio)phenol glassy carbon based electrode for a promising voltammetric pH sensor in both buffered and low-buffered solutions. Electropolymerization of the redox speci... Read More about Intra- and Inter-molecular Sulf- hydryl Hydrogen Bonding: Facilitating Proton Transfer Events for Determination of pH in Sea Water.

Evaporative Mass Loss Measurement as a Quality Control Tool for Quality Assurance in the Manufacture of Inks Suitable for High Speed (≥60 m/min) Printing (2020)
Journal Article
Ward, H. J., Ward, H. J., Armstrong-Telfer, T. A., Armstrong-Telfer, T. A., Kelly, S. M., Kelly, S. M., …Wadhawan, J. D. (2020). Evaporative Mass Loss Measurement as a Quality Control Tool for Quality Assurance in the Manufacture of Inks Suitable for High Speed (≥60 m/min) Printing. Journal of Electroanalytical Chemistry, 872, Article 114328. https://doi.org/10.1016/j.jelechem.2020.114328

In any manufacturing environment, it is always important to be able to embrace a culture of traceability of any non-conformed product. For the case of ink manufacture, operator confusion, leading to the mixing-up of solvents, or connecting the incorr... Read More about Evaporative Mass Loss Measurement as a Quality Control Tool for Quality Assurance in the Manufacture of Inks Suitable for High Speed (≥60 m/min) Printing.

Regular Solution Theory for Polymer Permeation Transients: A Toolkit for Understanding Experimental Waveshapes (2020)
Journal Article
Wadhawan, J., Craster, B. ;., Lawrence, N., & Kelly, S. M. (2020). Regular Solution Theory for Polymer Permeation Transients: A Toolkit for Understanding Experimental Waveshapes. Langmuir : the ACS journal of surfaces and colloids, 36(18), 5003-5020. https://doi.org/10.1021/acs.langmuir.0c00589

The accurate measurement of permeation is important at the product design stage for a variety of industries as diverse as conveyance methods for oil and gas produced fluids, such as mixtures of carbon dioxide, methane, hydrogen sulfide, water, and hy... Read More about Regular Solution Theory for Polymer Permeation Transients: A Toolkit for Understanding Experimental Waveshapes.

Performance of lyotropic liquid crystal-based photoelectrochemical capacitors for solar-to- electrical energy conversion (2018)
Conference Proceeding
Halls, J. E., Ward, H. J., Althali, A. A., Testut, L., Kocsis, D., Alhassan, H. S., …Wadhawan, J. D. (2018). Performance of lyotropic liquid crystal-based photoelectrochemical capacitors for solar-to- electrical energy conversion. In F. Kongoli, H. Inufasa, M. Boutelle, R. Compton, J. Dubois, & F. Murad (Eds.), Sustainable Industrial Processing Summit SIPS2018 Volume 2. Amatore Intl. Symp. / on Electrochemistry for Sustainable Development (121-130)

Regenerative photoelectrochemical capacitors, adapted from a experimental system previously reported (J. E. Halls, J. D. Wadhawan, Energy Environ. Sci., 2012, 5, 6541) and based on the doping of a lamellar lyotropic liquid crystal with visible light... Read More about Performance of lyotropic liquid crystal-based photoelectrochemical capacitors for solar-to- electrical energy conversion.

Electrochemical measurement of antibody­‐antigen recognition biophysics: thermodynamics and kinetics of human chorionic gonadotropin (hCG) binding to redox-­tagged antibodies (2018)
Journal Article
Partington, L. I., Atkin, S. L., Kilpatrick, E. S., Morris, S. H., Piper, M., Lawrence, N. S., & Wadhawan, J. D. (2018). Electrochemical measurement of antibody­‐antigen recognition biophysics: thermodynamics and kinetics of human chorionic gonadotropin (hCG) binding to redox-­tagged antibodies. Journal of Electroanalytical Chemistry, 819, 533-541. https://doi.org/10.1016/j.jelechem.2018.02.062

The thermodynamics and kinetics of antigen binding under diffusive conditions to an electrode surface modified with ferrocene-tagged antibodies is studied within this work, and realised experimentally for the case of human chorionic gonadotropin (hGC... Read More about Electrochemical measurement of antibody­‐antigen recognition biophysics: thermodynamics and kinetics of human chorionic gonadotropin (hCG) binding to redox-­tagged antibodies.

Large-Scale Production of V6O13 Cathode Materials Assisted by Thermal Gravimetric Analysis-Infrared Spectroscopy Technology (2016)
Journal Article
Liang, H. P., Du, J., Jones, T. G., Lawrence, N. S., & Meredith, A. W. (2016). Large-Scale Production of V6O13 Cathode Materials Assisted by Thermal Gravimetric Analysis-Infrared Spectroscopy Technology. ACS Applied Materials & Interfaces, 8(39), 25674-25679. https://doi.org/10.1021/acsami.6b10832

© 2016 American Chemical Society. The kilogram-scale fabrication of V6O13 cathode materials has been notably assisted by in situ thermal gravimetric analysis (TGA)-infrared spectroscopy (IR) technology. This technology successfully identified a resid... Read More about Large-Scale Production of V6O13 Cathode Materials Assisted by Thermal Gravimetric Analysis-Infrared Spectroscopy Technology.

A mechanistic study of the EC′ mechanism – the split wave in cyclic voltammetry and square wave voltammetry (2016)
Journal Article
Song, P., Fisher, A. C., Wadhawan, J. D., Cooper, J. J., Ward, H. J., & Lawrence, N. S. (in press). A mechanistic study of the EC′ mechanism – the split wave in cyclic voltammetry and square wave voltammetry. RSC advances, 6(74), 70237-70242. https://doi.org/10.1039/c6ra08723j

In this paper, a detailed investigation of electrochemical reactions coupled with homogenous chemical steps using cyclic voltammetry (CV) and square wave voltammetry (SWV) was carried out to study the electrocatalytic (EC’) mechanism. In CV, paramete... Read More about A mechanistic study of the EC′ mechanism – the split wave in cyclic voltammetry and square wave voltammetry.

A route to unbuffered pH monitoring: A novel electrochemical approach (2016)
Journal Article
Dai, C., Chan, C. I., Barrow, W., Smith, A., Song, P., Potier, F., …Lawrence, N. S. (2016). A route to unbuffered pH monitoring: A novel electrochemical approach. Electrochimica acta, 190, 879-886. https://doi.org/10.1016/j.electacta.2016.01.004

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 respon... Read More about A route to unbuffered pH monitoring: A novel electrochemical approach.

A novel sensor based on electropolymerized substituted-phenols for pH detection in unbuffered systems (2015)
Journal Article
Dai, C., Crawford, L. P., Song, P., Fisher, A. C., & Lawrence, N. S. (2015). A novel sensor based on electropolymerized substituted-phenols for pH detection in unbuffered systems. RSC advances, 5(126), 104048-104053. https://doi.org/10.1039/c5ra22595g

This work summarizes the electrochemical response of a range of substituted phenols, including salicylaldehyde and salicylic acid, for use as a voltammetric pH sensor for the determination of pH in both buffered and unbuffered media. Suitable candida... Read More about A novel sensor based on electropolymerized substituted-phenols for pH detection in unbuffered systems.