Physical Chemistry and Electrochemistry

SPR imaging

LADDS (Light Activated Drug Delivery Systems)

In the project LADDS, chemical components - gold nanoparticles or Indocyanine Green, ICG - activated with light are studied as a means to deliver drugs in a controlled manner. Components are embedded in liposomes which also contain the drug. When the system is illuminated, components absorb light and warm up, making the liposome wall more fluid and releasing the drug. The target tissue is retina in the posterior part of an eye which is very difficult to treat with drugs. Current therapy means injections to the vitreous humor which requires clinical conditions and an eye specialist.

The project is a successor of the project LITRE where the method was proved. Now, the target is to create a formulation that could be furthr developed by pharmaceutica industry. Funding: TEKES.

The surface of a liposome can be decorated with peptides which target the liposome to a desired tissue or a site of therapy. Work is done in collaboration with the Centre of Drug Research at University of Helsinki. Researcher of the project in Aalto is MSc Lauri Viitala.

Redox Flow Battery, RFB

The problem of wind and solar energy production is that it is intermittent, not always meeting the need of electric power. Therefore, storing renewable energy to level consumption peaks and lows becomes very important. Large amounts of electric energy are mainly stored in pumped hydropower. From electrochemical methods a flow battery is practically the only one which is easily scalable to the MWh range. The principle of operation of a redox flow battery is presented in Figure 2, also showing the electrode reactions of the all-copper RFB. The capacity of a RFB can in principle be increased without limits by increasing the volume of the electrolyte tanks.

The vanadium RFB is already commercialized but the limited availability of vanadium prevents its use on the global scale. Hence, the focus of our research is to develop a RFB that is based on copper electrochemistry. The study has been funded by TEKES. Project leader is Pertti Kauranen.

Soft thermoelectrical materials (Heat Harvest)

In this project, our interest relies on non-isothermal processes, in which small temperature differences can be converted into electric current (Seebeck effect), or inversely, a small electric current can be used to adjust temperature (Peltier effect). Conventional thermoelectric materials are semiconductors where electrons (and holes) are carrying the electric current. These materials tend to perform better at high temperatures. We are investigating a new paradigm of soft thermoelectric materials where ions are current carriers and which can be run close to room temperature.

The project researcher is MSc Miikka Jokinen (below); the project is part of the project HeatHarvest coordinated by prof. Maarit Karppinen.

Electrochemistry at the liquid-liquid interface

During the past 30 years, we have studied the electrochemistry of liquid-liquid interfaces, which is quite an original area of research in the field of electrochemistry. Now the research is focused to the metal extraction boosted with Galvani potential difference across the interface.

Research group members

Eemi Nieminen

Department of Chemistry and Materials Science
Doctoral Candidate

Pertti Kauranen

Department of Chemistry and Materials Science
Specialist
Lasse Murtomäki

Lasse Murtomäki

Department of Chemistry and Materials Science
Professor (Associate Professor)
Pekka Peljo

Pekka Peljo

Department of Chemistry and Materials Science
Academy Research Fellow

Saija Pajari

Department of Chemistry and Materials Science
Research Assistant

Mahdi Moghaddam

Department of Chemistry and Materials Science
Doctoral Candidate

Kuldeep Kuldeep

Department of Chemistry and Materials Science
Doctoral Candidate

Latest publications

Physical Chemistry and Electrochemistry, Department of Chemistry and Materials Science

Axial dispersion and CFD models for the extraction of levulinic acid from dilute aqueous solution in a Kühni column with 2-methyltetrahydrofuran solvent

Publishing year: 2019 Chemical Engineering Research and Design
Physical Chemistry and Electrochemistry, Department of Chemistry and Materials Science

Closed Bipolar Electrochemistry in a Four-Electrode Configuration

Publishing year: 2019 Physical Chemistry Chemical Physics
Department of Chemistry and Materials Science, Physical Chemistry and Electrochemistry, Bioorganic Chemistry, Soft Materials Modelling, Department of Bioproducts and Biosystems

Shape and Phase Transitions in a PEGylated Phospholipid System

Publishing year: 2019 Langmuir
Department of Chemistry and Materials Science, Physical Chemistry and Electrochemistry

Photothermal Liposomal Drug Delivery Systems - Physicochemical Aspects in Particle Characterization and Drug Release from Light-Sensitive Drug Carriers

Publishing year: 2019
Department of Chemistry and Materials Science, Physical Chemistry and Electrochemistry, Hydrometallurgy and Corrosion, Department of Chemical and Metallurgical Engineering

Towards Finnish Battery Metal Ecosystem

Publishing year: 2018
Department of Mechanical Engineering, Energy Efficiency and Systems, Physical Chemistry and Electrochemistry, Department of Chemistry and Materials Science

Economic feasibility of flow batteries in grid-scale applications

Publishing year: 2018
Department of Chemistry and Materials Science, Physical Chemistry and Electrochemistry, Analytical Chemistry

Immunoassay of C-reactive protein by hot electron-induced electrochemiluminescence at polystyrene-carbon black composite electrodes

Publishing year: 2018 Electrochimica Acta
Department of Chemistry and Materials Science, Physical Chemistry and Electrochemistry

Extended Pharmacokinetic Model of the Rabbit Eye for Intravitreal and Intracameral Injections of Macromolecules

Publishing year: 2018 Pharmaceutical Research
Physical Chemistry and Electrochemistry, Department of Chemistry and Materials Science

Soret coefficient of trace ions determined with electrochemical impedance spectroscopy in a thin cell. Theory and measurement

Publishing year: 2018 Journal of Electroanalytical Chemistry
Molecular Materials, Department of Applied Physics, Physical Chemistry and Electrochemistry, Department of Chemistry and Materials Science, Bio-based Colloids and Materials, Department of Bioproducts and Biosystems

Inverse Thermoreversible Mechanical Stiffening and Birefringence in a Methylcellulose/Cellulose Nanocrystal Hydrogel

Publishing year: 2018 Biomacromolecules
More information on our research in the Research database.
Research database
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