Patent ID: 6969528

Claim:
A polycationic phosphorus-containing dendrimer, which consists: of a central layer in the form of a central core P 0 comprising 2 to 8 functionalized groups, of n intermediate layers, which may be identical or different, each one of said intermediate layers consisting of units P 1 corresponding to formula II: in which; L is an oxygen, phosphorus or sulfur atom, M represents one of the following groups: an aromatic group di-, tri- or tetra-substituted with alkyl, alkoxy or unsaturated C 1 â€“C 12 olefinic, azoic or acetylenic groups, unsubstituted or substituted with at least one phosphorous, oxygen, nitrogen, sulfur or halogen atom, or an alkyl or alkoxy group comprising several substituents as defined when M is an aromatic group, R 1 and R 2 , which may be identical or different, represent a hydrogen atom or one of the following groups: alkyl, alkoxy, or aryl, unsubstituted or substituted with at least one phosphorous, oxygen, nitrogen, sulfur or halogen atom, n is an integer between 1 and 11, E is selected from the group consisting of an oxygen atom, a sulfur atom, a nitrogen atom and a nitrogen atom linked to an alkyl, alkoxy or aryl group, an outer layer consisting of units P2, which may be identical or different, corresponding to formula III: in which: R 5 represents a hydrogen atom or one of the following groups: alkyl, alkoxy, or aryl, unsubstituted or substituted with at least one phosphorus, oxygen, nitrogen, sulfur or halogen atom, W represents one of the following groups: alkyl, alkoxy, or aryl, unsubstituted or substituted with at least one phosphorus, oxygen, nitrogen, sulfur or halogen atom, R 3 and R 4 , which may be identical or different, represent a C 1 â€“C 5 alkyl group, X represents a hydrogen atom or a C 1 â€“C 5 alkyl group or is absent, and Z represents a halide ion, an alkylCOO âˆ’ group or any other anionic group comprising carbon, oxygen, sulfur, nitrogen, phosphorus or halogen atoms, or is absent.