A5059901448- Advanced Polymer Synthesis and Characterization
- Nanoparticle-Based Drug Delivery
- Polymer Surface Interaction Studies
- X-ray Diffraction in Crystallography
- Pickering emulsions and particle stabilization
- Click Chemistry and Applications
- Crystallization and Solubility Studies
- Synthesis and biological activity
- Diatoms and Algae Research
- Synthesis and Characterization of Heterocyclic Compounds
- Chemistry and Chemical Engineering
- Lymphoma Diagnosis and Treatment
- Microfluidic and Bio-sensing Technologies
- Synthesis and Biological Evaluation
- Photochromic and Fluorescence Chemistry
- Parvovirus B19 Infection Studies
- Offshore Engineering and Technologies
- Surfactants and Colloidal Systems
- Crystal structures of chemical compounds
- Algal biology and biofuel production
- Multicomponent Synthesis of Heterocycles
- Conducting polymers and applications
- Viral-associated cancers and disorders
- Mesoporous Materials and Catalysis
- Synthesis of Tetrazole Derivatives
Fundación Valle del Lili
2023
Karlsruhe Institute of Technology
2017-2021
Universidad de La Frontera
2021
Max Planck Institute for Polymer Research
2015-2018
University of Applied Sciences Mainz
2016
Universidad de Los Andes
2010-2016
We introduce an inherently fluorescent self-reporting step-growth polymer system as well a fluorescence-based methodology for accessing the kinetics of underpinning photoinduced nitrile imine-mediated tetrazole-ene cycloaddition (NITEC) process, using equimolar mixture bismaleimide linker and bifunctional α,ω-tetrazole-chain transfer agent (CTA). Similarly, α,ω-tetrazole-capped polystyrene, prepared via RAFT polymerization, was employed photoreactive macromonomer. Upon UV irradiation,...
A microwave-assisted approach for the regioselective synthesis of functionalized 6-(aryldiazenyl)pyrazolo[1,5-a]pyrimidin-7-amines from cyclization 3-oxo-2-(2-arylhydrazinylidene)butanenitriles with 5-amino-1H-pyrazoles under solvent-free conditions has been developed. This methodology was distinguished by its broad substrate scope, operational simplicity, high atom economy, and high-yielding without requiring chromatographic purification. In addition, an efficient versatile...
We introduce a fluorescence-based methodology enabling the quantification of ligation points in photochemically prepared polymer networks. Well-defined α,ω-tetrazole-capped strands via RAFT polymerization are crosslinked under UV irradiation by trimaleimide nitrile imine mediated tetrazole-ene cycloaddition. Thus, for each linkage point fluorescent pyrazoline ring is formed, resulting networks, which degradable aminolysis trithiocarbonate functionalities, leading to soluble fragments. The...
The strength of combining experimental design and advanced kinetic Monte Carlo (kMC) modeling to understand step-growth network synthesis, commencing with a linear/star polymeric precursor, is illustrated considering three chemistries: (i) para-fluoro-thiol reaction (PFTR); (ii) nitrile imine-mediated tetrazole-ene cycloaddition (NITEC); (iii) star poly(ethylene oxide-stat-propylene oxide) (sPEG)-amine-epoxy click reaction. Chemical parameters are determined based on small-molecule systems...
Multiple functionalization of magnetic silica particles allows simultaneously their bio-orthogonal modification and less unspecific protein adsorption to occur.
Abstract Permanent magnet motors (PMMs) have been used in electrical submersible pump (ESP) applications worldwide, but the oil and gas industry still has questions about value of technology terms power savings; return on investment (ROI); evaluation consumption, operational considerations, reliability. Is this future for ESPs? This paper will provide a real analysis based more than 200 PMM installations Quifa Rubiales Fields Colombia, South America. The fields study are located remote...
Abstract Wir führen eine Fluoreszenz‐basierte Methode ein, die es ermöglicht, Anzahl der Ligationspunkte in einem photochemisch hergestellten Polymernetzwerk zu bestimmen, und sprechen hiermit schwierige Frage an, wie man an Verbindungspunkten Netzwerk quantifiziert. Wohldefinierte α,ω‐Tetrazol‐gekappte Polymerstränge wurden mittels RAFT‐Polymerisation hergestellt mit Trimaleimid einer durch UV‐Bestrahlung initiierten Nitril‐Imin‐vermittelten Tetrazol‐En‐Cycloaddition vernetzt. Dadurch wird...
The self-organization of colloids into defined structures offers the possibility to develop novel materials with exciting properties. However, this requires understanding and application forces governing interparticle association. A approach for a size-dependent anisotropic assembly between nanoparticles is achieved. Janus-like iron oxide/polystyrene hybrid nanocolloids are prepared by heterophase polymerization selectively coated silica on oxide face gradually form cavity. Hence, shallow...
The title compound, C(19)H(16)N(6), crystallizes with Z' = 2 in the space group P2(1)/n. two molecules selected asymmetric unit are approximate mirror images of one another; most corresponding pairs atoms related by an half-cell translation along [100]. Each molecule contains intramolecular N-H...N hydrogen bond and linked into complex sheets a combination intermolecular four C-H...pi(arene) bonds. Comparisons made some other 7-aminopyrazolo[1,5-a]pyrimidines.
Front Cover: The size-dependent pairing between an-isotropic multimaterial nanoparticles is demonstrated. association provided by the spontaneous assembly of Janus upon addition a silica precursor. A face-selective coating on surface particles induces morphology change, which then mediates irreversible particles. Further details can be found in article D. Estupiñán, M. B. Bannwarth,* K. Landfester, and Crespy* page 2070.
El sarcoma de Kaposi es una neoplasia angioproliferativa asociada al virus del herpes humano 8. Según las características clínicas y el grado inmunosupresión, son cuatro formas epidemiológicas: clásica, endémica, iatrogénica epidémica, esta última síndrome inmunodeficiencia adquirida (SIDA) con un 40% compromiso gastrointestinal. Existe escasa evidencia epidemiológica, clínica endoscópica la enfermedad. Este estudio buscó caracterizar condición en población colombiana contrastar los...