The goal of this thesis is to understand how interfacial parameters, such as the addition of organic additives, bulk pH or metal cations of the electrolyte, affect the relevant electrocatalytic reactions, i.e. electrochemical CO2 reduction reaction or hydrogen evolution reaction.

Galaxies form and evolve through close interaction with their surroundings. As a result, the heavy elements ('metals') that are synthesized in stars, are found both inside and outside galaxies.

We use DNA strands to stabilize few-atom silver clusters, which show unique optical and chemical properties. This thesis involves the study of these constructs for various applications.

Promotores: Prof.dr.G.R. de Snoo and Dr. R. Heijungs

At the faculty of Governance and Global Affairs we are proud to celebrate social entrepreneurship, which is why we decided to introduce you to an amazing project by two of our students: Kimberly Schoenmaker and Caroline Flohr. Ambitious, driven and incredibly conscious of the corporate responsibility…

Chemici Marc Koper en Lies Bouwman worden geinterviewd door Mare Online over de overstap naar een duurzame economie.

Hoe gaan we in de toekomst energie opwekken zonder nog meer bij te dragen aan de opwarming van de aarde? Industrieel ecoloog René Kleijn spreekt over koolstofarme energie op radio en tv voor het programma Focus, en vertelt erover in de VPRO-gids.

Promotores: Prof.dr. G.A. Persoon & Prof. dr. H.H. de Iongh

Promotores: Prof.dr. J. Aarts, Prof.dr. J.M. van Ruitenbeek

The focus throughout this thesis will be on gathering fundamental studies of the detailed structure and composition of the electrode/electrolyte interface effect on the rate and mechanism of key electrocatalytic reactions.

Galaxies are environments where gas coalesces, cools, and is converted into stars. However, it remains unclear the exact mechanisms through which galaxies acquire, redistribute and lose their gas.

This thesis focuses on the X-ray spectral analysis of merging galaxy clusters and the plasma code development for future high-resolution X-ray spectroscopy observations.

Surface plasmons (SPs) are surface waves at the interface between a dielectric and a good metal, and are formed by the interaction between light and the free electrons at the metal-dielectric interface. They provide strong field confinement for optical fields, opening new possibilities for enhanced…

This thesis explores how electron paramagnetic resonance (EPR) spectroscopy can be used to investigate key biochemical processes.

Materials with strongly correlated electrons show some of the most mysterious and exotic phases of quantum matter, such as unconventional superconductivity, quantum criticality and strange metal phase.

The main subject of this thesis is the design and synthesis of paramagnetic molecules for protein studies with NMR and EPR spectroscopy.

The redox-conversion reaction of metal-disulfide and metal-thiolate complexes are important, as they may shed light on electron-transfer reactions that often occur in Nature.

Als groente en fruit rijp worden, komt het gas etheen vrij. Etheen beïnvloedt ook de snelheid van de rijping. Chemicus Tom van Dijkman onderzocht hoe kleine en goedkope sensoren gemaakt kunnen worden om etheenconcentraties te meten tijdens het transport. Promotie op 12 mei 2016.

Promotie

Metal-based prodrugs based on ruthenium(II) polypyridyl complexes have proven to be very suitable for application in both photodynamic therapy (PDT) and photo-activated chemotherapy (PACT).

Debat, Student Course Presentations

Chemicus Sylvestre Bonnet heeft een Proof of Concept-subsidie van de European Research Council (ERC) ontvangen. Met de beurs van 150.000 euro gaat Bonnet onderzoeken of een chemotherapie die door licht geactiveerd wordt, ingezet kan worden tegen oogkanker.

In this thesis, the researcher developed a nanosystem based on the metallophilic Interaction between cyclometalated complexes.

The interest of this thesis lies in spin transport in normal metals and superconducting half-metallic junctions.

Promotor: E. Bouwman, Co-Promotor: S. Bonnet

Projecten van de afdeling Environmental Biology

Indonesia is experiencing various environmental challenges related to its fast economic growth. Therefore, it is necessary to have measurable and applicable indicators to obtain accurate data and information regarding the costs of adverse environmental impacts arising from economic activities to support…

Promotie

Kijk regelmatig op deze pagina voor meer informatie over het inpassen van duurzaamheid in het onderwijs van de Universiteit Leiden.

Data about COVID-19 were everywhere during the pandemic, but how will all this data continue to be managed and kept open so that it is usable in the future? We spoke with Kathleen Gregory, researcher at the Centre for Science and Technology Studies (CWTS), who will study this question in a new project…

De afdeling Beleid en Innovatie van het Instituut Bestuurskunde richt zich op het vormgeven, implementeren en evalueren van beleid met innovatieve benaderingen. Ons doel is om complexe maatschappelijke uitdagingen aan te pakken door technologische vooruitgang en creatieve beleidsinstrumenten te onde…

Binnen Una Europa vindt academische samenwerking plaats in interdisciplinaire zelfsturende comités (SSC’s).

Scattering of light in the presence of nano-structured materials, i.e. with features in the order of the wavelength of the light or smaller, reveals details of how light interacts with matter at the nanoscale.

The external tissues of plants and animals are colonized by microbial communities termed microbiota. When organisms are exposed to environmental pollutants, these substances will therefore encounter microbiota at the exposure interface.

Promotores: G.W. Canters, T.J. Aartsma

With the energy transition toward a renewable energy supply and a CO2-neutral economy, electrification of the energy system is rising in importance, which leads to the challenge of long-term storage of renewable electricity.

This thesis studied in depth the energy use and CO2 emissions of the industrial sector in China.

Biopolymer sequencing with graphene edge-based tunnel junctions has the potential to overcome current limitations with the third generation of sequencing based on biological nanopores.

Cardiovascular diseases (CVDs) are the leading global cause of mortality. Endothelial dysfunction, an early reversible stage of CVD development, is marked by decreased nitric oxide production linked to Ca2+ influx in endothelial cells.

The goal of the research presented in this thesis was to explore the chemical space of ruthenium(II) photocages, investigate their ability to host potent chemotherapy drugs, and to red shift the activation wavelength of the most promising PACT candidates to conduct biological studies.