Tracing the evolution of the molecular gas content in galaxies is critical for a complete understanding of galaxy formation and evolution, as it provides the direct fuel for star formation. Studies of high-redshift (z>1) molecular gas reservoirs, most commonly traced by carbon monoxide (CO), have seen…

This thesis introduces the concept of

Waarom Molecular Science & Technology in Leiden? Je wordt niet chemicus óf technoloog, maar beide! De opleidingsvideo vertelt je er alles over.

Deze opleiding integreert genetica, moleculaire biologie en biotechnologie in een aantrekkelijk programma met uitstekende carrièreperspectieven.

Promotor: J.N. Kok, P.E. Slagboom Co-promotor: J.F.J. Laros

Bij de bacheloropleiding Molecular Science & Technology aan de Universiteit Leiden ontwikkelen studenten een sterke theoretische basis in de scheikunde en doen ze kennis van de technologische toepassingen op. Daarnaast leren studenten een bijdrage te leveren aan vraagstukken op het gebied van duurzaamheid,…

The research presented in this thesis makes use of small molecules (as H2 , D2 and O2 ) on well-defined single crystal surfaces (flat Pt(111), flat Cu(211) and curved Pt(111)) to elucidate the role of surface structure and degrees of freedom in the reactant in specific surface reactions.

Molecular complexes can be used as electrocatalysts for oxygen reduction, water oxidation, and/or hydrogen peroxide production.

Stars like the sun are born in large molecular clouds existing from gas and dust. During the formation process, the chemical composition of the material can be altered drastically by the changing physical conditions.

Promotor: Prof.dr. E.F. van Dishoeck, Co-Promotor: G.J. Herczeg

Deze opleiding biedt de mogelijkheid om onderzoek op moleculair, cellulair en organismaal niveau te verenigen, maar biedt ook de mogelijkheid om je te specialiseren op één van deze niveaus.

This thesis provides an overview of the development of the Pair Configuration to Molecular Activity Coefficient (PAC-MAC) model.

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.

Phosphorylation affects all four major biomolecules – proteins, lipids, carbohydrates and nucleic acids – and plays a pivotal role in the most fundamental cellular functions.

Molecular materials have been a subject of interest in fundamental research and applications for decades, and have been studied as bulk crystals, (thin) films and as individual molecules, due to the large variety in their properties. This dissertation explores pentacene crystals near the two-dimensional…

Despite being the second largest transmembrane protein family after GPCRs, the SLC superfamily has only gained significant attention in early drug development over the past decade.

Promotor: Prof.dr. H.V.J. Linnartz, Co-Promotores: S. Ioppolo, H.M. Cuppen

The electrochemical hydrogenation reaction is an alternative approach for the transformation of unsaturated bonds without the use of flammable dihydrogen gas.

Promotor: Prof.dr. G.J. Kroes

Atoms and molecules are the basic units of matter. If we keep dividing a bar of gold or a glass of water into smaller parts, at the end we are left with a single gold atom or a water molecule.

This research delves into a region of space known as the interstellar medium (ISM), which is essentially the area between the stars filled with gas and dust.

Promotor: G.F.A. Kersten, W. Jiskoot, Co-promotor: B. Metz

The research described in this thesis has, using the zebrafish as a model system, shed new light on the intricate relationship between TB and DM2, in particular on the role of leptin, SHP-1 and glucocorticoids.

Before the large scale use of renewable energy sources can be implemented in our society, the storage of electrical energy needs to be tackled. Storage the energy as hydrogen via the reduction of protons is a good option.

We have examined sequences from the ligand-binding domain of the nicotinic acetyl choline receptor (nAChR) in 148 vertebrate species. We are in interested in this receptor because the α-neurotoxins of many venomous snakes binds to this receptor in its location at the neuromuscular junction in all ve…

Metal complexes and 2D materials like graphene were combined to produce structures that can function as sensors.

Het College van Bestuur heeft prof.dr. Harold Linnartz per 1 juni 2011 benoemd tot hoogleraar Laboratorium Astrofysica. Linnartz werkt sinds 2005 als universitair hoofddocent bij de Sterrewacht Leiden.

Promotores: Prof.dr. F.P. Israel, Prof.dr. P.P. van der Werf

Promotor: J. A. Bouwstra

The thesis explores how interstellar chemistry evolves as a function of time and changing physical architectures during the formation of stars.

De Leidse Sterrewacht heeft een nieuwe hoogleraar aangesteld. Serena Viti zal één van de stoelen Moleculaire Astrofysica bekleden. Met haar nieuwe onderzoeksgroep wil ze verschillende onderzoekstechnieken combineren om de geheimen van zowel nabije als verre sterrenstelsels te ontrafelen. ‘Mijn belangrijkste…

An Active Galactic Nucleus (AGN) is a highly luminous region at the center of a galaxy, powered by the accretion into a supermassive black hole and emitting energy from radio waves to gamma rays, often outshining the host galaxy.

The explosive radiation and diversification of the advanced snakes (superfamily Colubroidea) was associated with changes in all aspects of the shared venom system. Morphological changes included the partitioning of the mixed ancestral glands into two discrete glands devoted for production of venom ormucous…

Promotor: Prof.dr. J. den Hertog

The electrochemical oxygen reduction reaction (ORR) is an essential half-reaction for the utilization of hydrogen as a sustainable fuel, via the conversion of hydrogen to electrons and protons facilitated by the ORR. In the most common fuel cells, the ORR is requires high loadings of non-abundant platinum…

Supervisor: P.J.J. Hooykaas Co-Supervisor: R. Offringa

Op vrijdag 29 januari vertelde Simon Portegies Zwart tijdens zijn oratie over de relevantie van de computationale astrofysica en de rol die computers mogelijk kunnen spelen in het verbeteren van ons begrip van het universum.

Stars and planets form within cold, dense clouds of gas and dust drifting through interstellar space. Although dust makes up only a small fraction of this material, it plays a key role in shaping the chemical evolution of these environments.

The clinical potential of applying synthetic lethality to cancer treatment is famously demonstrated by the BRCA1/PARP1 paradigm: a tumor specific defect in BRCA1 – a component of the DNA double-strand break (DSB) repair pathway homologous recombination (HR) – results in a remarkable sensitivity to PARP1…

Large areas of space are filled by molecular clouds that consist of gas and dust grains that are the remnants of dead stars. When these clouds start collapsing, the decreasing temperature and increasing density cause gas particles to start accreting onto dust grain surfaces.

Promotor: J.M. van Ruitenbeek, Co-Promotor: S.J. van der Molen

Viral diseases constitute one of the major challenges in modern medicine. Membrane-targeting have broad-spectrum potential and could distinguish viral membranes from the host cell plasma membrane by the difference in membrane curvature.

This thesis presents the first synthetic peptides ADP-ribosylated on serine, threonine, tyrosine, arginine and cysteine.

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…

Nicotinamide adenine dinucleotide (NAD+) is the substrate used for the introduction of the ubiquitous and highly dynamic PTM in which either one or multiple adenosine diphosphate ribose (ADPr) moieties are covalently attached to a nucleophilic side chain of an specific amino acid in the target protein…

In this dissertation iron-based homogeneous catalysts were synthesized, characterized and investigated for water oxidation activity.

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.

Promotor: G.P. van Wezel, Co-promotor: D. Claessen

I will give a general introduction to the field of molecular electronics, its history, methods and challenges. I will also introduce the subject of my investigation and provide a brief outlook to the remainder of our thesis.