1,270 zoekresultaten voor “organic chemistry” in de Publieke website
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Artificial metallo-proteins for photocatalytic water splitting: stability and activity in artificial photosynthesis
Climate change is one of the largest challenges faced by humanity. To combat this research into alternatives to fossil fuels is ongoing. Dihydrogen is considered a good alternative fuel, since its burning only forms water.
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A study on PsbS and its role as a pH sensor
Solar energy harnessed by plants and algae has great potential to be converted into biofuels for future generations.
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Synthetic Methodology Towards ADP-Ribosylation Related Molecular Tools
Phosphorylation affects all four major biomolecules – proteins, lipids, carbohydrates and nucleic acids – and plays a pivotal role in the most fundamental cellular functions.
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Perovskite-based Photoelectrochemical Investigations for Artificial Photosynthesis
Inspired by natural photosynthesis, perovskite-based photoelectrochemical (PEC) systems are being developed for artificial photosynthesis, aiming to enhance solar-to-hydrogen conversion for green energy.
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A semisynthetic peptide-metalloporphyrin responsive matrix for artificial photosynthesis
This thesis is concerned with the constitution of chiral responsive matrix assemblies that may undergo light-driven conformational changes and self-select vibrations to develop vibronic states for driving semi-classical coherent transfer with nearly 100% yield in a lossless NCAP process.
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Core cross-linked polymeric micelles based on polypept(o)ides: from secondary structure formation of polypeptides to functional cross-linking
This thesis aimed to investigate core cross-linked polymeric micelles (CCPMs) and expand their potential for the delivery of hydrophobic drugs and co-factors.
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Multiple star formation: chemistry, physics and coevality
Multiple stars, that is two or more stars composing a gravitationally bound system, are common in the universe.
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Willie PeijnenburgFaculteit der Wiskunde en Natuurwetenschappen
peijnenburg@cml.leidenuniv.nl | 071 5272727
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Bridging the gap between physics and chemistry in early stages of star formation
A dense region of a gaseous and dusty cloud collapses to form a protostar surrounded by a disk and an envelope. This thesis uses both observations and models to study physical and chemical conditions of these protostellar systems which are likely where planets start to form.
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Non-equilibrium chemistry and cooling in simulations of galaxy formation
Promotor: J. Schaye
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'Q-wires': Synthesis, electrochemical properties and their application in electro-enzymology
An objective of this research was to achieve direct, well-defined and non-rate-limiting electron transfer between respiratory enzymes and the electrode surface by means of 'Q-wires'.
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Inverse electron demand Diels-Alder pyridazine elimination: synthetic tools for chemical immunology
The inverse electron demand Diels-Alder (IEDDA) pyridazine elimination emerged in 2013 as a new bioorthogonal reaction and constitutes a prime example of what is now known as dissociative bioorthogonal chemistry. The research described in this Thesis aims to develop synthetic strategies which enable…
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Taking control of charge transfer: strategic design for solar cells
Promotor: Huub J.M. de Groot, Co-promotor: Francesco Buda
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Accelerating the Photocatalytic Water Splitting in Catalyst−Dye Complexes
As a virtually inexhaustible source, solar energy plays a major role in future global energy scenarios.
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Deciphering the complex paramagnetic NMR spectra of small laccase
Multicopper oxidase, laccase, can efficiently reduce oxygen to water and are mostly used in the enzymatic biofuel cells.
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Improvisations in phototrophy
Microbial rhodopsins are photosensitive pigments implemented in the growth and adaptation of a large population of microorganisms.
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Monitoring Alzheimer's disease in transgenic mice with ultra high field magnetic resonance imaging
Promotor: Prof.dr. H.J.M de Groot, Co-Promotor: A. Alia
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The heart of oxygenic photosynthesis illuminated
Promotor: Prof.dr. H.J.M de Groot, Co-Promotor: A. Alia
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Towards photo-CIDNP MAS NMR as a generally applicable enhancement method
Promotores: Prof.dr. H.J.M. de Groot, Prof.dr. J. Matysik (Universitaet Leipzig)
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Resolving the Dynamic Structure of Chlorosomes in Green Sulfur Bacteria by MAS NMR
Understanding how nature captures and transfers solar energy is essential both for elucidating biological photosynthesis and for guiding the design of artificial light-harvesting systems.
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Bioorthogonal Labeling Tools to Study Pathogenic Intracellular Bacteria
In this thesis, bioorthogonal chemistry is combined with correlative light-electron microscopy to selectively label and study pathogenic intracellular bacteria within the host immune cell.
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Analytical chemistry and biochemistry of glycosphingolipids: new developments and insights
Advanced mass spectrometry of glycosphingolipids takes the central stage in this thesis. Investigations focus on characterization of glycosphingolipid metabolism in health and disease with emphasis to the detection and accurate quantitation of known and so far unknown glycosphingolipids and closely…
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Search and rescue: tackling antibiotic resistance with chemistry
With the rise of multi-drug resistant bacterial pathogens, the possibility of a post-antibiotic world is quickly becoming reality.
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Chemistry in embedded disks: setting the stage for planet formation
To address the fundamental questions of how life on Earth emerged and how common life may be in the Universe, it is crucial to know the chemical composition of the planet-forming material.
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Oxidation catalysis on Pt and Au: complexity of simple chemistry
Promotor: J.W.M. Frenken Co-Promotores: I.M.N. Groot; L.B.F. Juurlink
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Synthetic peptides, nucleic acids and molecular probes to study ADP-Ribosylation
This thesis presents the first synthetic peptides ADP-ribosylated on serine, threonine, tyrosine, arginine and cysteine.
