Patterned, dendrimeric substrate surfaces and production and use thereof

A patterned substrate comprising first regions and second regions on a surface of the substrate, wherein

• the first regions have first dendrimer structures and the second regions have second dendrimer structures;
• the dendrimer structures are each covalently connected with the substrate surface;
• the second regions enclose the first regions;
• and
• the second dendrimer structures have at least one structural element different from the structural elements of the first dendrimer structures;
• wherein the first dendrimer structures have terminal groups having the following general formula (4) or (5)
• wherein X and Z are independently from each other NR3 or O, wherein each R3 is independently from each other selected from the group consisting of hydrogen, an alkyl group, a cycloalkyl group, an aryl group, and a heteroaryl group;
• wherein R4 is selected from the group consisting of -NG1G2, —NO2, —CN, -OG3, —C(O)G4, C(O)NG5G6, -COOG7 and —SO3G8, wherein G1 to G8 are independently from each other selected from the group consisting of hydrogen, an alkyl group, a cycloalkyl group, an aryl group, and a heteroaryl group;
• and
• o is an integer from 1 to 6.