Abstract: A method for preparing a radioactive tracer provided with a radioactive fluorine isotope, including providing a precursor of the radioactive tracer, comprising at least one leaving group completely or partially formed by a labelling entity, wherein said leaving group can be moved by a fluoride ion, providing a molecularly imprinted polymer dedicated to the molecular recognition of at least the aforementioned labelling entity, exposing the precursor to a radioactive fluoride ion source under conditions suitable for movement of the leaving group by a radioactive fluoride ion, placing the mixture resulting from step (iii) in contact with the molecularly imprinted polymer under conditions suitable for the recognition of the labelling entity, and obtaining a solution containing the radioactive tracer provided with a radioactive isotope of fluorine obtained at the end of step (iii).

Abstract: A kit for separating and/or characterizing at least one molecule A of interest, the kit including: (i) a compound having the general formula: B—(R)n—Z in which: B represents a hydrogen atom or a detectable labeling entity; R represents a C1-C10000 hydrocarbon unit which may be polymeric or non-polymeric and optionally incorporates one or more heteroatoms, chosen from N, O, S, Br, Cl, F, P, B, Si and/or one or more metals; n represents 0 or 1, with n being equal to 1 when B represents a hydrogen atom; and Z represents a functional group capable of reacting in a click chemistry reaction in order to form a linking function Lclick; and (ii) a molecularly imprinted polymer dedicated to the molecular recognition of at least said linking function Lclick.

Abstract: The invention concerns a method for preparing a molecular fingerprint comprising sites for identifying at least one target molecule, the fingerprint being obtained from at least one master molecule of polymeric type, called master polymer. The invention is characterized in that the master polymer is different from the target molecule(s), and is capable of being eliminated by degradation and/or washing, and that at least 5% in number of monomer units constituting the master polymer are involved in the formation of the sites for identifying the target molecule(s).

Abstract: The present invention relates to a kit for analysing at least one target molecule comprising at least a first molecularly imprinted polymer and a second molecularly imprinted polymer which are chemically identical or different, capable of interacting with the target molecule(s), and at least one marker, wherein said marker is either a competitive marker or marker capable of (i) of interacting with all or part of the recognition sites for the target molecule(s) of the second molecularly imprinted polymer and (ii) of being displaced from said recognition site(s) by the target molecule(s) when said molecularly imprinted polymer is placed in the presence of said target molecule(s), or an intrinsic marker or a constitutive unit of the second molecularly imprinted polymer, capable (i?) of interacting with all or part of the target molecule(s) when the latter interact(s) with all or part of its recognition sites for said target molecule(s) and (ii?) of consequently emitting a detectable signal.

Abstract: The invention concerns a method for preparing a molecular fingerprint comprising sites for identifying at least one target molecule, said fingerprint being obtained from at least one master molecule of polymeric type, called master polymer. The invention is characterized in that said master polymer is different from the target molecule(s), and is capable of being eliminated by degradation and/or washing, and that at least 5% in number of monomer units constituting the master polymer are involved in the formation of the sites for identifying the target molecule(s).

Abstract: The present invention relates to crosslinked polymeric nanospheres having a star-shaped structure of the core-branch type, in which the branches are of a hydrophilic nature and the core is of a polymeric, crosslinked, hydrophobic nature and forms the imprint of all or at least part of a target molecule and to a process for preparing them.