The objective of this collaboration is to share the expertise and knowledge of the involved partners to develop selective and sensitive sensors for molecules with biological and industrial interest. The materials, based on the molecular imprinting technology and in hybrid silica, will be prepared using the sol-gel processes. The Université Paul Sabatier in Toulouse (UPS-TLSE) has a extended experience in the synthesis of functionalized chromophores which can be used as molecular probes. The University of Kiev (UNIKIEV) is internationally known for their works in immobilization of functionalized probes in sol-gel materials and carbon electrodes. The Universidad de Oviedo (UNIOVI) as well as the University of Pierre and Marie Curie as the Ecole Superiore de Phyique et Chemie Indrustielle have all a wide background in characterizing this kind of materials. Finally, the University of Oviedo and the University of Kiev have huge experience in the development of optical sensors.