A structure comprising macromolecules self-organized around carbon nanotubes, wherein said structure is essentially formed from rings of polymerized lipid compounds surrounding the carbon nanotubes, the polymerized lipid compounds comprising one chain, A, or two A chains, said one chain A or two A chains being linked to a group Z, said polymerized lipid compounds having the structure A-Z-A or A-Z,
- wherein:
- A represents a CH3—(CH2)m—C≡C—C≡C—(CH2)n— chain, wherein n and m, which are the same or different, are integers from 1 to 16;
- and
- Z represents a polar head formed by a —COOH, —CO—NH—Y, —NH2 or N+(R)3 group, R being a C1 to C4 alkyl and Y being a —(CH2)4—C(R1)—N(CH2—COOH)2 radical,
- provided that if said polymerized lipid compounds contain one chain, A, then R1 represents H or a COOH radical, and A further represents a group of the following structure:
- where R2 represents a —COOH or —CO—NH—Y1 group, Y1 being a —(CH2)4—C(R3)—N(CH2—COOH)2 radical and where R3 represents H or a COOH radical;
- or Z or R2 may also be hydrophilic or neutral polar heads.