Laboratory Presentation

Born in 1997, the Laboratory Structure et Réactivité des Systèmes Moléculaires Complexes (UMR CNRS 7565)offers a multidisciplinary approach to the study of complex molecular systems, by combining computational methods in theoretical chemistry, synthesis, physical-chemistry and biology. The main research themes of the lab originate from three fundamental challenges in Science: the environment (Green Chemistry), energy (photovoltaic technology) and health (novel therapeutic substances).



The research of the nano group, involved in this project, concerns one of the most important domain dealing with the preparation of inorganic and/or hybrid materials. Different aspects are investigated : the physic-chemistry of interface and of supramolecular assembly which are the stared point not only for the better understanding of the formation mechanism of the new ordered solids but also for the design of new materials having the peculiar features.  These compounds have attracted much attention due to their important potential applications in various domains (catalysis, optics and electronic, separative science, biology and bioencapsulation).

The developed researches can be divided in 3 parts:
* Mesoporous silica materials: The aim of this part is to investigate the mechanism of formation of mesoporous materials. We establish correlations between the physicochemical features of the surfactant (phase behaviour, surface properties, solubilisation of water/oil, study of the molecular systems) and the structural parameters of the porous materials (pore arrangement, pore diameter, specific surface area, morphology).
Numerous surfactants have been used. Up to 2004 fluorinated surfactant were not investigated for the design of porous materials. At this date we have reported the first example of mesoporous silica synthesized with only fluorinated nonionic surfactant. The main interest of fluorinated surfactant for the preparation of porous materials is their higher thermal stability. As the hydrothermal treatment is performed at higher temperature, the level of silica condensation is enhanced and, thus, the recovered materials exhibit a higher hydrothermal stability.

* Preparation and characterization of mesoporous titania: The aim of this work is to design pure titania mesoporous materials. We have developed a new method which is based on the Liquid crystal Mechanism and the Evaporation induced self assembly, which is usually used to prepare porous film. We succeed in obtaining ordered mesoporous titania with a 370 m²/g specific area and having a pore diameter equal to 10 nm.

* Immobilization of biomolecule into mesoporous materials: In order to prepare bio-captors or bio-reactor we use silica mesoporous materials. The biomolecule immobilization is realized either from a direct one-step immobilization process or by physisorption. We have evidenced that the immobilized enzymes (glucose oxidase and lipase) maintain their activity.


Jean-Luc BLIN
Faculté des Sciences et Technologies
BP 70239

​Tél: +33 3 83 68 43 70