Published in Analytical Chemistry, 2016
A novel approach to signal transduction concerning solid-contact ion-selective electrodes (SC-ISE) with a conducting polymer (CP) as the solid contact is investigated.
Recommended citation: Vanamo, U. et al., "New Signal Readout Principle for Solid-Contact Ion-Selective Electrodes", Anal. Chem., 2016, 88, 8, 4369–4374 https://doi.org/10.1021/acs.analchem.5b04800
Published in Beilstein Journal of Organic Chemistry, 2020
Carboxylate sensing solid-contact ion-selective electrodes (ISEs) were created to provide a proof-of-concept ISE development process covering all aspects from in silico ionophore design to functional sensor characterization.
Recommended citation: Rüütel, A. et al., "Design, synthesis and application of carbazole macrocycles in anion sensors", Beilstein J. Org. Chem., 2020, 16, 1901-1914 https://doi.org/10.3762/bjoc.16.157
Published in Chemosensors, 2020
Solid-contact ion-selective electrodes with carbazole-derived ionophores were prepared.
Recommended citation: Yrjänä, V. et al., "Potentiometric Carboxylate Sensors Based on Carbazole-Derived Acyclic and Macrocyclic ionophores", Chemosensors, 2021, 9(1), 4 https://doi.org/10.3390/chemosensors9010004
Published in Journal of Open Source Software, 2022
Electrochemical impedance spectroscopy (EIS) is a technique that is widely used to characterize the properties of materials used in, e.g., batteries and ion-selective electrodes.
Recommended citation: Yrjänä, V., "DearEIS - A GUI program for analyzing impedance spectra", Journal of Open Source Software, 2022, 7(80), 4808 https://doi.org/10.21105/joss.04808
Published in Biomacromolecules, 2023
One-dimensional (1D) nanomaterials of conductive polypyrrole (PPy) are competitive biomaterials for constructing bioelectronics to interface with biological systems.
Recommended citation: Liang, S. et al., "Aqueous Processable One-Dimensional Polypyrrole Nanostructured by Lignocellulose Nanofibril: A Conductive Interfacing Biomaterial", Biomacromolecules, 2023, 24, 8, 3819-3834 https://doi.org/10.1021/acs.biomac.3c00475
Published in Talanta, 2024
In this work, a solid-contact benzoate-selective electrode (benzoate-ISE) was developed by utilising poly(3,4-ethylenedioxythiophene) (PEDOT) as solid contact and a solvent polymeric membrane containing a 1,3-bis(carbazolyl)urea derivative as ionophore.
Recommended citation: Manandhar, S. et al., "Determination of benzoate in cranberry and lingonberry by using a solid-contact benzoate-selective electrode", Talanta, 2024, 274, 125996 https://doi.org/10.1016/j.talanta.2024.125996
Published in Joule, 2024
The distribution of relaxation times (DRT) offers a non-parametric approach that simplifies the interpretation process by providing a timescale interpretation of EIS data.
Recommended citation: Maradesa, A. et al., "Advancing electrochemical impedance analysis through innovations in the distribution of relaxation times method", Joule, 2024, 8 (7), P1958-1981 https://doi.org/10.1016/j.joule.2024.05.008
Published in Electrochimica Acta, 2024
Methods for automating the selection of key parameters for linear Kramers–Kronig tests are described.
Recommended citation: Yrjänä, V. and Bobacka, J., "Methods for automating and improving the robustness of linear {Kramers-Kronig} tests for the purposes of validating immittance spectra", Electrochim. Acta, 2024, 504, 144951 https://doi.org/10.1016/j.electacta.2024.144951
GUI program and Python API for processing, analyzing, and visualizing impedance spectra
Python API for processing, analyzing, and visualizing impedance spectra
BSc. course, Åbo Akademi University, Faculty of Science and Engineering, 2018
Supervision of a lab exercise about constructing galvanic cells.
Course type, Åbo Akademi University, Faculty of Science and Engineering, 2018
Supervision of lab exercises involving glucose biosensors and chronoamperometric measurements.
MSc. course, Åbo Akademi University, Faculty of Science and Engineering, 2020
Thirty-minute presentations on some subject pertaining to analytical chemistry.
BSc. course, Åbo Akademi University, Faculty of Science and Engineering, 2020
Partial supervision of a lab exercise involving hair sample analysis.
Outreach program aimed at high school students, Åbo Akademi University, Faculty of Science and Engineering, 2022
Week-long course where high school students could familiarize themselves with the different subjects available at Åbo Akademi University (e.g., chemistry and physics).
MSc. course, Åbo Akademi University, Faculty of Science and Engineering, 2024
Supervision of a lab exercise regarding the electrochemical impedance spectroscopy (EIS).