This new structure is based on the willingness of these two laboratories leverage their thematic and institutional complementarities in developing a pool "Physics and Chemistry Life" conducive to the beginning of a more concerted development of interfaces between the sciences material and life Sciences on the campus Orléans. It is quite natural that these two laboratories, which include physicists, chemists and biologists with a total workforce of about 250 permanent staff and non-permanent, proposed the establishment on 1 January 2004, federation following this research center, which was to take a further step in the coordination of their scientific programs, pooling their resources and institutional recognition of this common approach. Following a parallel request to our ministry, a multi-training plan (PPF) on the same area we were given. All Federation CNRS / PPF ensures recognition and visibility to the new structure.