كلية العلوم الدقيقة والتطبيقية
الوصف
The ever-increasing discovery of new materials and modern synthesis methods make physicochemical analysis techniques and theoretical chemistry essential and reliable tools for studying these materials in various phases. To successfully carry out this work, it is crucial to create a multidisciplinary environment that brings together expertise from different specialties (synthetic chemists, theoretical chemists, physical chemists, statisticians, and computer scientists). The experience acquired by the laboratory members and the numerous fruitful results obtained, summarized in the appendix through the publications and presentations shown, demonstrate a clear potential for studying the stability and properties of giant molecular systems of pharmacological, biological, or technological interest. Our experience has allowed us to develop considerable expertise in selecting research strategies and also in postgraduate training. Examples include ring-opening mechanisms, structural changes and proton transfer mechanisms in cholesterol and cholesterol acetate molecules, as well as the electronic and molecular structure properties of certain systems such as nanomolecules and their thermodynamic, structural, and transport properties in condensed phases, the photosensitivity properties of certain polymers, chalrates, trap molecules, etc. The research areas are numerous and have allowed us to realize their current importance in medicine (the cholesterol molecule and its derivatives), technology (crystals, photosensitive molecules, surfactants, and micellar systems), and fundamental science (structure and interaction of supramolecular systems). These investigations open up new and relevant topics for student training, as evidenced by the literature. The power of physicochemical analysis methods and increasingly sophisticated computing tools allows us to complete a considerable amount of investigation into these materials in a reasonable timeframe. To enhance the group's research and broaden its scope of study based on the needs and interests of the academic and industrial research groups with which we collaborate, we have chosen to propose a general theme aligned with our postgraduate training program and the research interests of our partner laboratories. The research focus and strategies will then flow directly from this theme. The research is centered on mastering the properties and functions of macromolecules through their physicochemical manipulation at the nanometer scale. We aim to achieve the ultimate goals of controlling the properties and manufacturing of materials with scientifically modified functions through three approaches: synthesis, characterization, and theoretical modeling. Emphasis is placed on establishing relationships between the structure and function of new materials, both in their bulk and at their interfaces. Synthesis relies heavily on the concept of assembly, whether through the manipulation of atoms or molecules in the gas phase, condensed at the surface of crystals, the deposition of clusters in assemblies with an ordered topology, or the self-assembly of larger, pre-organized motifs. These are characterized at the global scale (calorimetry, conductivity) and at the molecular scale, using scanning probes (scanning tunneling microscopy [STM], atomic force microscopy [AFM], near-field scanning optical microscopy [NSOM]), spectroscopy (nuclear magnetic resonance [NMR], Fourier transform infrared [FTIR], electron paramagnetic resonance [ESR], Raman spectroscopy), and diffraction techniques (X-rays, neutrons). Advanced modeling and electronic calculations, performed by members of the "Theory" program, play a vital role in understanding the factors that determine the properties and functions of materials.
The topics studied include:
Theoretical study of the electronic and structural properties of polyaromatic hydrocarbons; Theoretical study of oxirane reactions in the presence of a base; Determination of the particle size of asphaltene from Hassi-Messaoud oil; Influence of flocculant, additives, and temperature using UV-Visible spectroscopy; Physicochemical study of mixed systems of heavy compounds from Algerian oil (asphaltene-resin);
- Development and physicochemical study of energy-conducting nanocomposites;
- Development and structural characterization of composite materials through chemical modification of natural polymers; Study of their physicochemical properties.
- Synthesis and characterization of bio-based nanocomposites. Study of their potential applications.
- Study of asphaltene aggregation in crude oil in the presence of nanoparticles.
- Synthesis and structural characterization of nanocomposites obtained from bio-based polymers.
- Modeling of the adsorption of asphaltenes from Algerian oil by nanoparticles.
- Synthesis and characterization of metal-reinforced nanocomposites: Study of their potential applications.
- Physicochemical study of the interaction between host and guest molecules: encapsulation of substances at the molecular scale.
- Synthesis and characterization of new three-dimensional networks and study of their potential applications.
- Elimination of complex chemical molecules: application to asphaltenes and organic pollutants.
- Study of the electronic properties of photosensitive materials: application to photovoltaics.
- Synthesis and characterization of three-dimensional network polymer materials
- Chemical modifications of bio-based polymers: modification is achieved through grafting or chain substitution/extension reactions on the natural polymer. This technique allows us to improve the physicochemical properties of natural polymers, such as water resistance, foaming, increased ductility, and thermal and mechanical endurance, thereby expanding their range of applications.
- Synthesis and application of amphiphilic polymers and hydrogels.
The topics studied include:
Theoretical study of the electronic and structural properties of polyaromatic hydrocarbons; Theoretical study of oxirane reactions in the presence of a base; Determination of the particle size of asphaltene from Hassi-Messaoud oil; Influence of flocculant, additives, and temperature using UV-Visible spectroscopy; Physicochemical study of mixed systems of heavy compounds from Algerian oil (asphaltene-resin);
- Development and physicochemical study of energy-conducting nanocomposites;
- Development and structural characterization of composite materials through chemical modification of natural polymers; Study of their physicochemical properties.
- Synthesis and characterization of bio-based nanocomposites. Study of their potential applications.
- Study of asphaltene aggregation in crude oil in the presence of nanoparticles.
- Synthesis and structural characterization of nanocomposites obtained from bio-based polymers.
- Modeling of the adsorption of asphaltenes from Algerian oil by nanoparticles.
- Synthesis and characterization of metal-reinforced nanocomposites: Study of their potential applications.
- Physicochemical study of the interaction between host and guest molecules: encapsulation of substances at the molecular scale.
- Synthesis and characterization of new three-dimensional networks and study of their potential applications.
- Elimination of complex chemical molecules: application to asphaltenes and organic pollutants.
- Study of the electronic properties of photosensitive materials: application to photovoltaics.
- Synthesis and characterization of three-dimensional network polymer materials
- Chemical modifications of bio-based polymers: modification is achieved through grafting or chain substitution/extension reactions on the natural polymer. This technique allows us to improve the physicochemical properties of natural polymers, such as water resistance, foaming, increased ductility, and thermal and mechanical endurance, thereby expanding their range of applications.
- Synthesis and application of amphiphilic polymers and hydrogels.