Lau Halgreen

ORCID: 0000-0003-2912-4472
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About
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Research Areas
  • Molecular Sensors and Ion Detection
  • Supramolecular Chemistry and Complexes
  • Lipid Membrane Structure and Behavior
  • Drug Transport and Resistance Mechanisms
  • DNA and Nucleic Acid Chemistry
  • Chemical Synthesis and Analysis
  • Chemical Reaction Mechanisms
  • Neuroscience and Neuropharmacology Research
  • Crystallography and molecular interactions
  • Click Chemistry and Applications
  • Chemical Synthesis and Characterization
  • Radical Photochemical Reactions
  • Lanthanide and Transition Metal Complexes
  • Sulfur-Based Synthesis Techniques

Université Libre de Bruxelles
2021-2025

Synthetic anion receptors are increasingly being explored for the transport of anions across lipid membranes because their potential therapeutic applications. A considerable amount research focuses on chloride, whereas transmembrane inorganic phosphate has not been reported to date, despite biological relevance this anion. Here we present a calix[4]pyrrole with bisurea strap that functions as receptor and transporter H2PO4-, relying formation eight hydrogen bonds efficient encapsulation...

10.1021/jacs.3c04631 article EN Journal of the American Chemical Society 2023-07-20

This article presents the use of dynamic covalent chemistry in liposomal membranes to activate and modulate transmembrane transport chloride by addition different azine-containing compounds.

10.1039/d4sc08580a article EN cc-by Chemical Science 2025-01-01

Dynamic covalent chemistry is used in many applications that require both the stability of bonds and possibility to exchange building blocks. Here we present azines as a dynamic functional group combines best characteristics imines acylhydrazones. We show are stable presence water combinatorial libraries aldehydes equilibrate less than an hour.

10.1039/d2cc03523e article EN cc-by Chemical Communications 2022-01-01

The effect of hydrazones and related functional groups on the anion transport activity thioureas is presented.

10.1039/d1ob01279g article EN Organic & Biomolecular Chemistry 2021-01-01

Macrocyclization has proven to be a useful design strategy in the development of efficient anion receptors. In addition ring size, overall preorganization by structural rigidity is key importance. To explore this context developing an pyrophosphate receptor, three macrocycles featuring 26-membered interior size and similar H-bonding motifs have been synthesized their binding ability investigated. Computational studies NMR data showed different degrees as result differences flexibility. The...

10.26434/chemrxiv-2024-cbrck-v2 preprint EN cc-by 2024-03-18

Macrocyclization has proven to be a useful design strategy in the development of efficient anion receptors. In addition ring size, overall preorganization due structural rigidity is key. To explore this context developing an pyrophosphate receptor, three macrocycles featuring 26-membered interior size and similar H-bonding motifs have been synthesized, their binding ability investigated. Computational studies nuclear magnetic resonance (NMR) data showed different degrees as result...

10.1021/acs.joc.4c00235 article EN The Journal of Organic Chemistry 2024-04-25

Macrocyclization has proven to be a useful design strategy in the development of efficient anion receptors. In addition ring size, overall preorganization by structural rigidity is key importance. To explore this context developing an pyrophosphate receptor, three macrocycles featuring 26-membered interior size and similar H-bonding motifs have been synthesized their binding ability investigated. Computational studies NMR data showed different degrees as result differences flexibility. The...

10.26434/chemrxiv-2024-cbrck preprint EN cc-by 2024-01-25

Stimuli-responsive transmembrane ion transport has become a prominent area of research due to its fundamental importance in cellular processes and potential therapeutic applications. Commonly used stimuli include pH, light, reduction or oxidation agents. This paper presents the use dynamic covalent chemistry based on azine bonds activate modulate chloride liposomes. An active transporter was obtained situ within lipid bilayer by metathesis. The activity further tuned changing structure added...

10.26434/chemrxiv-2024-hb9fx preprint EN 2024-07-15

The synthesis of phosphate receptors represents an important avenue research given the ubiquity in biological and environmental systems. While many molecular scaffolds suitable for smaller anions are available either commercially or via reported synthetic routes, larger such as less common. In this work, we present a clear straightforward basic scaffold 3,6-diaminophenanthrene novel 3,6-bisureidophenanthrene anion receptor prepared from scaffold. Of seven steps using readily starting...

10.3390/m1853 article EN cc-by Molbank 2024-07-19

Synthetic anion transporters can be developed using receptors that are able to bind the and stabilize it in lipophilic interior of a bilayer membrane, they usually contain functional groups with acidic NHs, such as ureas, thioureas squaramides. To assess suitability acylhydrazones new group for preparation transporters, we have studied family functionalized these related groups. 1H NMR titrations DFT calculations indicate bearing acylhydrazone behave chloride two separate binding sites,...

10.26434/chemrxiv-2021-18gpl-v2 preprint EN cc-by-nc-nd 2021-08-19

Synthetic anion receptors are increasingly explored for the transport of anions across lipid membranes because their potential therapeutic applications. A considerable amount research focuses on chloride whereas transmembrane inorganic phosphate has not been reported to date, despite biological relevance this anion. Here we present a calix[4]pyrrole with bisurea strap that functions as receptor and transporter H2PO4–, relying formation 8 hydrogen bonds efficient encapsulation Using...

10.26434/chemrxiv-2023-rlnx4 preprint EN cc-by 2023-06-27

Synthetic anion transporters can be developed using receptors that are able to bind the and stabilize it in lipophilic interior of a bilayer membrane, they usually contain functional groups with acidic NHs, such as ureas, thioureas squaramides. To assess suitability acylhydrazones new group for preparation transporters, we have studied family functionalized these related groups. 1H NMR titrations DFT calculations indicate bearing acylhydrazone behave chloride two separate binding sites,...

10.33774/chemrxiv-2021-18gpl preprint EN cc-by-nc-nd 2021-06-29

Synthetic anion transporters can be developed using receptors that are able to bind the and stabilize it in lipophilic interior of a bilayer membrane, they usually contain functional groups with acidic NHs, such as ureas, thioureas squaramides. To assess suitability acylhydrazones new group for preparation transporters, we have studied family functionalized these related groups. 1H NMR titrations DFT calculations indicate bearing acylhydrazone behave chloride two separate binding sites,...

10.26434/chemrxiv-2021-18gpl preprint EN cc-by-nc-nd 2021-06-29

Synthetic anion transporters can be developed using receptors that are able to bind the and stabilize it in lipophilic interior of a bilayer membrane, they usually contain functional groups with acidic NHs, such as ureas, thioureas squaramides. To assess suitability acylhydrazones new group for preparation transporters, we have studied family functionalized these related groups. 1H NMR titrations DFT calculations indicate bearing acylhydrazone behave chloride two separate binding sites,...

10.33774/chemrxiv-2021-18gpl-v2 preprint EN cc-by-nc-nd 2021-08-19
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