Abstract: A complex including: a support provided with at least two faces one of which is provided with a coating of an adhesive, at least one ligand, said ligand being immobilized on the adhesive surface. The ligand implemented within the framework of the present invention is chosen from among proteins, peptides, antibodies, nucleic acids, sugars or oligosaccharides, toxins, pesticides, hormones, herbicides, fungicides, neurotransmitters.

Abstract: The invention relates to a composition for the detection of traces of human or animal blood. The aforementioned composition comprises a luminol compound, an oxidizing agent and a base which are diluted in a preferably aqueous solvent. Said composition is characterized in that: the luminol compound is present in a quantity providing a concentration of between 1 and 20 mmoles/l in the end composition, the oxidizing agent is hydrogen peroxide which is present at a concentration of between 25 and 100 mmoles/l in the end composition, the base is soda, NaOH, which is present at a concentration of between 25 mmoles/l and 500 mmoles/l in the end composition. The invention also relates a kit and a method for preparing said composition. Furthermore, the invention relates to a method of detecting and locating traces of human or animal blood.

Abstract: Hybrid probe particles comprising a nanoparticle of gold of diameter in the range extending from 2 to 30 nm on the surface of which, on the one hand, at least one, and preferably from one to 100, organic probe molecules are grafted by gold-sulphur bonds and on the other hand, at least 10, and preferably 10 to 10000, molecules with luminescent activity, as well as their preparation process.

Abstract: The invention relates to a composition for the detection of traces of human or animal blood. The aforementioned composition comprises a luminol compound, an oxidising agent and a base which are diluted in a preferably aqueous solvent. Said composition is characterized in that: the luminol compound is present in a quantity providing a concentration of between 1 and 20 mmoles/l in the end composition, the oxidizing agent is hydrogen peroxide which is present at a concentration of between 25 and 100 mmoles/l in the end composition, the base is soda, NaOH, which is present at a concentration of between 25 mmoles/l and 500 mmoles/l in the end composition. The invention also relates a kit and a method for preparing said composition. Furthermore, the invention relates to a method of detecting and locating traces of human or animal blood.

Abstract: The present invention concerns a method for detecting a molecular recognition by electrochemiluminescence. Said method comprises the steps consisting in a) depositing an electronically conductive film on a support and attaching on said film a sensor molecule in order to obtain a test support; b) subjecting the sample to be tested to a protocol of marking the target molecule with an electrochemiluminescent marker; c) bringing the marked target into contact with the test support; d) rinsing the test support; and e) subjecting the test support rinsed in step d) to a reading of the electrochemiluminescence signal triggered by a direct, or indirect, electronic transfer between the target and the support via the electronically conductive film.

Abstract: The field of the present invention is that of identification and analysis of chemical and/or biological species of the enzyme/substrate, enzyme/inhibitor or antigen/antibody etc. type. The problem on which the invention is based is to provide a system for qualitative and/or quantitative analysis of biological substances by amplified chemiluminescence which allows an actual significant improvement in the emission of light resulting from passage of a chemiluminescent reagent to the excited state. This problem has been solved by means of a system according to the invention, which involves a ligand a) which can be coupled with the substances to be analysed, a chemiluminescent reagent b) of the luminol type, an enzyme c), a substrate d) which oxidizes the enzyme c), and at least one amplifier e), this system being characterized in that the amplifier e) is chosen from the family of halogenophenol (iodophenol) esters.