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Synthesis of phosphodiester-containing bacterial cell wall components: teichoic acids, capsular polysaccharides and phosphatidyl glycerol analogues
Promotor: G.A. van der Marel, Co-promotor: J.D.C. Codée
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Towards artificial photosynthesis: resolving supramolecular packing of artificial antennae chromophores through a hybrid approach
Promotor: H.J.M. de Groot
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Synthesis of cyclic peptides as bioconjugation platforms
Cyclic peptides are investigated as a platform to induce different orientations between various ligands.
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‘Chemistry in Conflict’ voor minister Bussemaker
Onderwijsminister Jet Bussemaker kreeg op de Dag van de Excellentie op 20 juni een exemplaar van ‘Chemistry in Conflict’, een educatief boek over de rol van chemie in oorlogsvoering. Ludo Juurlink, directeur van het Junior Science Lab, overhandigde het boek.
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Activity-based proteomics of the endocannabinoid system
This thesis describes the use of an activity-based proteomics method to study the endocannabinoid system.
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Graduate School ‘Magnetic Resonance’ ontvangt 8 ton van NWO
Binnen het Graduate Programme van Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO) is de aanvraag voor de 'Netherlands Magnetic Resonance Research School' gehonoreerd. Deze onderzoeksschool is een van de 18 gehonoreerde aanvragen. Vier Leidse Graduate Schools zijn gehonoreerd.
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Interview met Huub de Groot voor Sleutelstad FM Radio
Op woensdagavond 24 mei was Huub de Groot te horen in het programma Science071, het Leidse wetenschapsprogramma van Sleutelstad FM. Hij werd zo'n 15 minuten ondervraagd over het onderwerp van zijn onderzoek naar het omzetten van CO2 naar brandstof.
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Inextricable ties between chemical complexity and dynamics of embedded protostellar regions
Promotor: E. F. van Dishoeck, Co-promotor: C. Walsh
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Chuang WangFaculteit der Wiskunde en Natuurwetenschappen
c.w.chuang.wang@lic.leidenuniv.nl | 071 5274653
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Illuminating N-acylethanolamine biosynthesis with new chemical tools
In this thesis, the discovery and optimization is described of chemical tools to study the N-acylethanolamine (NAE) biosynthetic pathway.
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Click-to-release for immune cell activation
This work describes the use of click-to-release chemistry to get spatiotemporal control over immunocytokine activity. Until now, immunocytokines (cytokines coupled to a tumor-targeting-moiety) remained active throughout the body, being able to bind their respective receptors, causing mild to severe…
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Transition metal compounds with S/N-functionalized NHC ligands: structures, redox properties and electrocatalytic activity
The research described in this thesis focused on the preparation of S/N functionalized carbene ligands and their transition metal complexes, and the exploration of their application as electrocatalysts for proton reduction.
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Chemical tools to study lipid signaling
Synthesis and application of chemical biology tools to study immunomodulatory signaling lipids.
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The advantages and disadvantages of bioorthogonal proteins
This thesis describes the use of bioorthogonal proteins in immunological settings. It provides an introduction towards the field of protein modification, which was used throughout the thesis for the expression of proteins containing unnatural amino acids.
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Inhibitors and probes targeting PslG
Pseudomonas Aeruginosa is a Gram-negative bacterium which can form biofilms, increasing its resistance against antibiotics and the host immune system. Polysaccharides are an integral part of this biofilm, one of these polysaccharides is called Psl. PslG is a glycosidase, able to cleave this polysaccharide,…
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Interview met PhD Remco van Schadewijk in C2W
In het novembernummer van C2W werd Remco geinterviewd en vertelt hij over zijn twee passies, onderzoek en films produceren.
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Shining Light on Interstellar Matter
Promotor: H.V.J. Linnartz
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Luminescence and applications of lanthanoid coordination polymers
Promotor: E. Bouwman, Co-Promotor: S. Bonnet
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Synthetic peptides as tools in chemical immunology
This thesis has described novel synthetic methods to produce a variety of (glyco)peptides and their application in the study of various immunological processes.
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De kracht van de zon: interview Huub de Groot in Leidraad
Voor de oktoberissue van het alumnimagazine Leidraad van de Universiteit Leiden werd Huub de Groot geinterviewd in het kader van het Europese SUNRISE consortium.
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Wim de GripFaculteit der Wiskunde en Natuurwetenschappen
w.j.de.grip@lic.leidenuniv.nl | 071 5272727
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CO2 omzetten in brandstof
Wetenschappers zijn druk bezig zonne-energie vast te leggen in CO2-neutrale ‘solar fuels’. Dat klinkt veelbelovend, maar er is ook kritiek. Zijn die brandstoffen wel echt wel CO2-neutraal en maakt concurrentie door alternatieven ze niet overbodig?
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Vrijheid in onderzoek: feit of fictie?
Artikel in het Alumni magazine 'Leidraad', Winter 2015 met als onderwerp 'feit of fictie' waarin de vrijheid van onderzoekers door de eisen van politiek, maatschappij, universiteit en bedrijfsleven bevraagd wordt. Interview met Huub de Groot.
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Puffen op zonlicht: Waterstof uit een nieuw zonnetankstation
Prof. Huub de Groot vertelde dinsdag 21 april 2015 over de mogelijkheden van duurzame waterstof bij de opening van de waterstofgenerator bedoeld als tankstation voor de busjes van Stadsparkeerplan aan de Leidse Haagweg.