学术活动发布与订制系统

New “bottom-up” fabrication techniques are now effectively explored for the production of nanostructured functional materials, and specifically for materials with specific optical properties (nanophotonic devices and metamaterials). Nanochemistry and self-assembly appear as interesting nanofabrication tools. Indeed, spatial control can be obtained by template-assisted self-assembly, using matrices presenting a spontaneous molecular organization. Among the promising self-assembled systems are the diblock copolymers made of two molecular chains of distinct chemical nature linked together, which present solid state spontaneous structures with long-range order and tunable characteristic sizes between 10 and 50 nm. In particular, alternating lamellar and hexagonally-ordered cylindrical structures are described in many systems. These are, however, organic materials exhibiting moderate susceptibilities and low optical constant contrast. Therefore, in their native state, they should be considered essentially as ‘neutral’ templates, used to spatially organize ‘active’ entities. Recent developments in the wet chemistry synthesis of nanoparticles have allowed for significant improvements in terms of control of chemical composition, surface chemistry, properties and size. In this presentation, we will discuss the use of self-assembly of soft nanocomposites for the fabrication of hybrid materials consisting of plasmonic nanoparticles incorporated within organized polymer matrices. Measurements and analysis of optical properties will also be presented.